JP2015204786A - Seedling planting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange rollers and seedling taking-out amount change parts properly when the rollers are provided in a support member, and a seedling placing base is driven to be fed in a reciprocating and transverse manner in a left and right direction along the support member (the rollers).SOLUTION: A support member 24 is provided in a left and right direction over a plurality of planting transmission cases 8, and rollers (support units 40) for supporting the lower part of a seedling placing base 12 are provided in the support member 24. Seedling taking-out amount change parts 28a for changing an amount of seedlings taken out by planting arms 10 by changing the position of the support member 24 vertically are provided. The seedling taking-out amount change part 28a is arranged on one lateral side part among the left and right sides of the planting transmission case 8, and the roller (the support unit 40) is arranged on the other lateral side part among the left and right sides of the planting transmission case 8.

Description

  The present invention relates to a support structure for a seedling platform that is driven by reciprocating lateral feed in the left-right direction in a seedling planting apparatus equipped in a riding type rice transplanter or a walking type rice transplanter.

Regarding the seedling planting device, in Patent Document 1, a support member (30 in FIGS. 5 and 15 in Patent Document 1) is provided with a roller (32 in FIGS. 5 and 15 in Patent Document 1) arranged in the left-right direction. The lower part of the seedling platform is supported by a roller, and the seedling platform is configured to be driven back and forth in the left-right direction along a support member (roller).
As a result, the planting arm passes through the seedling outlet of the support member to take out the seedling and plant it on the rice field as the seedling platform is driven to reciprocate laterally.

Regarding the seedling planting device, in Patent Document 2, the lower part of the seedling stand (8 in FIG. 6 of Patent Document 2) is supported by the support member (52 in FIG. 6 of Patent Document 2) arranged in the left-right direction. As the seedling platform is driven to reciprocally move laterally along the support member, the planting arm passes the seedling outlet of the support member to take out the seedling and plant it on the rice field.
In Patent Document 2, guide portions (57 and 58 in FIG. 6 of Patent Document 2) for guiding the support member so that the position of the support member can be freely changed are arranged at a plurality of locations along the longitudinal direction of the support member. A seedling removal amount changing unit (62 in FIG. 6 of Patent Document 1) that supports the member and changes the position of the supporting member up and down along the guide unit is disposed in the vicinity of each of the guide units.
Thereby, the vertical width at which the planting arm passes the seedling extraction port of the support member is changed by changing the position of the support member (seedling table) up and down along the guide portion by the seedling extraction amount changing unit. The planting arm is configured to change the amount of seedlings taken out.

Regarding the seedling planting device, in Patent Document 1, the first roller (FIGS. 13 and 15 in Patent Document 1) is attached to a fixing portion (30 in FIG. 5 and FIG. 15 in Patent Document 1) of the seedling planting device arranged in the left-right direction. 15 of No. 15) and a second roller (FIG. 13 of Patent Document 1 and 72 of FIG. 15), and the first rail (29a (33) of FIG. 13 of FIG. And the second rail (29b in FIG. 13 and FIG. 15 of Patent Document 1).
As a result, the first roller and the first rail are brought into contact with each other, and the second roller and the second rail are brought into contact with each other to support the seedling platform. The seedling platform is reciprocated horizontally in the left-right direction by the first and second rollers. Driven.
In this case, the first rail is configured to have a U-shaped cross section, and the first roller enters the first rail, and the first roller and the first rail cross the vertical feeding direction of the seedling. The backlash of the seedling stand is suppressed.

Regarding the seedling planting device, in Patent Document 1, a fixing portion (30 in FIG. 5 and FIG. 15 in Patent Document 1) and a support roller (FIGS. 13 and 15 in Patent Document 1) are arranged in a seedling planting device arranged in the left-right direction. 32) and a holding roller (70 in FIG. 13 and FIG. 15 of Patent Document 1), and a support rail (29a (33) in FIG. 13 and FIG. 15 in Patent Document 1) and a holding rail at the bottom of the seedling table (FIG. 13 of Patent Document 1 and 29a (33) of FIG. 15).
As a result, the support roller and the support rail are brought into contact with each other to support the seedling platform, and the seedling platform is reciprocally driven in the lateral direction by the support roller. When the seedling platform is about to float up due to vibration or the like, the seedling platform can be prevented from rising due to the contact between the control roller and the control rail.

Regarding the seedling planting device, in Patent Document 1, a roller (32 in FIG. 5 and FIG. 15 in Patent Document 1) is provided, and a rail (FIG. 13 in Patent Document 1) provided on the back surface of the seedling platform in the left-right direction. And 29a (33) in FIG. 15 is placed on a roller, the lower part of the seedling table is supported by the roller, and the seedling table is configured to be reciprocally laterally driven in the horizontal direction by the roller. .
Thus, as the seedling platform is driven to reciprocate laterally, the planting arm passes through the seedling extraction port of the support member to extract the seedling and plant it on the rice field.

JP2013-208082A JP 2002-84839 A

In the seedling planting device, since the planting arm is rotationally driven with a constant trajectory, the planting arm passes through the seedling extraction port of the support member by changing the position of the support member (seedling platform) up and down. It has a seedling removal amount changing section that changes the vertical width and changes the amount of seedlings taken out by the planting arm (if the position of the support member (seedling platform) is changed upward, If the amount is reduced and the position of the support member (seedling platform) is changed downward, the amount of seedling taken out by the planting arm increases (see Patent Document 2).
In the present invention, when the support member is provided with a roller and the seedling platform is configured to be driven to reciprocate laterally in the horizontal direction along the support member (roller), the roller and the seedling removal amount changing unit are appropriately disposed. The purpose is to be able to.
In the present invention, when the support member is provided with a roller and the seedling platform is configured to be reciprocally laterally driven in the left-right direction along the support member (roller), the weight of the seedling platform is determined by the seedling removal amount changing unit. It is intended to be configured to be properly supported.

In patent document 2, the guide part and the seedling removal amount change part are arrange | positioned in multiple places along the longitudinal direction of a support member, and the weight of a support member (seedling stand) is supported by the seedling removal amount change part. .
In this case, since the support member has a lateral width (length) larger than the lateral width of the seedling bed, the support member is in a state of protruding laterally outward from the guide portion located on the outermost lateral side, There is a demand for improvement in terms of reinforcement.
An object of the present invention is to appropriately reinforce a support member that supports a lower portion of a seedling platform so as to be driven in a reciprocating lateral feed in the left-right direction.

In Patent Document 1, in a state where the first roller enters the first rail, the lateral portion of the first roller on the seedling platform side is the rear wall portion of the first rail (first intersecting with the vertical feeding direction of the seedling in a side view). In the flat part of the rail, it is in a state of contacting the rear wall part extending in the vertical direction from the end of the flat part of the first rail on the seedling stage side, and the seedling placed on the seedling stage Due to the weight, the lateral portion of the first roller on the seedling platform side and the rear wall portion of the first rail are pressed against each other.
As a result, the lateral portion of the first roller on the seedling platform side and the rear wall portion of the first rail are easily worn as the seedling platform is driven to reciprocate in the horizontal direction. There is room for improvement.
An object of the present invention is to suppress wear of the first roller and the first rail when the seedling base is configured to be reciprocated and laterally driven in the left-right direction by the first and second rollers. .

In Patent Document 1, since the suppression roller and the suppression rail are always in contact with each other, the suppression roller has a smaller diameter than the support roller, and thus the seedling platform is driven to reciprocate in the horizontal direction. Thus, the holding roller and the holding rail are easily worn.
The present invention is configured to suppress wear of the control roller and the control rail when the seedling support table is configured to be reciprocally laterally driven by the support roller in the lateral direction and the lifting roller of the seedling control table can be suppressed by the control roller. The purpose is that.

In Patent Literature 1, the lower side, front and rear sides, right and left lateral sides of the roller are covered with a case (see FIGS. 14 and 15 67, 68, and 69 in Patent Literature 1). Thereby, although it becomes a preferable structure in terms of protection of a roller, it is in the state where mud etc. are easy to accumulate in the case which covers a roller.
An object of the present invention is to provide a support member with a roller so that mud or the like is unlikely to accumulate in the vicinity of the roller when the seedling platform is configured to be driven back and forth in the horizontal direction by the roller. Yes.

[I]
(Constitution)
The first feature of the present invention is that the seedling planting apparatus is configured as follows.
A plurality of planting transmission cases with planting arms at the rear are provided at predetermined intervals in the left-right direction, and a support member is provided in the left-right direction across the plurality of planting transmission cases,
A roller that supports the lower portion of the seedling platform so that the seedling platform is reciprocally laterally driven in the left-right direction along the support member.
The planting arm is configured to pass through a seedling outlet formed in the support member while being rotationally driven along a predetermined locus, and to take out the seedling and plant it on the rice field,
By supporting the support member and changing the position of the support member up and down, the position where the planting arm passes through the seedling extraction port is changed up and down, and the amount of seedling that the planting arm takes out is changed. With a seedling takeout amount changing section to change,
The seedling removal amount changing portion is arranged on one of the left and right lateral sides of the planting transmission case, and the roller is arranged on the other lateral side of the planting transmission case.

(Operation and effect of the invention)
According to the first feature of the present invention, in the seedling planting device provided with a plurality of planting transmission cases having planting arms at the rear part at predetermined intervals in the left-right direction, the seedling removal amount changing unit is used as the planting transmission case. By arranging them on the lateral side of one of the left and right sides, the seedling removal amount changing unit is arranged at a predetermined interval in the left-right direction, and the support member can be appropriately supported in the left-right direction. Therefore, the amount of seedlings taken out by the planting arm can be changed appropriately by changing the position of the support member up and down by the seedling removal amount changing unit.

According to the first feature of the present invention, when the roller is provided on the support member in the above-described configuration, the roller is disposed on the other lateral side of the right and left of the planting transmission case, so that the roller is spaced at a predetermined interval in the left-right direction. Therefore, the seedling platform can be appropriately reciprocated and laterally driven in the left-right direction along the support member.
Since the roller is relatively large, the roller and the seedling removal amount changing unit interfere with each other by placing the roller on the left and right side of the planting transmission case opposite to the seedling removal amount changing unit. It can arrange | position compactly, without doing.

[II]
(Constitution)
The second feature of the present invention is that the seedling planting apparatus is configured as follows.
A support member disposed in the left-right direction, and a roller for supporting the lower portion of the seedling platform so that the seedling platform is reciprocally laterally driven in the left-right direction along the support member. ,
It comprises a planting arm that takes out a seedling through a seedling outlet formed in the support member while being driven to rotate along a predetermined locus, and plants the seedling on a rice field,
By supporting the support member and changing the position of the support member up and down, the position where the planting arm passes through the seedling extraction port is changed up and down, and the amount of seedling that the planting arm takes out is changed. It is provided with a seedling removal amount changing portion to be changed, and the seedling removal amount changing portion is arranged at a plurality of locations along the longitudinal direction of the support member,
The said roller is arrange | positioned in the vicinity of the said seedling removal amount change part along the longitudinal direction of the said supporting member.

(Operation and effect of the invention)
According to the second feature of the present invention, in the seedling planting apparatus, the support member can be appropriately supported in the left-right direction by disposing the seedling removal amount changing portion at a plurality of locations along the longitudinal direction of the support member. Therefore, the amount of seedlings taken out by the planting arm can be changed appropriately by changing the position of the support member up and down by the seedling removal amount changing unit.

When the roller is provided on the support member in the above-described configuration, the weight of the seedling platform is concentrated on the roller.
According to the second feature of the present invention, since the roller is arranged in the vicinity of the seedling removal amount changing portion along the longitudinal direction of the support member, if the weight of the seedling platform is concentrated on the roller, The weight of the base is applied from the roller (supporting member) to the seedling removal amount changing portion in the vicinity of the roller without waste, and the weight of the seedling setting base is appropriately supported by the seedling removal amount changing portion.

[III]
(Constitution)
The third feature of the present invention is that the seedling planting apparatus is configured as follows.
A support member that is arranged in the left-right direction and supports the lower part of the seedling platform, and a planting arm that takes a seedling through a seedling outlet formed in the support member while being driven to rotate along a predetermined locus, and plantes the seedling on a rice field. And
Guiding portions that guide the support member in a vertically changeable manner are arranged at a plurality of locations along the longitudinal direction of the support member,
By supporting the support member and changing the position of the support member up and down along the guide portion, the position where the planting arm passes through the seedling outlet is changed up and down, and the planting arm Comprising a seedling removal amount changing unit for changing the amount of seedlings to be taken out, and arranging the seedling removal amount changing unit in the vicinity of each of the guide units,
The position of the support member in conjunction with the seedling removal amount changing unit while supporting the support member at a position spaced apart from the guide unit located on the outermost lateral side among the plurality of guide units. The auxiliary support part which changes up and down is provided.

(Operation and effect of the invention)
According to the third aspect of the present invention, in the seedling planting apparatus, the support member is appropriately supported in the left-right direction by arranging the guide portion and the seedling removal amount changing portion at a plurality of locations along the longitudinal direction of the support member. It is possible to change the position of the support member up and down by the seedling removal amount changing unit, and appropriately change the amount of seedlings taken out by the planting arm.

According to the third aspect of the present invention, when the support member is in a state of coming out from the laterally outer side from the guide part located on the outermost lateral side in the above configuration, the support coming out from the laterally outer side from the guide part located on the outermost lateral side. The part of the member is supported by the auxiliary support part, and the support member is reinforced by the auxiliary support part.
Since the auxiliary support portion is configured to change the position of the support member up and down in conjunction with the seedling removal amount changing portion while supporting the support member, the position of the support member is changed by the seedling removal amount changing portion as described above. When the height is changed up and down, the amount of seedlings taken out by the planting arm can be appropriately changed by the seedling removal amount changing section and the auxiliary support section.

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the seedling planting device of the third feature of the present invention.
A plurality of planting transmission cases provided with the planting arms at the rear are provided at predetermined intervals in the left-right direction, and the support members are provided in the left-right direction across the plurality of planting transmission cases,
The guide portion and the seedling removal amount changing portion are arranged on the left and right side portions of the planting transmission case, and configured to support the support member,
Among the planting transmission case located on the right or left outermost lateral side, for the planting transmission case where the guide unit and the seedling removal amount changing unit are arranged on the left and right center side of the seedling planting device, The auxiliary support part is arranged on the laterally outer side of the seedling planting device which is the other side.

(Operation and effect of the invention)
In a seedling planting device provided with a plurality of planting transmission cases with planting arms at the rear at predetermined intervals in the left-right direction, when a support member is provided in the left-right direction across the planting transmission case, planting A guide part and a seedling removal amount changing part may be arranged on one of the left and right side parts of the transmission case to support the support member.

According to the above-described configuration, among the planting transmission case located on the right or left outermost lateral side, in the planting transmission case where the guide unit and the seedling removal amount changing unit are arranged on the left and right center side of the seedling planting device, The part of the support member which goes out from the planting transmission case to the lateral outer side (opposite the guide part and the seedling removal amount changing part) becomes long.
According to the 4th characteristic of this invention, since the auxiliary support part is arrange | positioned in the above-mentioned planting transmission case in the lateral outer side (opposite side of a guide part and a seedling taking-out amount change part) which is the other right and left. Even if the part of the support member that goes out from the planting transmission case to the lateral outer side (opposite the guide part and the seedling removal amount changing part) becomes long, this support member part should be supported appropriately by the auxiliary support part. Can do.

[V]
(Constitution)
A fifth feature of the present invention resides in the following configuration in the seedling planting device of the fourth feature of the present invention.
Rollers that support the lower part of the seedling platform are arranged at a plurality of locations along the longitudinal direction of the support member so that the seedling platform is driven to reciprocate laterally in the horizontal direction along the support member. To the support member,
One of a plurality of the rollers is disposed between the guide portion adjacent to the auxiliary support portion, the seedling removal amount changing portion, and the auxiliary support portion.

(Operation and effect of the invention)
In the seedling planting apparatus, rollers are arranged at a plurality of locations along the longitudinal direction of the support member, and the lower part of the seedling support is supported by the support member via the roller, and the seedling support is a support member (roller) Is configured to be driven to reciprocate and laterally feed in the left-right direction (see Patent Document 1).
According to the fifth feature of the present invention, the guide portion and the seedling removal amount changing portion are arranged on the left and right center side of the seedling planting device, and the auxiliary support portion is arranged on the opposite side of the guide portion and the seedling removal amount changing portion. In the attached transmission case, one of the rollers is arranged between the guide part and the seedling removal amount changing part and the auxiliary support part, and the space between the guide part and seedling removal amount changing part and the auxiliary support part is effective. The roller can be arranged in a compact manner.

[VI]
(Constitution)
The sixth feature of the present invention is that the seedling planting apparatus is configured as follows.
A first roller rotatable around an axis in a direction intersecting the vertical feeding direction of the seedling, and a second roller rotatable around an axis in a direction along the vertical feeding direction of the seedling, Prepare for one of the fixed part or the seedling table,
The first and second rails extending in the left-right direction are provided on the other of the fixed part of the seedling planting device or the seedling platform,
A cross-sectional shape of the first rail, a plane portion in a direction intersecting with the vertical feeding direction of the seedling, a rear wall portion extending in the vertical direction from an end portion of the plane portion on the seedling setting side, and the plane Comprising a front wall part extending in the same direction as the rear wall part from the end opposite to the seedling bed of the part,
The first roller is inserted between the front and rear wall portions of the first rail, and the flat portion of the first rail and the first roller are in contact with each other.
The second roller and the second rail come into contact with each other in a direction intersecting with the vertical feeding direction of the seedling, and the lateral portion of the first roller on the seedling platform side and the rear wall portion of the first rail are at a predetermined interval. Set the position of the second roller so that
As the seedling platform is driven to reciprocate in the horizontal direction by the first and second rollers, the planting arm passes through the seedling outlet at the lower part of the seedling platform and takes out the seedlings. It is configured to be planted.

(Operation and effect of the invention)
According to the sixth aspect of the present invention, the first roller enters between the front and rear wall portions of the first rail, the flat portion of the first rail and the first roller come into contact, and the second roller and the second rail Is in contact with the first roller, the first rail, the second roller, and the second rail so that the seedling support is reciprocally driven in the horizontal direction.

According to the sixth aspect of the present invention, the second roller and the second rail contact (support) in the direction intersecting the vertical feeding direction of the seedling in the above-described state, so that the side of the first roller on the seedling support side The portion and the rear wall portion of the first rail are located at a predetermined interval (separated).
Thereby, the state where the lateral portion of the first roller on the seedling platform side and the rear wall portion of the first rail are pressed against each other can be prevented, and the seedling platform is driven to reciprocate in the lateral direction. It is possible to suppress the wear of the lateral portion of the first roller on the seedling platform side of the first roller, and to suppress the wear of the rear wall portion of the first rail due to the seedling platform being driven by reciprocating lateral feed in the left-right direction. it can.

[VII]
(Constitution)
The seventh feature of the present invention resides in the following configuration in the seedling planting device of the sixth feature of the present invention.
A plate having excellent wear resistance is exchangeably provided in a portion of the flat portion of the first rail where the first roller contacts,
A plate having excellent wear resistance is replaceably provided at a portion of the second rail where the second roller contacts.

(Operation and effect of the invention)
The first and second rollers roll on the first and second rails as the seedling table is reciprocated in the horizontal direction by the first and second rollers. It is conceivable that the portions of the first and second rails in contact with the second roller wear.
According to the seventh feature of the present invention, a plate having excellent wear resistance is exchangeably provided in a portion where the first roller in the flat portion of the first rail contacts, and the second roller in the second rail comes into contact. A plate with excellent wear resistance can be exchanged in the part. Thereby, abrasion of the part of the 1st and 2nd rail which a 1st and 2nd roller contacts can be suppressed, and a plate can be replaced | exchanged as needed.

[VIII]
(Constitution)
The eighth feature of the present invention is that the seedling planting apparatus is configured as follows.
A support roller that is rotatable around an axis in a direction that intersects the vertical feeding direction of the seedling, and a holding roller that is rotatable around an axis in the direction that intersects the vertical feeding direction of the seedling are fixed to a fixed portion of the seedling planting device. Or prepare for one of the seedling stands,
A support rail and a restraining rail that extend in the left-right direction are provided on the other of the fixed part of the seedling planting device or the seedling bed,
Contact the support roller and the support rail from the direction along the vertical feed direction of the seedling,
Set the position of the support and suppression roller so that the suppression roller and the suppression rail are located at a predetermined interval in the direction along the vertical feed direction of the seedling,
As the seedling platform is driven to reciprocally move laterally by the support roller in the left-right direction, the planting arm passes through the seedling outlet at the bottom of the seedling platform and takes out the seedling so as to be planted on the rice field. It is composed.

(Operation and effect of the invention)
According to the eighth aspect of the present invention, the seedling platform is supported by the support roller and the support rail so as to be reciprocally driven in the horizontal direction by the support roller and the support rail when the support roller and the support rail are in contact with each other. In this state, the pressing roller and the pressing rail are positioned (separated) at a predetermined interval in a direction along the seedling setting surface of the seedling setting table in a side view.
As a result, it is possible to suppress wear of the restraining roller and the restraining rail due to the seedling table being driven in a reciprocating lateral feed in the left-right direction, and when the seedling platform is about to float up due to vibration or the like, the restraining roller and The lifting of the seedling table is suppressed by the contact of the holding rail.

[IX]
(Constitution)
A ninth feature of the present invention resides in the following configuration in the seedling planting device of the eighth feature of the present invention.
The support and restraining rollers are arranged up and down,
The supporting and holding rails are integrally formed and provided between the supporting and holding rollers.

(Operation and effect of the invention)
According to the ninth aspect of the present invention, in a state where the support roller and the support rail (restraining rail) are in contact, the seedling bed is reciprocally laterally driven in the left-right direction by the support roller and the support rail (restraining rail). It is supported. When the seedling table is about to rise due to vibration, etc., the restraining rail (support rail) comes into contact with the restraining roller from below (by the restraining roller comes into contact with the restraining rail (support rail) from below) The lifting of the seedling table is suppressed. In this case, according to the ninth feature of the present invention, the support and the holding rail are integrally formed, so that the structure can be simplified.

[X]
(Constitution)
The tenth feature of the present invention resides in the following configuration in the seedling planting device of the ninth feature of the present invention.
A plate having excellent wear resistance is replaceably provided at a portion of the support rail where the support roller contacts.

(Operation and effect of the invention)
As the seedling table is driven back and forth in the left-right direction by the support roller, the support roller rolls on the support rail, so the part of the support rail that the support roller contacts may wear out. It is done.
According to the tenth feature of the present invention, since the plate having excellent wear resistance is replaceably provided in the portion of the support rail that comes into contact with the support roller, wear of the portion of the support rail that comes into contact with the support roller is suppressed. The plate can be exchanged as necessary.

[XI]
(Constitution)
The eleventh feature of the present invention resides in the following configuration in the seedling planting apparatus.
It has a support unit with a roller that can rotate around the axis in the direction that intersects the vertical feed direction of the seedling,
Put the rail provided across the left and right direction on the back of the seedling table, on the roller from the upper side in the direction along the vertical feeding direction of the seedling,
As the seedling platform is driven to reciprocate laterally in the horizontal direction along the roller, the planting arm passes the seedling outlet at the bottom of the seedling platform and takes out the seedling to plant it on the rice field. To configure
The support unit is configured to support the roller rotatably along the shaft core, the roller rotatably supported by the support shaft, and the seedling stage side portion of the support shaft. A rear wall portion for supporting, a front wall portion for supporting a portion of the support shaft opposite to the seedling platform, and a connecting portion for connecting the upper portions of the front and rear wall portions;
The lower side of the roller is opened, and the right and left lateral sides of the roller are opened.

(Operation and effect of the invention)
According to the eleventh feature of the present invention, when the seedling platform is supported by the support unit so as to be capable of reciprocating laterally feeding in the left-right direction, the lower side of the support unit (roller) is opened, and the right and left sides of the support unit (roller) Since the part is open, even if mud etc. enters the inside of the support unit, it falls from the lower side, right and left side of the support unit (roller) and falls downward. Is difficult to deposit.

  According to the eleventh feature of the present invention, since the support unit is provided with the front and rear wall portions, it is avoided that other objects come into contact with the rollers of the support unit from the front side and the rear side of the seedling planting device. It is possible to avoid damage to the rollers of the support unit.

It is a whole side view of a riding type rice transplanter. It is a whole top view of a riding type rice transplanter. It is a top view of a seedling planting apparatus. It is a front view of a seedling planting apparatus. It is a left side view of the vicinity of a seedling table. It is a right side view of the vicinity of the seedling table. It is a vertical side view of the vicinity of a support member and a support unit. It is a vertical front view of the vicinity of a support member and a support unit. It is a disassembled perspective view of a support member, a rail, and a support unit. It is a vertical side view of the 1st rail and the vicinity of the 1st roller of a support unit. It is a vertical side view of the vicinity of a supporting member and a holding member. It is a perspective view of a control member. It is a vertical side view of the vicinity of the support member and support unit in 1st another form of implementation of invention. It is a vertical side view of the vicinity of the support member and support unit in 3rd another form of implementation of invention. It is a vertical front view of the vicinity of the support member and support unit in 3rd another form of implementation of invention. It is a disassembled perspective view of the support unit in 3rd another form of implementation of invention.

[1]
As shown in FIGS. 1 and 2, a link mechanism 3 and a hydraulic cylinder 4 that drives the link mechanism 3 to move up and down are provided at the rear of the machine body including the right and left front wheels 1 and the right and left rear wheels 2. In addition, an eight-row planting type seedling planting device 5 is supported at the rear part of the link mechanism 3 to constitute a riding type rice transplanter as an example of a paddy field working machine.

  As shown in FIGS. 1, 2, and 3, the seedling planting device 5 includes a single feed case 6, a support frame 7 connected to the feed case 6 and extending in the left-right direction, and the support frame 7 in the left-right direction. Four planting transmission cases 8 connected at a predetermined interval and extending rearward, a rotation case 9 rotatably supported on the right and left sides of the rear portion of the planting transmission case 8, A pair of planting arms 10 provided at both ends, a grounding float 11 and a seedling base 12 are provided.

  As shown in FIGS. 1 and 3, the power of the engine 13 provided in the front part of the airframe is transmitted to the feed case 6 through the transmission shaft 14, and the power of the feed case 6 is planted through the transmission shaft 15. The rotation case 9 is driven to rotate by being transmitted to the transmission case 8. As a result, as described in [2], which will be described later, as the seedling platform 12 is reciprocally driven in the horizontal direction, the rotary case 9 is rotationally driven, and the seedling platform 12 is moved from the seedling platform 12 to the planting arm 10. Alternately take out the seedlings and plant them on the rice field.

  As shown in FIGS. 1 and 2, a belt-type vertical feed mechanism 16 is provided on each of the eight seedling raising surfaces 12 a of the seedling raising table 12. As described in [2], which will be described later, the vertical feed mechanism 16 is stopped and the seedling is placed so that the seedling support 12 does not fall downward while the seedling support 12 is being reciprocally driven. Supports the seedlings on the table 12. When the seedling platform 12 reaches the stroke end of the reciprocating lateral feed drive, the vertical feed mechanism 16 is rotated by a predetermined angle to feed the seedlings on the seedling platform 12 downward.

[2]
Next, the structure of the reciprocating lateral feed drive of the seedling bed 12 and the drive structure of the vertical feed mechanism 16 will be described.
As shown in FIGS. 3 and 5, the lateral feed shaft 17 extends from the feed case 6 to the left lateral outer side, and the end of the lateral feed shaft 17 is supported by the bracket 18 connected to the support frame 7. In addition, a feed member 19 externally fitted to the lateral feed shaft 17 is connected to the back side of the seedling bed 12. The lateral feed shaft 17 is rotationally driven by the power transmitted to the feed case 6, and the feed member 19 is reciprocated laterally driven along the outer surface of the lateral feed shaft 17, and the seedling bed 12 is moved by the feed member 19. Drives reciprocating lateral feed.

  As shown in FIGS. 3, 4 and 6, one drive shaft 20 is connected to the lower part of the vertical feed mechanism 16, and the input arm 21 is connected to the drive shaft 20 via a one-way clutch (not shown). It is fitted. A vertical feed shaft 22 extends from the feed case 6 to the right laterally outer side, and an intermediate portion and an end portion of the vertical feed shaft 22 are supported by a bracket 23 connected to the support frame 7, and transmitted to the feed case 6. The longitudinal feed shaft 22 is rotationally driven by the motive power. The vertical feed shaft 22 is provided with two arms 22 a, and the input arm 21 is located between the arms 22 a of the vertical feed shaft 22.

With the above structure, as shown in FIGS. 3 and 4, when the seedling platform 12 is driven to reciprocate and laterally feed, the input arm 21 is driven to reciprocate and laterally feed between the arms 22 a of the longitudinal feed shaft 22. During this time, the vertical feed mechanism 16 is stopped.
When the seedling base 12 reaches the stroke end of the reciprocating lateral feed drive, the input arm 21 reaches the position of one arm 22a of the longitudinal feed shaft 22, and the input arm 21 is moved by a predetermined angle by the arm 22a of the longitudinal feed shaft 22. It is rotated and returns to its original position. As a result, the vertical feed mechanism 16 is rotationally driven by a predetermined angle via the input arm 21 and the drive shaft 20 to feed the seedlings on the seedling setting table 12 downward.

[3]
Next, the support member 24 (corresponding to the fixed portion of the seedling planting device 5) that supports the lower portion of the seedling raising base 12 will be described.
As shown in FIGS. 2, 3, and 4, the support member 24 has a length larger than the entire width of the seedling platform 12, and is disposed in the left-right direction across the four planting transmission cases 8. As shown in FIGS. 4 and 6, a guide member 25 (corresponding to a guide portion) configured by bending a plate material in a U-shape is obliquely disposed on the right side portion (lateral side surface) of the planting transmission case 8. It is connected to.

  As shown in FIGS. 4 and 6, a guide rod 26 (corresponding to a guide portion) is connected to a portion of the support member 24 above the guide member 25 by a pop nut (not shown), and extends obliquely rearward and downward. An engaging member 27 formed by bending a plate material into a U-shape is connected to a portion of the support member 24 above the guide member 25. A guide rod 26 is inserted into the upper and lower openings of the guide member 25, and the support member 24 is supported along the guide member 25 so that its position can be changed in the vertical direction.

  As shown in FIGS. 3, 5, and 6, a bearing portion 8 a is formed on the upper part of the four planting transmission cases 8, and one operation shaft 28 is formed on the bearing unit 8 a of the four planting transmission cases 8. An operating arm 28a (corresponding to a seedling removal amount changing unit) is connected to a portion of the operating shaft 28 corresponding to the engaging member 27, and the operating arm 28a of the operating shaft 28 is engaged. The member 27 is inserted.

As shown in FIG. 3, a seedling removal amount changing lever 29 is connected to the intermediate portion of the operation shaft 28 and extends obliquely forward and upward, and a seedling removal amount changing lever is connected to the lever guide 30 connected to the support frame 7. 29 is inserted.
By engaging and fixing the seedling removal amount changing lever 29 to the lever guide 30, the posture of the operation arm 28 a of the operation shaft 28 is fixed, and the support member 24 (the seedling table 12) is operated by the operation arm of the operation shaft 28. 28a is supported. By changing the fixed position of the seedling removal amount changing lever 29 along the lever guide 30, the posture of the operation arm 28 a of the operation shaft 28 is changed up and down, and accordingly, the support member 24 (seeding bed 12) of the support member 24 is changed. The position is changed up and down.

  As shown in FIGS. 3, 5, and 6, the planting arm 10 is driven to rotate along a predetermined locus, and the planting arm 10 passes through the notch-shaped seedling extraction port 24 a formed in the support member 24. The planting arm 10 takes out the seedling from the seedling taking-out port 24a of the support member 24 and plantes it on the rice field.

  As shown in FIGS. 3, 5, and 6, when the position of the support member 24 (the seedling table 12) is changed upward by the seedling removal amount changing lever 29, the planting arm 10 opens the seedling removal port 24 a of the support member 24. The vertical width that passes is reduced, and the amount of seedlings taken out by the planting arm 10 is reduced. When the position of the support member 24 (the seedling table 12) is changed downward, the vertical width of the planting arm 10 passing through the seedling outlet 24a of the support member 24 increases, and the amount of seedling that the planting arm 10 takes out is large. Become.

As shown in FIGS. 3, 4, and 5, the support unit 40 is connected to the support member 24 so as to be positioned on the left lateral side portion of the planting transmission case 8, and the support unit 40 operates the operation shaft 28. It is located in the vicinity of the arm 28a. As shown in FIGS. 7, 8, and 9, the support unit 40 is provided with a first roller 31 (corresponding to a roller) and a second roller 32 (corresponding to a roller), and a rail 38 is arranged in the left-right direction below the seedling bed 12. The rails 38 of the seedling base 12 are supported by the first and second rollers 31 and 32.
(The seedling removal amount changing portion (the operation arm 28a of the operation shaft 28) is disposed on the left and right side portions of the planting transmission case 8, and the rollers (first and second rollers 31, 32) are disposed in the planting transmission case 8. Equivalent to the state of being arranged on the other side of the left and right).
(Equivalent to the state in which the rollers (first and second rollers 31 and 32) are arranged in the vicinity of the seedling removal amount changing portion (the operation arm 28a of the operation shaft 28) along the longitudinal direction of the support member 24).

Accordingly, the support unit 40 is positioned below the vertical feed mechanism 16 along the seedling setting surface 12 a of the seedling setting table 12, and the seedling setting table 12 is moved by the first and second rollers 31 and 32 and the rail 38. A reciprocating lateral feed drive is performed along the support member 24.
In this case, in the longitudinal direction of the support member 24, even if the seedling platform 12 is positioned at the left stroke end, the right outermost support unit 40 does not come off the seedling platform 12 to the right side. Even if the seedling platform 12 is positioned at the right stroke end, the left outermost support unit 40 is not detached from the seedling platform 12 to the left side.

As shown in FIG. 7 and FIG. 9, a plate 39 having excellent wear resistance, such as stainless steel, is provided between the seedling outlet 24 a and the seedling outlet 24 a in the support member 24 by screws 50. A plurality are attached along the direction.
As a result, when the seedling table 12 is driven to reciprocate laterally feed along the support member 24, the plate 39 prevents wear of the support member 24 even if the seedling is driven to reciprocate laterally feed in a state where it is in contact with the support member 24. Thus, when the plate 39 is worn, the screw 50 can be removed and the plate 39 can be replaced.

[4]
Next, the support structure on the left end side of the support member 24 (the seedling table 12) will be described.
As shown in FIGS. 3 and 4, in the planting transmission case 8 located on the left outermost side, the guide member 25, the guide rod 26, and the operation arm 28 a of the operation shaft 28 are located on the left and right center sides of the seedling planting device 5. (Right side)

  As shown in FIGS. 3 and 4, the left end portion of the operation shaft 28 extends to the left lateral outer side to form an extension portion 28 b, and the operation arm 28 is formed on the extension portion 28 b of the operation shaft 28. An auxiliary arm 28 c (corresponding to an auxiliary support portion) having the same shape as that of 28 a is connected, and the auxiliary arm 28 c is applied to the lower surface of the support member 24.

  As shown in FIGS. 3, 5 and 6 (see [3] in the previous section), the posture of the operation arm 28a of the operation shaft 28 is fixed by engaging the seedling removal amount changing lever 29 with the lever guide 30 and fixing it. Therefore, the posture of the auxiliary arm 28c of the operation shaft 28 is also fixed. As a result, the support member 24 (the seedling table 12) is supported by the operation arm 28a of the operation shaft 28, and the left end side of the support member 24 (the seedling table 12) becomes the auxiliary arm 28c of the operation shaft 28. Supported.

As shown in FIGS. 3, 5 and 6 (see [3] in the previous section), by changing the fixed position of the seedling removal amount changing lever 29 along the lever guide 30, the operating arm 28a and auxiliary arm 28c of the operating shaft 28 are changed. , And the position of the support member 24 (the seedling bed 12) is changed vertically.
(The support member 24 is supported at a position at a predetermined interval on the laterally outer side of the guide part (guide member 25 and guide rod 26) located on the outermost lateral side of the plurality of guide parts (guide member 25 and guide rod 26). On the other hand, this corresponds to a state in which an auxiliary support portion (auxiliary arm 28c of the operation shaft 28) is provided to change the position of the support member up and down in conjunction with the seedling removal amount changing portion (the operation arm 28a of the operation shaft 28).

  As shown in FIGS. 3 and 4, the support unit 40 is connected to the support member 24 so as to be positioned on the left lateral side in the planting transmission case 8 positioned on the left outermost side, and the operation shaft A support unit 40 is disposed between the 28 auxiliary arms 28 c and the adjacent guide member 25 and guide rod 26 and the operation arm 28 a of the operation shaft 28.

[5]
Next, the support unit 40 will be described.
As shown in FIGS. 7, 8, and 9, a flat front wall portion 33, a rear wall portion 34, and an upper wall portion 35 are provided, and right and left bent portions 33 a (connecting portions) of the upper portion of the front wall portion 33 are provided. And the right and left bent portions 34a (corresponding to the connecting portion) at the upper portion of the rear wall portion 34, the right and left bent portions 35a at the lower portion of the upper wall portion 35, and the front wall portion 33 and The bent portions 33a, 34a and 35a of the rear wall portion 34 and the upper wall portion 35 are overlapped and connected.

  As shown in FIGS. 7, 8, and 9, the support shaft 36 is coupled across the front and rear wall portions 33 and 34, and the first shaft core P <b> 1 around the support shaft 36 (direction intersecting the vertical feed direction A <b> 1 of the seedlings). The first roller 31 is supported on the front wall 33, the rear wall 34, and the bent portions 33a, 34a, 35a of the upper wall 35 from the first roller 31 to the first roller 31). 31 protrudes upward.

As shown in FIGS. 7, 8, and 9, in the support unit 40, since the members are not provided on the lower side, the right side and the left side of the first roller 31, the lower side of the first roller 31 is opened, and the first The right and left lateral sides of the roller 31 are open.
As shown in FIG. 7, the vertical feeding direction A <b> 1 of the seedling is a diagonally downward direction along the seedling setting surface 12 a of the seedling setting base 12 in a side view.

  As shown in FIGS. 7, 8, and 9, the bracket 37 is coupled to the upper bent portion 35 b of the upper wall portion 35, and the second axis P <b> 2 of the bracket 37 (the axis in the direction along the vertical feeding direction A <b> 1 of the seedlings) The second roller 32 is supported so as to be freely rotatable around (corresponding to the core). As shown in FIG. 7, the second roller 32 is positioned above the first roller 31 in a side view, and the first and second shaft cores P <b> 1 and P <b> 2 are orthogonal to each other in a side view.

As shown in FIGS. 3, 7, 8, and 9, an opening 24 b is formed in the support member 24 at the position of the left lateral side of the planting transmission case 8, and pops to the right and left of the opening 24 b. A nut 51 is attached.
Thus, the support unit 40 is disposed on the lower surface of the support member 24 so that the second roller 32 is positioned above the support member 24 and the first roller 31 enters the opening 24b of the support member 24. The support unit 40 is connected to the support member 24 by connecting the bent portions 33a, 34a, and 35a of the wall portion 33, the rear wall portion 34, and the upper wall portion 35 to the pop nut 51 of the support member 24 with bolts 52. .

[6]
Next, the rail 38 will be described.
As shown in FIGS. 7, 8, and 9, the rail 38 includes a first rail 41, a second rail 42, and a third rail 43, and is formed in a U-shaped cross section. It is connected over the direction.

As shown in FIGS. 7, 9, and 10, the cross-sectional shape of the first rail 41 is a flat surface 41 a in a direction intersecting the vertical feeding direction A <b> 1 of the seedling, and downward from the end of the flat surface 41 a on the seedling platform 12 side. The rear wall 41b extended to the bottom, and the front wall 41c extending downward from the end opposite to the seedling platform 12 of the flat surface 41a in the same downward direction as the rear wall 41b. It is configured in a U shape.
A second rail 42 extends upward from the rear wall portion 41b of the first rail 41, and the second rail 42 is along the seedling longitudinal feed direction A1. A third rail 43 extends rearward from the upper part of the second rail 42, and the third rail 43 is in a direction intersecting with the vertical feeding direction A1 of the seedling.

As shown in FIGS. 7 and 10, the first roller 31 enters between the front and rear wall portions 41 b and 41 c of the first rail 41 from the lower side, and the flat portion 41 a of the first rail 41 and the first roller 31. Are in contact with each other in the direction along the vertical feeding direction A1 of the seedling.
The second roller 32 enters between the flat portion 41a of the first rail 41 and the third rail 43, and the second roller 32 and the second rail 42 come into contact with each other from the direction intersecting the vertical feeding direction A1 of the seedling. Yes.

  With the above structure, the rail 38 of the seedling table 12 is supported by the first and second rollers 31 and 32, and the seedling table 12 is supported by the support member 24, and the first and second rails 41, As the first and second rollers 31 and 32 rotate along 42, the seedling setting table 12 is driven to reciprocate laterally along the support member 24.

  As shown in FIGS. 7 and 10, the first roller 31 is positioned so that the lateral portion of the first roller 31 on the seedling platform 12 side and the rear wall portion 41 b of the first rail 41 are positioned at a predetermined interval B <b> 1. The position of the 2nd roller 32 is set so that the horizontal part on the opposite side to the seedling bed 12 of the roller 31 and the front wall part 41c of the 1st rail 41 may be located in predetermined intervals B2.

As shown in FIGS. 7, 8, 9, and 10, a plate 44 made of stainless steel having excellent wear resistance is attached to a portion of the flat surface portion 41 a of the first rail 41 that contacts the first roller 31. A plurality of screws 53 are attached along the direction. When the plate 44 is worn, the screw 53 can be removed and the plate 44 can be replaced.
A plurality of stainless steel plates 45 having excellent wear resistance are attached to the portion of the second rail 42 where the second rollers 32 come into contact with each other by screws 54 along the longitudinal direction of the support member 24. When the plate 45 is worn, the screw 54 can be removed and the plate 45 can be replaced.

[7]
Next, a structure for suppressing the lifting of the seedling table 12 will be described.
The plates 44 and 45 are not a single long piece over the entire width of the support member 24 but are divided into a plurality of pieces. As shown in FIGS. 3 and 4, in the rail 38, between the adjacent plates 45, the right outermost plate 44, the right lateral portion of the 45, the left outermost plate 44. , 45 is provided with a holding member 46 that suppresses the floating of the seedling table 12 on the left lateral side.

As shown in FIGS. 3 and 4, when the seedling platform 12 is driven to reciprocate laterally, the restraining member 46 moves together with the seedling platform 12.
In this case, the holding member 46 moves between a position close to the operation arm 28 a (auxiliary arm 28 c) of the operation shaft 28 and a position close to the support unit 40, and the holding member 46 operates the operation shaft 28. There is no contact with the arm 28a (auxiliary arm 28c) and the support unit 40.

As shown in FIGS. 11 and 12, the holding member 46 includes a mounting portion 46a in which a nut 46c is internally provided, and a claw portion 46b extending from the mounting portion 46a, and is configured integrally with a synthetic resin. ing.
The mounting portion 46a of the pressing member 46 is inserted between the first, second, and third rails 41, 42, and 43 in the rail 38, and the mounting portion 46a of the pressing member 46 is applied to the second and second rails 42 and 43. Attach the claw portion 46b of the holding member 46 to the lower side of the support member 24, and fasten the bolt 47 from the upper side of the third rail 43 to the nut 46c of the mounting portion 46a of the holding member 46 to fix the holding member 46. .

As shown in FIGS. 11 and 12, when the seedling of the seedling platform 12 is sent downward by the vertical feed mechanism 16 (vertical feeding direction A1 of the seedling), an upward reaction force from the seedling is applied to the seedling platform 12. Even if the seedling table 12 is lifted by hanging, the claw portion 46b of the holding member 46 is engaged with the support member 24, and the raising of the seedling table 12 is suppressed.
When the seedling table 12 is driven to reciprocate laterally, even if the seedling table 12 tries to float up due to vibration or the like, the claw portion 46b of the holding member 46 engages with the support member 24, and the seedling table 12 The lift of the is suppressed.

  In this case, as shown in FIGS. 7 and 11, when the first roller 31 is in contact with the flat portion 41 a (plate 44) of the first rail 41, the upper surface of the claw portion 46 b of the holding member 46 is the support member. The claw portion 46b of the holding member 46 is normally prevented from coming into contact with the support member 24.

[First Alternative Embodiment of the Invention]
In the support unit 40 of the above-mentioned [Mode for Carrying Out the Invention], as shown in FIG. 13, the right and left portions of the front wall portion 33 are provided with bent portions 33b, and the lower portion of the front wall portion 33 is bent portions 33c. The support unit 40 may be configured to close the lower side, the right side, and the left side of the first roller 31.
In this case, not the front wall portion 33 but the right and left portions of the rear wall portion 34, and bent portions (not shown) are provided at the lower portion, and the lower side, the right and left lateral sides of the first roller 31 in the support unit 40. You may comprise so that it may block.

[Second Embodiment of the Invention]
In the support unit 40 and the rail 38 of the above-mentioned [Mode for Carrying Out the Invention] and [First Different Embodiment of the Invention], the support unit 40 is connected to the seedling table 12, and the support rail 38 is connected to the support member 24. You may comprise so that it may connect.
If comprised in this way, in the 1st roller 31 and the 1st rail 41, the 1st roller 31 will be arrange | positioned at the upper side and the plane part 41a of the 1st rail 41 will be arrange | positioned at the lower side. The cross-sectional shape of the first rail 41 includes a flat surface portion 41a in a direction intersecting the vertical feeding direction A1 of the seedling, a rear wall portion 41b extending upward from an end portion of the flat surface portion 41a on the seedling bed 12 side, The portion 41a is formed in an upward U-shape including a front wall portion 41c extending in the same upward direction as the rear wall portion 41b from an end portion on the opposite side to the seedling bed 12.

[Third Another Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] [Second Alternative Embodiment of the Invention], the holding member 46 shown in FIGS. The support unit 40 may be configured as shown below.

As shown in FIGS. 14, 15, and 16, the support unit 40 is similar to the support unit 40 shown in FIGS. 7, 8 and 9, and includes a front wall portion 33 and a rear wall portion 34, an upper wall portion 35, a support shaft 36, A first roller 31 (corresponding to a support roller) is provided, the lower side of the first roller 31 is opened, and the right and left lateral sides of the first roller 31 are opened.
In this case, in the support unit 40 shown in FIGS. 14, 15, and 16 (see FIG. 13) as described above (see FIG. 13), the lower side and the right side of the first roller 31 in the support unit 40. And you may comprise so that the left side may be plugged up.

  As shown in FIGS. 14, 15, and 16, the bracket 37 is connected to the bent portion 35 b of the upper wall portion 35, and the second roller 32 is supported around the second axis P <b> 2 of the bracket 37 so as to freely rotate. . A support shaft 49 is coupled to the upward bent portion 37a of the bracket 37 in parallel with the first axis P1, and a third roller 48 (corresponding to a pressing roller) is freely rotatable around the third axis P3 of the support shaft 49. It is supported by. In this case, the interval between the first roller 31 and the third roller 48 is set to be larger than the vertical width of the flat portion 41 a (plate 44) of the first rail 41.

  As shown in FIGS. 14 and 15, the first roller 31 enters from the lower side between the front and rear wall portions 41 b and 41 c of the first rail 41, and the flat portion 41 a (corresponding to the support rail) of the first rail 41. ) And the first roller 31 are in contact with each other in the direction along the vertical feeding direction A1 of the seedling, and the second roller 32 is between the flat portion 41a of the first rail 41 and the third rail 43. The second roller 32 and the second rail 42 (plate 45) come into contact with each other from the direction intersecting the seedling vertical feeding direction A1.

In the above-described state, the third roller 48 and the upper surface of the flat portion 41a (corresponding to the holding rail) of the first rail 31 are located at a predetermined interval B5, and the lower surface of the third roller 48 and the third rail 43. Are positioned at a predetermined interval B6.
(The support roller (first roller 41) and the support rail (the lower surface (plate 44) of the flat portion 41a of the first rail 41) are brought into contact with each other from the direction along the vertical feeding direction A1 of the seedling, and the control roller (third roller 48) and the holding rail (the upper surface of the flat portion 41a of the first rail 41) are located at a predetermined interval B5 in the direction along the vertical feeding direction A1 of the seedlings).
(Support and restraining rollers (first and third rollers 31, 48) are arranged one above the other, and the support and restraining rail (the flat portion 41a of the first rail 41) is integrally formed to support and restraining rollers (first And equivalent to the state provided between the third rollers 31, 48).

As shown in FIGS. 14 and 15 with the above structure, when the seedling on the seedling base 12 is sent downward (vertical feeding direction A1) by the vertical feed mechanism 16 or when the seedling base 12 is reciprocated horizontally. Even if the seedling table 12 is about to float up due to vibration or the like when it is driven, the upper surface of the flat portion 41a of the first rail 41 hits the third roller 48, so that the seedling table 12 is prevented from being lifted up.
In this case, the third roller 48 and the upper surface of the flat portion 41a of the first rail 41 are positioned at a predetermined interval B5, and the third roller 48 and the lower surface of the third rail 43 are positioned at a predetermined interval B6. Therefore, the third roller 48 does not normally contact the upper surface of the flat portion 41 a of the first rail 41 and the lower surface of the third rail 43.

In the support unit 40 shown in FIGS. 14, 15, and 16, the third roller 48 may be provided below the first roller 31. When configured in this manner, a holding rail (not shown) separate from the flat portion 41a (corresponding to the support rail) of the first rail 41 is provided above the third roller 48 (below the first roller 31). You may prepare for.
In the case where the third roller 48 is provided on the lower side of the first roller 31, the flat portion 41 a of the first rail 41 shown in FIGS. 14, 15, and 16 is disposed between the first and third rollers 31 and 48. It may be arranged so that the first roller 31 is placed on the upper surface of the flat portion 41 a of the first rail 41. In this case, the upper surface of the flat portion 41a of the first rail 41 serves as a support rail, and the lower surface of the flat portion 41a of the first rail 41 serves as a restraining rail.

In the support unit 40 and the rail 38 shown in FIGS. 14, 15, and 16, the support unit 40 may be connected to the seedling bed 12 and the support rail 38 may be connected to the support member 24.
If comprised in this way, it will comprise so that the 1st roller 31 may be located in the upper side in the support unit 40, and the 3rd roller 48 may be located in the lower side, The plane part of the 1st rail 41 connected with the seedling bed 12 41a is disposed between the first and third rollers 41,48. The first roller 31 is placed on the upper surface of the flat portion 41a of the first rail 41 from above, and the upper surface of the flat portion 41a of the first rail 41 and the first roller 31 are in contact with each other in the direction along the vertical feeding direction A1 of the seedling. As a result, the third roller 48 and the lower surface of the flat portion 41a of the first rail 41 are positioned at a predetermined interval B5.

In the support unit 40 shown in FIGS. 14, 15, and 16, the bent portion 37 a of the bracket 37 is configured to be large, and an opening (notch portion) that allows the third roller 48 to pass through the bent portion 37 a of the bracket 37. It may be formed.
With this configuration, as shown in FIGS. 14 and 15, in a state where the support unit 40 is connected to the support member 24 (the seedling table 12), from the opposite side of the seedling table 12 (the left side in FIG. 14). The third roller 48 and the support shaft 49 can be detached from the support unit 40, or a new third roller 48 and the support shaft 49 can be attached to the support unit 40.

[Fourth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Third Another Mode for Carrying Out the Invention], the right end portion of the operating shaft 28 is also extended to the right lateral outer side. The auxiliary arm 28c may be connected to the right extending portion 28b of the operation shaft 28 by providing the right extending portion 28b to be extended.
As described above, instead of connecting the auxiliary arm 28c with the extended portions 28b at the right and left ends of the operating shaft 28, the auxiliary transmission arm 28c is positioned on the right and left outermost sides. 8 may be configured to be supported.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Third Another Mode for Carrying Out the Invention], the operating arm 28a of the operating shaft 28 is placed on the left side of the planting transmission case 8. You may arrange | position to a horizontal side part and may arrange | position the support unit 40 to the right side part of the planting transmission case 8. FIG.
When configured as described above, the right end portion of the operating shaft 28 is provided with a right extending portion 28b that extends right laterally outward, and the auxiliary arm 28c is provided on the right extending portion 28b of the operating shaft 28. Link.

  As a result, the support unit 40 is connected to the support member 24 so as to be positioned on the right lateral side in the planting transmission case 8 positioned on the outermost right side of the right, and the auxiliary arm 28c of the operation shaft 28 The support unit 40 is disposed between the adjacent guide member 25 and guide rod 26 and the operation arm 28 a of the operation shaft 28. In this case, the left end portion of the operating shaft 28 is also provided with a left extending portion 28b extending to the left laterally outer side, and the auxiliary arm 28c is connected to the left extending portion 28b of the operating shaft 28. Good.

  As described above, instead of connecting the auxiliary arm 28c with the extended portions 28b at the right and left ends of the operating shaft 28, the auxiliary transmission arm 28c is positioned on the right and left outermost sides. 8 may be configured to be supported.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Form of the Invention] to [Fifth Different Form of the Invention], the first axial core P1 and the third axial core P3 are arranged in the vertical direction of the seedling. It may be set to a direction that intersects the vertical feeding direction A1 of the seedlings at a slightly smaller angle than 90 degrees instead of the direction that intersects the feeding direction A1 at 90 degrees, and is slightly smaller than the vertical feeding direction A1 of the seedlings and 90 degrees You may set to the direction which cross | intersects at a big angle.
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention] to [Fifth Another Mode for Carrying Out the Invention], the second axis P2 is parallel to the vertical feed direction A1 of the seedling. You may set not the direction but the direction slightly inclined with respect to the vertical feed direction A1 of a seedling.

The present invention is not limited to an eight-row type seedling planting device, but also a six-row planting type (three planting transmission cases), a four-row planting type (two planting transmission cases), a ten-row planting type ( It can also be applied to a seedling planting device of 5 planting transmission cases).
The present invention can be applied not only to a rotary type seedling planting device having a pair of planting arms at both ends of a rotating case, but also to a seedling planting device having a crank type planting arm not having a rotating case. .

DESCRIPTION OF SYMBOLS 8 Planting transmission case 10 Planting arm 12 Seedling stand 24 Support member, fixed part of seedling planting device 24a Seedling takeout port 25, 26 Guide part 28a Seedling takeout amount changing part 28c Auxiliary support part 31 Roller, first roller, Support roller 32 Roller 33 Support unit front wall portion 33a, 34a Support unit connection portion 34 Support unit rear wall portion 36 Support unit support shaft 40 Support unit 41 First rail, rail 41a Plane portion of first rail, support Rail, holding rail 41b rear wall portion of first rail 41c front wall portion of first rail 42 second rail 44 plate 45 plate 48 holding roller A1 seedling vertical feed direction B1 predetermined interval B5 predetermined interval P1 Axial core in the direction of crossing P2 Axial core along the vertical feed direction of the seedling P3 Crossing with the vertical feed direction of the seedling That the direction of the axis

Claims (11)

A plurality of planting transmission cases with planting arms at the rear are provided at predetermined intervals in the left-right direction, and a support member is provided in the left-right direction across the plurality of planting transmission cases,
A roller that supports the lower portion of the seedling platform so that the seedling platform is reciprocally laterally driven in the left-right direction along the support member.
The planting arm is configured to pass through a seedling outlet formed in the support member while being rotationally driven along a predetermined locus, and to take out the seedling and plant it on the rice field,
By supporting the support member and changing the position of the support member up and down, the position where the planting arm passes through the seedling extraction port is changed up and down, and the amount of seedling that the planting arm takes out is changed. With a seedling takeout amount changing section to change,
The seedling planting apparatus in which the seedling removal amount changing unit is arranged on one lateral side of the planting transmission case and the roller is arranged on the other lateral side of the planting transmission case. A support member disposed in the left-right direction, and a roller for supporting the lower portion of the seedling platform so that the seedling platform is reciprocally laterally driven in the left-right direction along the support member. ,
It comprises a planting arm that takes out a seedling through a seedling outlet formed in the support member while being driven to rotate along a predetermined locus, and plants the seedling on a rice field,
By supporting the support member and changing the position of the support member up and down, the position where the planting arm passes through the seedling extraction port is changed up and down, and the amount of seedling that the planting arm takes out is changed. It is provided with a seedling removal amount changing portion to be changed, and the seedling removal amount changing portion is arranged at a plurality of locations along the longitudinal direction of the support member,
The seedling planting apparatus which has arrange | positioned the said roller in the vicinity of the said seedling removal amount change part along the longitudinal direction of the said supporting member. A support member that is arranged in the left-right direction and supports the lower part of the seedling platform, and a planting arm that takes a seedling through a seedling outlet formed in the support member while being driven to rotate along a predetermined locus, and plantes the seedling on a rice field. And
Guiding portions that guide the support member in a vertically changeable manner are arranged at a plurality of locations along the longitudinal direction of the support member,
By supporting the support member and changing the position of the support member up and down along the guide portion, the position where the planting arm passes through the seedling outlet is changed up and down, and the planting arm Comprising a seedling removal amount changing unit for changing the amount of seedlings to be taken out, and arranging the seedling removal amount changing unit in the vicinity of each of the guide units,
The position of the support member in conjunction with the seedling removal amount changing unit while supporting the support member at a position spaced apart from the guide unit located on the outermost lateral side among the plurality of guide units. A seedling planting device having an auxiliary support part that changes the height of the seedling. A plurality of planting transmission cases provided with the planting arms at the rear are provided at predetermined intervals in the left-right direction, and the support members are provided in the left-right direction across the plurality of planting transmission cases,
The guide portion and the seedling removal amount changing portion are arranged on the left and right side portions of the planting transmission case, and configured to support the support member,
Among the planting transmission case located on the right or left outermost lateral side, for the planting transmission case where the guide unit and the seedling removal amount changing unit are arranged on the left and right center side of the seedling planting device, The seedling planting device according to claim 3, wherein the auxiliary support part is arranged on the laterally outer side of the seedling planting device which is the other side. Rollers that support the lower part of the seedling platform are arranged at a plurality of locations along the longitudinal direction of the support member so that the seedling platform is driven to reciprocate laterally in the horizontal direction along the support member. To the support member,
The seedling planting according to claim 4, wherein one of the plurality of rollers is disposed between the guide portion adjacent to the auxiliary support portion, the seedling removal amount changing portion, and the auxiliary support portion. apparatus. A first roller rotatable around an axis in a direction intersecting the vertical feeding direction of the seedling, and a second roller rotatable around an axis in a direction along the vertical feeding direction of the seedling, Prepare for one of the fixed part or the seedling table,
The first and second rails extending in the left-right direction are provided on the other of the fixed part of the seedling planting device or the seedling platform,
A cross-sectional shape of the first rail, a plane portion in a direction intersecting with the vertical feeding direction of the seedling, a rear wall portion extending in the vertical direction from an end portion of the plane portion on the seedling setting side, and the plane Comprising a front wall part extending in the same direction as the rear wall part from the end opposite to the seedling bed of the part,
The first roller is inserted between the front and rear wall portions of the first rail, and the flat portion of the first rail and the first roller are in contact with each other.
The second roller and the second rail come into contact with each other in a direction intersecting with the vertical feeding direction of the seedling, and the lateral portion of the first roller on the seedling platform side and the rear wall portion of the first rail are at a predetermined interval. Set the position of the second roller so that
As the seedling platform is driven to reciprocate in the horizontal direction by the first and second rollers, the planting arm passes through the seedling outlet at the lower part of the seedling platform and takes out the seedlings. Seedling planting device configured to plant. A plate having excellent wear resistance is exchangeably provided in a portion of the flat portion of the first rail where the first roller contacts,
The seedling planting apparatus according to claim 6, wherein a plate having excellent wear resistance is replaceably provided at a portion of the second rail where the second roller comes into contact. A support roller that is rotatable around an axis in a direction that intersects the vertical feeding direction of the seedling, and a holding roller that is rotatable around an axis in the direction that intersects the vertical feeding direction of the seedling are fixed to a fixed portion of the seedling planting device. Or prepare for one of the seedling stands,
A support rail and a restraining rail that extend in the left-right direction are provided on the other of the fixed part of the seedling planting device or the seedling bed,
Contact the support roller and the support rail from the direction along the vertical feed direction of the seedling,
Set the position of the support and suppression roller so that the suppression roller and the suppression rail are located at a predetermined interval in the direction along the vertical feed direction of the seedling,
As the seedling platform is driven to reciprocally move laterally by the support roller in the left-right direction, the planting arm passes through the seedling outlet at the bottom of the seedling platform and takes out the seedling so as to be planted on the rice field. Constructing seedling planting device. The support and restraining rollers are arranged up and down,
The seedling planting device according to claim 8, wherein the supporting and holding rails are integrally formed and provided between the supporting and holding rollers.   The seedling planting apparatus according to claim 9, wherein a plate having excellent wear resistance is replaceably provided at a portion of the support rail where the support roller contacts. It has a support unit with a roller that can rotate around the axis in the direction that intersects the vertical feed direction of the seedling,
Put the rail provided across the left and right direction on the back of the seedling table, on the roller from the upper side in the direction along the vertical feeding direction of the seedling,
As the seedling platform is driven to reciprocate laterally in the horizontal direction along the roller, the planting arm passes the seedling outlet at the bottom of the seedling platform and takes out the seedling to plant it on the rice field. To configure
The support unit is configured to support the roller rotatably along the shaft core, the roller rotatably supported by the support shaft, and the seedling stage side portion of the support shaft. A rear wall portion for supporting, a front wall portion for supporting a portion of the support shaft opposite to the seedling platform, and a connecting portion for connecting the upper portions of the front and rear wall portions;
A seedling planting device in which the lower side of the roller is opened and the right and left lateral sides of the roller are opened.

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