JP2009278890A - Planting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planting apparatus which can simplify a transmission route for transmitting a rotation power from a planting input shaft to a seedling tray and a longitudinal conveying belt mechanism, and a transmission route for transmitting a rotation power from the planting input shaft to a planting unit, and can achieve the downsizing and cost reduction of the whole planting apparatus. <P>SOLUTION: A plurality of driving-side gears 110 relatively rotatably supported on a driving shaft 100, and a plurality of driven-side gears 112 are relatively non-rotatably supported on a first output shaft 101. Portions extended from the planting driving case 61 to one outside of a machine frame width direction and the other outside in the first output shaft 101 act as a shaft 87 for horizontally conveying the seedling tray 16 and as a shaft 88 for vertically conveying the seedling tray 16. A planting driving-side gear 111 is relatively non-rotatably supported on the driving shaft 100, and a planting driven-side rotator 113 is relatively non-rotatably supported on the second output shaft 102, and the second output 102 acts as the planting driving shaft 78 of a planting unit 210. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a planting work device that is detachably connected to the rear of a traveling machine body of a rice transplanter.

A planting frame that is detachably connected to the rear of the traveling machine body, a seedling stage supported by the planting frame so as to be capable of reciprocating along the machine body width direction, and a seedling placed on the seedling stage A longitudinal feed belt mechanism for longitudinal feeding, a planting unit for planting seedlings placed on the seedling platform, a lateral feed speed change mechanism for shifting the reciprocating speed of the seedling platform, A planting input shaft that is operatively connected to the PTO shaft of the traveling machine body, a planting drive case that supports the planting input shaft and accommodates the lateral feed speed change mechanism, and a rotation for reciprocating the seedling platform A transverse feed shaft for outputting power; a longitudinal feed shaft for outputting rotational power for driving the longitudinal feed belt mechanism; and a planting drive shaft for outputting rotational power for driving the planting unit. Conventional planting devices are known.
Rotational power from the traveling machine input from the planting input shaft is output to the vertical feed shaft, horizontal feed shaft, and planting drive shaft by a transmission mechanism in the planting drive case. At this time, constant speed rotational power is output to the planting drive shaft, while the lateral feed shaft is shifted to a desired speed via the lateral feed speed change mechanism.
For this reason, conventionally, the transverse feed shaft, the longitudinal feed shaft, and the planting drive shaft have a mutually parallel and separate shaft structure (see, for example, Patent Document 1).

  Therefore, on the structure having a plurality of axes, there are a transmission path for transmitting rotational power from the planting input shaft to the seedling stage and the vertical feed belt mechanism, and a transmission path for transmitting rotational power from the planting input shaft to the planting unit. As a result, the transmission path becomes complicated and the gears and bearings in the planting drive case are required for each shaft, which increases the number of parts, increasing the size and cost of the planting drive case. There was a problem to do.

On the other hand, the structure which has arrange | positioned the longitudinal feed shaft and the horizontal feed shaft coaxially is also well-known (for example, refer patent document 2 and 3).
According to the configuration described in Patent Documents 2 and 3, the rotational driving force of the planting input shaft provided in the center part in the body width direction is output from the planting input shaft to the planting driving gear via the bevel gear pair, Furthermore, it has the structure which outputs to a transverse feed shaft and the longitudinal feed shaft coaxial with this via the transverse feed speed change mechanism provided in the body width direction one end part.
By adopting such a configuration, the transverse feed shaft and the longitudinal feed shaft become a common shaft, so that the number of shafts can be reduced.

However, in the configurations described in Patent Documents 2 and 3, there is a problem that a transmission path from the planting input shaft to the transverse feed shaft and the longitudinal feed shaft becomes complicated.
That is, the transmission mechanism (bevel gear pair) from the planting input shaft to the planting drive shaft and the transmission mechanism (lateral feed speed change mechanism) from the planting drive shaft to the lateral feed shaft and the vertical feed shaft are separated. Therefore, the increase in the number of parts of the transmission case and the increase in weight are problematic, and there is a problem in that the planting work apparatus is increased in size as a whole.
JP 2004-194575 A JP 2002-272219 A JP 2002-262626 A

  The present invention has been made in view of the prior art, and is a planting work device that is detachably connected to the rear of a traveling machine body, and includes rotational power from a planting input shaft to a seedling stage and a vertical feed belt mechanism. The transmission path for transmitting the power and the transmission path for transmitting the rotational power from the planting input shaft to the planting unit can be simplified, and the entire planting work apparatus can be reduced in size and cost. One object is to provide a planting device that can be used.

  A planting work apparatus according to the present invention includes a planting frame that is detachably connected to the rear of a traveling machine body, a seedling table that is supported by the planting frame so as to be capable of reciprocating along the machine body width direction, A vertical feed belt mechanism for vertically feeding the seedling placed on the seedling stage, a planting unit for planting the seedling placed on the seedling stage, and a reciprocating speed of the seedling stage A lateral feed speed change mechanism, a planting input shaft operatively connected to the PTO shaft of the traveling machine body, and a planting drive case that supports the planting input shaft and accommodates the lateral feed speed change mechanism. The planting drive case is supported by the planting frame so that the planting input shaft is along the longitudinal direction of the machine body, and the planting drive case is operatively connected to the planting input shaft. A drive shaft extending in the width direction, and a first drive shaft disposed in parallel to the drive shaft; A second output shaft is supported, and on the drive shaft, a plurality of drive side gears in the lateral feed transmission mechanism are supported so as to be relatively rotatable, and a planting drive side gear is supported so as not to be relatively rotatable. The first output shaft supports a plurality of driven gears in the lateral transmission speed change mechanism in a state where the driven gears are engaged with the plurality of drive gears, respectively, and is relatively non-rotatable. The planted driven side rotator operatively connected to the planting drive side gear is supported so as not to rotate relative to the planting drive side gear. The laterally extending portions act as a lateral feed shaft that outputs rotational power for reciprocating the seedling platform and a vertical feed shaft that outputs rotational power for driving the vertical feed belt mechanism, respectively. , The second output shaft is It is characterized in that acting as planting drive shaft for outputting rotational power for driving the urging unit.

According to the planting work device having the above configuration, the rotational driving force of the PTO shaft of the traveling machine body transmitted through the planting input shaft supported by the planting drive case is operatively connected to the planting drive shaft. Is transmitted to the drive shaft along the body width direction. The drive shaft is supported by the planting drive case, and transmits rotational power to first and second output shafts that are also supported by the planting drive case.
Here, the drive shaft supports a plurality of drive-side gears in the lateral feed transmission mechanism so as to be relatively rotatable, and the first output shaft supports a plurality of driven-side gears in the lateral feed transmission mechanism so as not to be relatively rotatable. The rotational power of the drive shaft is changed by selectively supporting one of the drive side gears on the drive shaft so as not to be relatively rotatable with the plurality of drive side gears and the plurality of driven gears engaged. And transmitted to the first output shaft. A portion of the first output shaft that extends from the planting drive case to the outer side in the body width direction and the outer side on the other side outputs a rotational power for reciprocating the seedling platform, respectively. It acts as a longitudinal feed shaft that outputs rotational power for driving the shaft and the longitudinal feed belt mechanism.
The planting drive side gear is supported on the drive shaft so as not to be relatively rotatable, and the planting driven side rotating body is supported on the second output shaft so as not to be relatively rotatable. And the planted driven rotating body are operatively connected, whereby the rotational power of the drive shaft is transmitted to the second output shaft. Then, the second output shaft acts as a planting drive shaft that outputs rotational power for driving the planting unit.

In this way, the planting drive case that supports the planting input shaft that inputs rotational power from the PTO shaft of the traveling machine body is connected to the planting input shaft so that the drive shaft extends along the machine body width direction. The first and second output shafts are supported along the body width direction in a state of being supported and operatively connected to the drive shaft, and a lateral feed speed change mechanism is supported on the drive shaft and the first output shaft, Of the first output shaft, portions extending from the planting drive case to the outer side in the body width direction and the outer side of the other side are respectively used as a lateral feed shaft and a longitudinal feed shaft, and the second output shaft is planted. Since it is used as an attached drive shaft, there are a transmission path for transmitting rotational power from the planting input shaft to the seedling stage and the vertical feed belt mechanism, and a transmission path for transmitting rotational power from the planting input shaft to the planting unit. Simplification can be achieved. Accordingly, it is possible to reduce the size and cost of the entire planting apparatus.
Furthermore, since the machine width direction one side and the other side of the first output shaft are used as the transverse feed shaft and the longitudinal feed shaft, respectively, compared to the conventional configuration in which the transverse feed shaft and the longitudinal feed shaft are arranged in parallel, The number of parts such as transmission gears and bearings can be reduced, and therefore the planting drive case can be reduced in size and cost.

  Preferably, a planting counter rotating body including a planting counter gear meshed with the planting side drive gear is supported on the first output shaft so as to be relatively rotatable, and the planting driven side rotating body is The planting counter rotator is connected via an endless transmission member.

In this case, the rotational power of the drive shaft is transmitted to the planting counter rotating body that is rotatably supported by the first output shaft via the planting drive side gear and the planting counter gear. Further, the rotational power of the planting counter rotating body is transmitted to the planting driven side rotating body via the endless transmission member, and rotates the second output shaft.
In this way, the first output shaft is also used as a counter shaft inserted in the power transmission path from the drive shaft to the second output shaft, thereby reducing the number of parts and reducing the planting drive case. Can be planned.

  Preferably, the first output shaft has a first shaft and a second shaft that are coaxially connected so as not to rotate relative to each other about the axis, and the first shaft and the second shaft are the transverse feed shaft and the longitudinal feed. It forms an axis.

In this case, the first shaft that forms the transverse feed shaft and the second shaft that forms the longitudinal feed shaft are connected to each other so as not to rotate relative to each other.
Therefore, it is possible to prevent an increase in manufacturing cost by connecting the lateral feed shaft and the longitudinal feed shaft after separately forming them.

According to the planting work device according to the present invention, the width of the vehicle body in a state where the planting drive case supporting the planting input shaft for inputting rotational power from the PTO shaft of the traveling aircraft body is operatively connected to the planting input shaft. The drive shaft is supported along the direction, and the first and second output shafts are supported along the body width direction while being operatively connected to the drive shaft, and the drive shaft and the first output shaft are supported on the drive shaft. Supporting a lateral feed speed change mechanism, using the first output shaft as a lateral feed shaft and a longitudinal feed shaft, respectively, extending from the planting drive case to the outer side in the body width direction and the outer side on the other side, and Since the second output shaft is used as a planting drive shaft, a transmission path for transmitting rotational power from the planting input shaft to the seedling stage and the vertical feed belt mechanism, and from the planting input shaft to the planting unit Simplified transmission path for transmitting rotational power It is possible. Accordingly, it is possible to reduce the size and cost of the entire planting apparatus.
Furthermore, since the machine width direction one side and the other side of the first output shaft are used as the transverse feed shaft and the longitudinal feed shaft, respectively, compared to the conventional configuration in which the transverse feed shaft and the longitudinal feed shaft are arranged in parallel, The number of parts such as transmission gears and bearings can be reduced, and therefore the planting drive case can be reduced in size and cost.

Embodiments according to the present invention will be described below with reference to the accompanying drawings.
First, the whole structure of the rice transplanter A in this embodiment is demonstrated.
In FIG.1 and FIG.2, the side view and top view of the rice transplanter to which the planting work apparatus which concerns on this embodiment is applied are shown.

The rice transplanter A of the present embodiment includes a traveling machine body 1 and a planting work device 15 attached to the rear part of the traveling machine body.
As shown in FIGS. 1 and 2, the traveling machine body 1 includes a vehicle body frame 3, a drive source 2 placed on the front portion of the vehicle body frame 3, and a state in which the travel aircraft body 1 is operatively connected to the drive source 2. A mission case (not shown) disposed behind the drive source 2, a pair of front axle cases 5 disposed on both sides of the transmission case in the vehicle width direction, and the pair of front axle cases 5 are supported respectively. A pair of paddy field traveling front wheels 6, a rear axle case 7 connected to the rear part of the transmission case via a connection frame 53, and a pair of paddy field traveling rear parts supported on both sides in the vehicle width direction of the rear axle case 7. And a ring 8.

  Further, the traveling machine body 1 is supported on the vehicle body frame 3 via a hood 9 that covers the drive source 2, a vehicle body cover 11 that covers the transmission case, and a seat frame 12 that is positioned above the vehicle body cover 11. And a steering handle 14 disposed in front of the driver seat 13 and at the rear portion of the bonnet 9.

In addition, the code | symbols 10 and 36 in FIG.1 and FIG.2 are the preliminary seedling mounting stand and fertilizer which are attached to the said traveling body 1 so that attachment or detachment is possible according to a specification.
In the illustrated form, the preliminary seedling stage 10 is provided on both sides of the bonnet 9 in the vehicle width direction.
The fertilizer application device 36 includes a fertilizer hopper 37 and a blower 38 that pumps the fertilizer in the fertilizer hopper 37.
In this embodiment, the fertilizer application device 36 includes a plurality of fertilizer units 360 corresponding to the number of planting strips of the planter A, and fertilizers fed from the fertilizer units 360 are fed by a single fertilizer blower 38. It is comprised so that it can pump.

3 and 4 show a front perspective view and a partial right side view of the planting work device of the present embodiment.
As shown in FIGS. 1 to 4, the planting work device 15 is supported by a planting frame 20 and the planting frame 20 via a lower rail 18 and an upper rail 19 so as to be capable of reciprocating in the vehicle width direction. A vertical feed belt mechanism having a seed feed stage 16 and a vertical feed belt mounted on the seed stage so that the seed mat placed on the seed stage 16 can be conveyed (vertically fed) downward; And a planting unit 210 for planting seedlings placed on the seedling table 16. The planting unit 210 includes a rotary case 21 that is rotatably supported by the planting frame 20, and a claw case 22 that is supported by the rotary case 21 and has a planting claw 17. I have.

In the present embodiment, the planting work device 15 is for eight strips in which eight single-row seedling mounts 16 on which one row of seedling mats can be placed are arranged side by side in the vehicle width direction.
The rotary case 21 is provided in a pair of left and right for each pair of adjacent seedling platforms 16, and a pair of claw cases 22 is provided on each side of each rotary case 21 in the vehicle width direction (two in total, four in total). It has been.
That is, in this embodiment, the planting device 15 has four pairs of rotary cases 21 and 16 claw cases 22.
In addition, the fertilizer application device 36 includes eight fertilizer units 360. The fertilizer application unit 360 is configured to be capable of selectively performing fertilization application / stop for each item via an operation wire (not shown) operatively connected to each other.

5 and 6 are a top view and a perspective view of the planting frame of the present embodiment.
2 to 6, the planting frame 20 includes a planting input shaft 75 that is detachably connected to a PTO shaft 1 a (see FIG. 9 described later) provided on the traveling machine body 1, A planting drive case 61 that supports the planting input shaft 75, a planting lateral frame 63 that extends in the width direction of the aircraft while supporting the planting drive case 61, and a state that is operatively connected to the planting input shaft 75. The planting drive shaft 78 supported by the planting drive case 61 along the width direction of the machine body and the front end portion connected to the planting lateral frame 63 so as to extend in the longitudinal direction of the machine body and planted at the rear end part. A vertical frame 62 to which the attachment unit 210 is connected, a planting claw drive shaft 92 inserted into the vertical frame 62 in a state of being operatively connected to the planting drive shaft 78, and the planting claw drive shaft 92. To be along the width of the fuselage in the connected state A rotating shaft 83 supported by the vertical frame 62, a rotary case 21 rotated by the rotating shaft 83, and a pair of left and right erected on the one side and the other side of the planting horizontal frame 63 in the body width direction. A side frame 65 and a rolling frame 66 extending in the vehicle width direction so as to connect the upper portions of the pair of left and right side frames 65 are provided.

  In this embodiment, as shown in FIGS. 1 and 3, a pair of line drawing markers (examples shown) for drawing a reference line on the next farm field to be planted next time on the pair of left and right side frames 65, respectively. In the unwinding state (drawing state) and retracted state by human operation from the driver's seat 13 via operation wires (not shown) operatively connected to each of the pair of drawing markers 651. Can be switched.

The planting drive case 61 is supported by the planting lateral frame 63 so that the planting input shaft 75 is along the front-rear direction of the body, and the planting drive case 61 is operatively connected to the planting input shaft 75. In this state, the drive shaft 100 along the body width direction, and the first output shaft 101 and the second output shaft 102 arranged in parallel to the drive shaft 100 are supported.
Then, portions of the first output shaft 101 extending from the planting drive case 61 to one side (right side) outward and the other side (left side) outward of the body width direction reciprocate the seedling mount 16 respectively. Acting as a transverse feed shaft 87 that outputs rotational power for driving and a longitudinal feed shaft 88 that outputs rotational power for driving the longitudinal feed belt mechanism, and the second output shaft 102 causes the planting unit 210 to move. It acts as a planting drive shaft 78 that outputs rotational power for driving.

  In the above configuration, the rotational driving force of the PTO shaft 1a of the traveling aircraft 1 transmitted through the planting input shaft 75 supported by the planting drive case 61 is the width of the vehicle body in a state where the planting drive case 61 is supported. The planting claw is transmitted to the planting drive shaft 78 supported by the planting horizontal frame 63 extending in the direction, and is inserted into the vertical frame 62 supported by the planting lateral frame 63 along the longitudinal direction of the machine body. The rotary case 21 provided with the planting claws 17 is rotationally driven by rotating the rotary shaft 83 supported by the vertical frame 62 along the width direction of the machine body via the drive shaft 92.

As shown in FIGS. 1 and 3, the planting frame 20 of the present embodiment includes a hitch frame 23 erected at the center of the planting lateral frame 78 in the body width direction, and a top connected to the hitch frame 23. It is connected to the traveling machine body 1 through an elevating link mechanism 26 including a link 24 and a lower link 25 so as to be movable up and down.
The traveling machine body 1 is provided with a lifting cylinder 27 (see FIG. 1) connected to the lower link 25, and the planting frame 20 is lifted and lowered by the lifting cylinder 27. .

Further, the planting frame 20 is swingable in the vehicle width direction with respect to the traveling machine body 1, so that even if the traveling machine body 1 is tilted in the left-right direction, the planting work device 15 is horizontal. It can be held in a state.
Specifically, as shown in FIGS. 3 and 5, the planting frame 20 is a fulcrum member 69 connected to the planting drive case 61, and is provided on the hitch frame 23 along the longitudinal direction of the vehicle. A pair of fulcrum members 69 supported so as to be swingable about the rolling fulcrum shaft 68 and a pair of lower end portions connected to the fulcrum member 69 and upper end portions connected to the rolling frame 66 via left and right fixing brackets 70. Left and right frames 71.

  A hydraulic rolling cylinder 73 is interposed between the hitch frame 23 and one of the left and right fixing brackets 70. By controlling the hydraulic rolling cylinder 73 to advance and retract, the planting work device 15 is It can be swung around the rolling fulcrum shaft 68.

In the figure, reference numeral 64 denotes a side bumper that is foldably provided at the left and right outermost ends of the planting horizontal frame.
Reference numeral 72 in the figure denotes an oblique reinforcing member that connects the left and right fixing brackets 70 and the lower ends of the left and right side frames 65 respectively.
Furthermore, 33, 34, and 35 in the figure are a center two-level flat center float, left and right two-level flat side float, and left and right outermost one-level flat auxiliary float.

  In the present embodiment, as shown in FIGS. 4 and 6, the planting lateral frame 63 includes a vertical wall 631, an upper wall 632 extending forward and rearward from an upper end portion of the vertical wall 631, and the vertical wall 631. The lower wall 633 extending forward and rearward from the lower end of the upper wall 163 and the connecting wall 634 connecting the upper wall 632 and the front end of the lower wall 633 are integrally formed, and the rear side is an opening 630. More specifically, the planting lateral frame 63 integrally includes the vertical wall 631, a rear upper wall 632 b and a rear lower wall 633 b extending rearward from the vertical wall 631, and the rear side is an opening 630. ing. Further, the planting lateral frame 63 includes a front upper wall 632f and a front lower wall 633f extending forward from the vertical wall 631, and the connecting wall 634 connecting the front end portions of the front upper wall 632f and the front lower wall 633f. It has one. The planting drive shaft 78 is accommodated in a space defined by the vertical wall 631, the rear upper wall 632b, and the rear lower wall 633b.

  According to the frame structure of the planting work device 15 having the above-described configuration, the hitch frame 23 is erected at the center in the body width direction, and the pair of side frames 65 are erected on one side and the other side in the body width direction. The attached horizontal frame 63 extends in the body width direction. A front end of a vertical frame 62 is connected to the planting horizontal frame 63 and extends in the longitudinal direction of the machine body. A planting unit 210 is connected to the rear end of the vertical frame 62.

Here, a U-shaped cross section defined by the vertical wall 631, the rear upper wall 632 b and the rear lower wall 633 b of the planting horizontal frame 63 and having an opening 630 on the rear side is a part of the planting drive shaft 78. It can be used as an installation area.
That is, the planting drive shaft 78 is accommodated in a space defined by the vertical wall 631, the rear upper wall 632b, and the rear lower wall 633b of the planting horizontal frame 63. At this time, the rear side of the planting horizontal frame 63 is an opening 630, and the planting drive shaft 78 accommodated in the space is accessible.

Thus, the planting horizontal frame 63 surrounds the planting drive shaft 78 in three directions (front, upper and lower) except for the rear, so that the planting horizontal frame 63 is not divided by the support portion of the vertical frame 62. Since it can form integrally in the whole width direction, while being able to raise frame intensity | strength, a number of parts can be reduced and an assembly property can be improved. In addition, since the rear side of the planting horizontal frame 63 is opened, it is easy to access the drive system including the planting drive shaft 78, so that maintainability can be maintained well. Furthermore, since the planting drive shaft 78 is surrounded on three sides by the planting lateral frame 63, it is possible to effectively prevent mud or the like from adhering to the planting drive shaft 78 or an external impact.
Further, by improving the rust prevention property of the planting drive shaft 78 itself, it is not necessary to improve the sealing property and airtightness with respect to the planting lateral frame 63, and the increase in the number of parts and the weight can be suppressed.

In the planting lateral frame 63, the vertical wall 631, the front upper wall 632f, the front lower wall 633f, and the connecting wall 634 are integrated. Thereby, the rigidity of the planting horizontal frame 63 can be further increased.
In addition, since the rigidity of the planting horizontal frame 63 can be secured on the front side of the planting horizontal frame 63, the rear upper wall into which the vertical frame 62 is inserted without reducing the rigidity of the planting horizontal frame 63. The thickness of 632b and the back lower wall 633b can be made thin, and the vertical length of the planting lateral frame 63 can be made as short as possible.

In the present embodiment, the planting lateral frame 63 is integrally formed over the entire width direction.
Furthermore, a notch 632c is provided in the rear upper wall 632b of the support portion of the planting drive case 61 of the planting horizontal frame 63, and the planting drive case 61 is supported by the notch 632c. Thus, the planting input shaft 75 is operatively connected to the planting drive shaft 78 in the space of the planting lateral frame 63.

Further, the vertical frame 62 of the present embodiment is supported in a state where the front end portion is inserted into the space of the planted horizontal frame 63, and the rear end portion is rearward from the rear opening 630 of the planted horizontal frame 63. It is extended.
More specifically, the vertical frame 62 is detachably connected to the planting horizontal frame 63 in a state of being in contact with the rear surface of the vertical wall 631.
More specifically, the front end portion of the vertical frame 62 has a flange portion 621 that comes into contact with the rear surface of the vertical wall 631. The flange portion 621 can be inserted in the front-rear direction. A plurality (four in this case) of screw holes 621a are provided. The flange portion 621 has a substantially rectangular shape whose vertical length is substantially equal to the length between the inner surfaces of the rear upper wall 632b and the rear lower wall 633b.

In this case, the vertical frame 62 on which the planting claw drive shaft 92 is supported is inserted into the space of the planting horizontal frame 63 from the rear opening 630 and is in contact with the rear surface of the vertical wall 631 of the planting horizontal frame 63. In this state, the vertical frame 62 is supported by the planting horizontal frame 63 by inserting and fixing the screw 621b into the screw hole 621a.
Therefore, the positioning of the planting drive shaft 78 and the planting claw drive shaft 92 can be facilitated, and the assemblability can be further improved.
Further, when the vertical frame 62 is inserted into the planting horizontal frame 63, the upper end and the lower end of the flange portion 621 are inserted while sliding on the inner surfaces of the rear upper wall 632b and the rear lower wall 633b. In the operation connection work between the planting drive shaft 78 and the planting claw drive shaft 92, the shaft alignment (especially tilt adjustment) is further facilitated.

Here, in the closed space defined by the vertical wall 631, the front upper wall 632f, the front lower wall 633f, and the connecting wall 634, for example, the pair of drawing markers 651 and / or the plurality of fertilization units 360, etc. The operation wire can be stored.
In the present embodiment, the planting lateral frame 63 includes a plurality of intermediate walls 635 that connect the connection wall 634 and the vertical wall 631 between the upper wall 632 and the lower wall 633. Here, the intermediate wall 635 is substantially parallel to the upper wall 632 and the lower wall 633.

In this case, an intermediate wall 635 is provided in a space surrounded by the upper wall 632, the lower wall 633, the connecting wall 634, and the vertical wall 631 of the planting horizontal frame 63. Thereby, the space is separated into a plurality of spaces by the intermediate wall 635.
Therefore, while further improving the strength of the planted horizontal frame 63, the plurality of hollow portions separated by the intermediate wall 635 can be used more effectively as installation spaces for the operation wires.

As described above, in addition to or instead of the configuration in which various operation wires are stored in the closed space, the lower wall 633 may be formed with a groove 633a that opens upward along the body width direction. Good.
In FIG. 11, the side view of the planting horizontal frame for demonstrating the other example of the operation wire accommodation in the planting horizontal frame of this embodiment is shown.

In this case, as shown in FIG. 11, a groove 633a is formed in the rear lower wall 633b of the planting horizontal frame 63 so as to open upward along the body width direction, and an operation wire is arranged in the groove 633a. By providing, the operation wire is held in a state along the machine body width direction of the planting lateral frame 63.
As a result, the operation wire can be held in position only by placing the operation wire along the groove 633a without providing a fixture such as a band clamp.
Further, as shown in FIG. 11, a fertilization hose (not shown) from which fertilizer is discharged from the fertilization unit 210 for each strip is suspended and fixed to the rear upper wall 632 b of the planting horizontal frame 63. You may provide the hole 632a for fixing a fixing tool for every strip | line along the body width direction.

Here, the structure for reciprocating the seedling mounting table 16 in the vehicle width direction and the structure of the longitudinal feed belt mechanism will be described.
7 and 8 show an internal plan view and an internal perspective view in the vicinity of the planting drive case of the present embodiment. Moreover, in FIG. 9, the transmission mechanism figure in the planting work apparatus of this embodiment is shown.

As described above, in the planting drive case 61, as shown in FIGS. 7, 8, and 9, the drive shaft 100 along the body width direction in the state of being operatively connected to the planting input shaft 75, A first output shaft 101 and a second output shaft 102 arranged in parallel to the drive shaft 100 are supported, and one side (right side) of the first output shaft 101 from the planting drive case 61 in the body width direction. ) The portions extending outward and the other side (left side) outward, respectively, rotate to drive the lateral feed shaft 87 that outputs rotational power for reciprocating the seedling mounting table 16 and the longitudinal feed belt mechanism. It acts as a longitudinal feed shaft 88 that outputs power.
A bevel gear 75b is supported on the planting input shaft 75 in a relatively non-rotatable manner. A bevel gear 100b is supported on the drive shaft 100 in a relatively non-rotatable manner, and the bevel gears 75b and 100b are engaged with each other. The planting input shaft 75 and the drive shaft 100 are operatively connected in a state of being arranged substantially perpendicular to each other.
In the present embodiment, the first output shaft 101 has a first shaft and a second shaft that are coaxially connected so as not to rotate relative to each other about the axis, and the first shaft and the second shaft are the transverse feed shaft 87. And the longitudinal feed shaft 88 is formed.

  Further, the transverse feed shaft 87 and the longitudinal feed shaft 88 are rotatable around the axis of the planting drive case 61 in a state in which one end thereof is operatively connected to the planting input shaft 75 along the vehicle width direction. The other end is supported by a bearing plate (not shown) fixed to the right side frame 65 so as to be rotatable about its axis.

The transverse feed shaft 87 has a screw portion 87a on the outer peripheral surface.
A slider 90 that is operatively connected to the seedling table 46 is screwed to the screw portion 87a. When the lateral feed shaft 87 rotates about the axis, the slider 90 reciprocates along the vehicle width direction. Accordingly, the seedling stage 16 reciprocates along the vehicle width direction.

The longitudinal feed shaft 88 is provided with a pair of push cams 91, and the longitudinal feed belt mechanism is operatively driven by each of the pair of push cams.
That is, a belt drive shaft (not shown) along the vehicle width direction is supported on the seedling stage 16 so as to be rotatable about an axis, and is spaced apart from the belt drive shaft. An endless seedling feeding belt is wound around the belt driven shaft (not shown).
The belt drive shaft is engaged with one and the other of the pair of push cams 91 when the seedling stage 16 reaches the moving end on one side and the other side in the vehicle width direction. A belt driven cam (not shown) is provided.

With this configuration, the belt drive shaft does not rotate while the seedling stage 16 is moving in the vehicle width direction, but when the seedling stage 16 reaches the moving end in the vehicle width direction, the push cam 91 The belt drive shaft rotates about the axis only while the belt driven cam is engaged, so that the seedling mat placed on the seedling placing table 16 is lowered by a predetermined pitch by the seedling feeding belt. To be transported to.
A one-way clutch (not shown) is interposed between the belt driven cam and the belt drive shaft, and when the engagement with the push cam 91 is released, The belt driven cam is returned to the initial position by the return urging member.

In the present embodiment, a lateral feed speed change mechanism that changes the reciprocating speed of the seedling table 16 is provided in the planting drive case 61.
The lateral feed speed change mechanism is provided to change the scraping width of the seedling mat taken out by the planting claws 17 in the planting unit 210 according to the seedling density of the seedling mat placed on the seedling placing table 16. .
That is, when the seedling density of the seedling mat placed on the seedling stage 16 is large, the lateral feed speed change mechanism reduces the moving speed in the machine width direction of the seedling stage 16 and the seedling density is small. Can increase the moving speed of the seedling platform 16 in the machine width direction by the lateral feed speed change mechanism, thereby maintaining the desired amount of seedling scraped off by the planting claws 17.
The lateral feed transmission mechanism includes a plurality of transmission gear trains and a switching mechanism 120 that selectively places one of the plurality of transmission gear trains in a transmission state.
The plurality of transmission gear trains include a plurality of drive side gears and a plurality of driven side gears respectively meshed with the plurality of drive side gears.

  Specifically, the drive shaft 100 supports a plurality of drive-side gears 110 in a lateral feed speed change mechanism that changes the reciprocating speed of the seedling table 16 so as to be relatively rotatable, and the planting drive-side gear 111 is relatively rotated. The first output shaft 101 is supported by the first output shaft 101 such that the plurality of driven gears 112 in the lateral feed speed change mechanism are engaged with the plurality of driving gears 110 so as not to rotate relative to each other. The second output shaft 102 supports a planting driven side rotating body 113 operatively connected to the planting driving side gear 111 so as not to be relatively rotatable.

  Further, in the present embodiment, a planting counter rotating body 115 including a planting counter gear 114 meshed with the planting-side drive gear 111 is supported on the first output shaft 101 in a relatively rotatable manner. The planting driven side rotating body 113 is connected to the planting counter rotating body 115 via an endless transmission member 116. In the present embodiment, the planting driven side rotating body 113 and the planting counter rotating body 115 are constituted by pulleys, and the endless transmission member 116 is constituted by a transmission belt wound around the pulleys. However, the present invention is not limited to this.

FIG. 10 is a partial perspective view of the vicinity of the switching mechanism of the lateral feed speed change mechanism in the present embodiment. In FIG. 10, only one of the plurality of drive side gears 110 is shown, and the other drive side gears 110 are not shown. The planting drive side gear 111 is also not shown.
In the present embodiment, the switching mechanism 120 is configured to selectively make any one of the plurality of drive-side gears 110 relatively non-rotatable with the drive shaft 100.
Specifically, as shown in FIG. 10, the drive shaft 100 is formed with an axial key groove 100a extending in the axial direction, and the plurality of drive gears 110 have gear side key grooves 110a on the inner peripheral surface thereof. Is formed.

The switching mechanism biases the shift key 121 inserted in the shaft-side key groove 100a of the drive shaft 100 so as to be movable in the axial direction toward the inner peripheral surface of the drive-side gear 110. It has an urging member (not shown), a shift ring 122 externally attached to the shift key 121 so as not to move relative to the axial direction, and a shifter 123 engaged with the shift ring 122. The shifter 123 is supported by a shifter support shaft 124 disposed in parallel with the drive shaft 100 so as not to move in the axial direction. The shifter support shaft 124 is operatively connected to a shift operation member (not shown) that can be manually operated.
The shift key 121 has an engaging portion 121a that can engage with the gear-side key groove 110a of the drive-side gear 110. Then, by moving the shift key 121 in the axial direction through the shifter 123 and the shift ring 122, the engagement portion 121 a is one of the plurality of drive side gears 110 by the urging force of the urging member. It selectively engages with a gear-side keyway 110a in one drive-side gear 110. As a result, the one drive side gear 110 becomes incapable of rotating relative to the drive shaft 100. That is, the rotational power input to the drive shaft 100 through the planting input shaft 75 is transmitted to the one drive side gear 110, and the one drive side gear 110 and the driven side gear 112 meshed therewith. Rotational power is transmitted to the first output shaft 101 in a state where the rotational speed is changed according to the gear ratio.

  According to the above configuration, the plurality of drive-side gears 110 supported so as to be relatively rotatable on the drive shaft 100 and the plurality of driven-side gears 112 supported so as not to be relatively rotatable on the first output shaft 101 are engaged with each other. Thus, by selectively supporting any one drive side gear 110 on the drive shaft 100 through the switching mechanism 120 so as not to be relatively rotatable, the rotational power transmitted to the drive shaft 100 through the planting input shaft 75 is changed. And transmitted to the first output shaft 101. Then, portions of the first output shaft 101 extending from the planting drive case 61 to the outer side in the body width direction on the one side and the outer side on the other side output rotational power for reciprocating the seedling mounting table 16, respectively. It acts as a transverse feed shaft 87 and a longitudinal feed shaft 88 that outputs rotational power for driving the longitudinal feed belt mechanism.

  In addition, a planting drive side gear 111 is supported on the drive shaft 100 so as not to be relatively rotatable, and a planting driven side rotating body 113 is supported on the second output shaft 102 so as not to be relatively rotatable. The rotational power of the drive shaft 100 is transmitted to a planting counter rotator 115 supported by the first output shaft 101 through a planting drive side gear 111 and a planting counter gear 114 so as to be relatively rotatable. Further, the rotational power of the planting counter rotating body 115 is transmitted to the planting driven side rotating body 113 via the endless transmission member 116 to rotate the second output shaft 102. The planting drive side gear 111 and the planted driven side rotating body 113 are operatively connected, whereby the rotational power of the drive shaft 100 is transmitted to the second output shaft 102. The second output shaft 102 acts as a planting drive shaft 78 that outputs rotational power for driving the planting unit 210.

  Thus, the planting drive case 61 that supports the planting input shaft 75 that inputs rotational power from the PTO shaft 1a of the traveling machine body 1 is operatively connected to the planting input shaft 75 along the width direction of the vehicle body. The drive shaft 100 is supported and the first output shaft 101 and the second output shaft 102 are supported along the body width direction while being operatively connected to the drive shaft 100, and the drive shaft 100 and the first output shaft are supported. A lateral feed speed change mechanism is supported by one output shaft 101, and portions of the first output shaft 101 extending from the planting drive case 61 to the outer side in the body width direction and the outer side in the lateral direction are respectively fed to the lateral feed shaft 87. Further, since the second output shaft 102 is used as the planting drive shaft 78, the transmission for transmitting the rotational power from the planting input shaft 75 to the seedling stage 16 and the vertical feed belt mechanism. Route, Each time, it is possible to simplify the power transmission path for transmitting rotational power from the planting input shaft 75 to the planting unit 210. Accordingly, it is possible to reduce the size and cost of the planting work device 15 as a whole.

In addition, since one side and the other side of the first output shaft 101 in the body width direction are used as the transverse feed shaft 87 and the longitudinal feed shaft 88, respectively, the conventional configuration in which the transverse feed shaft 87 and the longitudinal feed shaft 88 are arranged in parallel. The number of parts such as transmission gears and bearings can be reduced as compared with the above, and therefore the planting drive case 61 can be reduced in size and cost.
Further, the first output shaft 101 is also used as a counter shaft inserted in the power transmission path from the drive shaft 100 to the second output shaft 102, thereby reducing the cost by reducing the number of parts and reducing the size of the planting drive case 61. Can be achieved.
Further, by connecting the first shaft 101 forming the lateral feed shaft 87 and the second shaft 102 forming the vertical feed shaft 88 so as not to rotate relative to each other, the lateral feed shaft 87 and the vertical feed shaft 88 are separately provided. It becomes possible to connect after forming, and an increase in manufacturing cost can be prevented.

  As mentioned above, although the planting work apparatus in one Embodiment of this invention was demonstrated, this invention is not limited to the said embodiment, A various improvement, change, and correction are possible in the range which does not deviate from the meaning. .

FIG. 1 is a side view of a rice transplanter to which a planting apparatus according to the present embodiment is applied. FIG. 2 is a plan view of a rice transplanter to which the planting apparatus according to the present embodiment is applied. FIG. 3 is a front perspective view of the planting work device of the present embodiment. FIG. 4 is a partial right side view of the planting work device of the present embodiment. FIG. 5 is a top view of the planting frame of the present embodiment. FIG. 6 is a perspective view of the planting frame of the present embodiment. FIG. 7 is an internal plan view of the vicinity of the planting drive case of the present embodiment. FIG. 8 is an internal perspective view of the vicinity of the planting drive case of the present embodiment. FIG. 9 is a transmission mechanism diagram of the planting work device according to the present embodiment. FIG. 10 is a partial perspective view in the vicinity of the switching mechanism of the lateral feed transmission mechanism in the present embodiment. FIG. 11 is a side view of a planting horizontal frame for explaining another example of the operation wire storage in the planting horizontal frame of the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 1a PTO shaft 16 Seedling stage 20 Planting frame 61 Planting drive case 75 Planting input shaft 78 Planting drive shaft 87 Horizontal feed shaft 88 Vertical feed shaft 91 Push cam (vertical feed belt mechanism)
100 drive shaft 101 first output shaft 102 second output shaft 110 drive side gears (transverse feed speed change mechanism)
111 Planting drive side gear 112 Multiple driven side gears (transverse feed speed change mechanism)
113 Planted driven side rotating body 114 Planted counter gear 115 Planted counter rotating body 116 Endless transmission member 210 Planting unit

Claims (3)

A planting frame that is detachably connected to the rear of the traveling machine body, a seedling stage supported by the planting frame so as to be capable of reciprocating along the machine body width direction, and a seedling placed on the seedling stage A longitudinal feed belt mechanism for longitudinal feeding, a planting unit for planting seedlings placed on the seedling platform, a lateral feed speed change mechanism for shifting the reciprocating speed of the seedling platform, A planting input shaft that is operatively connected to the PTO shaft of the traveling machine body, and a planting drive case that supports the planting input shaft and accommodates the lateral feed transmission mechanism;
The planting drive case is supported by the planting frame so that the planting input shaft is along the longitudinal direction of the aircraft,
The planting drive case supports a drive shaft along the width direction of the machine body in a state of being operatively connected to the planting input shaft, and first and second output shafts arranged in parallel to the drive shaft. And
A plurality of drive-side gears in the lateral feed transmission mechanism are supported on the drive shaft so as to be relatively rotatable, and a planting drive-side gear is supported so as not to be relatively rotatable.
A plurality of driven gears in the lateral feed speed change mechanism are supported by the first output shaft so as not to rotate relative to each other in a state of being engaged with the plurality of driving gears,
On the second output shaft, a planted driven rotating body operatively connected to the planting drive side gear is supported so as not to be relatively rotatable,
A portion of the first output shaft that extends from the planting drive case to the outer side in the body width direction and the outer side on the other side outputs a rotational power for reciprocating the seedling platform, respectively. And acting as a longitudinal feed shaft that outputs rotational power for driving the longitudinal feed belt mechanism,
The planting work device, wherein the second output shaft acts as a planting drive shaft that outputs rotational power for driving the planting unit. A planting counter rotator including a planting counter gear meshed with the planting side drive gear is supported on the first output shaft so as to be relatively rotatable.
The said planting driven side rotary body is connected with the said planting counter rotary body via an endless transmission member, The planting work apparatus of Claim 1 characterized by the above-mentioned. The first output shaft has a first shaft and a second shaft that are connected coaxially so as not to rotate relative to each other about the axis,
The planting work device according to claim 1 or 2, wherein the first shaft and the second shaft form the lateral feed shaft and the vertical feed shaft.

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