JP2015231342A - Seedling planting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment/detachment of a coupling body to a seedling feeding body in a seedling planting apparatus including the seedling feeding body operated to transfer by a seedling transverse feed shaft, and the coupling body connecting and linking the seedling feeding body and a seedling tray to enable transfer of the seedling tray by the seedling feeding body.SOLUTION: One end side of a coupling body 68 is removably coupled with a coupling seat part 83 provided on a seedling feeding body 62. A feed shaft cover 80 for covering a seedling transverse feed shaft 61 is fitted to cover fixing parts 81 provided at both ends of the seedling feeding body 62. A length L1 of an interval D between the cover fixing part 81 and the coupling seat part 83, in a moving direction of the seedling feeding body is longer than a length L2 of the cover fixing part 81, in the moving direction of the seedling feeding body.

Description

  The present invention relates to a seedling planting apparatus.

Conventionally, for example, there has been a seedling planting device disclosed in Patent Document 1. In this seedling planting apparatus, a body frame is configured by a main frame that is long in the lateral direction of the body and a feed case coupled to the main frame. In the feed case, there is a transmission mechanism that distributes the driving force of the input shaft to the seedling planting mechanism, the seedling horizontal feed device as the seedling table horizontal feed drive mechanism, and the seedling vertical feed device as the seedling vertical feed drive mechanism. Contained.
This seedling planting device includes a seedling platform horizontal feed shaft as a seedling horizontal feed shaft extended from a feed case, and a transport body as a seedling feeder externally fitted to the seedling platform horizontal feed shaft, When the table horizontal feed shaft is rotationally driven, the transfer body is reciprocated by the action of the horizontal feed spiral groove provided on the seedling table horizontal feed shaft and the cross feed cam mechanism comprising the piece provided on the transfer body. It is transferred, and the transfer body is configured to horizontally transfer the seedling stage through a connecting body composed of a connecting rod.

Conventionally, for example, there has been a seedling planting device disclosed in Patent Document 2. In this seedling planting device, a rotating case as a rotating rotor, a planting claw support case as a pair of planting arms rotatably attached to two locations of the rotating case, and a pair of planting claw support cases, respectively A pair of planting claw support cases are provided by connecting rods that are attached to support shafts that are supported so as to be rotatable relative to each other, and are provided with connecting rods that restrict rotation of the respective shafts with respect to the planting arms. It is configured to plant seedlings alternately for one seedling planting strip.
This seedling planting device includes a sliding member as a seedling push rod, a coil spring as a push spring, and a swing operation member as a swing arm that returns the slide member to a non-operation position as a standby position. Yes. When the sliding member is operated to the pushing side by the coil spring, the elastic receiving member receives the swing operation member and positions the sliding member at the operating position as the pushing position.

JP2013-202022A JP 2013-198456 A

The seedling feed body is externally fitted to the seedling horizontal feed shaft extended from the feed case, and the seedling feed shaft is driven to rotate so that the seedling feed body is reciprocated to horizontally transport the seedling platform. In the seedling planting apparatus, the connecting body for interlockingly connecting the seedling feeding body and the seedling mounting base is detachably connected to a connecting seat provided on the seedling feeding body. Further, the support member for supporting the extending end side of the seedling horizontal feed shaft and the cover fastening provided at the other end portion of the seedling feeder over the feed case and the cover fastening portion provided at one end of the seedling feeder. A feed shaft cover that covers the seedling lateral feed shaft is attached to each part.
When the connection seat of the seedling feeder and the cover fixing part are close to each other, the feed shaft cover attached to one end of the seedling feeder and the feed shaft cover attached to the other end of the seedling feeder The working space between the two is narrow, and it is difficult to work because the tool can easily hit the feed shaft cover when detaching the connecting body. In addition, the distance between the feed case and the cover fixing portion of the seedling feeder in the state where the seedling feeder is located in the neutral position, the support member on the extending end side of the seedling horizontal feed shaft, and the cover fixing portion of the seedling feeder In some cases, a long feed shaft cover is required.

  In this kind of seedling planting device, if the connecting body may be connected to the seedling feeding body in the wrong mounting direction, even if the connecting body and the seedling mounting stage can be connected, Misalignment with the seedling platform may occur. For example, even if the seedling feeder is located at the neutral position, the seedling stage may not be located at the original neutral position but may be displaced from the original neutral position to the left or right side.

  The feed case is configured to be split into a feed case main body and a lid case portion in the lateral direction of the machine body. If there is insufficient tightening between the feed case main body and the lid case portion, oil leakage such as the seepage of lubricating oil in the case tends to occur. In particular, when the feed case has an oil bath structure, oil leakage is likely to occur.

  In the seedling planting device in which the seedling extrusion rod is supported by the planting arm so as to be slidable and the seedling extrusion rod is slid to the extrusion position and the planting arm has a built-in extrusion spring, the seedling extrusion rod is planted. Since the inside of the arm is slid to the standby position, it is necessary to allow the air inside the planting arm to escape as the seedling push rod slides.

  In the case of the conventional technique in which the swinging arm is received by the elastic member by receiving the swinging arm with the elastic member, the impact generated by the swinging arm being received by the elastic member is relatively strong, and there is room for improvement.

  A pair of planting arms that are supported on both ends of the rotating roller so as to be individually rotatable, and a connection that is attached to the respective supporting shafts of the pair of planting arms and that regulates the relative posture of the pair of supporting shafts. In the seedling planting device equipped with a cocoon, the support shaft protrudes from the boss part of the planting arm to the outside, so that muddy water and the like enter the planting arm from between the support shaft and the boss part. Need to prevent.

  In the seedling planting apparatus including the feed case connected to the main frame, the feed case is connected to the support member included in the traveling machine body, and therefore it is necessary to prevent the feed case from being damaged due to the load applied to the feed case. . Moreover, when attaching members, such as a lever guide, to a feed case, it is necessary to support it stably.

  The present invention avoids oil leakage in a seedling planting apparatus that can easily remove the coupling body relative to the seedling feeding body, or a seedling planting apparatus that can avoid erroneous coupling of the coupling body to the seedling feeding body, or a feed case. Easy seedling planting device, seedling planting device that can vent the planting arm in an advantageous state, seedling planting device that does not easily cause positioning impact of seedling extrusion rod, or muddy water intrusion in planting arm An object of the present invention is to provide a planting device that can be effectively prevented, or a seedling planting device that can be obtained in a state where the feed case is strong or a member can be firmly supported.

The seedling planting apparatus according to the first invention is
A seedling lateral feed shaft that is extended so as to be rotationally driven from the feed case and whose extended end side is supported so as to be relatively rotatable by the support member;
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is detachably connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to a seedling mounting base, and includes a connecting body that interlocks and connects the seedling feeding body and the seedling mounting base,
A feed shaft cover that covers the seedling lateral feed shaft is attached over the cover fastening portion provided at one end of the seedling feed body and the feed case,
A feed shaft cover that covers the seedling lateral feed shaft is attached across the cover fastening portion provided at the other end of the seedling feed body and the support member,
The length of the gap between the cover fixing part of the one end and the connecting seat in the direction of moving the seedling feeding body, and the seedling feeding of the gap between the cover fixing part of the other end and the connecting seat The length in the moving direction is set to be longer than the length in the seedling feeder moving direction of the cover fastening part,
One end portion and the other end portion of the seedling feeding body are an inner cylinder portion that is fitted around the seedling lateral feed shaft, an outer cylinder portion that is positioned outside the inner cylinder portion and has the cover fixing portion, and the inner cylinder And a gap formed between the outer cylinder and the outer cylinder.

  According to the configuration of the first aspect of the present invention, the length of the distance between the connecting seat portion and the cover fixing portion in the direction of moving the seedling feeder is the cover fixing portion on either the one end side or the other end side of the seedling feeding member. This is longer than the length of the seedling feeder in the moving direction, so a wide working space is provided between the feed shaft cover attached to one end of the seedling feeder and the feed shaft cover attached to the other end of the seedling feeder. It can be secured, and it is easy to work, for example, it is difficult for the tool to hit the feed shaft cover when detaching the connecting body from the connecting seat.

  To make it easier to avoid contact of the feed shaft cover with the seedling lateral feed shaft, if the inner diameter of the feed shaft cover is set to be considerably larger than the outer diameter of the seedling lateral feed shaft, even a feed shaft cover with a larger inner diameter can be attached to the seedling feed body Thus, it is necessary to increase the outer diameter of the cover fastening portion. Even if the outer diameter of the cover fixing part is increased, a gap is formed between the outer cylinder part having the cover fixing part and the inner cylinder part fitted on the seedling feed shaft. Even in the case of casting, it is possible to cast while making it difficult for shrinkage to occur due to the gap as compared to casting without a gap.

  Therefore, according to the first aspect of the present invention, the operation of removing the connecting body and lubricating the seedling feeding body can be performed efficiently because the tool is difficult to touch the feed shaft cover. . Even when the seedling feed body is cast, it is possible to obtain a good finished state in which it is difficult to cause shrinkage, although the inner diameter of the feed shaft cover can be increased to make it difficult to contact the feed shaft cover with the seedling lateral feed shaft.

  According to the first aspect of the present invention, the length of the gap between the connecting seat portion and the cover fastening portion in the seedling feeder moving direction is longer than the length of the cover fastening portion in the seedling feeder moving direction. The total length in the moving direction of the seedling feeder is increased. The seedling horizontal feed shaft originally has a length that allows the seedling feeder to be transported while the seedling feeder's transfer stroke becomes a transfer stroke that does not cause insufficient transfer of the seedling stand even if the total length of the seedling feeder becomes longer If the length of the seedling feeding body in the inner cylinder portion is longer than the length of the outer cylinder portion, the cover fastening portion and the feed case in a state where the seedling feeding body is located in the neutral position And the interval between the cover fastening portion and the support member can be shortened. Therefore, the length of the feed shaft cover can be shortened, and the feed shaft cover can hardly be hung down. That is, it is difficult to generate contact with the seedling horizontal feed shaft due to the feed shaft cover hanging down.

The seedling planting apparatus according to the second invention is
A seedling lateral feed shaft that is extended so as to be rotationally driven from the feed case and whose extended end side is supported so as to be relatively rotatable by the support member;
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is detachably connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to a seedling mounting base, and includes a connecting body that interlocks and connects the seedling feeding body and the seedling mounting base,
A feed shaft cover that covers the seedling lateral feed shaft is attached over the cover fastening portion provided at one end of the seedling feed body and the feed case,
A feed shaft cover that covers the seedling lateral feed shaft is attached across the cover fastening portion provided at the other end of the seedling feed body and the support member,
The length of the gap between the cover fixing part of the one end and the connecting seat in the direction of moving the seedling feeding body, and the seedling feeding of the gap between the cover fixing part of the other end and the connecting seat The length in the moving direction is set to be longer than the length in the moving direction of the seedling feeder of the cover fixing part.

  According to the configuration of the second aspect of the present invention, the length of the distance between the connecting seat portion and the cover fixing portion in the direction of moving the seedling feeder is the cover fixing portion on either one end side or the other end side of the seedling feeding member. This is longer than the length of the seedling feeder in the moving direction, so a wide working space is provided between the feed shaft cover attached to one end of the seedling feeder and the feed shaft cover attached to the other end of the seedling feeder. It can be secured, and it is easy to work, for example, it is difficult for the tool to hit the feed shaft cover when detaching the connecting body from the connecting seat.

  Therefore, according to the second aspect of the present invention, the operation of removing the connecting body and lubricating the seedling feeding body can be performed efficiently because the tool is difficult to touch the feed shaft cover. . Even when the seedling feed body is cast, it is possible to obtain a good finished state in which it is difficult to cause shrinkage, although the inner diameter of the feed shaft cover can be increased to make it difficult to contact the feed shaft cover with the seedling lateral feed shaft.

  Further, according to the second invention, the length of the gap between the connecting seat portion and the cover fastening portion in the seedling feeder moving direction is longer than the length of the cover fastening portion in the seedling feeder moving direction. The total length in the moving direction of the seedling feeder is increased. The seedling horizontal feed shaft originally has a length that allows the seedling feeder to be transported while the seedling feeder's transfer stroke becomes a transfer stroke that does not cause insufficient transfer of the seedling stand even if the total length of the seedling feeder becomes longer If the length of the seedling feeding body in the inner cylinder portion is longer than the length of the outer cylinder portion, the cover fastening portion and the feed case in a state where the seedling feeding body is located in the neutral position And the interval between the cover fastening portion and the support member can be shortened. Therefore, the length of the feed shaft cover can be shortened, and the feed shaft cover can hardly be hung down. That is, it is difficult to generate contact with the seedling horizontal feed shaft due to the feed shaft cover hanging down.

The seedling planting apparatus according to the third invention is
A seedling horizontal feed shaft extended from the feed case so as to be rotationally driven,
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to the seedling mounting table, and a connecting body that interlocks and connects the seedling feeding body to the seedling mounting table,
A pair of connecting bolts arranged in the circumferential direction of the seedling horizontal feed shaft on one end side of the connecting seat portion in the direction of moving the seedling feeding body, and the seedling feeding body movement of the connecting seat portion. Configured to be connected by a pair of connecting bolts arranged in the circumferential direction of the seedling transverse feed shaft at the other end side in the direction,
An arrangement interval of the pair of connection bolts in the one end side in the circumferential direction of the seedling horizontal feed axis is different from an arrangement interval of the pair of connection bolts in the circumferential direction of the seedling horizontal feed axis on the other end side.

  According to the configuration of the third aspect of the invention, when the connection body is to be connected to the connection seat portion in the mounting direction as designed, the arrangement interval of the connection bolts in the connection seat portion matches the arrangement interval of the connection bolts in the connection body. The coupling body can be coupled to the coupling seat. However, if you try to connect the connecting body to the connecting seat with a mounting orientation different from the designed mounting orientation, the connection spacing of the connecting bolts in the connecting seat differs from the spacing of the connecting bolts in the connecting body. The body cannot be connected to the connecting seat.

  Therefore, according to the third invention, it is possible to prevent the connecting body from being connected to the seedling feeding body in the wrong mounting direction, and the seedling mounting table is reciprocated within an appropriate movement range, and Seedlings can be supplied appropriately.

The seedling planting apparatus according to the fourth invention is:
Provided with a feed case that receives driving force from the traveling machine body and distributes and transmits the input driving force to a plurality of seedling planting mechanisms,
The feed case is configured in an oil bath structure so as to store lubricating oil, and is configured to be divided into a feed case main body and a lid case portion in a lateral direction of the machine body,
The feed case main body and the lid case portion are connected to each other by tightening and connecting a plurality of connecting bolts arranged in the circumferential direction of the connecting flange portion in a connecting flange portion provided on each peripheral portion. Configure
A metal gasket is interposed between the pair of connecting flange portions to be tightened and connected,
Each of the connecting flange portions includes an arc-shaped arc flange portion when viewed in the connecting direction, and a plurality of bolt holes positioned side by side in the connecting flange portion circumferential direction on the arc flange portion,
The arrangement pitch of the plurality of bolt holes positioned in each arc flange portion in the circumferential direction of the connecting flange portion is such that a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the distance between the pair of bolt holes. In the meantime, the arrangement pitch is set so as to be located within the width of the arc flange portion in the feed case inside / outside direction.

When the arrangement pitch of the plurality of bolt holes located in the arc flange portion in the circumferential direction of the connecting flange portion is widened, a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the pair of bolt holes. In between, it passes the part which went out of the lateral width from the circular arc flange part. When the arrangement pitch of the plurality of bolt holes located in the arc flange portion in the circumferential direction of the connecting flange portion is narrowed, a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the pair of bolt holes. In between, it passes through the location located within the width of the arc flange portion. In the arc flange portion, as the arrangement pitch of the plurality of bolt holes in the circumferential direction of the connecting flange portion becomes narrower, a larger number of bolt holes are provided within a certain range of the length in the circumferential direction of the connecting flange portion.
That is, according to the configuration of the fourth aspect of the invention, the number of bolt holes located in the circumferential direction in the connecting flange portion can be increased in the arc flange portion, and the connecting flange portion of the feed case body and the connecting flange portion of the lid case portion The parts can be connected to each other with a large number of connecting bolts so that there is no insufficient tightening, and the sealing function of the metal gasket can be exhibited well.

  Therefore, according to the fourth aspect of the present invention, the feed case is configured in an oil bath structure so that the lubricating oil can easily flow in the case, and the seal between the feed case body and the lid case portion can be accurately performed. Oil leakage can be avoided.

The seedling planting apparatus according to the fifth invention is
Provided with a feed case that receives driving force from the traveling machine body and distributes and transmits the input driving force to a plurality of seedling planting mechanisms,
The feed case is configured to be split into a feed case main body and a lid case portion in the lateral direction of the fuselage,
The feed case main body and the lid case portion are connected to each other by tightening and connecting a plurality of connecting bolts arranged in the circumferential direction of the connecting flange portion in a connecting flange portion provided on each peripheral portion. Configure
Each of the connecting flange portions includes an arc-shaped arc flange portion when viewed in the connecting direction, and a plurality of bolt holes positioned side by side in the connecting flange portion circumferential direction on the arc flange portion,
The arrangement pitch of the plurality of bolt holes positioned in each arc flange portion in the circumferential direction of the connecting flange portion is such that a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the distance between the pair of bolt holes. In the meantime, the arrangement pitch is set so as to be located within the width of the arc flange portion in the feed case inside / outside direction.

When the arrangement pitch of the plurality of bolt holes located in the arc flange portion in the circumferential direction of the connecting flange portion is widened, a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the pair of bolt holes. In between, it passes the part which went out of the lateral width from the circular arc flange part. When the arrangement pitch of the plurality of bolt holes located in the arc flange portion in the circumferential direction of the connecting flange portion is narrowed, a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the pair of bolt holes. In between, it passes through the location located within the width of the arc flange portion. In the arc flange portion, as the arrangement pitch of the plurality of bolt holes in the circumferential direction of the connecting flange portion becomes narrower, a larger number of bolt holes are provided within a certain range of the length in the circumferential direction of the connecting flange portion.
That is, according to the configuration of the fifth aspect of the invention, the number of bolt holes located in the circumferential direction in the connecting flange portion can be increased in the arc flange portion, and the connecting flange portion of the feed case body and the connecting flange of the lid case portion The parts can be connected to each other by a large number of connecting bolts so that insufficient tightening does not occur.

  Therefore, according to the fifth aspect of the invention, the seal between the feed case main body and the lid case portion can be accurately performed, and oil leakage can be avoided.

The seedling planting apparatus according to the sixth invention is:
The seedling planting claw is driven so that the tip side of the seedling planting claw rotates and moves between the seedling mounting table and the lower part of the seedling mounting table. A planting arm to be transported down and planted in a farm scene;
A seedling extrusion rod that is supported by the planting arm so as to be slidable between a seedling extrusion position and a standby position, and that extrudes the seedling from the seedling planting claw, and
An extrusion spring that is mounted in a cylindrical case portion provided in a state of bulging out of the planting arm on the wall portion of the planting arm, and that slides the seedling extrusion rod to the extrusion position;
An air vent hole formed in a portion of the wall portion adjacent to the cylindrical case portion;
An air vent plug attached to the air vent hole and allowing air venting, and
The air vent plug includes a mounting screw portion attached to a screw portion provided in the air vent hole, and a knob-shaped operation portion that rotates the air vent plug.

  According to the configuration of the sixth aspect of the invention, since the air vent plug is attached to the planting arm by engagement of the screw portion of the air vent hole and the mounting screw of the air vent plug, it is generated by the driving vibration of the planting arm or the sliding of the seedling push rod. While the air vent plug is firmly attached so that the air vent plug does not fall off due to the air pressure, the air can be released by the air vent plug when the seedling extruding rod slides.

  Since the air vent plug is attached to the air vent hole formed in the part adjacent to the cylindrical case part that bulges out from the planting arm, the air vent plug is located next to the cylindrical case part, and the guard against the air vent plug is located in the cylindrical case part. Provided with functions. Even if the air vent plug is positioned adjacent to the cylindrical case portion, the attachment screw portion can be rotated by easily operating the knob-shaped operation portion.

  Therefore, according to the sixth aspect of the invention, the air vent plug can be smoothly operated by allowing the air to escape when the seedling extruding rod slides, but the air vent plug is firmly attached by screwing so that it does not fall off easily. it can. Although the air vent plug can be guarded by the cylindrical case portion, the air vent plug can be easily detached without using a tool.

The seedling planting apparatus according to the seventh invention is
The seedling planting claw is driven so that the tip side of the seedling planting claw rotates and moves between the seedling mounting table and the lower part of the seedling mounting table. A planting arm to be transported down and planted in a farm scene;
A seedling extrusion rod that is supported by the planting arm so as to be slidable between a seedling extrusion position and a standby position, and that extrudes the seedling from the seedling planting claw, and
An extrusion spring that slides the seedling extrusion rod to the seedling extrusion side;
A swing arm that is supported by the planting arm so as to be swingable, and that returns the seedling push rod to the standby position against the push spring;
An elastic body that is supported by the planting arm and receives the swinging arm and positions the seedling extrusion rod at the seedling extrusion position when the seedling extrusion rod is slid to the seedling extrusion side;
A hollow portion that opens toward the wall portion of the planting arm is formed in a portion of the elastic body opposite to the side where the swing arm is positioned with respect to a stopper portion that receives and acts on the swing arm. It is.

  According to the configuration of the seventh aspect of the invention, when the elastic body receives the swing arm, the portion around the hollow portion of the elastic body receives the pressing force by the swing arm and is pressed against the wall portion of the planting arm. The part around the cavity of the elastic body is pressed against the wall while being deformed, and the air in the cavity is sealed while being compressed, so the swinging arm does not stop suddenly at the position where it hits the elastic body, and the brake is applied. Stop while hanging. In other words, the elastic body has a suitable hardness, and it is difficult to cause abrasion and abnormal deformation of the elastic body that has received the swing arm, while effectively preventing the occurrence of strong stop impacts on the seedling extrusion rod and swing arm. In this state, the seedling extrusion rod can be positioned at the extrusion position.

  Therefore, according to the seventh invention, the seedling extrusion rod is slid to the seedling extrusion side by the spring, but the seedling extrusion rod and the swing arm do not have a strong stop impact, and the planting arm is damaged internally. Can be made difficult to occur.

The seedling planting apparatus according to the eighth invention is:
To the seedling planting mechanism that takes out the seedling from the seedling stand, transports the extracted seedling to the field scene and plant it
A rotating rotor that is driven to rotate around a rotor rotation axis that is lateral to the fuselage;
A pair of planting arms supported at both ends of the rotating rotor separately so as to be rotatable around an arm rotation axis parallel to the rotor rotation axis;
It is attached to the bosses of each of the pair of planting arms so as to be supported relative to each other so as to be relatively rotatable, and is coupled to each of the pivots so as not to be relatively rotatable, thereby restricting the rotation of the shaft relative to the planting arm. And a connecting rod
In each of the pair of planting arms, between the boss portion and the connecting rod, a lid member between the support shaft and the boss portion, and a washer member that presses the lid member against the boss portion. Equipped and
The lid member includes a disc portion that fits externally on the spindle, and a skirt portion that extends from a peripheral portion of the disc portion toward the boss portion, and an extended end side covers the boss portion.
The washer member includes a metal disc portion fitted on the support shaft and rubber plate portions attached to both side surfaces of the disc portion.

  According to the configuration of the eighth invention, since the lid member is pressed against the boss portion by the washer member, the disc portion of the lid member is applied to the end portion of the boss portion, and the opening of the boss portion is closed by the disc portion. be able to. Moreover, the outer peripheral side of the boss part is covered with the skirt part, so that muddy water or the like can hardly enter between the disk part and the boss part. The rubber plate portions attached to both side surfaces of the disc portion of the washer member can be brought into close contact with the connecting rod and the lid member to seal between the connecting rod and the lid member, and muddy water between the boss portion and the support shaft. Can be prevented well.

  Therefore, according to the eighth aspect of the invention, it is difficult for muddy water or the like to enter the planting arm from between the boss portion and the support shaft, and it is easy to avoid internal damage of the planting arm.

The seedling planting apparatus according to the ninth invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
A power transmission mechanism that distributes the driving force input from the traveling machine to the feed case to a seedling planting mechanism, a seedling table lateral feed drive mechanism and a seedling vertical feed drive mechanism, and drive of the seedling platform lateral feed drive mechanism Contains a lateral feed speed change mechanism that changes speed,
On the rear side of the body of the connecting seat, there is a boss that protrudes laterally from the lateral side of the feed case and supports the shift operation shaft of the lateral feed speed change mechanism slidably inserted in the lateral direction of the body. Provided,
Reinforcing ribs extending in the longitudinal direction of the aircraft from the lateral side to the aircraft laterally outwardly project between the connecting seat portion and the boss portion,
A front end side of the reinforcing rib is connected to the connecting seat portion, and a rear end side of the reinforcing rib is connected to the boss portion.

  According to the structure of the ninth aspect of the invention, the boss portion and the connecting seat portion are reinforced by the connection by the reinforcing rib along the longitudinal direction of the machine body near the rear of the main frame. The feed case can be provided with a strength that can be firmly countered even if it is subjected to the above.

  Therefore, according to the ninth aspect of the present invention, it is possible to obtain a seedling planting device that has a simple structure in which only the reinforcing ribs are provided, but has a strong body structure due to the excellent strength of the feed case.

The seedling planting apparatus according to the tenth invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
Above the connecting seat, a pair of upper and lower sensor mounting seats are provided that project from the lateral side of the feed case in the lateral direction of the body, and the tilt sensor is attached by a connecting bolt.
Reinforcing ribs extending in the vertical direction of the fuselage from the lateral side portion outward from the fuselage are projected between the pair of upper and lower sensor mounting seats,
The upper end side of the reinforcing rib is connected to the upper sensor mounting seat portion of the pair of upper and lower sensor mounting seat portions, and the lower end side of the reinforcing rib is the lower sensor mounting seat of the pair of upper and lower sensor mounting seat portions. It is connected to the part.

  According to the configuration of the tenth aspect of the present invention, the feed case is located above the portion of the feed case that is connected to the main frame that faces the fuselage, and distortion in the direction of tilting to the left and right is less likely to occur due to the support action of the main frame. The tilt sensor is supported by a pair of upper and lower sensor mounting seats. Furthermore, by connecting the pair of upper and lower sensor mounting seats with reinforcing ribs along the vertical direction of the fuselage, it is reinforced so that relative displacement in the vertical direction of the fuselage is less likely to occur between the pair of upper and lower sensor mounting seats. Therefore, the inclination sensor can be supported in a state where it is easy to avoid the detection operation of the inclination sensor due to the distortion of the support structure.

  Therefore, according to the tenth aspect of the present invention, the tilt sensor can be supported by the feed case in a state where improper detection is difficult even though the sensor mounting seat is provided at a reasonable location and the reinforcing rib is simply provided. it can.

The seedling planting apparatus according to the eleventh invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
The feed case is configured to be split into a feed case main body and a lid case portion in the lateral direction of the fuselage,
Protruding from the front portion of the feed case body toward the front of the fuselage, and provided with an oil supply cylinder portion that forms a lubricating oil supply path with respect to the inside of the feed case,
Above the connecting seat portion, a reinforcing rib is provided from the front surface portion toward the front of the machine body, between a connecting flange portion provided on the feed case body for connecting the lid case portion, and the lubricating cylinder portion. Projecting
One end side of the reinforcing rib is connected to the oil supply cylinder portion, and the other end side of the reinforcing rib is connected to the connecting flange portion.

  According to the configuration of the eleventh aspect of the present invention, the lubrication cylinder portion and the connecting flange portion reinforce each other by the connection by the reinforcing rib above the connecting seat portion, so that the ground reaction force from the main frame and the seedling planting device portion The feed case can be provided with a strength that can be firmly countered even under load.

  Therefore, according to the eleventh aspect of the present invention, a seedling planting device can be obtained in which the structure of the machine body is strong due to the excellent strength of the feed case, while having a simple structure in which reinforcing ribs are provided.

The seedling planting apparatus according to the twelfth invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
A boss portion is provided that protrudes laterally from the lateral side of the feed case and is supported in a relatively rotatable manner by inserting the output shaft of the transmission mechanism to the seedling longitudinal feed drive mechanism in the lateral direction of the aircraft.
Reinforcing ribs project from the lateral side portion outward from the fuselage between the connecting seat portion and the boss portion,
One end side of the reinforcing rib is connected to the connecting seat portion, and the other end side of the reinforcing rib is connected to the boss portion.

  According to the configuration of the twelfth aspect of the present invention, the boss portion and the connecting seat portion are reinforced by the connection by the reinforcing rib, and feed the grounding reaction force from the main frame and the strength that can strongly resist the load of the seedling planting device portion. Be prepared for the case.

  Therefore, according to the twelfth invention, it is possible to obtain a seedling planting apparatus that has a simple structure in which only the reinforcing ribs are provided, but has a strong body structure due to the excellent strength of the feed case.

The seedling planting apparatus according to the thirteenth invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
Protruding sideways from the lateral side of the feed case and provided with a guide mounting seat to which a lever guide is attached by a connecting bolt,
A stay portion connected to the lateral side portion and a lower portion of the guide mounting seat portion and supporting the guide mounting seat portion from below is provided.

  According to the configuration of the thirteenth aspect of the invention, the support of the guide mounting seat portion by the feed case can be strengthened by the reinforcement of the stay portion, and even if a strong lever operating force is applied to the lever guide, the lever guide moves to the guide mounting seat portion. It can be firmly supported as difficult.

  Therefore, according to the thirteenth aspect of the invention, the lever guide can be supported on the feed case without being easily displaced while having a simple structure in which only the stay portion is provided.

The seedling planting apparatus according to the fourteenth invention is
A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
A supporting shaft mounting portion on which a rolling support shaft facing the vehicle body is connected to a support member included in the traveling vehicle body so that the feed case can be rolled, and a front and rear body device that inputs driving force from the traveling vehicle body to the feed case. An input boss part is inserted in the front part of the feed case to support the relative rotation by inserting the input shaft in the direction,
A seedling planting device in which a reinforcing rib is connected across a feed case inner portion of the support shaft mounting portion and a feed case inner portion of the input boss portion.

  According to the configuration of the fourteenth aspect of the present invention, since the support shaft mounting portion is reinforced by the input boss portion via the reinforcing rib, the rolling support shaft can be firmly supported by the feed case, and the feed case can be smoothly supported by the support member of the traveling machine body. Can be supported to roll.

  Therefore, according to the fourteenth invention, the seedling planting device can be connected to the traveling machine body so as to roll smoothly.

It is a side view showing the whole riding type rice transplanter. It is a side view which shows a seedling planting apparatus. It is a front view which shows a seedling planting apparatus. It is a top view which shows the principal part of a seedling planting apparatus. It is sectional drawing which shows a seedling planting mechanism. It is a vertical side view which shows a planting arm. It is sectional drawing which shows the connection part of a connection rod. It is a perspective view which shows the whole air vent plug. It is a perspective view which shows the whole elastic body. It is sectional drawing which shows a seedling stand horizontal feed drive mechanism. It is a top view which shows a seedling sending body. It is a longitudinal cross-sectional view which shows a seedling feeding body. It is a XIII-XIII cross-sectional arrow view of FIG. It is a perspective view which shows a connection body and a seedling feeding body. It is sectional drawing in the expansion | deployment state of a feed case. It is a perspective view which shows a feed case and a main frame. It is a front view which shows a feed case. It is a side view which shows the circular arc flange part of the flange for connection. It is a left view which shows the front part of a planting apparatus frame. It is a perspective view which shows a feed case main body. It is a right view which shows the front part of a planting apparatus frame. It is a perspective view which shows a cover case part. It is a perspective view which shows a feed case main body. It is a perspective view which shows a feed case main body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an entire riding rice transplanter equipped with a seedling planting apparatus according to an embodiment of the present invention. As shown in FIG. 1, the riding type rice transplanter includes a traveling machine body equipped with a pair of left and right front wheels 1, 1 on the front side and equipped with a pair of left and right rear wheels 2, 2 on the rear side. . A driving unit 3 having an engine 3a is provided on the front side of the traveling machine body, and the traveling machine body is self-propelled so that the front wheels 1 and the rear wheels 2 are driven by the driving force from the engine 3a to self-run. It is configured. On the rear side of the traveling machine body, there is provided a riding section 7 provided with a driving seat 4, a steering handle 5 for steering the front wheel 1, and a driving step 6. It is configured as a passenger type. A seedling planting apparatus 10 including six seedling planting mechanisms 11 is connected to the rear part of the traveling machine body. On the front side of the traveling machine body, a pair of left and right reserve seedling storage devices 8 are provided that are separately located on both lateral sides of the prime mover 3. A rear step 9 mainly used for the operation of supplying seedlings to the seedling mounting base 12 of the seedling planting device 10 is provided at locations on both sides of the driving seat 4 and the rear side of the traveling machine body.

  The seedling planting device 10 is supported by an extended end portion of a link mechanism 20 that extends from the machine body to the rear side so as to be able to swing up and down, and the link mechanism 20 is swing-operated by an elevating cylinder 21 that is a hydraulic cylinder. Thus, the grounding float 13 located at the lower part of the seedling planting device 10 is moved up and down to a descending working state where the grounding float 13 descends to the field scene and comes into contact with the ground, and an ascending non-working state where the grounding float 13 rises high from the field scene. .

  The riding-type rice transplanter performs seedling planting work in which six seedlings can be planted by the seedling planting apparatus 10 by lowering the seedling planting apparatus 10 to the lowered work state and running the machine body.

The seedling planting device 10 will be described.
FIG. 2 is a side view showing the seedling planting device 10. FIG. 3 is a front view showing the seedling planting apparatus. FIG. 4 is a plan view showing the main part of the seedling planting device 10. As shown in FIGS. 2, 3, and 4, the seedling planting device 10 includes a planting device frame 14 having a front end connected to a support member 22 provided at an extended end of the link mechanism 20. The planting device frame 14 includes a main frame 15 that is long in the lateral direction of the vehicle body (hereinafter simply referred to as the lateral direction of the vehicle body), a feed case 16 that is coupled to an intermediate portion of the main frame 15 in the lateral direction of the aircraft body, It is provided with three planting drive cases 17 that extend from the frame 15 toward the rear side of the traveling body (hereinafter simply referred to as the rear side of the body) and are arranged at intervals in the lateral direction of the body. As shown in FIGS. 16 and 19, the main frame 15 is constituted by a steel pipe member having a rectangular longitudinal cross-sectional shape.

  As shown in FIGS. 2 and 19, the feed case 16 and the support portion 22 a provided at the lower portion of the support member 22 are connected to the front surface portion on the upper end side of the feed case 16 and the rolling support shaft 18 facing in the longitudinal direction of the machine body. The planting device frame 14 is supported by the traveling vehicle body so that the rolling support shaft 18 can be freely rolled with the axial axis of the rolling support shaft 18 as the rolling shaft core. Therefore, the seedling planting apparatus 10 rolls with respect to the traveling machine body by the contact of the grounding float 13 with respect to the mud surface even if the traveling machine body is tilted to the left and right by the unevenness of the hard board portion or the left and right inclination in the farm field, The seedling planting depth by the attaching mechanism 11 is the same or substantially the same.

The seedling planting mechanism 11 is supported to be drivable on both lateral sides of the rear end of each of the three planting drive cases 17. Above the front side of the planting device frame 14, a seedling platform 12 that supplies seedlings to each seedling planting mechanism 11 is provided. The seedling stage 12 is supported in an inclined posture that is located on the rear side of the machine body at the lower end side. Three grounding floats 13 are arranged in the lower part of the planting device frame 14 so as to be arranged at intervals in the lateral direction of the airframe.

The seedling planting mechanism 11 will be described.
FIG. 5 is a cross-sectional view showing the seedling planting mechanism 11. As shown in FIGS. 2, 4, and 5, each seedling planting mechanism 11 is provided on the lateral side portion of the planting drive case 17 so as to be rotatably driven via a rotor support shaft 30 a facing the machine body. And a pair of planting arms 31 that are supported at both ends of the rotary rotor 30 so as to be rotationally driven by arm support shafts 31a that are lateral to the machine body. As shown in FIG. 6, a claw mounting seat 31b is provided at the tip of each planting arm 31, and a seedling planting claw 32 is detachably attached to the claw mounting seat 31b by a connecting bolt 32a.

  The rotary rotor 30 is driven by the driving force input from the feed case 16 to the planting drive case 17, so that the rotor support shaft 30a is rotationally driven. Driven around. The pair of planting arms 31 revolves around the rotor rotation axis 30b when the rotary rotor 30 is driven to rotate. The pair of planting arms 31 is configured so that the gear-type planting arm drive mechanism 33 provided in the rotary rotor 30 is driven by the driving force of the rotor shaft 30a to rotationally drive the arm shaft 31a. The machine body 31a has a transverse axis and is driven to rotate about the arm rotation axis 31c parallel to the rotor rotation axis 30b so as to rotate about the rotation rotor 30.

  As shown in FIG. 6, each of the pair of planting arms 31 includes a seedling pushing rod 34 that is slidably supported by a rod support portion 31 d that is located at the distal end portion. A seedling pushing operation portion 34 a is provided at the tip of the seedling pushing rod 34. The seedling push-out rod 34 has a seedling push-out position where the seedling push-out operation portion 34 a is located on the tip side of the seedling planting claw 32 by a rod operation mechanism 40 provided with an extrusion spring 41 provided inside the planting arm 31. The seedling pushing operation part 34a is slid in parallel or substantially parallel to the seedling planting claw 32 from the seedling pushing position to the standby position retracted toward the proximal end side of the seedling planting claw 32. When the seedling extruding rod 34 is operated to the seedling extruding position, the root portion of the seedling held by the tip of the seedling planting nail 32 is pressed by the seedling extruding operation section 34a, and the seedling is removed from the seedling planting nail 32. Extrude operation. When the seedling pushing rod 34 is operated to the standby position, the seedling extruding rod 34 can be taken out and held by the tip of the seedling planting claws 32.

  Accordingly, each seedling planting mechanism 11 is configured such that the tip end side of the seedling planting claw 32 of each of the pair of planting arms 31 is between the lower end side of the seedling platform 12 and the field scene by rotating the rotary rotor 30. The seedling planting claws 32 of the pair of planting arms 31 alternately took out a part from the lower end of the mat-like seedling placed on the seedling platform 12 as a planting seedling. The planting seedling is held, descended to the farm scene and planted in the mud, and after planting, the seedling planting exercise is performed to return to the lower end side of the seedling mount 12.

  Each seedling planting mechanism 11 operates the rod operating mechanism 40 in accordance with the seedling planting movement, and when the seedling planting claw 32 performs seedling planting, the seedling pushing rod 34 is operated to the pushing position, and the seedling is seeded. When the seedling planting claw 32 is pushed out from the planting claw 32 to the mud and then rises after planting the seedling, the seedling pushing rod 34 is returned to the standby position to prevent the seedling planting claw 32 from lifting the seedling. Thereafter, until the seedling planting claw 32 performs the next seedling planting, the seedling pushing rod 34 is held at the standby position, so that the seedling planting claw 32 can take out and hold the seedling.

The rod operation mechanism 40 will be described in detail.
As shown in FIGS. 5 and 6, the rod operation mechanism 40 includes an extrusion spring 41, a swing arm 42, an operation cam 43, and an elastic body 44 provided inside the planting arm 31.

  A cylindrical case portion 35 is provided on the rear wall 31r of the planting arm 31 so as to bulge out of the planting arm. The pushing spring 41 is attached to the cylindrical case portion 35 in a state of being interposed between a spring receiving portion 34b provided on the proximal end side of the seedling pushing rod 34 and a bulging side end portion 35a of the cylindrical case portion 35. Decorated. The pushing spring 41 slides the seedling pushing rod 34 to the seedling pushing side by pressing the spring receiving portion 34b of the seedling pushing rod 34 with the bulging side end 35a of the cylindrical case 35 as a reaction point.

  The swing arm 42 is swingably supported on the left and right side wall portions of the planting arm 31 via the support shaft 42a. The tip end portion of the swing arm 42 and the seedling push rod 34 are interlocked and connected by a connecting member 45. An operated arm portion 42 b extends from the base portion of the swing arm 42 toward the operation cam 43. The operated arm portion 42b moves around the operation cam 43 when the planting arm 31 swings with respect to the rotary rotor 30 around the arm rotation axis 31c in accordance with the seedling planting movement of the seedling planting mechanism 11. As a result, it is located on the cam peripheral surface 43a of the operation cam 43 or deviated from the cam peripheral surface 43a.

  Therefore, the rod operating mechanism 40 slides the seedling pushing rod 34 between the pushing position and the standby position by the swing arm 42 swung by the operation cam 43 and the pushing spring 41, and pushes the seedling. The rod 34 is maintained at the standby position.

  That is, when the seedling planting claws 32 plant seedlings, the operated arm portion 42 b is disengaged from the cam peripheral surface 43 a and the swing arm 42 is moved by the operation cam 43 due to rotation of the planting arm 31 with respect to the rotating rotor 30. By not receiving the support, the push spring 41 slides the seedling push rod 34 to the push position while swinging the swing arm 42 around the support shaft 42a.

  As the seedling planting claws 32 rise after finishing seedling planting, the operated arm portion 42b rides on the cam peripheral surface 43a and the swing arm 423 operates to rotate the planting arm 31 relative to the rotary rotor 30. By receiving the swinging operation by the cam 43, the swinging arm 42 operates the seedling pushing rod 34 to return to the standby position against the pushing spring 41.

  From the time the seedling planting claw 32 finishes seedling planting until the next seedling planting is performed, the operated arm portion 42b is positioned on the cam peripheral surface 43a and the operation cam 43 pushes the swing arm 42 and pushes the spring 41. Therefore, the swing arm 42 keeps the seedling push rod 34 against the push spring 41 at the standby position.

  FIG. 9 is a perspective view showing the entire elastic body 44. As shown in FIG. 6, the elastic body 44 is sandwiched with a base portion 44 a fitted inside a support portion 36 provided on a wall portion 31 f on the front side of the planting arm 31. An annular ridge 44b projecting from the outer peripheral surface of the base portion 44a strengthens the support by the support portion 36 by elastic deformation due to clamping by the support portion 36.

  The elastic body 44 includes a stopper portion 44c protruding from the support portion 36 toward the swing arm side. When the seedling push rod 34 is slid by the push spring 41, the positioning portion 42c provided on the swing arm 42 is stopped. The seedling pushing rod 34 is received by the portion 44c and positioned at the pushing position.

  A hollow portion 44d is provided in a portion of the elastic body 44 opposite to the side where the swing arm 42 is located with respect to the stopper portion 44c. The shape of the hollow portion 44d is formed in a shape that opens toward the wall portion 31f. The elastic body 44 positions the seedling pushing rod 34 at the pushing position while effectively reducing the stop impact of the seedling pushing rod 34 and the swing arm 42.

  That is, when the elastic body 44 receives the swing arm 42 by the stopper portion 44c, the portion around the cavity portion of the elastic body 44 is pressed against the wall portion 31f by the pressing force of the swing arm 42, and the portion around the cavity portion. Is pressed against the wall 31f while being deformed, and the air in the cavity 44d is sealed while being compressed. As a result, the swing arm 42 is not suddenly stopped at the position where it hits the stopper portion 44c, but is braked by elastic deformation of the hollow portion, and stops after the portion around the hollow portion is deformed.

  A support shaft 46 that supports the operation cam 43 in a relatively non-rotatable manner is supported by a boss portion 37 provided on the planting arm 31 so as to be relatively rotatable, and the operation cam 43 has the same axis as the arm rotation axis 31c. The structure is such that it can rotate relative to the planting arm 31 around the axis of the support shaft 46. However, the connecting rod 47 provided across the pair of planting arms 31 restricts the rotation of the operation cam 43 relative to the planting arm 31 so that the swing arm 42 can be swung as predetermined by the operation cam 43. It is configured.

That is, the connecting rod 47 includes an end portion 46 a that protrudes outside the planting arm from the boss portion 37 of the support shaft 46 in one planting arm 31, and a shaft 46 in the other planting arm 31. It is attached to the end portion 46a protruding from the boss portion 37 to the outside of the planting arm, and is prevented from coming off by a nut 48 (a nut with a bag) attached to each support shaft 46. As shown in FIG. 7, the longitudinal cross-sectional shape of the end portion 46 a of each support shaft 46 is formed in a rectangular shape, and the shape of the attachment hole for the support shaft 46 of the connecting rod 47 is the vertical cross-sectional shape of the end portion 46 a of the support shaft 46. Since it is formed in a similar rectangular shape, the connecting rod 47 is connected to each supporting shaft 46 so as not to be relatively rotatable.
Accordingly, the connecting rod 47 connects the support shafts 46 of the pair of planting arms 31 so as not to rotate relative to each other, thereby restricting the rotation of the support shaft 46 relative to the planting arm 31 in each of the pair of planting arms 31. The operation cam 43 is regulated so as not to rotate together with the planting arm 31.

  As shown in FIGS. 5 and 7, in each of the pair of planting arms 31, a lid member 50 and a washer member 51 are interposed between the boss portion 37 and the connecting rod 47, and the boss portion 37 and the support shaft 46 are connected. It is configured to prevent intrusion of muddy water and the like between them.

  In other words, the lid member 50 includes a disk part 50 a that is externally fitted to the support shaft 46, and a skirt part 50 b that extends from the peripheral part of the disk part 50 a toward the boss part 37. The washer member 51 presses the lid member 50 against the boss portion 37 by the tightening force of the nut 48 applied through the connecting rod 47. Accordingly, the lid member 50 applies the disc portion 50a to the end portion of the boss portion 37, closes the opening of the boss portion 37 with the disc portion 50a, covers the skirt portion 50b on the boss portion 37, and the skirt portion. 50 b makes it difficult for muddy water to enter between the disk portion 50 a and the boss portion 37.

  The washer member 51 includes a metal disc portion 51 a that fits around the support shaft 46, and rubber plate portions 51 b that are attached to both side surfaces of the disc portion 51 a, and is a nut that is applied via a connecting rod 47. The rubber plate portion 51 b is brought into close contact with the connecting rod 47 and the lid member 50 by the tightening force of 48, and the space between the connecting rod 47 and the lid member 50 is sealed.

  A rubber washer 52 is interposed between the nut 48 and the connecting rod 47. The rubber washer 52 includes a metal disk portion fitted on the support shaft 46 and rubber plate portions attached to both side surfaces of the disk portion. 48 and the connecting rod 47 are brought into close contact with each other to seal between the nut 48 and the connecting rod 47.

  An air vent hole 53 is provided in a portion of the planting arm 31 adjacent to the cylindrical case portion 35, an air vent plug 54 is attached to the air vent hole 53, and planting is carried out as the seedling pushing rod 34 is slid to the standby position. Air can escape from the inside of the arm 31.

  FIG. 8 is a perspective view showing the entire air vent plug 54. As shown in FIGS. 6 and 8, the air vent plug 54 includes a male screw-type screw portion 54a provided on one end side and a knob-shaped operation portion 54b provided on the other end side. The entire air vent plug 54 is made of a molded resin material.

  That is, the air vent plug 54 rotates the entire air vent plug 54 with the operation portion 54 b to rotate the screw portion 54 a, and attaches the screw portion 54 a to the female screw-type screw portion 53 a provided in the air vent hole 53. By doing so, it can be attached to the air vent hole 53, and can be removed from the air vent hole 53 by detaching the screw portion 54 a from the screw portion 53 a of the air vent hole 53.

  When the air vent plug 54 is attached to the air vent hole 53, a gap is formed between the screw portion 54 a of the air vent plug 54 and the screw portion 53 a of the air vent hole 53. The air is vented to the outside and the air is sucked into the planting arm 31 in accordance with the slide operation 34.

The seedling supply to the seedling planting mechanism 11 by the seedling stage 12 will be described.
As shown in FIG. 2, the seedling stage 12 is provided with six seedling placement units for arranging and placing mat-like seedlings to be supplied to the six seedling planting mechanisms 11 in the horizontal direction of the machine body. The seedling stage 12 is provided above the planting drive case 17 and is erected upward from the main frame 15 and a guide rail 55 which is long in the lateral direction of the machine body and supports the lower end side of the seedling stage 12. A seedling support frame 56 that supports and supports the upper end side of the mounting table 12 is supported to be slidable in the lateral direction of the machine body. The seedling support frame 56 includes a support frame 56a that is installed on the upper end side of the pair of left and right support columns, and a support roller 56b that is rotatably supported via a support arm at a plurality of positions of the support frame 56a. Yes. The seedling support frame 56 is fixed to the back surface side of the seedling mounting base 12 so as to support the inside of the upper guide rail 57 formed in a U shape with a longitudinal section opening downward by a plurality of support rollers 56b. It is configured.

  The seedling stage 12 is moved in the lateral direction of the machine body in conjunction with the seedling planting movement of the seedling planting mechanism 11 by a seedling stage lateral feed drive mechanism 60 provided across the feed case 16 and the lower end side of the seedling stage 12. It is configured to be reciprocated. That is, the seedling planting mechanism 11 takes out a part of the mat-shaped seedling placed on the seedling placement section as a planting seedling at the seedling removal opening provided on the guide rail 55, and seedling planting. The seedling mounting stand 12 converts the mat-like seedlings of each seedling placement portion into seedlings so that the seedling removal by the attaching mechanism 11 is sequentially performed from one end side to the other end side in the lateral direction of the lower end portion of the mat-like seedlings. It is transferred in the transverse direction to the planting mechanism 11.

  As shown in FIG. 2, a seedling vertical feed belt 70 that vertically feeds mat-like seedlings toward the seedling planting mechanism 11 is provided on the lower end side of each seedling placement portion of the seedling placing stand 12. Each seedling vertical feed belt 70 is fed by a seedling vertical feed drive mechanism 71 provided across the feed case 16 and the lower end side of the seedling stage 12 when the seedling stage 12 reaches the left and right stroke ends of the lateral transfer. The mat-like seedlings are configured to feed the seedling-planting mechanism 11 vertically by a length corresponding to the length in the seedling longitudinal direction of the seedlings that are driven and the seedling-planting mechanism 11 takes out from the mat-like seedlings. .

The seedling table lateral feed drive mechanism 60 will be described.
FIG. 10 is a cross-sectional view showing the seedling table lateral feed drive mechanism 60. As shown in FIGS. 4 and 10, the seedling platform lateral feed drive mechanism 60 is extended from the feed case 16 so as to be rotationally driven laterally outward from the machine body, and is supported by the seedling lateral feed shaft 61 and the seedling lateral feed shaft 61. The seedling feeder 62 is provided. The extending end side of the seedling horizontal feed shaft 61 is supported by a support member 63 fixed to the main frame 15 so as to be relatively rotatable. The seedling feeding body 62 is fitted on the seedling lateral feed shaft 61 so as to be relatively rotatable, and is supported by the seedling lateral feed shaft 61 so as to be slidable.

  A lateral feed cam mechanism 65 having a spiral transfer groove 64 formed on the peripheral surface of the seedling lateral feed shaft 61 is provided across the seedling lateral feed shaft 61 and the seedling feed body 62. The lateral feed cam mechanism 65 includes a feed piece body 66 supported by the seedling feed body 62. The feed piece body 66 is provided with a passive claw that is slidably inserted into the spiral transfer groove 64. In the spiral transfer groove 64, a left-feeding spiral groove part that moves leftward with respect to the passive claw and a right-feeding spiral groove part that moves rightward with respect to the passive claw are provided at both ends of the seedling horizontal feed shaft 61. It is provided in a state of connection.

  That is, the lateral feed cam mechanism 65 moves the seedling feed body 62 into the seedling lateral feed shaft 61 by the rotational force of the seedling lateral feed shaft 61 and the reciprocating transfer of the feed piece body 66 through the passive claw by the spiral transfer groove 64. And reciprocating along.

  The seedling feeding body 62 is connected to the seedling mounting base 12 by a connecting body 68 connected across an intermediate portion in the moving direction of the seedling feeding body 62 and an operation member 67 provided on the back surface side of the seedling mounting base 12. Linked together. The operation member 67 is fixed to a seedling stage frame 12 a provided on the back side of the seedling stage 12.

  Accordingly, the seedling horizontal feed drive mechanism 60 is configured so that the seedling feed shaft 62 is rotated by the driving force from the feed case 16 so that the seedling feed body 62 is moved by the action of the transverse feed cam mechanism 65. The seedling mounting table 12 is reciprocally transferred to the left and right via the connecting body 68 by the seedling feeding body 62.

  A cylindrical feed shaft cover 80 that covers the seedling lateral feed shaft 61 is attached to one end portion of the seedling feed body 62 and the support member 63. A cylindrical feed shaft cover 80 that covers the seedling lateral feed shaft 61 is attached to the other end portion of the seedling feed body 62 and the boss portion 61 a of the feed case 16. The end portion of each feed shaft cover 80 on the seedling feed body side is fixed to a cover fastening portion 81 provided at one end and the other end of the seedling feed body 62.

  As shown in FIGS. 10, 11, and 12, each cover fixing portion 81 of the seedling feed body 62 is configured by an annular groove formed on the outer peripheral surface of the seedling feed body 62, and is formed on the inner peripheral surface of the feed shaft cover 80. The provided mounting ridge is fitted and the end of the feed shaft cover 80 is held by preventing the mounting ridge from coming off by the tightening force of the winding band 82.

  Each feed shaft cover 80 is configured to be extendable so that it can be extended by a pulling operation of the transferred seedling feeder 62 and shortened by a pressing operation of the transferred seedling feeder 62. ing. Each feed shaft cover 80 is specifically constituted by a bellows cover.

A connection structure for interlockingly connecting the seedling feeder 62 and the seedling mount 12 will be described in detail.
As shown in FIGS. 10 and 14, the connecting body 68 that interlocks and connects the seedling feeding body 62 and the seedling mounting stand 12 rises from the plate-like connecting portion 68 a on the seedling feeding body side and the connecting portion 68 a on the seedling feeding body side. And a connection part 68b on the seedling stage side. The connection part 68a on the seedling feeding body side is configured to be detachably connected to a connection seat 83 provided on the seedling feeding body 62 by four connection bolts 84. The connecting part 68b on the seedling stage side is configured to be detachably connected to the operation member 67 of the seedling stage 12 by a connecting bolt 86 in a direction along the direction of moving the seedling feeder.

  FIG. 11 is a plan view showing the seedling feeder 62. FIG. 12 is a longitudinal sectional view showing the seedling feeder 62. As shown in FIGS. 10, 11, and 12, the connecting seat portion 83 is provided between the cover fastening portion 81 on one end side of the seedling feeding body 62 and the cover fastening portion 81 on the other end side. It is provided in an arrangement that is located at a distance D with respect to the wearing part 81. The length L1 of the interval D between the connecting seat portion 83 and each cover fastening portion 81 in the direction of moving the seedling feeder is set to be longer than the length L2 of the cover fastening portion 81 in the direction of moving the seedling feeder. is there. Therefore, the distance D between the connecting seat portion 83 and the cover fastening portion 81 and the length of the cover fastening portion 81 are the same, or the distance D between the connecting seat portion 83 and the cover fastening portion 81 is the cover fastening. Compared with the one shorter than the portion 81, the interval between the feed shaft cover 80 attached to one end portion of the seedling feed body 62 and the feed shaft cover 80 attached to the other end portion of the seedling feed body 62 can be widened.

  A support hole 87 for supporting the feed piece body 66 and a grease chamber 88 are opened in the connecting seat portion 83. The shape of the connecting portion 68a on the seedling feeder side of the connecting body 68 is formed so as to close the opening of the support hole 87 and the grease chamber 88, and a lid function for closing the support hole 87 and the grease chamber 88 on the connecting portion 68a on the seedling feeder side is provided. I have it.

The arrangement of the bolt holes 89 for the four connecting bolts 84 provided in the connecting seat portion 83 is set to the arrangement shown in FIG.
That is, a pair of bolt holes 89 out of the four bolt holes 89 are positioned side by side in the seedling horizontal feed shaft circumferential direction on one end side in the seedling feed body moving direction of the connecting seat 83, The other pair of bolt holes 89 are set to be arranged side by side in the circumferential direction of the seedling lateral feed axis on the other end side of the connecting seat 83 in the direction of moving the seedling feed body. Furthermore, the arrangement interval L3 of the pair of bolt holes 89 positioned on one end side of the connecting seat portion 83 in the circumferential direction of the seedling horizontal feed axis is equal to the seedling side of the pair of bolt holes 89 positioned on the other end side of the connecting seat portion 83. The arrangement is set to be longer than the arrangement interval L4 in the circumferential direction of the feed shaft.

  That is, in order to connect the connecting portion 68a on the seedling feeder side of the connecting body 68 and the connecting seat portion 83, the pair of connecting bolts 84 are fed laterally on one end side of the connecting seat portion 83 in the moving direction of the seedling feeder. The connecting portion 68a and the connecting seat portion 83 are mounted so as to be arranged at the arrangement interval L3 in the axial circumferential direction, and the pair of connecting bolts 84 are attached to the other end side of the connecting seat portion 83 in the seedling feeder moving direction. It is configured to be mounted across the connecting portion 68a and the connecting seat portion 83 in an arrangement in which the arrangement interval L4 is narrower than the arrangement interval L3 on one end side in the circumferential direction of the transverse axis.

  Accordingly, when the connection portion 68a is to be connected to the connection seat portion 83 in the mounting direction as designed, the arrangement interval of the connection bolts 84 in the connection seat portion 83 in the seedling lateral feed shaft circumferential direction and the connection bolt 84 in the connection portion 68a. The arrangement interval in the circumferential direction of the seedling horizontal feed axis coincides with each other, and the connecting portion 68a can be connected to the connecting seat portion 83. However, if it is attempted to connect the connecting portion 68a to the connecting seat 83 in the mounting direction opposite to the designed mounting direction, the arrangement interval of the connecting bolts 84 in the connecting seat portion 83 in the circumferential direction of the seedling lateral feed shaft, and the connection The arrangement interval of the connection bolts 84 in the portion 68a in the circumferential direction of the seedling horizontal feed axis is different, and the connection portion 68a cannot be connected to the connection seat portion 83.

  13 is a cross-sectional view taken along the line XIII-XIII in FIG. As shown in FIGS. 10, 12, and 13, the seedling feeding body 62 includes an inner cylinder portion 62 a that fits outside the seedling lateral feed shaft 61 and an outer cylinder portion 62 b that has a cover fastening portion 81 at one end and the other end. The gap 62c is formed between the inner cylinder 62a and the outer cylinder 62b and is open toward the side where the feed shaft cover 80 is located. Accordingly, when the seedling feeding body 62 is manufactured by casting, it is less likely to cause a shrinkage than a seedling feeder 62 that does not include the gap portion 62c.

  As shown in FIG. 13, the gaps 62 c are formed at three locations in the circumferential direction of the seedling feeder 62. Of the three locations, the two gaps 62c located on the lower side of the seedling feeder 62 extend over the entire length of the outer cylinder 62b. As shown in FIGS. 11 and 12, the inner cylinder part 62a extends longer than the outer cylinder part 62b on the side where the feed shaft cover 80 is located.

The seedling vertical feed drive mechanism 71 will be described.
As shown in FIG. 4, the seedling vertical feed drive mechanism 71 includes a vertical feed drive shaft that is extended so as to be rotationally driven toward the outer side of the machine body opposite to the side from which the seedling horizontal feed shaft 61 extends from the feed case 16. 72 and a belt drive arm 73 supported on the seedling stage 12 so as to be swingable. The extending end side of the longitudinal feed drive shaft 72 is supported by a support member 74 supported by the main frame 15 so as to be relatively rotatable.

  The longitudinal feed drive shaft 72 is rotationally driven by the driving force from the feed case 16 and rotationally drives a transmission arm 75 provided on the left end side and the right end side so as not to be relatively rotatable. The belt drive arm 73 is configured to be able to transmit to a belt drive wheel around which the seedling vertical feed belt 70 of each seedling placement unit is wound.

Therefore, the seedling vertical feed drive mechanism 71 drives the seedling vertical feed belt 70 by the contact between the transmission arm 75 and the belt drive arm 73 when the seedling stage 12 reaches the lateral transfer stroke end.
That is, when the seedling stage 12 reaches the left stroke end of the lateral transfer, the belt drive arm 73 and the left transmission arm 75 come into contact with each other, and the belt drive arm 73 is set by the left transmission arm 75 from the standby position to the set rotation angle. Only, and the driving force is transmitted to each belt driving wheel body to drive each seedling vertical feed belt 70. When the seedling stage 12 reaches the right stroke end of the lateral transfer, the belt driving arm 73 and the right transmission arm 75 come into contact with each other, and the belt driving arm 73 is driven by the right transmission arm 75 from the standby position by a set rotation angle. Then, a driving force is transmitted to each belt drive wheel body to drive each seedling vertical feed belt 70.

As shown in FIG. 15, the feed case 16 accommodates a transmission mechanism 90 that distributes and transmits the driving force from the engine 3 a to the seedling planting mechanism 11, the seedling table lateral feed driving mechanism 60, and the seedling longitudinal feed driving mechanism 71. Has been. The transmission mechanism 90 will be described.
As shown in FIG. 15, the transmission mechanism 90 projects forward from the front portion of the feed case 16 toward the front of the machine body, and the driving force from the engine 3 a is transmitted via the rotary transmission shaft 91 (see FIGS. 1 and 19). A shaft 92 is provided, and the driving force of the input shaft 92 is transmitted to the distribution transmission shaft 95 via the input shaft gear 93 and the transmission shaft gear 94, and the lateral transmission speed change mechanism 96 and the planting distribution transmission shaft 97 are transmitted from the distribution transmission shaft 95. And the transmission force of the speed change output shaft 96a of the seedling horizontal feed transmission mechanism 96 is transmitted to the seedling horizontal feed drive mechanism 60 and the seedling vertical feed drive mechanism 71. 72 to be distributed and transmitted. The planting distribution transmission shaft 97 distributes and transmits the driving force from the distribution transmission shaft 95 to the three planting drive cases 17.

  Transmission from the distribution transmission shaft 95 to the planting distribution transmission shaft 97 includes a transmission gear 95a that is provided on the distribution transmission shaft 95 so as not to rotate relative thereto, a relay transmission gear 98 that meshes with the transmission gear 95a, and a relay transmission gear 98. The output gear 99 is supported by the planting / distribution transmission shaft 97 so as not to rotate relative to the planting / distribution transmission shaft 97.

  The transmission from the speed change output shaft 96a to the longitudinal feed drive shaft 72 is relative to the transmission gear 100 that is provided so as not to rotate relative to the speed change output shaft 96a, the output gear 101 engaged with the transmission gear 100, and the output gear 101. This is performed by an output shaft 102 that is impossible and a connecting shaft 103 that interlocks and connects the output shaft 102 to the longitudinal feed drive shaft 72.

  The transverse transmission speed change mechanism 96 includes four pairs of gears provided across a distribution transmission shaft 95 as an input shaft and a transmission output shaft 96a, and the driving force of the distribution transmission shaft 95 is rotated by the four gear pairs. The speed is changed to four different driving forces in four stages and transmitted to the speed change output shaft 96a. Accordingly, the lateral feed speed change mechanism 96 changes the lateral feed speed of the seedling platform 12 by the seedling platform lateral feed drive mechanism 60, and the seedling platform horizontal direction (mat-like seedling lateral width direction) of the seedling taken out by the seedling planting mechanism 11 is changed. ) To change the length.

  The lateral feed speed change mechanism 96 includes a speed change operation shaft 104 penetrating through the side wall portion of the feed case 16, and can change speed by sliding the speed change operation shaft 104 with a speed change lever 105 (see FIG. 4). That is, when the speed change operation shaft 104 is slid, the shifter 106 extended from the speed change operation shaft 104 slides the shift key 107, and the shift key 107 is on the side of the distribution transmission shaft in any one of the four gear pairs. These gears are switched from a state capable of relative rotation to the distribution transmission shaft 95 to a state in which relative rotation is impossible.

The feed case 16 will be described.
As shown in FIGS. 16, 17, 19, and 21, the feed case 16 includes a pair of left and right connecting seats 110 provided at the lower part on the front side, and is connected to the main frame 15 by the pair of left and right connecting seats 110. It is configured to

  That is, as shown in FIG. 19, the left connecting seat portion 110 includes a front seat portion 110 a and a rear seat portion 110 b that are arranged front and rear with a gap therebetween, and the front seat portion 110 a is provided on the upper surface portion of the main frame 15. The rear seat part 110 b is connected to the rear surface part of the main frame 15 by the connecting member 111, thereby being connected to the main frame 15. The connecting member 111 is connected to the rear seat portion 110b by a connecting bolt and the lower end portion is connected to the main frame 15 by a connecting bolt, thereby connecting the rear seat portion 110b and the main frame 15. To do.

  As shown in FIG. 21, the right connecting seat 110 includes a front seat 110 a and a rear seat 110 b positioned below the front seat 110 a, and the front seat 110 a is an upper surface portion of the main frame 15. The rear seat 110b is connected to the main frame 15 by being connected to the rear surface portion of the main frame 15 by the connection bolt.

  As shown in FIGS. 16, 17, and 19, the feed case 16 includes an input boss portion 112 and a support shaft mounting portion 113 provided in a front side portion arranged in the vertical direction of the machine body. 92 is configured to support the rolling support shaft 18 by the support shaft mounting portion 113. More specifically, the input boss portion 112 is configured to support the input shaft 92 so as to be relatively rotatable via a bear rig fitted to the input shaft 92, and penetrates the input shaft 92 so as to pass through the inside and outside of the feed case 16. It is comprised so that it may be located over. As shown in FIG. 16, the support shaft mounting portion 113 is configured such that a flange portion 18 a provided at the base portion of the rolling support shaft 18 is tightened and connected from the front side of the machine body by a plurality of connecting bolts 18 b, whereby the rolling support shaft 18. It is comprised so that it may support.

  As shown in FIG. 23, the reinforcing rib 114 is connected across the feed case inner surface side portion 113 a of the support shaft mounting portion 113 and the feed case inner surface side portion 112 a of the input boss portion 112.

  As shown in FIGS. 16 and 17, an oil supply cylinder portion 115 disposed on the lateral side of the input boss portion 112 is provided on the front surface portion of the feed case 16. As shown in FIG. 23, the lubrication cylinder portion 115 is formed in a hollow shape that allows the inside and outside of the feed case 16 to communicate with each other, and supplies the lubricating oil in the longitudinal direction of the machine body that supplies the lubricating oil from the outside to the inside of the feed case 16. A path 115a is formed. In a normal state, a removable plug 116 that closes the lubricating oil supply passage 115 a is attached to the outer end of the lubrication cylinder 115.

  As shown in FIGS. 17 and 24, above the right connecting seat portion 110 and between the connecting flange portion 140 provided on the feed case main body 16 </ b> A of the feed case 16 and the lubricating cylinder portion 115. Reinforcing ribs 117 project from the front surface of the feed case 16 to the front side of the body. The reinforcing rib 117 is connected across the oil supply cylinder portion 115 and the connecting flange portion 140.

  As shown in FIGS. 17, 21, and 22, the feed case 16 includes a pair of upper and lower guide mounting seats 118 extending laterally from the right side portion of the machine body, and the lever is supported by the pair of upper and lower guide mounting seats 118. The guide 119 is configured to be supported. More specifically, the pair of upper and lower guide mounting seats 118 is configured such that the left mounting leg 119a of the pair of left and right mounting legs 119a provided in the lever guide 119 is tightened and connected from the lateral direction of the machine body by the connecting bolt. Thus, the lever guide 119 is configured to be supported. The right mounting leg portion 119 a is configured to be supported by the main frame 15.

  The upper stay portion 120 is connected across the lower portion of the upper guide mounting seat portion 118, the upper portion of the lower guide mounting seat portion 118, and the lateral side portion of the feed case 16, and the lower guide mounting seat portion is connected. The lower stay portion 121 is connected to the lower portion of the 118 and the lateral side portion of the feed case 16 so that the pair of upper and lower guide mounting seat portions 118 are reinforced by the upper and lower stay portions 120 and 121. It is.

  That is, the upper guide mounting seat portion 118 is supported from below by the upper stay portion 120. The lower guide mounting seat portion 118 is supported from above by the upper stay portion 120 and supported from below by the lower stay portion 121. The upper and lower guide mounting seats 118 are supported by connection with the upper stay 120.

  The lever guide 119 has a planting depth adjusting lever 122 (see FIG. 3) that adjusts the seedling planting depth by the seedling planting mechanism 11 and the size of the seedlings that are taken out by the seedling planting mechanism 11 in the vertical feeding direction. This guides the adjustment lever 123 (see FIG. 3) and adjusts the planting depth adjustment lever 122 and the adjustment lever 123 in the adjustment position. The planting depth adjustment lever 122 extends from the rotation fulcrum shaft 125 (see FIG. 19) of the support arm 124 (see FIG. 2) that supports the rear end side of the grounding float 13 so as to be capable of moving up and down. The support arm 124 is swung by rotating the fulcrum shaft 125, and the mounting height of the grounding float 13 with respect to the planting device frame 14 is changed. As shown in FIG. 21, the rotation fulcrum shaft 125 is rotatably supported by a support member 127 extending from a support portion 126 (see FIG. 22) provided on the lateral side portion of the feed case 16.

  As shown in FIGS. 17 and 19, the feed case 16 includes a shift boss 128 that protrudes laterally from the lateral side on the left side behind the connecting seat 110, and the shift boss 128. Thus, the speed change operation shaft 104 of the lateral feed speed change mechanism 96 is slidably supported. The speed change boss portion 128 is inserted through the speed change operation shaft 104 and is supported so as to be positioned inside and outside the feed case 16.

  A reinforcing rib 129 extending in the longitudinal direction of the fuselage is provided between the shift boss 128 and the left connecting seat 110 so as to project from the lateral side on the left side of the feed case 16 in the lateral direction of the fuselage. The front end side of the reinforcing rib 129 is connected to the connecting seat portion 110, the rear end side of the reinforcing rib 129 is connected to the transmission boss portion 128, and the feed case 16 is reinforced by the reinforcing rib 129.

  As shown in FIGS. 17 and 19, the feed case 16 is provided with a pair of upper and lower sensor mounting seats 130 projecting leftward from the lateral side at the upper end side of the feed case 16 above the connecting seat 110. And the tilt sensor 131 is supported by a pair of upper and lower sensor mounting seats 130. More specifically, each sensor mounting seat 130 is configured to support the tilt sensor 131 by the mounting portion 131a provided in the tilt sensor 131 being tightened and connected from the lateral direction of the machine body by a connecting bolt.

  Reinforcing ribs 132 extending in the vertical direction of the fuselage are provided between the pair of upper and lower sensor mounting seats 130 so as to project outward from the lateral side wall of the feed case 16. The upper end side of the reinforcing rib 132 is connected to the upper sensor mounting seat portion 130, and the lower end side of the reinforcing rib 132 is connected to the lower sensor mounting seat portion 130. Support strength of the pair of upper and lower sensor mounting seats 130 by the feed case 16 is enhanced by the reinforcing ribs 132.

  The inclination sensor 131 is configured to detect the right / left inclination of the seedling planting device 10 and to output detection information to the rolling operation mechanism 133 (see FIG. 3). The rolling operation mechanism 133 includes an operation member (not shown) connected to the left and right ends of the seedling stage 12 via springs 134 and an electric motor 136 that operates the operation member, and is detected from the inclination sensor 131. Based on the information, the electric motor 136 is controlled, the operation member is operated so as to raise the descending side of the seedling table 12, and the right and left inclination of the seedling planting device 10 due to the transfer of the seedling table 12 is suppressed.

  As shown in FIGS. 17 and 21, the feed case 16 is provided with a seedling vertical feed boss 137 projecting laterally from the lateral side and is driven by a seedling vertical feed boss 137. The output shaft 102 to the mechanism 71 is configured to be rotatably supported. More specifically, the boss portion 137 is configured to support the output shaft 102 so as to be relatively rotatable via a bearing that is externally fitted to the output shaft 102, and is configured to be inserted through and supported by the output shaft 102. ing.

  A reinforcing rib 138 protrudes from the lateral side portion of the feed case 16 outwardly from the machine body between the boss portion 137 for vertically feeding the seedlings and the connecting seat portion 110. One end side of the reinforcing rib 138 is connected to the boss portion 137, and the other end side of the reinforcing rib 138 is connected to the connecting seat portion 110. The feed case 16 is reinforced by reinforcing ribs 138.

  FIG. 15 is a cross-sectional view of the feed case 16 in a developed state. As shown in FIG. 15, the feed case 16 is divided into a feed case main body 16 </ b> A that accommodates the lateral feed speed change mechanism 96 of the transmission mechanism 90, and a lid case portion 16 b that closes the opening of the feed case main body 16 </ b> A. It can be divided in the horizontal direction of the fuselage.

  As shown in FIG. 23, an annular connecting flange portion 140 is provided around the entire periphery of the opening of the feed case main body 16A, and the lid case portion 16B is provided at the peripheral portion of the lid case portion 16B as shown in FIGS. An annular connecting flange portion 141 is provided over the entire circumference, and the feed case body 16A and the lid case portion 16B are tightened and connected by a plurality of connecting bolts 142 in which the connecting flange portions 140 are arranged in the circumferential direction of the connecting flange portion. It is comprised so that it may be connected.

  The feed case 16 is configured in an oil bath structure so as to store lubricating oil therein, and a metal gasket 143 is interposed between the connecting flange portion 140 of the feed case main body 16A and the connecting flange portion 141 of the lid case portion 16B. It is configured to intervene.

  20, 23 and 24 are perspective views showing the feed case main body 16A. As shown in FIGS. 15, 20, 23, and 24, the feed case main body 16 </ b> A includes a feed case main portion 16 </ b> C that supports the input shaft 92 and accommodates the lateral feed speed change mechanism 96, and a rear lower portion from the feed case main portion 16 </ b> C. And a planting output case portion 16D that supports the relay transmission gear 98 and the output gear 99. The feed case main portion 16C includes a left connecting seat portion 110, a support shaft mounting portion 113 that supports the rolling support shaft 18, a boss portion 61a that supports the seedling horizontal feed shaft 61, a boss portion 128 that supports the speed change operation shaft 104, A sensor mounting seat part 130 and an oil supply cylinder part 115 are provided.

  The lid case portion 16B includes a right connecting seat portion 110, a guide mounting seat portion 118, and a boss portion 137 that supports the output shaft 102.

The connection flange portion 140 of the feed case body 16A and the connection flange portion 141 of the lid case portion 16B will be described.
As shown in FIGS. 15, 22, 23, and 24, the opening of the feed case main body 16A is formed across the feed case main portion 16C and the planting output case portion 16D, and the connecting flange portions 140 and 141 are Around the output gear 99, an arc flange portion 144 having an arc shape in the connecting direction of the connecting flange portions 140 and 141 is provided.

  In each of the connecting flange portions 140 and 141, the arc flange portion 144 includes three bolt holes among the plurality of bolt holes 145 that are arranged in the connecting flange portion circumferential direction in the entire connecting flange portions 140 and 141. 145a is provided. The arrangement pitch of the three bolt holes 145a provided in the arc flange portion 144 in the circumferential direction of the connecting flange is set to the arrangement pitch shown in FIG. A hole 146 shown in FIG. 18 is a pin hole for mounting a positioning pin.

That is, an array in which a straight line B passing through the center of a pair of adjacent bolt holes 145a among the three bolt holes 145a is positioned within the width of the arc flange portion 144 in the feed case inside / outside direction between the pair of bolt holes 145a. The pitch is set.
That is, compared with the straight line B positioned between the pair of bolt holes 145a and located outside the feed case with respect to the arc flange portion 144, the arrangement of the bolt holes 145a in the arc flange portion 144 in the circumferential direction of the connecting flange portion The pitch is configured to be small.

[Another Example]
(1) In the above-described embodiment, an example in which six seedling planting mechanisms 11 are provided has been described. However, five or less seedling planting mechanisms 11 or seven or more seedling planting mechanisms 11 may be provided.

(2) In the above-described embodiment, an example in which the seedling feeding body 62 is provided with the gap 62c may be performed without the gap 62c.

(3) In the above-described embodiment, an example in which the feed case 16 is configured in the oil bath structure and the metal gasket 143 is shown. However, instead of the oil bath structure, grease is used as lubricating oil, and the metal gasket 143 is replaced. Alternatively, a seal rubber may be employed.

(4) In the above-described embodiment, an example in which the arc flange portion 144 is provided with the three bolt holes 145a has been described, but four or more bolt holes may be provided.

  INDUSTRIAL APPLICABILITY The present invention can be used for a seedling planting apparatus equipped in a walking type rice transplanter as well as a seedling planting apparatus equipped in a riding type rice transplanter.

DESCRIPTION OF SYMBOLS 11 Seedling planting mechanism 12 Seedling mounting stand 15 Main frame 16 Feed case 16A Feed case main body 16B Cover case part 18 Rolling spindle 22 Support member 30 Rotating rotor 30b Rotor rotating shaft core 31 Planting arm 31c Arm rotating shaft core 31f Wall part 31r Wall part 32 Planting claw 34 Seedling extruding rod 35 Cylindrical case part 37 Boss part 41 Extrusion spring 42 Oscillating arm 44 Elastic body 46 Support shaft 47 Connecting rod 50 Lid member 50a Disk part 50b Skirt part 51 Washer member 51a Circle Plate part 51b Rubber plate part 53 Air vent hole 53a Screw part 54 Air vent plug 54a Mounting screw part 54b Operation part 60 Seedling table lateral feed drive mechanism 61 Seedling lateral feed shaft 62 Seedling feed body 62a Inner cylinder 62b Outer cylinder part 62c Cavity part 63 Support member 65 Lateral feed cam mechanism 68 Connection body 7 Seedling vertical feed drive mechanism 80 Feed shaft cover 81 Cover fastening portion 83 Connection seat portion 84 Connection bolt 90 Transmission mechanism 92 Input shaft 96 Lateral feed speed change mechanism 102 Output shaft 104 Speed change operation shaft 110 Connection seat portion 112 Input boss portion 112a Feed case Inner part (input boss part)
113 Supporting shaft mounting portion 113a Feed case inner part (supporting shaft mounting portion)
114 Reinforcement rib 115 Lubrication cylinder part 115a Lubricating oil supply path 117 Reinforcement rib 118 Guide attachment seat part 119 Lever guide 121 Stay part 128 Boss part 129 Reinforcement rib 130 Sensor attachment seat part 131 Inclination sensor 132 Reinforcement rib 137 Boss part 138 Reinforcement rib 140 Connecting flange portion 141 Connecting flange portion 143 Metal gasket 144 Arc flange portion 145a Bolt hole B Straight line D interval L1 interval length L2 cover fastening portion length L3 arrangement interval L4 arrangement interval

Claims (14)

A seedling lateral feed shaft that is extended so as to be rotationally driven from the feed case and whose extended end side is supported so as to be relatively rotatable by the support member;
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is detachably connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to a seedling mounting base, and includes a connecting body that interlocks and connects the seedling feeding body and the seedling mounting base,
A feed shaft cover that covers the seedling lateral feed shaft is attached over the cover fastening portion provided at one end of the seedling feed body and the feed case,
A feed shaft cover that covers the seedling lateral feed shaft is attached across the cover fastening portion provided at the other end of the seedling feed body and the support member,
The length of the gap between the cover fixing part of the one end and the connecting seat in the direction of moving the seedling feeding body, and the seedling feeding of the gap between the cover fixing part of the other end and the connecting seat The length in the moving direction is set to be longer than the length in the seedling feeder moving direction of the cover fastening part,
One end portion and the other end portion of the seedling feeding body are an inner cylinder portion that is fitted around the seedling lateral feed shaft, an outer cylinder portion that is positioned outside the inner cylinder portion and has the cover fixing portion, and the inner cylinder A seedling planting device comprising a gap formed between a portion and the outer cylinder portion. A seedling lateral feed shaft that is extended so as to be rotationally driven from the feed case and whose extended end side is supported so as to be relatively rotatable by the support member;
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is detachably connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to a seedling mounting base, and includes a connecting body that interlocks and connects the seedling feeding body and the seedling mounting base,
A feed shaft cover that covers the seedling lateral feed shaft is attached over the cover fastening portion provided at one end of the seedling feed body and the feed case,
A feed shaft cover that covers the seedling lateral feed shaft is attached across the cover fastening portion provided at the other end of the seedling feed body and the support member,
The length of the gap between the cover fixing part of the one end and the connecting seat in the direction of moving the seedling feeding body, and the seedling feeding of the gap between the cover fixing part of the other end and the connecting seat The seedling planting apparatus in which the length in the moving direction is set to be longer than the length in the seedling feeder moving direction of the cover fixing part. A seedling horizontal feed shaft extended from the feed case so as to be rotationally driven,
A seedling feeder that is rotatably supported on the seedling lateral feed shaft and is slidably fitted on the seedling lateral feed shaft;
A transverse feed cam mechanism that is provided across the seedling feed body and the seedling transverse feed shaft, and reciprocates the seedling feed body by the rotational force of the seedling transverse feed shaft;
One end side is connected to the connecting seat portion provided in the seedling feeding body, the other end side is connected to the seedling mounting table, and a connecting body that interlocks and connects the seedling feeding body to the seedling mounting table,
A pair of connecting bolts arranged in the circumferential direction of the seedling horizontal feed shaft on one end side of the connecting seat portion in the direction of moving the seedling feeding body, and the seedling feeding body movement of the connecting seat portion. Configured to be connected by a pair of connecting bolts arranged in the circumferential direction of the seedling transverse feed shaft at the other end side in the direction,
A seedling in which the arrangement interval of the pair of connection bolts in the one end side in the circumferential direction of the seedling transverse feed axis is different from the arrangement interval of the pair of connection bolts in the other end side in the circumferential direction of the seedling transverse feed axis Planting device. Provided with a feed case that receives driving force from the traveling machine body and distributes and transmits the input driving force to a plurality of seedling planting mechanisms,
The feed case is configured in an oil bath structure so as to store lubricating oil, and is configured to be divided into a feed case main body and a lid case portion in a lateral direction of the machine body,
The feed case main body and the lid case portion are connected to each other by tightening and connecting a plurality of connecting bolts arranged in the circumferential direction of the connecting flange portion in a connecting flange portion provided on each peripheral portion. Configure
A metal gasket is interposed between the pair of connecting flange portions to be tightened and connected,
Each of the connecting flange portions includes an arc-shaped arc flange portion when viewed in the connecting direction, and a plurality of bolt holes positioned side by side in the connecting flange portion circumferential direction on the arc flange portion,
The arrangement pitch of the plurality of bolt holes positioned in each arc flange portion in the circumferential direction of the connecting flange portion is such that a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the distance between the pair of bolt holes. A seedling planting apparatus which is set to an array pitch positioned within the width of the arc flange portion in the feed case inside and outside. Provided with a feed case that receives driving force from the traveling machine body and distributes and transmits the input driving force to a plurality of seedling planting mechanisms,
The feed case is configured to be split into a feed case main body and a lid case portion in the lateral direction of the fuselage,
The feed case main body and the lid case portion are connected to each other by tightening and connecting a plurality of connecting bolts arranged in the circumferential direction of the connecting flange portion in a connecting flange portion provided on each peripheral portion. Configure
Each of the connecting flange portions includes an arc-shaped arc flange portion when viewed in the connecting direction, and a plurality of bolt holes positioned side by side in the connecting flange portion circumferential direction on the arc flange portion,
The arrangement pitch of the plurality of bolt holes positioned in each arc flange portion in the circumferential direction of the connecting flange portion is such that a straight line passing through the center of a pair of adjacent bolt holes among the plurality of bolt holes is the distance between the pair of bolt holes. A seedling planting apparatus which is set to an array pitch positioned within the width of the arc flange portion in the feed case inside and outside. The seedling planting claw is driven so that the tip side of the seedling planting claw rotates and moves between the seedling mounting table and the lower part of the seedling mounting table. A planting arm to be transported down and planted in a farm scene;
A seedling extrusion rod that is supported by the planting arm so as to be slidable between a seedling extrusion position and a standby position, and that extrudes the seedling from the seedling planting claw, and
An extrusion spring that is mounted in a cylindrical case portion provided in a state of bulging out of the planting arm on the wall portion of the planting arm, and that slides the seedling extrusion rod to the extrusion position;
An air vent hole formed in a portion of the wall portion adjacent to the cylindrical case portion;
An air vent plug attached to the air vent hole and allowing air venting, and
The said air vent plug is a seedling planting device provided with an attaching screw part attached to a screw part provided in the air vent hole, and a knob-shaped operation part for rotating the air vent plug. The seedling planting claw is driven so that the tip side of the seedling planting claw rotates and moves between the seedling mounting table and the lower part of the seedling mounting table. A planting arm to be transported down and planted in a farm scene;
A seedling extrusion rod that is supported by the planting arm so as to be slidable between a seedling extrusion position and a standby position, and that extrudes the seedling from the seedling planting claw, and
An extrusion spring that slides the seedling extrusion rod to the seedling extrusion side;
A swing arm that is supported by the planting arm so as to be swingable, and that returns the seedling push rod to the standby position against the push spring;
An elastic body that is supported by the planting arm and receives the swinging arm and positions the seedling extrusion rod at the seedling extrusion position when the seedling extrusion rod is slid to the seedling extrusion side;
A hollow portion that opens toward the wall portion of the planting arm is formed in a portion of the elastic body opposite to the side where the swing arm is positioned with respect to a stopper portion that receives and acts on the swing arm. A seedling planting device. To the seedling planting mechanism that takes out the seedling from the seedling stand, transports the extracted seedling to the field scene and plant it
A rotating rotor that is driven to rotate around a rotor rotation axis that is lateral to the fuselage;
A pair of planting arms supported at both ends of the rotating rotor separately so as to be rotatable around an arm rotation axis parallel to the rotor rotation axis;
It is attached to the bosses of each of the pair of planting arms so as to be supported relative to each other so as to be relatively rotatable, and is coupled to each of the pivots so as not to be relatively rotatable, thereby restricting the rotation of the shaft relative to the planting arm. And a connecting rod
In each of the pair of planting arms, between the boss portion and the connecting rod, a lid member between the support shaft and the boss portion, and a washer member that presses the lid member against the boss portion. Equipped and
The lid member includes a disc portion that fits externally on the spindle, and a skirt portion that extends from a peripheral portion of the disc portion toward the boss portion, and an extended end side covers the boss portion.
The said washer member is a seedling planting apparatus provided with the metal disc part externally fitted to the said spindle, and the rubber plate part attached to the both sides | surfaces of a disc part. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
A power transmission mechanism that distributes the driving force input from the traveling machine to the feed case to a seedling planting mechanism, a seedling table lateral feed drive mechanism and a seedling vertical feed drive mechanism, and drive of the seedling platform lateral feed drive mechanism Contains a lateral feed speed change mechanism that changes speed,
On the rear side of the body of the connecting seat, there is a boss that protrudes laterally from the lateral side of the feed case and supports the shift operation shaft of the lateral feed speed change mechanism slidably inserted in the lateral direction of the body. Provided,
Reinforcing ribs extending in the longitudinal direction of the aircraft from the lateral side to the aircraft laterally outwardly project between the connecting seat portion and the boss portion,
A seedling planting apparatus in which a front end side of the reinforcing rib is connected to the connecting seat portion, and a rear end side of the reinforcing rib is connected to the boss portion. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
Above the connecting seat, a pair of upper and lower sensor mounting seats are provided that project from the lateral side of the feed case in the lateral direction of the body, and the tilt sensor is attached by a connecting bolt.
Reinforcing ribs extending in the vertical direction of the fuselage from the lateral side portion outward from the fuselage are projected between the pair of upper and lower sensor mounting seats,
The upper end side of the reinforcing rib is connected to the upper sensor mounting seat portion of the pair of upper and lower sensor mounting seat portions, and the lower end side of the reinforcing rib is the lower sensor mounting seat of the pair of upper and lower sensor mounting seat portions. Seedling planting device connected to the part. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
The feed case is configured to be split into a feed case main body and a lid case portion in the lateral direction of the fuselage,
Protruding from the front portion of the feed case body toward the front of the fuselage, and provided with an oil supply cylinder portion that forms a lubricating oil supply path with respect to the inside of the feed case,
Above the connecting seat portion, a reinforcing rib is provided from the front surface portion toward the front of the machine body, between a connecting flange portion provided on the feed case body for connecting the lid case portion, and the lubricating cylinder portion. Projecting
A seedling planting device in which one end side of the reinforcing rib is connected to the oil supply cylinder portion, and the other end side of the reinforcing rib is connected to the connecting flange portion. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
In the feed case, a transmission mechanism that distributes and transmits the driving force input from the traveling machine body to the seedling planting mechanism, the seedling table lateral feed drive mechanism and the seedling longitudinal feed drive mechanism is accommodated,
A boss portion is provided that protrudes laterally from the lateral side of the feed case and is supported in a relatively rotatable manner by inserting the output shaft of the transmission mechanism to the seedling longitudinal feed drive mechanism in the lateral direction of the aircraft.
Reinforcing ribs project from the lateral side portion outward from the fuselage between the connecting seat portion and the boss portion,
A seedling planting apparatus in which one end side of the reinforcing rib is connected to the connecting seat portion and the other end side of the reinforcing rib is connected to the boss portion. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
Protruding sideways from the lateral side of the feed case and provided with a guide mounting seat to which a lever guide is attached by a connecting bolt,
A seedling planting apparatus that is connected over the lateral side portion and a lower portion of the guide mounting seat portion and includes a stay portion that supports the guide mounting seat portion from below. A main frame facing the fuselage and a feed case connected to the main frame by a connecting seat,
A supporting shaft mounting portion on which a rolling support shaft facing the vehicle body is connected to a support member included in the traveling vehicle body so that the feed case can be rolled, and a front and rear body device that inputs driving force from the traveling vehicle body to the feed case. An input boss part is inserted in the front part of the feed case to support the relative rotation by inserting the input shaft in the direction,
A seedling planting device in which a reinforcing rib is connected across a feed case inner portion of the support shaft mounting portion and a feed case inner portion of the input boss portion.

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