JP5081094B2 - Walking rice transplanter - Google Patents

Description

  The present invention includes a seedling platform that is provided so as to be movable in the lateral direction of the vehicle body in an inclined posture that is positioned on the vehicle body rear side toward the vehicle body front side of the steering handle, and a plurality of seedling planting mechanisms arranged in the vehicle body lateral direction, A seedling lateral feed mechanism provided on the vehicle body front side of the seedling platform so as to reciprocate in the lateral direction of the vehicle body in conjunction with the seedling planting movement of the seedling planting mechanism by a seedling lateral feed shaft that can rotate and drive the seedling platform; , A walking type rice transplanter provided with a seedling vertical feed mechanism provided on the back side of the seedling platform so as to vertically feed the seedlings of the seedling platform to the seedling planting mechanism by a vertically movable seedling feeder .

Conventionally, as the above-described walking type rice transplanter, there has been one described in Patent Document 1, for example.
In the walking type rice transplanter described in Patent Document 1, a lateral feed screw 24 is axially mounted in a laterally penetrating state in a lateral direction through a slider receiver 25 in a lateral feed case 23, and the lateral side of the lateral feed screw 24. The end and the lower left and right side walls of the seedling stage 10 are connected via a pair of left and right connecting bodies 31, 31, and a slider 26 meshed with the lateral feed screw 24 is attached to the slider receiver 25, and the slider receiver 25 is rotated. By driving, the lateral feed mechanism 22 is configured so as to slide the lateral feed screw 24 back and forth to laterally feed the seedling mounting table 10 in the left-right width direction.
A seedling vertical feed drive mechanism 39 is interposed between the horizontal feed case 23 and a seedling vertical feed mechanism 38 attached to the lower rear wall of the seedling mount 10.
The seedling vertical feed drive mechanism 39 includes an intermittent rotation shaft 40 pivoted in the lateral feed case 23, a front / rear swing arm 41 having a base end connected to the intermittent rotation shaft 40, and a front end of the front / rear swing arm 41. A push-pull rod 42 having a front end connected thereto, a front / rear swing piece 43 having a front end connected to a rear end of the push-pull rod 42, and a vertical swing piece 45 having the same front / rear swing piece 43 and a support shaft 44. ing. The tip of the vertically swinging piece 45 is brought into contact with the tip of the vertical feed cam 38a of the seedling vertical feed mechanism 38, and the vertical feed cam 38a is intermittently rocked, so that the seedling is placed on the seedling mount 10. The mat is fed vertically by a certain amount vertically and vertically. (Each symbol is described in the publication.)

JP-A-6-46625 (paragraphs [0020], [0025], [0026], FIGS. 2, 6, and 7)

In this type of walking type rice transplanter, if the seedling vertical feed power is taken out from the seedling horizontal feed mechanism and this seedling vertical feed power is transmitted to the seedling vertical feed mechanism to drive the seedling vertical feed mechanism, As it reaches the end of the left and right lateral transfer stroke, it is easy to perform vertical seedling feed at an appropriate timing such that the seedling on the seedling stage is vertically fed toward the seedling planting mechanism.
When the above-mentioned conventional technology is applied and the seedling horizontal feed mechanism and the seedling vertical feed mechanism are interlocked, the interlock that links the output body of the power take-off section provided in the seedling horizontal feed mechanism and the input body of the seedling vertical feed mechanism The pods reach from the front of the seedling platform to the back side of the seedling platform through the lower part of the seedling platform, and the interlocking cocoon and the member connected to the interlocking cocoon are located at a low arrangement level, and the seedling planting mechanism It was easy for the mud that was sprinkled up by such things to adhere to interlocking dredging.

  If the interlocking pod is disposed so as to extend from the front of the seedling platform to the back side of the seedling platform through the lateral side of the seedling platform, the arrangement level of the interlocking cage can be increased. In this case, when the seedling vertical feed mechanism is driven when the seedling vertical feed mechanism is driven, the interlocking rod is interlocked at its end with respect to the support shaft of the seedling vertical feed body in the seedling vertical feed mechanism. Bends and torsional strains, and drive failure is likely to occur where the amount and timing of operation differ between the seedling vertical feed body close to the interlocking rod and the seedling vertical feeding body far from the interlocking rod.

  An object of the present invention is to provide a walking type rice transplanter capable of transmitting power from a seedling lateral feed mechanism to a seedling vertical feed mechanism and performing vertical seedling feed while preventing the above-described mud adhesion and driving failure. .

The first aspect of the present invention is a seedling stand that is provided in a tilted attitude that is located on the vehicle body front side of the steering handle toward the rear side of the vehicle body and that is movable in the lateral direction of the vehicle body, and a plurality of seedling planting mechanisms arranged in the lateral direction of the vehicle body And a seedling lateral feed provided on the vehicle body front side of the seedling platform so as to reciprocate in the lateral direction of the vehicle body in conjunction with a seedling planting movement of the seedling planting mechanism by a seedling lateral feed shaft that can be driven to rotate. Walking-type rice planting provided with a mechanism and a seedling vertical feeding mechanism provided on the back side of the seedling mounting base so as to vertically feed the seedlings of the seedling mounting base toward the seedling planting mechanism by a vertically movable seedling feeder In the machine
A power take-out unit for taking out the driving force of the seedling horizontal feed shaft as a seedling vertical feed power as the seedling platform reaches the left and right lateral transfer stroke ends is provided in the seedling horizontal feed mechanism, Provide an interlocking rod for vehicle front-rear direction connected to the output body and the input body of the seedling vertical feed mechanism,
In the partition wall portion positioned between a pair of adjacent seedling placement portions of the seedling placement stand, a through hole through which the interlocking hook is inserted is provided .
The interlocking ridge penetrates the partition wall in a posture perpendicular to the seedling placement surface of the seedling platform in a side view of the vehicle body;
The interlocking rod is located at a lower arrangement height than a straight line passing through the rotation axis of the seedling horizontal feed shaft and the rotation axis of the seedling vertical feed body,
A connecting frame having a horizontal connecting frame portion extending from the left and right end portions of the seedling stand toward the front of the vehicle body and a front connecting frame portion erected on the extending end portions of the pair of left and right horizontal connecting frame portions. Prepared,
In the front connection frame portion, a passive portion to which a seedling platform transfer body of the seedling lateral feed mechanism is connected is provided,
Wherein said output of power take-off is that is swingably supported on the front coupling frame.

  According to the configuration of the first aspect of the present invention, the seedling vertical feed power is taken out from the seedling horizontal feed shaft by the power take-off unit as the seedling platform is laterally transferred by the seedling horizontal feed mechanism and reaches the left and right transfer stroke ends, This seedling vertical feed power is output from the output body. The seedling vertical feed mechanism can be driven by transmitting the seedling vertical feed power from the output body to the input body of the seedling vertical feed mechanism by an interlocking rod. Since the interlocking rod is inserted through the through hole provided in the partition wall portion located between a pair of adjacent seedling placement portions of the seedling platform, compared to the case where the interlocking rod is arranged based on the conventional technology, The part where the interlocking rod is placed in the horizontal direction with respect to the support shaft of the seedling vertical feed body in the state where the arrangement height of the interlocking rod is increased to make mud adhesion such as the interlocking rod difficult to occur The seedling vertical feed mechanism can be driven in a state in which it is difficult to generate distortion of the support shaft by interlocking with. When the seedling vertical feed mechanism is driven, the seedling vertical feed body of the seedling vertical feed mechanism feeds the seedlings on the seedling stand vertically toward the seedling planting mechanism.

  Therefore, the seedling longitudinal feed mechanism is driven by the seedling longitudinal feed power taken out from the seedling transverse feed mechanism, and the seedling longitudinal feed can be advantageously performed at an appropriate timing and in terms of structure, etc. It is possible to obtain a high quality walking type rice transplanter that is less prone to failure due to adhesion of mud such as cocoons and driving failure due to member distortion of the seedling vertical feed mechanism and has excellent durability and seedling feed accuracy.

According to the configuration of the first invention, in addition to the above-described functions and effects, the following functions and effects are achieved.

  If the interlocking rod penetrates the partition wall in an inclined posture with respect to the seedling placement surface of the seedling platform, contact between the interlocking rod and the partition wall will not occur regardless of the movement of the interlocking rod in the inclined posture. The size of the through-hole in the partition wall portion in the vertical direction of the seedling platform needs to be larger than the outer diameter of the interlocking rod. According to the configuration of the second aspect of the invention, since the interlocking rod penetrates the partition wall portion in a posture perpendicular to the seedling placement surface in a side view of the vehicle body, the seedling platform vertical direction of the through hole of the partition wall portion Even if the size is relatively small, contact between the interlocking rod and the partition wall can be avoided.

  Therefore, in addition to avoiding failure due to mud adhering to the interlocking rod etc. and the distortion of the seedling vertical feed mechanism, the interlocking pod penetrates the partition wall, and the seedling platform has high strength regardless of the presence of the through hole. A high-quality walking type rice transplanter can be obtained.

According to the configuration of the first invention, in addition to the above-described functions and effects, the following functions and effects are achieved.

According to the structure of the first aspect of the present invention, the arrangement height of the members connected to the interlocking rod in the interlocking rod, power take-out portion and seedling vertical feed mechanism is lowered, and the weight of the interlocking rod, power take-out portion and seedling vertical feed mechanism As a result, the center of gravity of the whole rice transplanter can be prevented from increasing, and a walking type rice transplanter that is less likely to swing from the surface of the center of gravity and can be easily operated can be obtained.

According to the configuration of the first invention, in addition to the above-described functions and effects, the following functions and effects are achieved.

According to the configuration of the first aspect of the invention, the lateral transfer force by the seedling platform transfer body of the seedling horizontal feed mechanism is transmitted to the passive portion of the front connection frame portion, and the lateral transfer force transmitted to the passive portion is The horizontal connection frame part of the seedlings acts on both sides of the seedling stage to cause horizontal transfer of the seedling stage. As a result, a lateral transfer force is applied to both sides of the seedling stage so that the seedling stage can be smoothly and laterally transferred so that the seedling stage is not easily twisted. A structure that only connects at one place in the horizontal direction of the table A simple connection structure can be adopted to obtain a light weight and low cost.
The second aspect of the present invention is a seedling platform that is provided in a tilted attitude that is located on the vehicle body front side of the steering handle toward the rear side of the vehicle body and that is movable in the lateral direction of the vehicle body, and a plurality of seedling planting mechanisms arranged in the lateral direction of the vehicle body And a seedling lateral feed provided on the vehicle body front side of the seedling platform so as to reciprocate in the lateral direction of the vehicle body in conjunction with a seedling planting movement of the seedling planting mechanism by a seedling lateral feed shaft that can be driven to rotate. Walking-type rice planting provided with a mechanism and a seedling vertical feeding mechanism provided on the back side of the seedling mounting base so as to vertically feed the seedlings of the seedling mounting base toward the seedling planting mechanism by a vertically movable seedling feeder In the machine
A power take-out unit for taking out the driving force of the seedling horizontal feed shaft as a seedling vertical feed power as the seedling platform reaches the left and right lateral transfer stroke ends is provided in the seedling horizontal feed mechanism, Provide an interlocking rod for vehicle front-rear direction connected to the output body and the input body of the seedling vertical feed mechanism,
In the partition wall portion positioned between a pair of adjacent seedling placement portions of the seedling placement stand, a through hole through which the interlocking hook is inserted is provided.
A connecting frame having a horizontal connecting frame portion extending from the left and right end portions of the seedling stand toward the front of the vehicle body and a front connecting frame portion erected on the extending end portions of the pair of left and right horizontal connecting frame portions. Prepared,
In the front connection frame portion, a passive portion to which a seedling platform transfer body of the seedling lateral feed mechanism is connected is provided,
The output body of the power take-out part is swingably supported by the front connecting frame part .
According to a third aspect of the present invention, in the configuration of the second aspect of the invention, the interlocking rod penetrates the partition wall portion in a posture perpendicular to the seedling placement surface of the seedling stand in a side view of the vehicle body.
According to a fourth aspect of the present invention, in the configuration of the second aspect of the invention, the interlocking rod is positioned at an arrangement height lower than a straight line passing through the rotation axis of the seedling horizontal feed shaft and the rotation axis of the seedling vertical feed body. doing.

  In the fifth aspect of the invention, the front connecting frame portion is provided with a stopper portion for positioning the output body of the power takeout portion at a standby position.

According to the structure of this 5th invention, in addition to having the effect | action and effect by any one structure of this 1st- 4th invention, there exists the following effect | action and effect.

  According to the configuration of the fifth aspect of the invention, the output body of the power take-out portion can be positioned at the standby position by using the front connecting frame portion as a stopper means, and when the seedling platform is laterally transferred, the output body is Although it can be accurately positioned at the standby position, it can be obtained at a low cost by a simple structure that does not require a special stopper.

In the sixth aspect of the present invention, the power take-out unit is configured to include the output body so as to be swingable and a pair of left and right drive rotors that can be driven at all times.
The output body is in contact with the left driving rotary body so that the output body is swung by the left driving rotary body as the seedling stage reaches the left lateral transfer stroke end. A passive unit and a right passive unit that abuts the right drive rotor so that the output body is swung by the right drive rotor as the seedling stage reaches the right lateral transfer stroke end. And an output body main body having the left passive portion and the right passive portion so as to be swingable integrally.

  According to the structure of this 6th invention, in addition to the effect | action and effect by any one structure of this 1st-5th invention, there exist the following effect | action and effect.

  According to the configuration of the sixth aspect of the invention, the output body is provided with a solid structure in which the left passive portion and the right passive portion are connected by the output body main body, and either the left passive portion or the right passive portion contacts the drive rotating body. Even if it receives the swinging operation force in contact, the seedling vertical feed power that does not generate distortion or is difficult to generate and does not have insufficient output can be output by the output body, and the seedling vertical feed mechanism is driven accurately and firmly. This makes it possible to carry out accurate vertical seedling feeding.

  In the seventh aspect of the present invention, the front connection frame is provided with a seedling presser that presses the leaves so as to avoid contact between the seedlings held on the seedling platform and the seedling planting mechanism. .

According to the structure of this 7th invention, in addition to the effect | action and effect by any one structure of this 1st- 6th invention, there exist the following effect | action and effect.

  According to the configuration of the seventh aspect of the invention, the front connection frame portion can be used as a seedling presser, and the seedling leaf can be pressed and supported so as not to come into contact with the seedling planting mechanism. Although it is easy to avoid damage due to contact, it can be obtained at a low cost by a simple structure that does not require any special seedling presser.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall side view of a walking type rice transplanter according to an embodiment of the present invention. FIG. 2 is an overall plan view of the walking type rice transplanter according to the embodiment of the present invention. As shown in these drawings, a walking type rice transplanter according to an embodiment of the present invention includes a single driveable traveling wheel 1, an engine 2 provided at the front of the vehicle body, and a steering handle 3 provided at the rear of the vehicle body. A self-propelled vehicle having a bonnet 4 that covers the engine 2 and the traveling wheel 1, and a seedling placed on the front side of the steering handle 3 on the front side of the steering wheel 3 so as to be inclined toward the rear side of the vehicle body. A seedling planting portion 20 having a base 21 and a pair of left and right grounding floats 22, 22 provided at the lower part of the body frame 10 of the self-propelled vehicle, and a reserve seedling provided above the rear end side of the bonnet 4. A platform 5 is provided.

This walking type rice transplanter performs two seedling planting operations.
That is, the vehicle body frame 10 of the self-propelled vehicle includes a transmission case 11 connected to the engine 2, a planting transmission case 12 extending from both lateral sides of the transmission case 11 toward the rear of the vehicle body, The first and right planting transmission cases 12 and 12 are each provided with a handle support frame 13 having a front end portion connected to a rear end portion thereof.

  The steering handle 3 includes a laterally extending handle bar connected to the handle support frame 13, and a grip part 3a extending from the left and right ends of the handle bar toward the rear side of the vehicle body.

  The self-propelled vehicle supports the traveling wheel 1 by an extended end portion of a wheel drive case 6 that extends from the mission case 11 so as to swing up and down toward the rear of the vehicle body. The wheel drive case 6 is moved up and down with respect to the transmission case 11 by the elevating cylinder 7 so that the traveling wheel 1 moves up and down with respect to the body frame 10 and the body frame 10 moves up and down with respect to the ground. The part 20 is moved up and down into a descending working state in which the pair of left and right grounding floats 22 and 22 are grounded on the surface and a non-working state in which the pair of left and right grounding floats 22 and 22 are lifted from the surface.

  When the seedling planting unit 20 is moved down and the self-propelled vehicle is driven, the seedling planting unit 20 is moved by the pair of left and right seedling planting mechanisms 23, 23 located on the vehicle body front side of the seedling platform 21. Seedlings are planted on the field leveled by the sliding of the ground float 22.

Next, the seedling planting part 20 will be described in detail.
As shown in FIGS. 2, 3, and 5, the seedling platform 21 includes seedling placement units 21 a and 21 a provided side by side in the vehicle body lateral direction on the surface side of the seedling platform 21, and the lateral direction of the seedling platform 21. A partition wall portion 24 provided so as to partition the pair of left and right seedling placement portions 21a, 21a in the middle portion of the seedling, and a mat-like seedling placed on the seedling placement portion 21a at both lateral ends of the seedling placement stand 21 And a horizontal wall portion 25 provided to receive and act on the floor soil of A (see FIG. 5). The seedling platform slide guide rail 26 disposed on the lower end side of the seedling platform 21 has a pair of left and right seedling outlets 27, 27 provided by forming a pair of left and right cutouts in the seedling receiving portion 26a. I have. The seedling table slide guide rail 26 is supported by the handle support frame 13.

As shown in FIGS. 4 and 5, the pair of left and right seedling planting mechanisms 23, 23 are planted arms supported on the extending end of the planting transmission case 12 via a drive pivot link 28 and a swing link 29. 23a and a seedling planting claw 23b supported on the tip side of the planting arm 23a.
That is, each seedling planting mechanism 23 is configured such that the tip of the seedling planting claw 23b is driven by the driving rotation link 28 being rotated by the driving force transmitted from the mission case 11 via the planting transmission case 12. The planting arm 23a is oscillated and driven by the driving force of the drive rotation link 28 so as to reciprocate up and down while drawing a rotation locus between the lower end of the seedling table 21 and the rice field, and the tip side of the seedling planting claw 23b is When passing through the seedling extraction port 27, one block of seedlings is cut out from the lower end portion of the mat-like seedling A mounted on the pair of left and right seedling mounting portions 21a of the seedling mounting base 21 and taken out. Then, a seedling planting exercise is performed in which the block seedlings taken out are transported downward by the seedling planting claws 23b and planted on the rice field.

  As shown in FIGS. 1 and 5, the seedling platform 21 slides in the lateral direction of the vehicle body on the seedling platform sliding guide rail 26 and the support 14 held on the upper end side of the handle support frame 13. It is supported freely.

  As shown in FIGS. 1, 3, 4, and 5, the seedling platform 21 includes a connecting frame 30 provided at a lower end portion thereof so as to protrude toward the front side of the vehicle body. The connection frame 30 includes an aluminum alloy horizontal connection frame portion 31 extending forward from the pair of left and right lateral wall portions 25 and 25 of the seedling mount 21 and the pair of left and right horizontal connection frame portions 31 and 31. And a front connection frame portion 32 made of an aluminum alloy plate laid on the extended end portion of the front end.

  As shown in FIGS. 10 and 11, the pair of left and right horizontal connecting frame portions 31, 31 includes a connecting block portion 33 extending from the base portion to the back side of the seedling stand. The connecting block portion 33 is connected to the back side of the seedling platform 21 by bolts over the entire width of the seedling platform 21, and constitutes an end portion of a rail member 34 that constitutes a locking portion for the seedling platform slide guide rail 26. Are connected by connecting bolts 35 to improve the attachment strength of the lateral connecting frame portion 31 to the seedling mount 21. The connecting block portion 33 extends from the lateral connecting frame portion 31 toward the inner side in the vehicle body lateral direction, and prevents the lateral width of the seedling placing base 21 from increasing due to the connecting block portion 33.

  As shown in FIG. 7, the front connecting frame portion 32 is provided with a passive portion 37 provided by supporting a plate body via a support body 36 at the center portion in the vehicle body lateral direction of the front facing surface of the vehicle body. The passive portion 37 is connected to the seedling platform transport body 41 of the seedling lateral feed mechanism 40 provided on the self-propelled vehicle and disposed on the vehicle body front side of the seedling platform 21.

  As shown in FIGS. 4 and 7, the seedling lateral feed mechanism 40 includes the seedling platform transport body 41, and also includes a seedling lateral feed shaft 42 that extends laterally through the seedling platform transport body 41. Configured.

  The seedling horizontal feed shaft 42 includes an upper end portion of a transmission case 43 erected at one extending end portion of the pair of left and right planting transmission cases 12 and 12, and the other of the pair of left and right planting transmission cases 12 and 12. It is constructed so as to be able to be driven and rotated by an upper end portion of a support frame 44 erected on the extending end portion of the column. The seedling lateral feed shaft 42 includes a bellows tube-shaped seedling lateral feed shaft cover 45 mounted on one end side of the seedling lateral feed shaft 42 and one end side of the seedling platform transport body 41, and the seedling lateral feed shaft 42. A bellows tube-shaped seedling horizontal feed shaft cover 45 is provided which is mounted across the end side and the other end side of the seedling platform transfer body 41.

  The seedling platform transfer body 41 includes a cylindrical portion 41a externally fitted to the seedling horizontal feed shaft 42 so as to be rotatable and slidable relative thereto, a feed piece body 46 built in the cylindrical portion 41a, and the cylindrical portion 41a. And a bifurcated output portion 41b extending rearward of the vehicle body. The output part 41 b is connected to the passive part 37 of the connection frame 30 via a connection pin 47. The feed piece body 46 is slidably engaged with a feed groove 42 a provided in a spiral shape on the outer peripheral surface of the seedling horizontal feed shaft 42.

  That is, the seedling lateral feed mechanism 40 is always one end side of the seedling lateral feed shaft 42 from the transmission case 11 through the planting transmission case 12 and the transmission case 43 while the seedling planting mechanism 23 is driven. The seedling horizontal feed shaft 42 is rotationally driven by the driving force transmitted to the seedling, and this rotational driving force is converted into a lateral transporting force by the cam action of the feed groove 42a and the feed piece body 46 to convert the seedling platform feed body 41. , The seedling stage transport body 41 is reciprocated in the left-right direction of the vehicle body along the seedling lateral feed axis 42 by the rotational driving force of the seedling lateral feed shaft 42, and the moving force of the seedling platform transport body 41 is increased. The output is output from the output part 41 b to the passive part 37 of the connection frame 30 and transmitted to the seedling stage 21 via the connection frame 30.

  Thus, the seedling platform 21 is moved along the seedling platform slide guide rail 26 in conjunction with the seedling planting movement of the seedling planting mechanism 23 by the transfer operation through the connection frame 30 by the seedling lateral feed mechanism 40. The mat-like seedlings A, which are reciprocated in the left-right direction of the vehicle body and are located in the pair of left and right seedling placement portions 21a, 21a, are transferred in the lateral direction of the vehicle body with respect to the corresponding seedling outlet 27, and a pair of right and left seedling planting mechanisms 23 , 23 to sequentially take out the block seedlings from the lower end portion of the mat-like seedling A from the one end side to the other end side in the lateral direction of the mat-like seedling A.

  As shown in FIGS. 5 and 7, the seedling platform 21 has a pair of upper and lower seedling vertical feed shafts 51, 51 provided on the back side of the lower end portion of the seedling platform 21 in the vertical direction of the seedling platform 21. The seedling vertical feed mechanism 50 is provided.

  The seedling vertical feed mechanism 50 includes the pair of upper and lower seedling vertical feed shafts 51 and 51, and is arranged on the pair of upper and lower seedling vertical feed shafts 51 and 51 in the longitudinal direction of the seedling vertical feed shaft 51 so as to be integrally rotatable. One-way rotary clutch provided at the center of the vertical seedling feed body 52 and the vertical seedling feed shaft 51 on the lower side of the vertical seedling feed shafts 51, 51 53 and an interlocking chain 54 wound around one end side of the pair of upper and lower seedling vertical feed shafts 51, 51.

  The seedling vertical feed body 52 provided with the pair of upper and lower seedling vertical feed shafts 51 and 51 so as to be integrally rotatable is dispersed in a pair of left and right seedling placement portions 21a and 21a. Each of the seedling vertical feeding bodies 52 includes seedling feeding claws arranged in the rotation direction. When each seedling vertical feed body 52 is driven to rotate, the tip end side of the seedling feeding claw protrudes from the back side of the seedling placement portion 21a to the seedling placement surface side and is locked to the floor soil of the mat-like seedling A. By performing the feeding action, the mat-like seedling A is vertically fed toward the seedling planting mechanism 23.

  The seedling vertical feed mechanism 50 includes a swing arm-shaped input body 55 that is rotatably provided integrally with an input member of the one-way rotation clutch 53, and this input body 55 is provided as a lower seedling vertical feed shaft 51. The lower seedling longitudinal feed shaft 51 is driven to rotate by the input body 55 via the one-way rotation clutch 53 by being swung around the rotation shaft core against the return spring 56. The seedling vertical feed body 52 of the seedling vertical feed shaft 51 is rotationally driven in the seedling vertical feed direction, and the upper seedling vertical feed shaft 51 is rotationally driven via the interlocking chain 54 by the lower seedling vertical feed shaft 51. The seedling vertical feed body 52 of the upper seedling vertical feed shaft 51 is rotationally driven in the seedling vertical feed direction, and the mat-like seedlings A located in the pair of left and right seedling placement portions 21a, 21a are seeded by the corresponding seedling vertical feed body 52. It feeds vertically toward the planting mechanism 23.

  As shown in FIGS. 5 and 7, the input body 55 of the seedling vertical feed mechanism 50 is connected to the output body 61 of the power take-out unit 60 provided in the seedling lateral feed mechanism 40 to the partition wall of the seedling platform 21. The through hole 24a provided in the portion 24 and the through hole 32a provided in the front connecting frame portion 32 of the connecting frame 30 are linked by a rod-shaped interlocking rod 70 facing in the longitudinal direction of the vehicle body.

  In addition to the output body 61, the power take-out section 60 includes arm-shaped drive rotary bodies 62 and 63 that are provided at both ends of the seedling horizontal feed shaft 42 so as to be integrally rotatable.

FIG. 9 is a perspective view of the output body 61. As shown in this figure and FIGS. 5 and 7, the output body 61 is connected to a pair of left and right support portions 36 a and 36 a provided by the support body 36 on the vehicle body front-facing surface of the front connection frame portion 32. 64, and a pair of left and right connecting arms 61a and 61a pivotally supported via 64, and an output body main body 61b connected to the free end side of the pair of left and right connecting arms 61a and 61a.
As a result, the output body 61 moves in the left-right direction of the vehicle body with respect to the seedling horizontal feed shaft 42 together with the seedling mount 21, and around the swinging shaft core P in the lateral direction of the vehicle body provided in the pair of left and right connecting pins 64, 64. It swings in the longitudinal direction of the vehicle body with respect to the connecting frame 30.

  The output body 61b includes a left passive portion 65, a right passive portion 66, and an output arm 67 that is positioned between the left passive portion 65 and the right passive portion 66 and connected to the interlocking rod 70. It is provided so that it can swing integrally.

  FIG. 5 is a side view of the output body 61 in a standby state. The output body 61 indicated by a solid line in FIG. 7 indicates the output body 61 in a standby state. As shown in these drawings, the left passive portion 65 does not contact the left driving body 62 and the right passive portion 66 until the seedling stage 21 reaches the left and right lateral transfer stroke ends. Does not come into contact with the right driving body 63, and the return spring 56 swings the output body 61 about the swinging axis P toward the front of the vehicle body, so that the free end 67a of the output arm 67 is The output body 61 is positioned at the standby position by the stopper portion 68 by contacting the front connecting frame portion 32 with a stopper portion 68 disposed on the lower end side of the through hole 32a.

  6 and 8 are side views of the output body 61 in the output state. The output body 61 indicated by a two-dot chain line in FIG. 7 indicates the output body 61 in the output state. As shown in these drawings, as the seedling platform 21 reaches the left lateral transfer stroke end, the left passive portion 65 of the output body 61 and the operation portion 62a composed of the rollers of the left drive body 62 come into contact with each other. As the seedling stage 21 reaches the right lateral transfer stroke end, the right passive portion 66 of the output body 61 and the operation portion 63a composed of the roller of the right drive body 63 come into contact with each other. In any case, the output body 61 is swung from the standby position to the rear side of the vehicle body around the rocking axis P by the left driving body 62 or the right driving body 63, and the output arm 67 moves the interlocking rod 70 behind the vehicle body. Push to the side. At this time, the pair of left and right connecting arms 61 a and 61 a of the output body 61 enter the through hole 32 b of the front connecting frame portion 32. When the swing angle from the standby position of the output body 61 reaches a set swing angle set as corresponding to the required seedling vertical feed stroke, the left drive body 62 is disengaged from the left passive portion 65 or the right drive The body 63 is disengaged from the right passive portion 66, the output body 61 returns to the standby position for the return spring 56, and the interlock rod 70 is pulled back to the vehicle body front side.

  As shown in FIG. 9, the left passive portion 65 is close to the left connecting arm 61 a so as not to cause distortion of the output body 61 when it contacts the left driving body 62 and receives driving force. Is located. The right passive portion 66 is positioned near the right connection arm 61a so that the output body 61 is not easily distorted when it contacts the right drive body 62 and receives a driving force.

  That is, the power take-out unit 60 always rotates the pair of left and right drive bodies 62 and 63 by the seedling lateral feed shaft 42 while the seedling planting mechanism 23 is driven, and the output body 61 together with the seedling mount 21 As the seedling platform 21 reaches the left lateral transfer stroke end, the driving force of the seedling lateral feed shaft 42 is generated by the left driving body 62 and the left passive portion 65 of the output body 61 as the seedling stage 21 reaches the end of the left lateral transfer stroke. The seedling vertical feed power taken out as vertical feed power is transmitted from the output arm 67 of the output body 61 to the input body 55 of the seedling vertical feed mechanism 50 via the interlocking rod 70, and the seedling platform 21 has the right lateral transfer stroke. When reaching the end, the right driving body 63 and the right passive portion 66 of the output body 61 take out the driving force of the seedling horizontal feed shaft 42 as seedling vertical feed power, and the taken out seedling vertical feed power is output from the output body 61. Out From the arm 67 through the associated rod 70 is transmitted to the input member 55 of the seedling longitudinal feeding mechanism 50.

  As a result, as the seedling platform 21 reaches the left and right lateral transfer stroke ends, the power takeout unit 60 takes out the seedling vertical feed power from the seedling horizontal feed shaft 42 and transmits this seedling vertical feed power via the interlocking rod 70. When the seedling vertical feed mechanism 50 is driven by being transmitted to the input body 55 of the seedling vertical feed mechanism 50, the mat-like seedling A positioned on the pair of left and right seedling placement units 21a, 21a is transferred to the seedling placement unit 21a. The seedling vertical feed body 52 feeds the seedling planting mechanism 23 toward the seedling planting mechanism 23 by a vertical feed amount corresponding to the amount of seedlings planted in the vertical direction by the seedling planting mechanism 23, and the pair of right and left seedling planting mechanisms 23, 23 take it out. The size of the block seedling in the vertical direction is set to a predetermined size.

  As shown in FIGS. 5 and 6, the interlocking rod 70 is installed in an assembly posture in which the through hole 24 a of the partition wall portion 24 is inserted in a posture perpendicular to the seedling placement surface 21 b of the seedling placement portion 21 a in a side view of the vehicle body. The size in the vertical direction of the seedling platform provided in the through hole 24a is suppressed to be small so as to prevent the interference between the interlocking rod 70 and the partition wall portion 24.

  As shown in FIG. 5, the interlocking rod 70 is formed from a straight line L that passes through the rotation axis of the seedling horizontal feed shaft 42 and the rotation axis of the seedling vertical feed body 52 provided in the lower seedling vertical feed shaft 51. Has an assembly posture positioned at a low arrangement height, and the arrangement height of the interlocking rod 70, the power take-out unit 60 and the member connected to the interlocking rod 70 by the seedling vertical feed mechanism 50 is lowered, and the interlocking rod 70, The weight of the power take-out unit 60 and the seedling vertical feed mechanism 50 prevents the center of gravity of the whole rice transplanter from increasing. Further, the interlocking rod 70 is connected to a portion located on the opposite side of the swing axis P with respect to the straight line L of the output body 61, and the swinging force of the output body 61 is applied to the input body of the seedling vertical feed mechanism 50. 55 is transmitted efficiently.

  As shown in FIG. 5, a seedling presser 71 having a curved presser action surface 71a projecting rearward of the vehicle body in a side view of the vehicle body is provided on the upper end side of the front connection frame portion 32 of the connection frame 30. is there. The seedling holding part 71 presses and supports the front end side of the mat-like seedling A located on the pair of left and right seedling placement parts 21a and 21a so as to be separated from the seedling planting mechanism 23 by the pressing action surface 71a. Contact between the leaves of the mat-like seedling A and the seedling planting mechanism 23 is prevented.

FIG. 12 is a side view of the rear portion of the vehicle body frame 10. As shown in this figure, the vehicle body frame 10 includes a reinforcing member 15 connected across the handle support frame 13 and the transmission case 43. Although not shown, the vehicle body frame 10 includes a reinforcing member connected across the handle support frame 13 and the support frame 44 similarly to the reinforcing member 15. The left and right reinforcing members 15 efficiently transmit power by preventing distortion of the handle support frame 13 toward the rear side of the vehicle body when the vertical feed power is transmitted from the power take-out unit 60 to the vertical seedling feed mechanism 50. Make it.

[Another Example]
The present invention can be applied to a walking type rice transplanter having a configuration in which seedlings are planted by three or more seedling planting mechanisms arranged in the vehicle body lateral direction instead of the above-described embodiment. In short, the object of the present invention can be achieved by providing a through-hole through which the interlocking rod is inserted in a partition wall portion positioned between a pair of adjacent seedling placement portions of the seedling placement stand.

Overall side view of walking rice transplanter Overall plan view of walking rice transplanter Top view of the lower end of the seedling platform and the seedling horizontal feed mechanism Schematic diagram of transmission structure Side view of output unit in standby state Side view of the output body in the output state Top view of seedling horizontal feed mechanism and power take-out part Side view of the output body in the output state Perspective view of output body and passive part Side view of connecting frame Plan view of the connecting structure of the connecting frame and the seedling stand Side view of the rear part of the body frame

3 Steering Handle 21 Seedling Stand 21a Seedling Placement Part 21b Seedling Placement Surface 23 Seedling Placement Mechanism 24 Partition Wall Part 24a Through Hole 30 Connection Frame 31 Horizontal Connection Frame Part 32 Front Connection Frame Part 37 Passive Part 40 Seedling Horizontal Feeding Mechanism 41 Seedling platform transfer body 42 Seedling horizontal feed shaft 50 Seedling vertical feed mechanism 52 Seedling vertical feed body 55 Input body 60 Power take-out part 61 Output body 61b Output body main body 62, 63 Drive rotating body 65 Left passive part 66 Right passive part 68 Stopper Part 70 interlocking rod 71 seedling presser part L straight line

Claims (7)

A seedling platform that is provided so as to be movable in the lateral direction of the vehicle body in an inclined posture that is positioned on the rear side of the vehicle body toward the upper end side of the front side of the steering handle, a plurality of seedling planting mechanisms arranged in the lateral direction of the vehicle body, and the seedling platform A seedling horizontal feed mechanism provided on the vehicle body front side of the seedling platform so as to reciprocate and move in a lateral direction of the vehicle body in conjunction with a seedling planting movement of the seedling planting mechanism by means of a rotationally driven seedling horizontal feed shaft; A walking type rice transplanter provided with a seedling vertical feed mechanism provided on the back side of the seedling platform so as to vertically feed the seedlings of the base toward the seedling planting mechanism by a vertically movable seedling feed body,
A power take-out unit for taking out the driving force of the seedling horizontal feed shaft as a seedling vertical feed power as the seedling platform reaches the left and right lateral transfer stroke ends is provided in the seedling horizontal feed mechanism, Provide an interlocking rod for vehicle front-rear direction connected to the output body and the input body of the seedling vertical feed mechanism,
In the partition wall portion positioned between a pair of adjacent seedling placement portions of the seedling placement stand, a through hole through which the interlocking hook is inserted is provided .
The interlocking ridge penetrates the partition wall in a posture perpendicular to the seedling placement surface of the seedling platform in a side view of the vehicle body;
The interlocking rod is located at a lower arrangement height than a straight line passing through the rotation axis of the seedling horizontal feed shaft and the rotation axis of the seedling vertical feed body,
A connecting frame having a horizontal connecting frame portion extending from the left and right end portions of the seedling stand toward the front of the vehicle body and a front connecting frame portion erected on the extending end portions of the pair of left and right horizontal connecting frame portions. Prepared,
In the front connection frame portion, a passive portion to which a seedling platform transfer body of the seedling lateral feed mechanism is connected is provided,
It said output member is walk-rice transplanter that is swingably supported by the front coupling frame of the power take-off. A seedling platform that is provided so as to be movable in the lateral direction of the vehicle body in an inclined posture that is positioned on the rear side of the vehicle body toward the upper end side of the front side of the steering handle, a plurality of seedling planting mechanisms arranged in the lateral direction of the vehicle body, and the seedling platform A seedling horizontal feed mechanism provided on the vehicle body front side of the seedling platform so as to reciprocate and move in a lateral direction of the vehicle body in conjunction with a seedling planting movement of the seedling planting mechanism by means of a rotationally driven seedling horizontal feed shaft; A walking type rice transplanter provided with a seedling vertical feed mechanism provided on the back side of the seedling platform so as to vertically feed the seedlings of the base toward the seedling planting mechanism by a vertically movable seedling feed body,
A power take-out unit for taking out the driving force of the seedling horizontal feed shaft as a seedling vertical feed power as the seedling platform reaches the left and right lateral transfer stroke ends is provided in the seedling horizontal feed mechanism, Provide an interlocking rod for vehicle front-rear direction connected to the output body and the input body of the seedling vertical feed mechanism,
In the partition wall portion positioned between a pair of adjacent seedling placement portions of the seedling placement stand, a through hole through which the interlocking hook is inserted is provided.
A connecting frame having a horizontal connecting frame portion extending from the left and right end portions of the seedling stand toward the front of the vehicle body and a front connecting frame portion erected on the extending end portions of the pair of left and right horizontal connecting frame portions. Prepared,
In the front connection frame portion, a passive portion to which a seedling platform transfer body of the seedling lateral feed mechanism is connected is provided,
A walking type rice transplanter in which the output body of the power take-out portion is swingably supported by the front connecting frame portion . The walking type rice transplanter according to claim 2 , wherein the interlocking rod penetrates the partition wall portion in a posture perpendicular to the seedling placement surface of the seedling stand in a side view of the vehicle body . The walking type rice transplanter according to claim 2 , wherein the interlocking rod is located at a lower arrangement height than a straight line passing through a rotation axis of the seedling horizontal feed shaft and a rotation axis of the seedling vertical feed body . The walking type rice transplanter according to any one of claims 1 to 4 , wherein a stopper portion that positions the output body of the power take-out portion at a standby position is provided on the front connection frame portion. The power take-out unit is configured to include the output body so as to be swingable and a pair of left and right drive rotors that can be driven at all times,
The output body is in contact with the left driving rotary body so that the output body is swung by the left driving rotary body as the seedling stage reaches the left lateral transfer stroke end. A passive unit and a right passive unit that abuts the right drive rotor so that the output body is swung by the right drive rotor as the seedling stage reaches the right lateral transfer stroke end. A walking type rice transplanter according to any one of claims 1 to 5, further comprising an output body main body and an output body main body having the left passive portion and the right passive portion so as to freely swing together. The said front connection frame part is provided with the seedling leaf holding | pressing part which acts on the said leaf so that the contact with the leaf of the seedling currently hold | maintained at the said seedling stand and the said seedling planting mechanism may be avoided . The walking type rice transplanter as described in any one of Claims .

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