JP6957326B2 - Porting machine - Google Patents

Description

The present invention relates to a transplanter for planting seedlings in a field.

Conventionally, a transplant machine disclosed in Patent Document 1 is known.
The transplanting machine disclosed in Patent Document 1 includes a planting tool for planting seedlings in ridges and a soil removing means for removing soil adhering to the planting tool.

Japanese Unexamined Patent Publication No. 2016-171766

According to the transplanting machine disclosed in Patent Document 1, the soil adhering to the planting tool can be removed by the soil removing means, but since the soil removing means is configured by combining a large number of members, the soil is planted. A large space was required to provide a means of removing soil near the tool.
In view of the prior art, the present invention provides a porting machine capable of installing a member for removing soil adhering to a planting tool in a small space.

The transplanting machine according to one aspect of the present invention includes a machine body, a planting tool for planting seedlings in ridges by an up-and-down operation, a grounding member that touches the upper surface of the ridges, and the grounding member above or below the machine body. A support member that swingably supports the support member, a ridge height detection member that is connected to the support member and detects the height of the ridge based on the swing of the support member, and a plant that is attached to the support member and is planted. The grounding member includes a soil removing member that scrapes off the soil adhering to the surface of the planting tool when the attachment is raised and lowered, and the grounding member is a one-sided grounding member arranged on one side of the planting tool in the body width direction. The planting tool includes a other grounding member arranged on the other side in the machine body width direction of the planting tool, and the planting tool has a first component on the front side and a second component on the rear side. The soil removing member includes a front side soil removing member arranged on the front side of the planting tool and a rear side soil removing member arranged on the rear side of the planting tool, and the front side soil removing member is said to be said. The soil adhering to the surface of the first component is scraped off, the rear soil removing member scrapes off the soil adhering to the surface of the second component , and the support member rotatably supports the grounding member. The swing arm has a swing arm that swings the support arm upward or downward with respect to the machine body, and the upper end portion of the swing arm has the ridge height. It is attached to a shaft body that is arranged in front of the detection member and the front soil removing member and is supported by the front portion of the machine body and extends in the width direction of the machine body, and swings by rotating the shaft body around the axis. The front side soil removing member is arranged on the shaft body side and attached to the support arm, and the rear side is arranged on the side opposite to the shaft body and abuts on the surface of the first component portion on the rear side. A notch for scraping off the soil is formed, and the notch extends rearward from the front of the first component toward the first component, and the front soil removing member is grounded on one side in the width direction of the machine body. It is located between the member and the other grounding member, the position of the notch in the front-rear direction overlaps with the one grounding member and the other grounding member, and the overall vertical position is the above. It overlaps the grounding member on one side and the grounding member on the other side .

Further, the rear soil removing member extends forward from the rear of the second component toward the second component, and the front soil removing member and the rear soil removing member are positioned in the vertical direction. Are staggered.
Further, a chair on which the worker sits and a deck on which the worker rests his / her feet are provided, and the rear soil removing member is attached to a connecting member connected to the front portion of the deck.
Further, the grounding member includes a plurality of grounding members provided side by side in the airframe width direction, and the support member includes a plurality of support members provided side by side in the airframe width direction and adjacent to each other in the airframe width direction. A connecting member for connecting the support members is provided.
Further, the support arm rotatably supports the one grounding member and the other grounding member, and the front soil removing member is attached to the support arm.

Further, the support arm connects the one arm that rotatably supports the one grounding member, the other arm that rotatably supports the other grounding member, and the one arm and the other arm, and swings the other arm. It has a connecting arm connected to the arm, and the front side soil removing member is attached to the connecting arm.

According to the above-mentioned transplanting machine, since the soil removing member is attached to the support member that supports the grounding member, the soil removing member can be provided as an attachment to the ridge height detecting mechanism. Therefore, the soil removing member can be provided in a small space without requiring a dedicated space for providing the soil removing member. In addition, the soil can be reliably scraped off while simplifying the configuration of the soil removing member.

It is a top view of the transplant part. It is a side view of a transplant part. It is a schematic front view of a transplant part. It is a perspective view of the planting device. It is a perspective view which shows the opening / closing mechanism and the interlocking mechanism. It is a side view which shows the opening / closing mechanism and the support mechanism. It is a top view which shows the arrangement of a part of a tube in a transplant part. It is a top view which shows the whole arrangement of the tube in a transplant part. It is a side view which shows the state which the tube is attached to the attachment part of the guide member. It is a top view of the seedling supply device. It is a front sectional view of the seedling supply device. It is a perspective view which shows the grounding member, the support member, and the ridge height detecting member. It is a rear view which shows the grounding member, the support member, and the ridge height detecting member. It is a side view which shows the grounding member, the support member, and the ridge height detecting member. It is a perspective view which shows the peripheral structure of the soil removal member. It is a top view which shows the soil removal member, the grounding member, the support member, and the ridge height detection member. It is a partial cross-sectional side view which shows the action of the soil removal member. It is a front perspective view which shows the rear wheel, the support mechanism of a chair, and a protective cover. It is a rear perspective view which shows the rear wheel, the support mechanism of a chair, and a protective cover. It is a front perspective view which shows the support mechanism of a chair. It is a rear perspective view which shows the support mechanism of a chair. It is a figure which shows the operation of the swing part of the 2nd protective cover with the raising and lowering of an airframe. It is a perspective view which shows the protective cover and scraper. It is a bottom view which shows a scraper, a support stay, and a wheel cover. It is a rear perspective view which shows the elevating step, the deck, and the operation pedal. It is a rear perspective view which shows the state which the posture is changed from the 2nd posture to the 1st posture of an elevating step. FIG. 5 is a plan view showing a state in which the chair and the rear wheels are brought closer to the aircraft with the elevating step as the second posture. It is a top view which shows the arrangement of an operation pedal and a deck. It is a side view of a transplanting machine, and shows the state which the machine body was lowered with respect to a wheel. It is a side view of the transplant machine, and shows the state which raised the machine with respect to a wheel. It is a top view of a transplant machine, and shows a state in which the chair and the rear wheel are separated from the machine body with the elevating step as the first posture.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
30 and 31 show a transplanting machine 1 for planting seedlings such as onions in a field (ridge) while traveling in the field. FIG. 30 is a side view of the transplanting machine 1, and FIG. 31 is a plan view of the transplanting machine 1.
In the embodiment of the present invention, the traveling direction of the transplanter 1 at the time of planting seedlings (direction of arrow A1 in FIGS. 30 and 31) is forward, and the opposite side of the traveling direction (direction of arrow A2 in FIGS. 30 and 31) is backward. , The left side in the traveling direction (direction of arrow B1 in FIG. 31) will be described as the left side, and the right side in the direction of travel (direction of arrow B2 in FIG. 31) will be described as the right side.

Further, as shown in FIG. 31, the horizontal direction, which is a direction orthogonal to the front-rear direction K1, will be described as the machine body width direction (width direction of the machine body 2) K2. The direction from the central portion in the width direction of the transplanting machine 1 (airframe 2) toward the right portion or the left portion will be described as the outer side of the machine body (outer side in the width direction of the machine body). In other words, the outside of the machine body is the direction K2 in the body width direction and away from the center in the width direction of the transplanting machine 1 (body 2). The direction opposite to the outside of the fuselage will be described as the inside of the fuselage (inside in the width direction of the fuselage). In other words, the inside of the machine is the direction K2 in the width direction of the machine and is closer to the center in the width direction of the body 2.

As shown in FIGS. 30 and 31, the transplanting machine 1 has a machine body 2. A prime mover (engine) E1 is mounted on the rear part of the airframe 2. Further, the airframe 2 has a mission case M1 to which power from the prime mover E1 is transmitted. Further, at the rear part of the machine body 2, a steering handle 5 that is gripped by an operator when walking the transplanting machine 1 is provided.
The transplanting machine 1 includes wheels that support the body 2 so as to be able to travel. The wheels include front wheels 3L and rear wheels 4L arranged on the left side of the airframe 2, and front wheels 3R and rear wheels 4R arranged on the right side of the airframe 2. The front wheels 3L and 3R are wheels that rotate freely, and the rear wheels 4L and 4R are drive wheels that are rotationally driven by transmitting power from the mission case M1. The wheels (front wheels 3L, 3R, rear wheels 4L, 4R) rotate in contact with each other between adjacent ridges (ridges) during transplanting work.

A front wheel support arm 6L is provided on the left side of the airframe 2. The upper portion of the front wheel support arm 6L is rotatably supported by the airframe 2 around a horizontal axis (an axial center extending in the airframe width direction K2). The front wheel 3L is rotatably attached to the lower part of the front wheel support arm 6L. A front wheel support arm 6R is provided on the right side of the airframe 2. The upper portion of the front wheel support arm 6R is rotatably supported by the airframe 2 around the horizontal axis. The front wheels 3R are rotatably attached to the lower part of the front wheel support arm 6R.

A wheel support 7L is provided on the left side of the airframe 2. The upper portion of the wheel support 7L is rotatably supported by the airframe 2 around a horizontal axis. A rear wheel 4L is rotatably attached to the lower part of the wheel support 7L. A wheel support 7R is provided on the right side of the airframe 2. The upper portion of the wheel support 7R is rotatably supported by the airframe 2 around a horizontal axis. The rear wheel 4R is rotatably attached to the lower part of the wheel support 7R.

The front wheel support arms 6L and 6R and the wheel supports 7L and 7R can swing up and down, and can be driven to swing by a hydraulic cylinder (not shown). As a result, the front wheels 3L and 3R and the rear wheels 4L and 4R move up and down relative to the aircraft 2. By simultaneously raising and lowering the front wheels 3L and 3R and the rear wheels 4L and 4R with respect to the body 2, the body 2 moves up and down with respect to the ground.
Specifically, when the front wheel support arms 6L and 6R are swung rearward and the wheel supports 7L and 7R are swung forward, the distance between the front wheels 3L and 3R and the rear wheels 4L and 4R in the front-rear direction becomes smaller. Therefore, the wheels (front wheels 3L, 3R and rear wheels 4L, 4R) descend relative to the airframe 2, and the airframe 2 rises with respect to the ground (see FIG. 30). On the other hand, when the front wheel support arms 6L and 6R are swung forward and the wheel supports 7L and 7R are swung rearward, the distance between the front wheels 3L and 3R and the rear wheels 4L and 4R increases in the front-rear direction. Therefore, the wheels (front wheels 3L, 3R and rear wheels 4L, 4R) rise relative to the airframe 2, and the airframe 2 descends with respect to the ground (see FIG. 29).

The hydraulic cylinders (hereinafter referred to as "elevating cylinders") that swing drive the front wheel support arms 6L and 6R and the wheel supports 7L and 7R are provided with wheels (not shown) together with an elevating control valve (not shown) that controls the operation of the elevating cylinder. It constitutes an elevating mechanism (hereinafter referred to as "airframe elevating mechanism") that elevates and elevates the body 2 relative to the front wheels 3L, 3R and the rear wheels 4L, 4R).
The transplanting machine 1 has a transplanting unit 11 for planting seedlings in a field and a seedling supply unit 12 for supplying seedlings to the transplanting unit 11. The transplanting unit 11 and the seedling supply unit 12 are provided in the machine body 2. The transplant portion 11 is provided at the front portion of the machine body 2. The seedling supply unit 12 is provided above the machine body 2 from the front part to the rear part. The seedling supply unit 12 has a first seedling supply device 12L provided on the left side of the machine body 2 and a second seedling supply device 12R provided on the right side of the machine body 2.

A first chair (chair) 13L is provided on one side (left side) of the machine body 2, and a second chair (chair) 13R is provided on the other side (right side) of the machine body 2. The first chair (chair) 13L is arranged on the side (left side) of the first seedling supply device 12L, and is provided on the upper side of the deck 10L. The second chair 13R is arranged on the side (right side) of the second seedling supply device 12R, and is provided on the upper side of the deck 10R. The decks 10L and 10R are parts on which the worker rides, and are parts on which the worker who sits on a chair (first chair 13L, second chair 13R) and supplies seedlings puts his / her feet.

The first chair 13L and the second chair 13R are chairs on which a worker who supplies seedlings to the seedling supply unit 12 sits. The transplanting machine 1 is a riding-type transplanting machine 1 in which an operator sitting on the first chair 13L and / or the second chair 13R can perform operations such as steering during planting work. The worker sits on the first chair 13L and / or the second chair 13R facing the inside of the machine (facing the seedling supply unit 12 side). When a worker sits on both the first chair 13L and the second chair 13R, for example, the worker of the first chair 13L supplies the seedlings to the first seedling supply device 12L, and the worker of the second chair 13R is the first. 2 Seedlings are supplied to the seedling supply device 12R.

Next, the first seedling supply device 12L and the second seedling supply device 12R will be described with reference to FIGS. 10 and 11. Since the first seedling supply device 12L and the second seedling supply device 12R have the same structure, the first seedling supply device 12L will be described, and the description of the second seedling supply device 12R will be omitted.
The first seedling supply device 12L has seedling supply cups 14A and 14B in which seedlings are supplied from above by an operator. As shown in FIG. 11, the seedling supply cups 14A and 14B have a tubular cup body 15 having an upper and lower opening, and a bottom lid 16 that rotatably closes the bottom opening of the cup body 15. The seedling supply cups 14A and 14B can hold the seedlings with the bottom lid 16 closed, and can discharge the seedlings downward when the bottom lid 16 is opened.

As shown in FIG. 10, the seedling supply cups 14A and 14B are arranged in a loop at regular intervals so as to exhibit a long oval shape in the front-rear direction K1 in a plan view. The seedling supply cups 14A and 14B are movable along this oval-shaped cup arrangement path (transfer path).
The seedling supply cups 14A and 14B are the first cup 14A for dropping and discharging the seedlings at the first position X1 on the outer side of the machine body in the front part of the cup placement path, and the seedling supply cups 14A and 14B on the inner side of the machine body in the front part of the cup placement path. The second cup 14B, which drops and discharges the seedlings at the second position X2, is arranged alternately along the cup arrangement path.

In the first seedling supply device 12L, the seedling supply cups 14A and 14B are orbitally transferred along the cup arrangement path in the direction indicated by the arrow Y1. In the second seedling supply device 12R, the seedling supply cups 14A and 14B are orbitally transferred along the cup arrangement path in the direction indicated by the arrow Y2.
The bottom lid 16 is restricted from opening by a regulating member, and when the first cup 14A is located at the first position X1 and the second cup 14B is located at the second position X2, the bottom lid 16 is separated from the regulating member and opened.

The first seedling supply device 12L includes a drive sprocket 18 arranged at the rear portion on the inner peripheral side of the cup arrangement path, a driven sprocket 19 arranged at the front portion on the inner peripheral side of the cup arrangement path, and these sprockets 18, 19. It has an endless transfer chain 20 wound over. A connecting portion 21 is provided at the lower part of the cup body 15, and the connecting portion 21 is connected to the transfer chain 20.

Therefore, the transfer chain 20 is driven by the drive sprocket 18, so that the seedling supply cups 14A and 14B are intermittently transferred.
As shown in FIGS. 30 and 31, the seedling supply unit 12 has a support frame 22 that supports the first seedling supply device 12L and the second seedling supply device 12R. The support frame body 22 is a front frame material 22F and a rear frame material 22B. It has a left frame material 22L, a right frame material 22R, and a center frame material 22M. The front frame material 22F is arranged in the front part of the seedling supply unit 12, and extends in the width direction of the machine body in front of the first seedling supply device 12L and the second seedling supply device 12R. The rear frame material 22B is arranged at the rear of the seedling supply unit 12, and extends in the width direction of the machine body behind the first seedling supply device 12L and the second seedling supply device 12R. The left frame material 22L is arranged on the left side of the seedling supply unit 12, and extends in the front-rear direction on the left side of the first seedling supply device 12L and the second seedling supply device 12R. The right frame material 22R is arranged on the right side of the seedling supply unit 12, and extends in the front-rear direction on the right side of the first seedling supply device 12L and the second seedling supply device 12R. The central frame member 22M extends in the front-rear direction at the central portion (between the first seedling supply device 12L and the second seedling supply device 12R) in the width direction of the machine body. The central frame member 22M connects the central portion of the front frame member 22F in the airframe width direction and the central portion of the rear frame member 22B in the airframe width direction.

As shown in FIGS. 30 and 31, a handrail 90 is attached to the rear frame member 22B of the support frame body 22. The handrail 90 extends in the width direction of the machine body along the rear frame member 22B. The handrail 90 has a grip portion 91 and a connecting portion 92. The grip portion 91 includes a first grip portion 91L and a second grip portion 91R. The first grip portion 91L is provided on the left side of the machine body 2. The second grip portion 91R is provided on the right side of the machine body 2. The connecting portion 92 extends in the width direction of the machine body behind and below the rear frame member 22B, and connects the first grip portion 91L and the second grip portion 91R. The first grip portion 91L extends upward from one end (left end) of the connecting portion 92 in the body width direction. The first grip portion 91L shifts to the outside (left side) of the machine body as it extends upward. The second grip portion 91R extends upward from the other end (right end) of the connecting portion 92 in the body width direction. The second grip portion 91R shifts to the outside (right side) of the machine body as it extends upward. The first grip portion 91L and the second grip portion 91R are located above the support frame body 22. The first grip portion 91L is located closer to the inside of the machine (to the right) than the left end portion of the support frame body 22. The second grip portion 91R is located closer to the inside of the machine (to the left) than the right end portion of the support frame body 22.

The first grip portion 91L is a portion to be gripped by hand when an operator gets on and off the first chair 13L. The second grip portion 91R is a portion that the operator grips by hand when getting on and off the second chair 13R. The first grip portion 91L is provided behind the first chair 13L. The second grip portion 91R is provided behind the second chair 13R. As a result, the operator heading for the first chair 13L from the rear of the machine body 2 can grip the first grip portion 91L and sit on the first chair 13L. Further, an operator heading for the second chair 13R from the rear of the machine body 2 can grip the second grip portion 91R and sit on the second chair 13R. The first grip portion 91L may be provided in front of the first chair 13L, and the second grip portion 91R may be provided in front of the second chair 13R.

The seedling supply unit 12 is provided with an operation lever 93 capable of blocking power transmission from the prime mover E1 to the rear wheels (wheels) 4L and 4R. The operation lever 93 projects upward from the rear portion of the central frame member 22M. The operating lever 93 is a lever for operating the main clutch capable of allowing or blocking power transmission from the prime mover E1 to the rear wheels (wheels) 4L, 4R, the transplanting section 11, and the seedling supply section 12. For example, when a problem occurs during work, the worker seated on the first chair 13L or the second chair 13R reaches out and operates the operation lever 93 to operate the rear wheel (wheel) from the prime mover E1. It is possible to cut off the power transmission to the 4L, 4R, the transplanting section 11, and the seedling supply section 12.

Next, the transplanted portion 11 will be described in detail with reference to FIGS. 1 to 6.
As shown in FIGS. 1 and 2, the transplantation unit 11 has a transplantation frame 23.
The transplant frame 23 has a main frame 24, a first mounting member 25L, a second mounting member 25R, and a plurality of frame materials (upper frame material 27, lower frame material 28, front frame material 29).

The main frame 24 is attached to the front portion of the machine body 2. The central portion of the main frame 24 in the width direction K2 coincides with the central portion of the main frame 2 in the width direction K2. The first mounting member 25L is fixed to the lower part of the left side of the main frame 24 and is fixed to the front part of the deck 10L. The second mounting member 25R is fixed to the lower part of the right side of the main frame 24 and is fixed to the front part of the deck 10R.

The rear portion 27a of the upper frame material 27 extends forward from the upper portion of the main frame 24. The front portion 27b of the upper frame member 27 extends downward from the front end of the rear portion 27a in an inclined direction that shifts downward as it goes forward. The lower frame material 28 is fixed to the machine body 2 below the main frame 24 and extends forward from the body body 2. The upper frame material 27 and the lower frame material 28 are located at the center of the airframe in the width direction K2.

The front frame material (front frame) 29 is located at the front end portion of the upper frame material 27 and the lower frame material 28, and extends in the body width direction K2. The front end portions of the upper frame member 27 and the lower frame member 28 are fixed to the central portion of the front frame member 29.
As shown in FIGS. 1 and 2, the transplant portion 11 is provided with a drive shaft 31 that is rotationally driven around a horizontal axis. The drive shaft 31 is formed of, for example, a hexagonal bar. The drive shaft 31 is provided so as to extend in the body width direction K2 in front of the lower part of the main frame 24. A shaft support member 32 is provided at the center of the main frame 24 in the body width direction K2. The drive shaft 31 is inserted through the shaft support member 32, and its central portion is rotatably supported by the shaft support member 32 via a bearing member.

The power from the transmission case M1 is transmitted to the drive shaft 31 via the power transmission mechanism 34 to the central portion in the axial direction. One end (left end) of the drive shaft 31 is located in front of the first mounting member 25L. The other end (right end) of the drive shaft 31 is located in front of the second mounting member 25R.
As shown in FIGS. 1 to 3, the transplant portion 11 has a first planting device 36L and a second planting device 36R. The first planting device 36L is arranged in front of the left side of the main frame 24 and on the left side of the upper frame material 27 and the lower frame material 28. The second planting device 36R is arranged in front of the right side of the main frame 24 and on the right side of the upper frame material 27 and the lower frame material 28.

As shown in FIGS. 1 to 4, the first planting device 36L has a plurality of planting tools (first planting tool 37L, third planting tool 38L) for planting seedlings in the field. The plurality of planting tools are supported by the first transmission body 39L so as to be able to move up and down via the first elevating mechanism 40L and the first support 41L. The first planting tool 37L and the third planting tool 38L move up and down at the same time, the seedlings are supplied at the ascending position, the seedlings are lowered while holding the seedlings, and the seedlings are rushed into the field (ridge) and opened at the descending position. As a result, a planting hole is formed in the field, and seedlings are released and planted in the planting hole.

The second planting device 36R also has a plurality of planting tools (second planting tool 37R, fourth planting tool 38R) for planting seedlings in the field. The plurality of planting tools are supported by the second transmission body 39R so as to be able to move up and down via the second elevating mechanism 40R and the second support body 41R. The second planting tool 37R and the fourth planting tool 38R also operate in the same manner as the first planting tool 37L and the third planting tool 38L, and seedlings are planted in the field. Further, the second planting tool 37R and the fourth planting tool 38R are lowered when the first planting tool 37L and the third planting tool 38L are raised.

As shown in FIGS. 1 and 3, a plurality of planting tools (first planting tool 37L, second planting tool 37R, third planting tool 38L, fourth planting tool 38R) are arranged in the width direction of the machine body. They are arranged side by side. The first planting tool 37L plants seedlings in one of the adjacent ridges. The second planting tool 37R plants seedlings in the other ridge of the adjacent ridges. The third planting tool 38L is arranged on the opposite side (left side) of the first planting tool 37L from the second planting tool 37R. The fourth planting tool 38R is arranged on the opposite side (right side) of the second planting tool 37R from the first planting tool 37L.

In the present embodiment, the transplanting machine 1 is a four-row planting transplanting machine in which two seedlings planted by the first planting device 36L and two seedlings planted by the second planting device 36R are in the front-rear direction. It is a transplanting machine for staggered planting that is misaligned with K1.
As shown in FIGS. 1 and 2, the first transmission body 39L and the second transmission body 39R are devices for transmitting the driving force of the drive shaft 31. The first transmission body 39L is arranged on one end side of the drive shaft 31. The second transmission body 39R is arranged on the other end side of the drive shaft 31 so as to face the first transmission body 39L in the body width direction K2.

The first transmission body 39L has a support case 43L and a transmission mechanism 44L provided on the support case 43L. In the support case 43L, the base portion (base portion of the first transmission body 39L) 42L is fixed to the front surface of the first mounting member 25L by bolts or the like, and the support case 43L has a forward protruding shape from the first mounting portion 25L. Further, the base portion 42L is attached to the first attachment member 25L so that the position can be changed in the body width direction K2 (for example, the position can be changed to two positions). Therefore, the position of the first transmission body 39L (first planting device 36L) can be changed in the axial direction of the drive shaft 31 at one end of the drive shaft 31.

The transmission mechanism 44L transmits the power of the drive shaft 31 to the first elevating mechanism 40L. The transmission mechanism 44L is rotatably provided on a first sprocket 46 attached to one end of the drive shaft 31 via a bearing member 45 and a transmission shaft 49 provided on the front portion of the support case 43L. It has a sprocket 47 and a chain 48 wound around the first sprocket 46 and the second sprocket 47. The bearing member 45 can rotate integrally with the drive shaft 31 and can move in the axial direction.

The tip end side of the support case 43L (first transmission body 39L) is connected to the left side portion of the front frame member 29 by the first connecting member (side frame) 50L. The rear portion of the first connecting member 50L is fixed to the tip end side of the support case 43L. The front portion of the first connecting member 50L is attached to the mounting stay 35L fixed to the front frame member 29 by bolts or the like so that the position can be adjusted in the body width direction K2. The first connecting member (side frame) 50L extends rearward from the outer side (left side) of the front frame 29.

Since the second transmission body 39R has the same configuration as the first transmission body 39L, the description thereof will be omitted. The second transmission body 39R also has a support case 43R and a transmission mechanism 44R provided on the support case 43R. The support case 43R has a base portion (base portion of the second transmission body 39R) 42R fixed to the front surface of the second mounting member 25R so as to be repositionable in the body width direction K2 by bolts or the like. Therefore, the position of the second transmission body 39R (second planting device 36R) can be changed in the axial direction of the drive shaft 31 at the other end of the drive shaft 31. The transmission mechanism 44R transmits the power of the drive shaft 31 to the second elevating mechanism 40R. The transmission mechanism 44R is configured in the same manner as the transmission mechanism 44L.

The tip end side of the support case 43R (second transmission body 39R) is connected to the left side portion of the front frame member 29 by the second connecting member (side frame) 50R. The rear portion of the second connecting member 50R is fixed to the tip end side of the support case 43R. The front portion of the second connecting member 50R is attached to the mounting stay 35R fixed to the front frame member 29 by bolts or the like so that the position can be adjusted in the body width direction K2. The second connecting member (side frame) 50R extends rearward from the outer side (right portion) of the front frame 29.

That is, the frame body is composed of the first connecting member 50L, the second connecting member 50R, the main frame 24, the first mounting member 25L, the second mounting member 25R, the support case 43L, the support case 43R, and the front frame material 29. There is. As a result, the first planting device 36L and the second planting device 36R are arranged in the frame and protected.
As shown in FIG. 1, the first elevating mechanism 40L and the second elevating mechanism 40R are arranged side by side in the direction along the drive shaft 31 (machine width direction K2). The first elevating mechanism 40L is arranged in the front part of the first transmission body 39L toward the inside of the machine. The first elevating mechanism 40L includes a first rotation case 51 rotatably supported by a support case 43L via a transmission shaft 49, and a second rotation rotatably supported on the free end side of the first rotation case 51. It has a case 52 and. The first support 41L is supported on the free end side of the second rotating case 52, and the first planting tool 37L and the third planting tool 38L are attached to the first support 41L. The rear portion of the first support 41L is suspended (upwardly urged) by a spring (not shown).

In the first elevating mechanism 40L, the first rotating case 51 is rotationally driven by the transmission shaft 49, and the second rotating case 52 is in the opposite direction to the first rotating case 51 in conjunction with the rotation of the first rotating case 51. A power transmission mechanism is provided in the first rotating case 51 and the second rotating case 52 so as to rotate in the first rotating case 51 and the second rotating case 52. When the first rotating case 51 is rotationally driven, the first support 41L moves up and down, and the first planting tool 37L and the third planting tool 38L move up and down accordingly. That is, the first elevating mechanism 40L is supported by the first transmission body 39L, and the power of the first transmission body 39L raises and lowers the first planting tool 37L and the third planting tool 38L.

The second elevating mechanism 40R is arranged in the front part of the second transmission body 39R toward the inside of the machine. The second elevating mechanism 40R includes a first rotation case 51 rotatably supported by the support case 43R via a transmission shaft 49, and a second rotation rotatably supported on the free end side of the first rotation case 51. It has a case 52 and. The second support 41R is supported by the second rotating case 52, and the second planting tool 37R and the fourth planting tool 38R are attached to the second support 41R.

The second elevating mechanism 40R also has the same configuration as the first elevating mechanism 40L and operates in the same manner. In the second elevating mechanism 40R, the second support 41R moves up and down by rotationally driving the first rotating case 51, whereby the second planting tool 37R and the fourth planting tool 38R move up and down. That is, the second elevating mechanism 40R is supported by the second transmission body 39R and raises and lowers the second planting tool 37R and the fourth planting tool 38R by the power of the second transmission body 39R.

As shown in FIGS. 1 and 4, the first support 41L is arranged on the side of the first elevating mechanism 40L toward the inside of the machine. The first support 41L connects the first member 53L that supports the first planting tool 37L, the second member 54L that supports the third planting tool 38L, and the first member 53L and the second member 54L. It has a plurality of connecting members 55L. The first member 53L and the second member 54L are arranged at intervals in the body width direction K2. The plurality of connecting members 55L are arranged between the first member 53L and the second member 54L. The first planting tool 37L is arranged on the rear side of the first member 53L toward the inside of the machine. The third planting tool 38L is arranged on the outer side of the fuselage at the rear of the second member 54L.

As shown in FIGS. 1 and 4, the second support 41R is arranged on the side of the second elevating mechanism 40R toward the inside of the machine. The second support 41R connects the first member 53R that supports the second planting tool 37R, the second member 54R that supports the fourth planting tool 38R, and the first member 53R and the second member 54R. It has a plurality of connecting members 55R. Since the configurations of the first member 53, the second member 54, and the plurality of connecting members 55R are the same as those of the first support 41L, the description thereof will be omitted. The second planting tool 37R is arranged on the rear side of the first member 53R toward the inside of the machine. The fourth planting tool 38R is arranged on the outer side of the fuselage at the rear of the second member 54R.

As shown in FIG. 6, the first planting tool 37L is supported by the first member 53L of the first support 41L by the first support mechanism 56L so as to be openable and closable in the front-rear direction. With reference to FIG. 6, the second planting tool 37R, the third planting tool 38L, and the fourth planting tool 38R will also be described. The second planting tool 37R is the first member 53R of the second support 41R. It is supported by a second support mechanism 56R so that it can be opened and closed back and forth. The third planting tool 38L is supported by the second member 54L of the first support 41L by a third support mechanism 57L so as to be openable and closable in the front-rear direction. The fourth planting tool 38R is supported by the second member 54R of the second support 41R so as to be openable and closable back and forth by the fourth support mechanism 57R.

Since the structures of the first planting tool 37L to the fourth planting tool 38R are the same, the structure of the first planting tool 37L will be described as a representative, and the second planting tool 37R to the fourth planting tool 38R will be described. The description is omitted.
As shown in FIGS. 5 and 6, the first planting tool 37L has a first component 58 on the front side and a second component 59 on the rear side. When the first planting tool 37L is closed (the first component 58 and the second component 59 overlap each other in the front-rear direction K1), the first planting tool 37L has an upward opening shape and a shape that tapers downward in a side view. It is presented. Further, the first component 58 and the second component 59 are curved in a substantially arc shape in a plan view, and the open side (concave side) is arranged so as to face each other. The first planting tool 37L is opened when the first component 58 and the second component 59 are separated from each other in the front-rear direction K1.

The first mounting bracket 61 is fixed to the front side of the upper part of the first component 58. A second mounting bracket 62 is fixed to the rear side of the upper part of the second component 59.
Since the structures of the first support mechanism 56L to the fourth support mechanism 57R are the same, the structure of the first support mechanism 56L will be described as a representative, and the description of the second support mechanism 56R to the fourth support mechanism 57R will be omitted.

As shown in FIGS. 5 and 6, the first support mechanism 56L includes a first swing member 63, a second swing member 64, a first attachment 65, and a second attachment 66. The upper front portion of the first swing member 63 is rotatably supported by the first member 53L of the first support 41L by the pivot axis 67 around the horizontal axis. The upper rear portion of the second swing member 64 is rotatably supported by the first member 53L of the first support 41L by the pivot axis 68 around the horizontal axis. An engaging portion (roller) 69 is provided at the rear portion of the upper portion of the first swing member 63. An open engaging recess 70 is formed in the front portion of the upper portion of the second swing member 64. The engaging portion 69 is inserted into the engaging recess 70 and engaged.

The first fixture 65 has a first plate 65A fixed to the first swing member 63 and a second plate 65B fixed to the first plate 65A. The lower portion of the second plate 65B projects downward from the first plate 65A. A first mounting bracket 61 is attached to the lower portion of the second plate 65B via bolts or the like.
The second fixture 66 has a third plate 66A fixed to the second swing member 64 and a fourth plate 66B fixed to the third plate 66A. The lower part of the fourth plate 66B projects downward from the third plate 66A. A second mounting bracket 62 is attached to the lower portion of the fourth plate 66B via a bolt or the like.

Further, the first support mechanism 56L has a spring 71 that urges the first planting tool 37L in the closing direction.
In FIG. 6, when the first swing member 63 swings back and forth around the pivot 67, the first component 58 swings back and forth and the engaging portion 69 moves up and down accordingly. When the engaging portion 69 moves up and down, the second swing member 64 swings back and forth around the pivot 68, and the second component 59 swings back and forth. As a result, the first planting tool 37L opens and closes back and forth. The second planting tool 37R, the third planting tool 38L, and the fourth planting tool 38R also open and close back and forth in the same operation.

As shown in FIGS. 5 and 6, the first planting device 36L has a first opening / closing mechanism 72L that opens / closes the first planting tool 37L. The second planting device 36R has a second opening / closing mechanism 72R that opens / closes the second planting tool 37R. Since the first opening / closing mechanism 72L and the second opening / closing mechanism 72R have the same configuration, the first opening / closing mechanism 72L will be described, and the description of the second opening / closing mechanism 72R will be omitted.
The first opening / closing mechanism 72L has a cam 73, a cam roller 74, a cam link 75, and an opening / closing rod 76. The cam 73 is provided on the free end side of the second rotation case 52, and rotates with the rotation of the second rotation case 52. The cam 73 has a pressing portion 73a having a large protrusion amount in the out-of-diameter direction and a pressing release portion 73b having a small protrusion amount in the out-of-diameter direction. The cam roller 74 comes into contact with the outer circumference of the cam 73. The upper part of the cam link 75 is rotatably supported by the first member 53L by the pivot axis 78 around the horizontal axis. A cam roller 74 is pivotally supported in the upper and lower parts of the cam link 75. One end of the opening / closing rod 76 is pivotally connected to the lower part of the cam link 75, and the other end of the opening / closing rod 76 is pivotally connected to the lower part of the first swing member 63.

From the front of the top dead center position to the front of the bottom dead center position of the elevating path of the first planting tool 37L, the cam roller 74 is in contact with the pressing release portion 73b, and the first planting tool 37L is closed. When the first planting tool 37L rushes into the field, the cam roller 74 rides on the pressing portion 73a. Then, the cam roller 74 is pressed by the cam 73, and the cam link 75 swings forward around the pivot 78. When the cam link 75 swings forward, the first component 58 is pulled via the opening / closing rod 76 to open the first planting tool 37L.

The second planting tool 37R is also opened and closed by the second opening / closing mechanism 72R in the same operation.
As shown in FIG. 5, the first planting device 36L has a first interlocking mechanism 81L that opens and closes the third planting tool 38L in conjunction with the first opening / closing mechanism 72L. The second planting device 36R has a second interlocking mechanism 81R that opens and closes the fourth planting tool 38R in conjunction with the second opening / closing mechanism 72R. Since the first interlocking mechanism 81L and the second interlocking mechanism 81R have the same configuration, the first interlocking mechanism 81L will be described, and the description of the second interlocking mechanism 81R will be omitted.

As shown in FIG. 5, the first interlocking mechanism 81L has an interlocking link 82, a connecting member 83, and a connecting rod 84. The upper part of the interlocking link 82 is rotatably supported by a second member 54 of the first support 41L by a pivot axis 85 around a horizontal axis. The pivot 85 is provided concentrically with the pivot 78. The lower front portion of the interlocking link 82 is connected to the cam link 75 by a connecting member 83. As a result, the interlocking link 82 swings integrally with the cam link 75. One end of the connecting rod 84 is pivotally connected to the lower part of the interlocking link 82. The other end of the connecting rod 84 is pivotally connected to the first swinging member 63 that swingably supports the first component 58 of the third planting tool 38L.

In the above-mentioned first opening / closing mechanism 72L, the interlocking link 82 swings in conjunction with the front-rear swing of the cam link 75, so that the third planting tool 38L opens / closes via the connecting rod 84. In the same operation as this, the fourth planting tool 38R is opened and closed by the second interlocking mechanism 81R in conjunction with the opening and closing operation of the second planting tool 37R.
As shown in FIG. 3, the transplanting machine 1 includes a guide member for guiding the seedlings supplied from the first seedling supply device 12L and the second seedling supply device 12R of the seedling supply unit 12 to the planting tool. The guide member includes a first relay guide 87L and a second relay guide 87R.

The first planting device 36L is provided with a first relay guide 87L that guides seedlings to the first planting tool 37L and the third planting tool 38L. Further, the second planting device 36R is provided with a second relay guide 87R for guiding the seedlings to the second planting tool 37R and the fourth planting tool 38R. The first relay guide 87L is provided below the first position X1 and the second position X2 of the first seedling supply device 12L. The second relay guide 87R is provided below the first position X1 and the second position X2 of the second seedling supply device 12R.

The first relay guide 87L includes a first guide 88L that guides the seedlings to the first planting tool 37L and a third guide 89L that guides the seedlings to the third planting tool 38L. The second relay guide 87R includes a second guide 88R that guides the seedlings to the second planting tool 37R and a fourth guide 89R that guides the seedlings to the fourth planting tool 38R. The first guide 88L, the second guide 88R, the third guide 89L, and the fourth guide 89R are formed in a quadrangular pyramid shape (or conical shape) having a shape that tapers downward and the upper and lower parts are open. There is.

The first guide 88L is attached to the first member 53L of the first support 41L, and the third guide 89L is attached to the second member 54L of the first support 41L. The second guide 88R is attached to the first member 53R of the second support 41R, and the fourth guide 89R is attached to the second member 54R of the second support 41R.
Next, the tubes 94 and 95 that guide water to the guide member will be described.

As shown in FIGS. 4 and 7 to 9, the transplanting machine 1 guides the water supplied from the irrigation tank T, which will be described later, to the guide members (first guide 88L, second guide 88R, third guide 89L, fourth guide). It is provided with tubes 94 and 95 leading to 89R). The tubes 94 and 95 are made of a flexible material such as rubber.
The tubes 94 and 95 include a first tube 94L, a second tube 94R, a third tube 95L, and a fourth tube 95R. The first tube 94L guides water to the first guide 88L. The second tube 94R guides water to the second guide 88R. The third tube 95L guides water to the third guide 89L. The fourth tube 95R guides water to the fourth guide 89R.

The positions of the tip portions of the tubes 94 and 95 with respect to the guide member are held. In other words, the tips of the tubes 94 and 95 are fixed in relative positions to the guide members. Specifically, the tip of the first tube 94L has a fixed relative position with respect to the first guide 88L. The tip of the second tube 94R is fixed at a position relative to the second guide 88R. The tip of the third tube 95L is fixed in a position relative to the third guide 89L. The tip of the fourth tube 95R is fixed in a position relative to the fourth guide 89R.

As shown in FIG. 8, the first tube 94L has a main tube 94La, a branch portion 94Lb, and a branch tube 94Lc. The base end side of the main tube 94La is connected to the irrigation tank T via a water supply pump (not shown). The branch portion 94Lb is provided on the tip end side of the main tube 94La, and has one inlet port and two outlet ports. The tip of the main tube 94La is connected to the inlet port. The branch tube 94Lc is connected to each of the two outlet ports of the branch portion 94Lb. As a result, the water led from one main tube 94La is divided into two branch tubes 94Lc and circulated. The branch tubes 94Lc branched from the branch portions 94Lb into a plurality (two) are mounted on the plurality (two) mounting portions 96A and 96B, which will be described later, respectively.

The configuration of the second tube 94R, the third tube 95L, and the fourth tube 95R is the same as that of the first tube 94L. As shown in FIG. 8, the second tube 94R has a main tube 94Ra, a branch portion 94Rb, and a branch tube 94Rc similar to the first tube 94L. The third tube 95L also has the same main tube 95La, branch portion 95Lb, and branch tube 95Lc as the first tube 94L. The fourth tube 95R also has the same main tube 95Ra, branch portion 95Rb, and branch tube 95Rc as the first tube 94L.

As shown in FIGS. 4, 8 and 9, the guide members (first guide 88L, second guide 88R, third guide 89L, fourth guide 89R) are positioned at the tips of the tubes 94 and 95 with respect to the guide members. It has a mounting portion 96 for holding the above. The mounting portion 96 has a cylindrical shape with an open upper portion and a lower portion, and is mounted by inserting the tip portions of the tubes 94 and 95 from the upper portion. The tip of the first tube 94L is mounted on the mounting portion 96 of the first guide 88L. The tip of the second tube 94R is mounted on the mounting portion 96 of the second guide 88R. The tip of the third tube 95L is mounted on the mounting portion 96 of the third guide 89L. The tip of the fourth tube 95R is mounted on the mounting portion 96 of the fourth guide 89R.

Since the configuration of the mounting portion 96 of each guide member (first guide 88L, second guide 88R, third guide 89L, fourth guide 89R) is the same, the mounting portion 96 of the first guide 88L will be described as a representative. ..
As shown in FIGS. 8 and 9, the mounting portion 96 includes two mounting portions 96A and 96B. One mounting portion 96A is provided on the front lower portion of the outer surface of the first guide 88L. The other mounting portion 96B is provided at the rear lower portion of the outer surface of the first guide 88L. Further, one mounting portion 96A and the other mounting portion 96B are provided at the center of the first guide 88L in the body width direction. The tip of one of the two branch tubes 94Lc of the first tube 94L is mounted on the one mounting portion 96A. The tip of the other branch tube of the two branch tubes 94Lc of the first tube 94L is mounted on the other mounting portion 96B.

The tip of the tube (branch tube 94Lc) is attached to the attachment portions 96A and 96B so that water can be discharged toward the inner surface of the planting tool. Specifically, as shown in FIG. 9, the tip of one branch tube 94Lc mounted on one mounting portion 96A is located above and below the first component 58 on the front side of the first planting tool 37L. (1st component 58 side). As a result, water can be discharged from one of the branch tubes 94Lc toward the first component 58 side, and the soil adhering to the inner surface of the first component 58 can be removed. Further, the tip of the other branch tube 94Lc mounted on the other mounting portion 96B is located above and below the second component 59 on the rear side of the first planting tool 37L (second component 59 side). ). As a result, water can be discharged from the other branch tube 94Lc toward the second component 59 side, and the soil adhering to the inner surface of the second component 59 can be removed.

Further, the tip of one branch tube 94Lc mounted on one mounting portion 96A is located above the center on the inner surface side of the curve of the first component 58 (center in the width direction of the machine body). The tip of the other branch tube 94Lc mounted on the other mounting portion 96B is located above the center (center in the width direction of the machine body) on the inner surface side of the curve of the second component 59. As a result, the soil adhering to the inner surfaces of the first component 58 and the second component 59 can be smoothly removed.

Further, by discharging water from the first tube 94L, the seedlings can be smoothly separated from the first planting tool 37L, and the seedlings can be reliably planted. In addition, the seedlings planted by the first planting tool 37L can be irrigated. Further, by discharging water from the second tube 94R, the third tube 95L, and the fourth tube 95R, the seedlings can be smoothly separated from the second planting tool 37R, the third planting tool 38L, and the fourth planting tool 38R, respectively. , The seedlings planted by each planting tool can be irrigated.

As shown in FIG. 8, the main tube 94La of the first tube 94L and the main tube 95Ra of the fourth tube 95R are formed by the binding tools 151 and 152 to form the front frame material (front frame) 29 and the second connecting material (side frame). ) It is attached along 50R. Specifically, the base end side of the main tubes 94La and 95Ra is attached by the binding tool 151 along the second connecting member (side frame) 50R and extends from the rear to the front. The tip end side of the main tube 94La is attached by the binding tool 152 along the front frame material (front frame) 29, extends to the left, and then extends rearward to be connected to the branch portion 94Lb. The tip end side of the main tube 95Ra extends to the left along the front frame material (front frame) 29 and then extends rearward to be connected to the branch portion 95Rb.

Further, the main tube 94Ra of the second tube 94R and the main tube 95La of the third tube 95L are formed along the front frame material (front frame) 29 and the first connecting material (side frame) 50L by the binding tools 152 and 153. It is attached. Specifically, the base end side of the main tubes 94Ra and 95La is attached by the binding tool 153 along the first connecting member (side frame) 50L and extends from the rear to the front. The tip end side of the main tube 94Ra is attached by the binding tool 152 along the front frame material (front frame) 29, extends to the right, and then extends rearward to be connected to the branch portion 94Rb. The tip end side of the main tube 95La extends to the left along the front frame material (front frame) 29 and then extends rearward to be connected to the branch portion 95Lb.

The branch portions 94Lb, 94Rb, 95Lb, 95Rb of the tubes (first tube 94L, second tube 94R, third tube 95L, fourth tube 95R) are arranged behind the front frame 29. The branch portion 94Lb of the first tube 94L and the branch portion 95Lb of the third tube 95L are arranged between the first guide 88L and the third guide 89L. The branch portion 94Rb of the second tube 94R and the branch portion 95Rb of the fourth tube 95R are arranged between the second guide 88R and the fourth guide 89R.

The first tube 94L and the third tube 95L are bundled behind the front frame 29. Specifically, the main tube 94La of the first tube 94L and the main tube 95La of the third tube 95L are bundled by the binding tool 154 between the first guide 88L and the third guide 89L.
The second tube 94R and the fourth tube 95R are bundled behind the front frame 29. Specifically, the main tube 94Ra of the second tube 94R and the main tube 95Ra of the fourth tube 95R are bundled between the second guide 88R and the fourth guide 89R by a binding tool 155.

Next, a mechanism for detecting the height of the ridge for planting the seedlings (grounding member 160, support member 170, ridge height detecting member 180) will be described.
As shown in FIGS. 12 to 16, the transplanting machine 1 includes a plurality of grounding members 160 that are grounded to the ridges, a plurality of support members 170 that swingably support the grounding member 160 with respect to the machine body 2, and support members. It includes a ridge height detecting member 180 that detects the ridge height based on the swing of 170.

The grounding member 160 detects the height of the ridge and suppresses the upper surface of the ridge by rolling on the upper surface of the ridge. The grounding member 160 includes a first grounding member 161L, a second grounding member 161R, a third grounding member 162L, and a fourth grounding member 162R. The first grounding member 161L, the second grounding member 161R, the third grounding member 162L, and the fourth grounding member 162R are each composed of a pair (two) of grounding rollers.

As shown in FIGS. 13 and 16, the first grounding member 161L is provided on the side of the first planting tool 37L. The second grounding member 161R is provided on the side of the second planting tool 37R. The third grounding member 162L is provided on the side of the third planting tool 38L. The fourth grounding member 162R is provided on the side of the fourth planting tool 38R.
Specifically, the first grounding member 161L is a grounding member 161La arranged on one side (left side) of the first planting tool 37L in the body width direction and the other side (left side) of the first planting tool 37L in the body width direction. Includes the other grounding member 161Lb, which is located on the right side). The second grounding member 161R is located on one side (left side) of the second planting tool 37R in the body width direction, while on the other side (right side) of the second grounding member 161Ra and the second planting tool 37R in the body width direction. Includes the other grounding member 161Rb, which is arranged. The third grounding member 162L is located on one side (left side) of the third planting tool 38L in the body width direction, while the grounding member 162La is located on the other side (right side) of the third planting tool 38L in the body width direction. Includes the other grounding member 162Lb, which is arranged. The fourth grounding member 162R is located on one side (left side) of the fourth planting tool 38R in the body width direction, while on the other side (right side) of the fourth grounding tool 38R in the body width direction. Includes the other grounding member 162Rb, which is arranged.

As shown in FIGS. 12, 13, and 16, the support member 170 includes a first support member 171L, a second support member 171R, a third support member 172L, and a fourth support member 172R. The first support member 171L supports the first ground contact member 161L so as to swing upward or downward with respect to the machine body 2. The second support member 171R supports the second ground contact member 161R so as to swing upward or downward with respect to the machine body 2. The third support member 172L supports the third ground contact member 162L so as to swing upward or downward with respect to the machine body 2. The fourth support member 172R supports the fourth ground contact member 162R so as to swing upward or downward with respect to the machine body 2.

The first support member 171L and the second support member 171R are arranged at the center in the width direction of the machine body. Specifically, the first support member 171L and the second support member 171R are arranged at positions adjacent to each other with the central portion in the width direction of the machine body interposed therebetween. The third support member 172L and the fourth support member 172R are arranged on the outer side of the machine body with respect to the first support member 171L and the second support member 171R.

Since the structures of the first support member 171L to the fourth support member 172R are the same, the structure of the first support member 171L will be described as a representative, and the description of the structure of the second support member 171R to the fourth support member 172R will be omitted. do.
As shown in FIGS. 12 to 14 and 16, the first support member 171L has a support arm 173 and a swing arm 174.

The support arm 173 rotatably supports the first grounding member 161L. The support arm 173 includes one arm 173L that supports one of the pair of grounding rollers constituting the first grounding member 161L, the other arm 173R that supports the other of the pair of grounding rollers, and a connecting arm 173M. On the other hand, one end (lower end) of the arm 173L rotatably supports one grounding member 161La of the first grounding member 161L. The other arm 173R has one end (lower end) rotatably supporting the other grounding member 161Lb of the first grounding member 161L. The other end (upper end) of the arm 173L and the other arm 173R are connected to each other by a connecting arm 173M.

The swing arm 174 supports the support arm 173 so as to swing upward or downward with respect to the machine body 2. One end (lower end) of the swing arm 174 is connected to the connecting arm 173M of the support arm 173, and extends diagonally forward and upward from the connecting arm 173M. The other end (upper end) of the swing arm 174 is attached to a shaft body 175 extending in the width direction of the machine body. The shaft body 175 is supported below the front frame member 29 via a shaft support 176, and is rotatable around the shaft center. As the shaft body 175 rotates around the axis, the first support member 171L (swing arm 174 and support arm 173) swings upward or downward with respect to the machine body 2. As a result, the first support member 171L swings upward or downward with respect to the machine body 2 in response to a change in the height (undulations) of the ridges on which the first grounding member 161L touches the ground.

Similarly, the second support member 171R, the third support member 172L, and the fourth support member 172R have the height (undulations) of the ridges on which the second grounding member 161R, the third grounding member 162L, and the fourth grounding member 162R touch the ground. It swings upward or downward with respect to the aircraft 2 in response to each change.
As shown in FIGS. 12, 13, and 16, the ridge height detecting member 180 is a first support arranged at the center of a plurality of support members (first to fourth support members) in the width direction of the machine body. The member 171L and the second support member 171R are connected. The third support member 172L and the fourth support member 172R arranged on the outer side of the machine body are not connected to the ridge height detection member 180.

The ridge height detecting member 180 has a detecting unit 181 and an interlocking unit 182.
The detection unit 181 has a first vertical member 181L, a second vertical member 181R, and a horizontal member 181H. One end (lower end) of the first vertical member 181L is connected to the support arm 173 of the first support member 171L, and extends upward from the support arm 173. One end (lower end) of the second vertical member 181R is connected to the support arm 173 of the second support member 171R, and extends upward from the support arm 173. The horizontal member 181H connects the other end (upper end) of the first vertical member 181L and the other end (upper end) of the second vertical member 181R. The detection unit 181 rises or falls based on the swing of the first support member 171L and the second support member 171R that follow the change in the height of the ridges on which the first grounding member 161L and the second grounding member 161R touch the ground. Detects the height of the ridges.

The interlocking portion 182 interlocks the swinging of the first support member 171L and the second support member 171R with the raising and lowering of the machine body 2 by the machine body raising and lowering mechanism. One end of the interlocking unit 182 is connected to the detection unit 181 (horizontal member 181H), and the other end is connected to the spool of the elevating control valve described above via an interlocking member such as a cable. The interlocking unit 182 moves the spool of the elevating control valve in response to the ascent or descent of the detection unit 181. By moving the spool of the elevating control valve, the rod of the elevating cylinder operates to elevate and lower the machine body 2 with respect to the wheels. Specifically, when the detection unit 181 is raised, the machine body 2 is raised with respect to the wheels, and when the detection unit 181 is lowered, the machine body 2 is lowered with respect to the wheels. As a result, the machine body 2 can be raised and lowered in accordance with the change in the height of the ridges.

The ridge height detecting member 180 connects a plurality of support members (first support member 171L and second support member 171R), and detects at least the ridge height based on the swing of the plurality of support members. The ridge height can be detected in consideration of the heights of the two ridges. As a result, the average ridge height can be accurately detected in consideration of the variation in the height of the plurality of ridges. Since the ridge height detecting member 180 connects the first support member 171L and the second support member 171R arranged in the central portion in the machine body width direction, the ridge height detecting member 180 is adjacent at the central portion in the machine body width direction 2 The ridge height can be detected in consideration of the height of one ridge. Therefore, even when the number of ridges is large, it is possible to accurately detect the average ridge height in consideration of the variation in the height of a plurality of ridges while adopting a relatively simple structure.

As shown in FIGS. 13 and 15 to 17, the transplanting machine 1 includes planting tools (first planting tool 37L, second planting tool 37R, third planting tool 38L, fourth planting tool 38R). It is provided with a soil removing member 190 that scrapes off the soil adhering to the surface of the planting tool when the planting tool is moved up and down. The soil removing member 190 is composed of a flexible and deformable member such as a rubber plate.
As shown in FIG. 17, the soil removing member 190 includes an anterior soil removing member 190F arranged on the front side of the planting tool (first planting tool 37L, etc.) and a rear side arranged on the rear side of the planting tool. Includes soil removal member 190B. The front soil removing member 190F scrapes off the soil adhering to the first component 58 of the planting tool. The rear soil removing member 190 B scrapes off the soil adhering to the second component 59 of the planting tool.

The front soil removing member 190F is attached to the first support member 171L, the second support member 171R, the third support member 172L, and the fourth support member 172R, respectively. The soil removing member 190 attached to the first support member 171L scrapes off the soil adhering to the first planting tool 37L. The soil removing member 190 attached to the second support member 171R scrapes off the soil adhering to the second planting tool 37R. The soil removing member 190 attached to the third support member 172L scrapes off the soil adhering to the third planting tool 38L. The soil removing member 190 attached to the fourth support member 172R scrapes off the soil adhering to the fourth planting tool 38R.

As shown in FIG. 15 and the like, the front soil removing member 190F is attached to the support arm 173 of the support member 170. Specifically, the front soil removing member 190F is attached to the connecting arm 173M of the support arm 173. The front soil removing member 190F is composed of a substantially rectangular plate, and the front portion is connected to the connecting arm 173M and extends rearward from the connecting arm 173M. An arcuate notch 190a is formed in the rear portion of the front soil removing member 190F. As shown in FIG. 17, when the planting tool is lowered, the first component 58 on the front side is lowered while being in contact with the notch 190a of the soil removing member 190F on the front side. As a result, the soil D adhering to the surface (outer surface) of the first component 58 is scraped off by the front soil removing member 190F.

As shown in FIG. 17, the rear soil removing member 190 B is attached to the connecting member 191. The connecting member 191 is connected to the front portions of the decks 10L and 10R. The rear soil removing member 190 B extends forward from the connecting member 191. The rear soil removing member 190 B has the same shape as the front soil removing member 190 F, and is attached to the connecting member 191 so that the arc-shaped notch 190 a is located at the front portion. When the planting tool is lowered, the second component 59 on the rear side is lowered while being in contact with the notch 190 a of the soil removing member 190 B on the rear side. As a result, the soil adhering to the surface (outer surface) of the second component 59 is scraped off by the rear soil removing member 190 B.

As shown in FIGS. 12, 13, and 15, the support members 170 adjacent to each other in the width direction of the machine body are connected by the connecting member 177. Specifically, the connecting member 177 connects the first support member 171L and the third support member 172L, and connects the second support member 171R and the fourth support member 172R. The connecting member 177 is connected to the support members 170 (first support member 171L and third support member 172L, second support member 171R and fourth support member 172R) adjacent to each other in the width direction of the machine body by bolts or the like. The shape of the connecting member 177 is not limited to the flat plate-shaped member as shown in the drawing, and may be, for example, a member (angle member) having an L-shaped cross section.

Next, the support structures of the chairs 13L and 13R will be described mainly with reference to FIGS. 18 to 22, 29, and 30. Although FIGS. 18 to 22, 29, and 30 show the support structure of the first chair 13L, the support structure of the second chair 13R is also the same.
As shown in FIGS. 18, 19, 29, and 30, the chairs 13L and 13R are supported by the wheel supports 7L and 7R. Specifically, the first chair 13L is supported by the wheel support 7L. The second chair 13R is supported by the wheel support 7R.

The wheel supports 7L and 7R each have a transmission case 100.
The transmission case 100 includes a front gear case 100a, a rear gear case 100b, and a transmission shaft case 100c. The front gear case 100a is connected to a rear axle case 101 projecting outward from the transmission case M1. The rear axle case 101 accommodates an output shaft 102 that extracts power from the transmission housed in the mission case M1. The rear gear case 100b is connected to the outer side of the axles of the rear wheels 4L and 4R. The transmission shaft case 100c connects the front gear case 100a and the rear gear case 100b. The transmission shaft case 100c houses a transmission shaft that transmits power from the front gear mechanism housed in the front gear case 100a to the rear gear mechanism housed in the rear gear case 100b. The power of the prime mover E1 is output from the output shaft 102 via the transmission mechanism in the transmission case M1, and the rear wheels 4L, via the transmission mechanism (front gear mechanism, transmission shaft, rear gear mechanism) in the transmission case 100. It is transmitted to the 4R axle. As a result, the rear wheels 4L and 4R are driven by the power of the prime mover E1. The transmission mechanism housed in the transmission case 100 may be another transmission mechanism such as a chain transmission mechanism. The transmission case 100 is provided so as to be swingable with respect to the machine body 2. Specifically, the transmission case 100 is provided so as to be swingable around the horizontal axis (around the axis of the output shaft 102) with respect to the machine body 2.

The chairs 13L and 13R are supported by the transmission case 100 by the support mechanism 103. As shown in FIGS. 18 to 21, the support mechanism 103 includes a support column 104, a bracket 105, a support shaft 106, and a connecting member 107.
The support columns 104 are arranged on the outer side of the fuselage of the rear wheels 4L and 4R. The upper portion of the support column 104 is connected to a chair support plate 108 (see FIG. 18) fixed to the lower surface of the seat portion 13a of the chairs 13L and 13R, and extends downward from the chair support plate 108. A bracket 105 is attached to the lower part of the support column 104. The support column 104 is composed of, for example, a cylindrical or hexagonal tubular pipe.

The bracket 105 has a first side plate 105a, a second side plate 105b, and a connecting portion 105c. The first side plate 105a is arranged on the side of the support column 104 toward the inside of the aircraft, and is located between the rear wheels 4L and 4R and the support column 104. The second side plate 105b is arranged on the outer side of the body of the support column 104 and faces the first side plate 105a. The connecting portion 105c extends in the width direction of the machine body, and connects the upper portion of the first side plate 105a and the upper portion of the second side plate 105b, and the rear portion of the first side plate 105a and the rear portion of the second side plate 105b.

The bracket 105 is pivotally supported by the transmission case 100. Specifically, the bracket 105 is pivotally supported by the first pivot shaft 141 with respect to the pivot plate 100d provided on the transmission shaft case 100c of the transmission case 100. The pivot plate 100d extends upward from the transmission case 100. The pivot plate 100d includes a first pivot plate 100d1 and a second pivot plate 100d2 arranged so as to face each other. The first pivot plate 100d1 is arranged on the side of the second side plate 105b toward the inside of the aircraft. The second pivot plate 100d2 is arranged on the outer side of the body of the first side plate 105a. The first pivot shaft 141 extends in the width direction of the machine body and penetrates the first side plate 105a, the second side plate 105b, the first pivot plate 100d1, and the second pivot plate 100d2. As a result, the bracket 105 can swing around the first pivot shaft 141 with respect to the transmission case 100.

The support shaft 106 projects laterally from the machine body 2. One end side (inside the machine body side) of the support shaft 106 is fixed to the body 2 and extends from the body 2 toward the outside of the body. The support shaft 106 is arranged above and behind the output shaft 102.
The connecting member 107 has an inner plate 107a, an outer plate 107b, and an upper plate 107c. The inner plate 107a is arranged on the inside of the machine body of the support column 104, and is located between the support column 104 and the rear wheels 4L and 4R. The outer plate 107b is arranged on the outer side of the body of the support column 104 and faces the inner plate 107a. The upper plate 107c connects the upper portion of the inner plate 107a and the upper portion of the outer plate 107b in front of the support column 104.

One end side (front side) of the connecting member 107 is pivotally supported on the other end side (outside side of the machine body) of the support shaft 106. As a result, the connecting member 107 can swing upward or downward around the support shaft 106. The other end side (rear side) of the connecting member 107 is pivotally supported by the bracket 105. Specifically, the other end side of the connecting member 107 is pivotally supported by the second pivot shaft 142 with respect to the bracket 105. The other end side of the connecting member 107 is above the transmission case 100 and is arranged above the pivot plate 100d. The other end side of the inner plate 107a is arranged on the outer side of the first side plate 105a of the bracket 105. The other end side of the outer plate 107b is arranged on the in-machine side of the second side plate 105b of the bracket 105. A tubular body 105d is fixed to the bracket 105, and the second pivot shaft 142 is rotatably supported with respect to the tubular body 105d. The second pivot shaft 142 extends in the width direction of the machine body and penetrates the inner plate 107a, the outer plate 107b, and the tubular body 105d. As a result, the bracket 105 can swing upward or downward around the second pivot shaft 142 with respect to the other end side of the connecting member 107. The second pivot shaft 142 is located above the first pivot shaft 141. The support column 104, the bracket 105, and the connecting member 107 form a chair support that supports the chairs 13L and 13R with respect to the support shaft 106.

The bracket 105, the connecting member 107, the output shaft 102, the support shaft 106, the first pivot shaft 141, and the second pivot shaft 142 constitute a four-section link mechanism. When the transmission case 100 swings upward or downward around the output shaft 102, the bracket 105 moves upward or downward. Therefore, when the transmission case 100 swings around the output shaft 102, the support column 104 to which the bracket 105 is attached can be moved up and down without tilting. Therefore, the posture of the worker seated on the chairs 13L and 13R supported by the support column 104 is not impaired. Further, the weight of the worker sitting on the chairs 13L and 13R can be distributed and supported by the first pivot shaft 141 and the second pivot shaft 142 and the like.

The transmission case 100 slides along the output shaft 102 and can move in the width direction of the machine body. The connecting member 107 slides along the support shaft 106 and can move in the width direction of the machine body. Since the transmission case 100 and the connecting member 107 are connected via the bracket 105, they can be integrally moved in the width direction of the machine body (outside the machine body or inside the machine body). When the transmission case 100 and the connecting member 107 move to the outside of the machine body, the chairs 13L and 13R and the rear wheels 4L and 4R move to the outside of the body and separate from the body 2. When the transmission case 100 and the connecting member 107 move toward the inside of the aircraft, the chairs 13L and 13R and the rear wheels 4L and 4R move toward the inside of the aircraft and approach the aircraft 2. That is, the transmission case 100, the output shaft 102, the connecting member 107, and the support shaft 106 form a moving mechanism that causes the chairs 13L, 13R and the rear wheels 4L, 4R to approach or separate from the machine body 2.

As shown in FIGS. 18, 19, 22, 23, and 31, the porting machine 1 includes a protective cover 110 that covers at least the tread portion (grounding portion) of the rear wheels 4L and 4R. The protective cover 110 includes a first protective cover (wheel cover) 111L, 111R and a second protective cover 112L, 112R. That is, the tread portion of the rear wheels 4L and 4R is covered with two protective covers (first protective cover 111L and 111R and second protective cover 112L and 112R). The second protective covers 112L and 112R are arranged above the first protective covers 111L and 111R, and a part (rear portion) overlaps with the first protective covers 111L and 111R.

First, the first protective covers 111L and 111R will be described.
The first protective cover 111L is arranged on the left side of the airframe 2, and covers the upper rear part of the rear wheel 4L. The first protective cover 111R is arranged on the right side of the airframe 2, and covers the upper rear part of the rear wheel 4R. The first protective cover 111L and the first protective cover 111R are symmetrical with respect to the center in the width direction of the machine body and have the same configuration. Therefore, the first protective cover 111L will be described below, and the description of the first protective cover 111R will be omitted.

The first protective cover 111L has an upper cover portion 111a, a rear cover portion 111b, and a side cover portion 111c. The upper cover portion 111a is arranged so that one surface (front surface) faces upward and the other surface (back surface) faces downward, and covers the upper side of the rear wheel 4L. The rear cover portion 111b extends downward from the rear end of the upper cover portion 111a. The rear cover portion 111b is inclined with respect to the upper cover portion 111a so as to move rearward as it extends downward. The rear cover portion 111b covers the rear of the rear wheel 4L (above the rear portion of the rear wheel 4L). The upper cover portion 111a and the rear cover portion 111b cover the tread portion of the rear wheel 4L. The side cover portion 111c is arranged on the left side of the rear wheel 4L and covers the left side of the rear wheel 4L. The upper end of the side cover portion 111c is connected to the left end of the upper cover portion 111a. The rear end of the side cover portion 111c is connected to the left end of the side cover portion 111c.

As shown in FIGS. 18 and 19, the first protective cover 111L is attached to the transmission case 100 via the support stay 116. The support stay 116 connects the transmission case 100 and the first protective cover 111L. The front portion of the support stay 116 is attached to the pivot plate 100d of the transmission case 100 by bolts or the like, and extends rearward from the transmission case 100. The lower part of the side cover portion 111c is attached to the rear portion of the support stay 116 by bolts or the like. As a result, the positions of the first protective covers 111L and 111R are fixed with respect to the transmission case 100 of the wheel support 7L.

As shown in FIGS. 22, 29, and 30, when the airframe 2 is moved up and down relative to the wheels (front wheels 3L, 3R, rear wheels 4L, 4R) by the airframe elevating mechanism, the transmission case 100 with respect to the horizontal plane The inclination angle changes, and the first protective covers 111L and 111R move with the inclination of the transmission case 100.
Next, the second protective covers 112L and 112R will be described.

The second protective cover 112L is arranged on the left side of the airframe 2, and covers the upper part of the rear wheel 4L. The second protective cover 112R is arranged on the right side of the airframe 2, and covers the upper part of the rear wheel 4R. The second protective cover 112L and the second protective cover 112R are symmetrical with respect to the center in the width direction of the machine body and have the same configuration. Therefore, the second protective cover 112L will be described below, and the description of the second protective cover 112R will be omitted.

As shown in FIGS. 18, 19, 22, and 23, the second protective cover 112L has a substrate 113 and a swinging portion 114.
The substrate 113 is arranged above the first protective cover 111L. The substrate 113 is arranged so that one surface (front surface) faces upward and the other surface (back surface) faces downward, and the substrate 113 extends in the front-rear direction above the rear wheels 4L. As shown in FIGS. 18, 19, and 23, the substrate 113 is supported by a support column 104 that supports the chair 13L via a cover support 115. One end (the end on the outer side of the machine body) of the cover support 115 is fixed to the middle part of the support column 104, and extends from the middle part to the inside of the machine body across the upper part of the rear wheel 4L. The substrate 113 is fixed to the upper part of the cover support 115.

As shown in FIGS. 22, 29, and 30, the substrate 113 moves up and down together with the support column 104 and the chair 13L as the machine body 2 moves up and down. As a result, the vertical distance (gap) between the substrate 113 and the rear wheels 4L increases or decreases as the machine body 2 moves up and down.
As shown in FIGS. 18, 19, and 22, the swinging portion 114 includes a first swinging portion 114F and a second swinging portion 114B. The first swinging portion 114F is swingably connected to the front portion of the substrate 113. The second swinging portion 114B is swingably connected to the rear portion of the substrate 113. The first swinging portion 114F and the second swinging portion 114B are plate-shaped and hang down from the substrate 113 by their own weight. The first swinging portion 114F and the second swinging portion 114B swing upward or downward as the machine body 2 moves up and down. Specifically, the first swinging portion 114F swings upward when the substrate 113 rises, and swings downward when the substrate 113 descends. The second swinging portion 114B swings downward when the substrate 113 rises, and swings upward when the substrate 113 descends.

Hereinafter, the relationship between the movement of the first protective cover 111L and the swing of the first swing portion 114F and the second swing portion 114B will be described in detail.
As shown in FIG. 22, the first protective cover 111L changes its relative position with respect to the rear wheels 4L as the body 2 moves up and down. Specifically, since the transmission case 100 swings around the output shaft 102 as the machine body 2 moves up and down, the first protective cover 111L also swings around the output shaft 102. As a result, the first protective cover 111L changes its position relative to the rear wheel 4L. The first protective cover 111L is located at the first position when the aircraft 2 is lowered (see the left figure of FIG. 22 and FIG. 29), and is located at a second position different from the first position when the aircraft 2 is raised (FIG. 22). See the right figure and FIG. 30). With respect to the rear wheel 4L, the second position is behind the first position.

As shown in the left view of FIG. 22, when the first protective cover 111L is in the first position, the second swinging portion 114B is inclined with respect to the substrate 113 at a first angle α1 of the first protective cover 111L. Contact the top surface. Further, as shown in the right figure of FIG. 22, the second swinging portion 114B is inclined at a second angle α2 with respect to the substrate 113 when the first protective cover 111L is in the second position, and the first protective cover is covered. It abuts on the upper surface of 111L. The second angle α2 is different from the first angle α1. Specifically, the second angle α2 is smaller than the first angle α1 (α1> α2). The first angle α1 and the second angle α2 are angles (the magnitude of the downward angle) with respect to the lower surface of the substrate 113.

The second swinging portion 114B swings following the ascending / descending of the machine body 2, so that the first protective cover 111L covers the portion separated from the tread portion by movement. More specifically, when the first protective cover 111L moves from the first position to the second position as the aircraft 2 rises, the first protective cover 111L moves rearward relative to the rear wheels 4L. As a result, the first protective cover 111L is separated from the upper part (top) of the tread portion of the rear wheel 4L. At this time, the second swinging portion 114B swings in the direction (downward) in which the angle with respect to the substrate 113 becomes smaller (see arrow C1 in the right figure of FIG. 22). Therefore, the second swinging portion 114B hangs down at an angle close to a right angle with respect to the substrate 113, and the length in the vertical direction becomes long. As a result, the second swinging portion 114B can cover the portion separated from the tread portion from the first protective cover 111L from the rear. In other words, when the first protective cover 111L moves from the first position to the second position, the vertical distance between the substrate 113 and the first protective cover 111L increases. The generated space can be filled by the swing of the second swing portion 114B. As a result, it is possible to prevent the feet of the worker seated on the chair 13L from coming into contact with the tread portion of the rear wheel 7L. In addition, it is possible to prevent the operator's feet from being pinched between the first protective cover 111L and the second protective cover 112L as the machine body 2 moves up and down.

As shown in the left view of FIG. 22, when the machine body 2 descends with respect to the wheels, the first swinging portion 114F inclines with respect to the substrate 113 at a third angle β1 and comes into contact with the upper part of the support shaft 106. .. Further, as shown in the right figure of FIG. 22, when the machine body 2 rises with respect to the wheels, the first swinging portion 114F is inclined at a fourth angle β2 with respect to the substrate 113 and is placed on the upper part of the support shaft 106. Contact. The fourth angle β2 is different from the third angle β1. Specifically, the fourth angle β2 is larger than the third angle β1 (β1 <β2). The third angle β1 and the fourth angle β2 are angles (the magnitude of the downward angle) with respect to the lower surface of the substrate 113.

As shown in the right figure of FIG. 22, when the substrate 113 rises following the rise of the machine body 2 (see arrow C2), the first swing portion 114F swings in a direction in which the angle with respect to the board 113 increases (see arrow C2). See arrow C3). Therefore, the first swinging portion 114F extends forward in a posture approaching substantially horizontal, and the length in the front-rear direction becomes long. As a result, the first rocking portion 114F can reliably cover the upper part of the front portion of the rear wheel 7L. Therefore, it is possible to prevent the feet of the worker seated on the chair 13L from coming into contact with the front portion of the rear wheel 7L.

Since the action (operation) of the second protective cover 112R is the same as the action (operation) of the second protective cover 112L described above, the description thereof will be omitted.
As shown in FIGS. 23 and 24, the porting machine 1 is provided with a scraper 130 that scrapes off the soil adhering to the side surfaces of the rear wheels 4L and 4R. The scraper 130 connects the center of the side surface of the rear wheels 4L and 4R to the first protective cover (wheel cover) 111L and 111R. A cylindrical mounting member 133 projects from the center of the side surface of the rear wheels 4L and 4R toward the inside of the machine, and one end (front end) of the scraper 130 is attached to the mounting member 133 by a bolt BL2 or the like. ing. The mounting member 133 is connected to the rear gear case 100b of the transmission case 100 on the outer side of the rear wheels 4L and 4R, and does not rotate depending on the drive (rotation) of the rear wheels 4L and 4R. As a result, when the rear wheels 4L and 4R rotate, the scraper 130 can scrape off the soil adhering to the side surface (inner surface) of the rear wheels 4L and 4R.

The scraper 130 connects the center of the side surface of the rear wheels 4L and 4R to the rear cover portion 111b of the first protective covers 111L and 111R. Further, the first protective covers 111L and 111R are connected to the transmission case 100 via the support stay 116. As a result, the first protective covers 111L and 111R are connected not only to the transmission case 100 via the support stay 116 but also to the side center of the rear wheels 4L and 4R via the scraper 130. .. Therefore, the first protective covers 111L and 111R are firmly supported in a stable state.

The scraper 130 has a first extension portion 131 and a second extension portion 132.
The first extending portion 131 extends from the center of the side surface of the rear wheels 4L and 4R to the lower end of the rear cover portions 111b of the first protective covers 111L and 111R. The second extending portion 132 abuts on the inner surface of the rear cover portion 111b and extends in the wheel width direction (outside the machine body). The second extension portion 132 is fixed to the inner surface of the lower end of the rear cover portion 111b by bolts BL1. As a result, the lower end of the rear cover portion 111b is reinforced by the scraper 130.

As shown in FIGS. 19 and 24, the second extension portion 132 is connected to the support stay 116. The support stay 116 has a rear extension portion 116a extending rearward along the inner surface of the side cover portions 111c of the first protective covers 111L and 111R, and a rear extension portion 116a that is bent toward the inside of the aircraft from the rear end portion of the rear extension portion 116a. It has an inward extension portion 116b extending along the inner surface of the cover portion 111b. The second extension portion 132 of the scraper 130 and the inner extension portion 116b of the support stay 116 are fastened together with the rear cover portion 111b by the bolt BL1. As a result, the scraper 130 is connected to the first protective covers 111L and 111R together with the support stay 116.

As shown in FIGS. 23 and 24, the first extension portion 131 has an inner portion 131a, an outer portion 131b, and an intermediate portion 131c. The inner portion 131a extends from the mounting member 133 provided at the center of the side surface of the rear wheels 4L, 4R toward the outer diameter of the rear wheels 4L, 4R. The outer portion 131b is within the diameter of the rear wheels 4L, 4R along the side surface of the tire (rubber ring) 4T of the rear wheels 4L, 4R on the vehicle body side from the end of the second extension portion 132 on the vehicle body side. It extends in the direction. The intermediate portion 131c connects the inner portion 131a and the outer portion 131b on the inner surface side (opposite the ground contact surface) of the tire 4T. The intermediate portion 131c is inclined and extends with respect to the inner portion 131a and the outer portion 131b so as to move toward the inside of the aircraft as the rear wheels 4L and 4R move toward the outside diameter.

Next, the boarding / alighting steps 120L and 120R for getting on and off the chairs 13L and 13R will be described.
As shown in FIGS. 25, 26, and 31, the transplanting machine 1 includes boarding / alighting steps 120L and 120R. The boarding / alighting step 120L (first boarding / alighting step) is arranged on one side (left side) in the aircraft width direction. The boarding / alighting step 120R (second boarding / alighting step) is arranged on one side (right side) in the aircraft width direction. Although FIGS. 25 and 26 show the peripheral structure of the boarding / alighting step 120L, the peripheral structure of the boarding / alighting step 120R is also the same.

The boarding / alighting steps 120L and 120R are parts that are used as a foothold (foot is placed) when the worker gets on and off the chairs 13L and 13R. The boarding / alighting steps 120L and 120R are provided between the machine body 2 and the rear wheels (wheels) 4L and 4R and in front of or behind the chairs 13L and 13R. In the case of the present embodiment, the boarding / alighting step 120L is provided between the aircraft 2 and the rear wheels 4L and behind the chair 13L. Further, the boarding / alighting step 120R is provided between the aircraft 2 and the rear wheel 4R and behind the chair 13R.

Further, the boarding / alighting step 120L is provided between the chair 13L and the first grip portion 91L in the body width direction. The boarding / alighting step 120R is provided between the chair 13R and the second grip portion 91R in the width direction of the machine body.
Further, the boarding / alighting step 120L is located between the mounting table 121L on which the irrigation tank T is placed and the rear wheels (wheels) 4L. The boarding / alighting step 120R is located between the mounting table 121R and the rear wheels (wheels) 4R. The mounting table 121L is fixed at a position closer to the rear on the left side of the machine body 2, and is located between the body 2 and the rear wheels (wheels) 4L. The mounting table 121R is fixed at a position closer to the rear on the right side of the machine body 2, and is located between the body 2 and the rear wheels (wheels) 4R.

As shown in FIG. 25, the irrigation tank T is mounted on the mounting tables 121L and 121R in a direction in which the length in the width direction of the machine body is shorter than the length in the front-rear direction. As shown in FIG. 26, the mounting table 121L has an inner mounting plate 121a arranged on the inner side of the machine body and an outer mounting plate 121b arranged on the outer side of the machine body. The inner mounting plate 121a and the outer mounting plate 121b are supported by a support 122 extending from the machine body 2 to the outside of the machine body, and are fixed to the rear portion of the deck 10L via a fixing member 123. The inner mounting plate 121a and the outer mounting plate 121b may be composed of one plate material. The structure of the mounting table 121R is the same as that of the mounting table 121L.

As shown in FIG. 26, the boarding / alighting steps 120L and 120R have a step plate 120a, a front connecting plate 120b, and a rear connecting plate 120c. The step plate 120a is a plate on which the operator puts his / her feet on the decks 10L and 10R. The front connecting plate 120b extends upward from the front portion of the step plate 120a. The rear connecting plate 120c extends upward from the rear portion of the step plate 120a. The ends of the front connecting plate 120b and the rear connecting plate 120c on the in-machine side are connected to the mounting tables 121L and 121R. As a result, the inside of the boarding / alighting steps 120L and 120R in the width direction of the machine body is connected to the mounting bases 121L and 121R.

As shown by arrows and virtual lines in FIGS. 25 and 26, the boarding / alighting steps 120L and 120R can swing upward or downward with respect to the mounting tables 121L and 121R. As a result, the boarding / alighting steps 120L and 120R have the first posture in which the step portion 120a is extended downward toward the chairs 13L and 13R (see the virtual line in FIG. 25 and the solid line in FIG. 26) and the step portion 120a on the aircraft 2 side. The posture can be changed to the second posture (see the solid line in FIG. 25 and the virtual line in FIG. 26) for storing (folding) the chair.

As shown in FIGS. 26 and 31, in the first posture, the step plate 120a is arranged so as to be substantially parallel (approximately horizontal) to the ground with one surface facing upward and the other surface facing downward. NS. The step plate 120a is provided at a position lower than the seating surface of the chairs 13L and 13R in the first posture. More specifically, the step plate 120a is provided at a position lower than the support shaft 106. By setting the boarding / alighting steps 120L and 120R as the first posture, the operator can get on and off the chairs 13L and 13R using the step plate 120a as a foothold (on the step plate 120a). Specifically, in a state where the rear wheels 4L and 4R of the transplanting machine 1 are in the furrows (ridge grooves), the operator puts his or her foot on the step plate 120a from behind the rear wheels 4L and 4R through the furrows, and the grip portion 91L, You can ride on the chairs 13L and 13R while holding the 91R by hand. Further, the operator can move from the chairs 13L and 13R to the step plate 120a and descend into the furrow while gripping the grip portions 91L and 91R by hand.

Further, as shown in FIGS. 25 and 27, in the second posture, the step plate 120a is substantially perpendicular to the ground with one side facing the inside of the machine and the other side facing the outside of the machine. Arranged so as to be (vertical). By setting (folding) the boarding / alighting steps 120L and 120R in the second posture, the chairs 13L and 13R and the rear wheels 4L and 4R can be brought close to the aircraft 2 (see FIG. 27). The width of the transplanting machine 1 (length in the width direction of the machine body) can be shortened by setting the boarding / alighting steps 120L and 120R as the second posture and bringing the chairs 13L and 13R and the rear wheels 4L and 4R closer to the machine body 2. can. As a result, the handleability (portability) when transporting the transplant machine 1 is improved, and the space required for storage can be reduced.

The operation of moving the chairs 13L, 13R and the rear wheels 4L, 4R closer to or away from the aircraft 2 can be performed by the above-mentioned moving mechanism. The moving mechanism makes the chairs 13L, 13R and the rear wheels 4L, 4R close to the aircraft 2 when the boarding / alighting steps 120L, 120R are in the second position.
Next, the decks 10L and 10R and the operation pedal 200 will be described.

As shown in FIGS. 25 and 27 to 31, the porting machine 1 includes decks (footrests) 10L and 10R. The decks 10L and 10R are made of, for example, a metal plate or the like. The decks 10L and 10R are provided above the support shaft 106.
As shown in FIGS. 25 and 28, the decks 10L and 10R have an anterior portion 10a and a posterior portion 10b. The upper surface of the front portion 10a and the upper surface of the rear portion 10b have the same height. The front portion 10a and the rear portion 10b may be composed of one plate material or may be composed of separate plate materials. The rear portion 10b is provided inside the aircraft of the chairs 13L and 13R, and is located in front of the worker seated on the chairs 13L and 13R. The front portion 10a is provided inside and in front of the chairs 13L and 13R. The front part 10a of the deck 10L is located diagonally to the front and left of the worker seated on the chair 13L. The front portion 10a of the deck 10R is located diagonally forward and to the right of the worker seated on the chair 13R.

The rear portion 10b is formed to have a shorter length in the body width direction than the front portion 10a. In other words, the front part 10a and the rear part 10b form a step in the width direction of the machine body. By utilizing this step, the chairs 13L and 13R and the rear wheels 4L and 4R can be brought close to the aircraft 2 (relative to the rear portion 10b).
The decks 10L and 10R are located at the feet of the worker sitting on the chairs 13L and 13R facing the inside of the aircraft. Therefore, a worker who supplies seedlings to the planting cup can put his feet on the decks 10L and 10R during the work.

The decks 10L and 10R are provided in front of the boarding / alighting steps 120L and 120R and at a position higher than the boarding / alighting steps 120L and 120R. Specifically, the deck 10L is provided in front of the boarding / alighting step 120L and at a position higher than the boarding / alighting step 120L. The deck 10R is provided in front of the boarding / alighting step 120R and at a position higher than the boarding / alighting step 120R. As a result, the decks 10L and 10R can be used as an intermediate step in which the operator can get on the board while moving from the boarding / alighting steps 120L / 120R to the chairs 13L / 13R, or from the chairs 13L / 13R to the boarding / alighting steps 120L and 120R. It is available.

As shown in FIGS. 25 and 28, the operation pedal 200 is arranged above the decks 10L and 10R. The operation pedal 200 is arranged between the seedling supply unit 12 and the chairs 13L and 13R. The operation pedal 200 is extended toward the outside of the machine body, and can be operated by a worker seated on the chairs 13L and 13R by stepping on it with his / her foot. The operation pedal 200 is a pedal capable of blocking power transmission from the prime mover E1 to the rear wheels 4L and 4R. The operation pedal 200 is also a pedal capable of cutting off power transmission from the prime mover E1 to the transplanting unit 11 and the seedling supply unit 12. Hereinafter, in the description of the operation pedal 200, the rear wheels 4L and 4R, the transplanting unit 11 and the seedling supply unit 12 are collectively referred to as "rear wheels and the like".

The operation pedal 200 includes a first operation pedal 201, a second operation pedal 202, and a third operation pedal 203. On one side (left side) of the machine body 2 in the width direction, the first operation pedal 201, the second operation pedal 202, and the third operation pedal 203 are arranged side by side in the front-rear direction. In the case of the present embodiment, the first operation pedal 201, the second operation pedal 202, and the third operation pedal 203 are arranged side by side in order from the rear. Only the first operation pedal 201 is arranged on the other side (right side) of the machine body 2 in the width direction.

The first operation pedal 201 is arranged above the rear portion 10b of the decks 10L and 10R. The second operation pedal 202 is arranged above the rear portion 10b of the deck 10L. The third operation pedal 203 is arranged above the front portion 10a of the deck 10L.
The first operation pedal 201 is a temporary stop clutch pedal that cuts off power transmission from the prime mover E1 to the wheels and the like during operation and allows power transmission from the prime mover E1 to the wheels and the like when not in operation. Specifically, the first operation pedal 201 cuts off power transmission to the wheels, etc. only when the operator steps on it with his / her foot and pushes it toward the inside of the aircraft, and returns to the original position when the foot is released to return to the wheels, etc. Allows power transmission.

Since the first operation pedal 201 is provided on the left side and the right side of the machine body 2, both the worker seated on the chair 13L and the worker seated on the chair 13R can operate the first operation pedal 201, respectively. can. Therefore, if a problem occurs during the work, at least one of the worker seated on the first chair 13L and the worker seated on the second chair 13R operates by stepping on the first operation pedal 201. By doing so, the power transmission from the prime mover E1 to the rear wheels and the like can be cut off, and the work can be temporarily interrupted. Then, when the problem is resolved, the work can be resumed by allowing the power transmission from the prime mover E1 to the rear wheels or the like by taking the foot off the first operation pedal 201.

The first operation pedal 201 is provided separately from the operation lever 93 (see FIGS. 30 and 31). Therefore, the first operation pedal 201 and the operation lever 93 can be used properly according to the situation. For example, when the work is finished or interrupted for a long time, the power transmission from the prime mover E1 to the rear wheels or the like is cut off by manually operating the operation lever 93 to disengage the main clutch. On the other hand, when the work is temporarily interrupted (only for a short time) or in an emergency where the operation lever 93 cannot be operated by hand in time, the first operation pedal 201 can be operated by the foot to operate the prime mover E1. It is possible to cut off the power transmission from the vehicle to the rear wheels and the like.

The second operation pedal 202 is a right-handed clutch pedal capable of cutting off power transmission from the prime mover E1 to the right wheel (rear wheel 4R). The third operation pedal 203 is a left steering clutch pedal capable of blocking power transmission from the prime mover E1 to the left wheel (rear wheel 4L). When the operator operates the right-handed clutch pedal (steps on it with his / her foot), the transplant machine 1 turns to the right. When the operator operates the left-handed clutch pedal (steps on it with his / her foot), the transplant machine 1 turns to the left.

Since the first operation pedal 201, the second operation pedal 202, and the third operation pedal 203 are extended toward the outside of the machine body, the worker seated on the chairs 13L and 13R is in a posture facing the inside of the machine body. You can stretch your legs and step on them without changing. Therefore, the operability is excellent, and quick and reliable operation is possible.
Hereinafter, the effect of the transplanting machine 1 of the above embodiment will be described.

The transplanting machine 1 includes a machine body 2, a plurality of planting tools 37L, 37R, 38L, 38R arranged side by side in the width direction of the machine body and planting seedlings in the ridges, a plurality of grounding members 160 grounding on the ridges, and a plurality of grounding members 160. A plurality of support members 170 that swingably support the grounding member 160 upward or downward with respect to the machine body 2 and a plurality of support members 170 are connected, and the ridge height is determined based on the swing of the support member 170. It includes a ridge height detecting member 180 for detecting.

According to this configuration, a plurality of support members 170 that support a plurality of grounding members 160 in which the ridge height detecting member 180 touches the ridges are connected, and the ridge height is detected based on the swing of the supporting members 170. By doing so, it is possible to accurately detect the average ridge height in consideration of the variation in the height of the plurality of ridges.
Further, the plurality of planting tools include a first planting tool 37L capable of planting seedlings in one of the adjacent ridges and a second planting tool capable of planting seedlings in the other ridge of the adjacent ridges. The plurality of grounding members 160 include the first grounding member 161L provided on the first planting tool 37L side and the second grounding member 161R provided on the second planting tool 37R side. The plurality of support members 170 include a first support member 171L that supports the first grounding member 161L and a second support member 171R that supports the second grounding member 161R, and the ridge height detecting member 180 is the first support. The member 171L and the second support member 171R are connected.

According to this configuration, by detecting the heights of two adjacent ridges by the ridge height detecting member 180, the variation in the heights of the plurality of ridges is taken into consideration while considering the heights of the two adjacent ridges. It is possible to accurately detect the average ridge height.
Further, the first support member 171L and the second support member 171R are arranged in the central portion in the machine body width direction, and the ridge height detection member 180 is the first support member 171L and the first support member 171L arranged in the central portion in the machine body width direction. 2 Support member 171R is connected.

According to this configuration, the ridge height detecting member 180 can detect the heights of two adjacent ridges at the central portion in the body width direction among the plurality of ridges arranged in the machine body width direction. Therefore, even when the number of ridges is large, it is possible to accurately detect the average ridge height in consideration of the variation in the height of a plurality of ridges while adopting a relatively simple structure.
Further, the plurality of planting tools are the third planting tool 38L arranged on the opposite side of the first planting tool 37L from the second planting tool 37R, and the second planting tool 37R. The plurality of grounding members include the third grounding member 162L provided on the third planting tool 38L side and the fourth planting member 38R, which includes the fourth planting tool 38R arranged on the side opposite to the one planting tool 37L. It includes a fourth grounding member 162R provided on the attachment 38R side.

According to this configuration, in the 4-row planting transplanter 1, it is possible to accurately detect the average ridge height in consideration of the variation in the height of a plurality of ridges while adopting a relatively simple structure.
Further, the support member 170 includes a support arm 173 that rotatably supports the ground contact member 160, and a swing arm 174 that swingably supports the support arm 173 upward or downward with respect to the machine body 2. The ridge height detecting member 180 connects adjacent support arms 173 in the width direction of the machine body.

According to this configuration, the support member 170 is made to follow the change in the height of the ridges and is surely swung, and the ridge height detecting member 180 considers the variation in the heights of the plurality of ridges. Can be detected accurately.
Further, the transplanting machine 1 includes a machine body 2 provided with a transplanting portion 11 for planting seedlings in a field, wheels 4L and 4R provided on the side of the machine body 2, and chairs 13L provided above the wheels 4L and 4R. 13R and wheels 4L. An elevating mechanism (airframe elevating mechanism) that elevates and lowers the aircraft 2 relative to 4R, and a sway that covers at least the tread portion of the wheels 4L and 4R and swings upward or downward following the elevating and lowering of the aircraft 2. It includes a protective cover 110 having a moving portion 114.

According to this configuration, in a transplant machine having an elevating mechanism for elevating and lowering the body 2 with respect to the wheels 4L and 4R, the swinging portion 114 of the protective cover 110 swings upward or downward following the elevating and lowering of the body 2. This makes it possible to prevent the operator's foot from coming into contact with the tread portion of the wheels 4L and 4R.
Further, the protective cover covers at least the tread portion of the wheels 4L and 4R and covers the tread portion of at least the wheels 4L and 4R and the swing portion 114 of the first protective cover 111L and 111R that move as the aircraft 2 moves up and down. Includes second protective covers 112L, 112R, and the like.

According to this configuration, the tread portions of the wheels 4L and 4R are covered by the first protective covers 111L and 111R that move as the machine body 2 moves up and down and the second protective covers 112L and 112R having the swinging portion 114. Therefore, it is possible to more reliably prevent the operator's foot from coming into contact with the tread portion of the wheels 4L and 4R.
Further, the swinging portion 114 swings following the ascending / descending of the machine body 2, so that the first protective covers 111L and 111R cover the portions separated from the tread portion due to the movement.

According to this configuration, it is possible to prevent the operator's feet from being pinched between the first protective covers 111L and 111R and the second protective covers 112L and 112R when the machine body 2 is raised and lowered. Further, when the machine body 2 is raised, it is possible to prevent the operator's foot from coming into contact with the tread portion of the wheels 4L and 4R.
Further, the swinging portion is a first swing that is swingably connected to the front portion of the substrate and swings upward or downward as the substrate 113 moves up and down. A portion 114F and a second swinging portion 114B that is swingably connected to the rear portion of the substrate 2 and swings upward or downward as the substrate 113 moves up and down are included.

According to this configuration, the upper part of the front part and the upper part of the rear part of the wheels 4L and 4R can be covered by the swinging portion in response to the raising and lowering of the substrate 113 accompanying the raising and lowering of the machine body 2, so that the operator's foot is the wheel 4L. , It is possible to more reliably prevent contact with 4R.
Further, the first protective covers 111L and 111R are located at the first position when the body 2 is lowered, and are located at a second position different from the first position when the body 2 is raised, and the second swinging portion 114B is the first. When the protective covers 111L and 111R are in the first position, they are inclined at a first angle with respect to the substrate 113 to abut the first protective cover, and when the first protective cover is in the second position, they are in contact with the substrate 113. It tilts at a second angle different from the first angle and comes into contact with the first protective cover.

According to this configuration, the angle of inclination of the second swinging portion 114B with respect to the substrate 113 changes in response to the change in the positions of the first protective covers 111L and 111R as the machine body 2 moves up and down, so that the machine body 2 moves up and down. The gap (space) generated between the substrate 113 and the first protective covers 111L and 111R can be closed by the second swinging portion 114B. As a result, it is possible to prevent the operator's feet from being pinched between the first protective covers 111L and 111R and the second protective covers 112L and 112R when the machine body 2 is raised and lowered.

Further, the support shaft 106 extending laterally from the machine body 2 and the chair support supporting the chairs 13L and 13R with respect to the support shaft 106 are provided, and the first swing portion 114F lowers the body 2. Occasionally, it tilts with respect to the substrate 113 at a third angle and abuts on the support shaft 106, and when the machine body 2 rises, it tilts with respect to the substrate 113 at a fourth angle different from the third angle and abuts on the support shaft 106.
According to this configuration, the support shaft 106 can be reliably covered by the first swinging portion 114F in response to the raising and lowering of the machine body 2, so that the operator's foot comes into contact with the support shaft 106 and the support shaft 106 is supported. It is possible to prevent the wheels 4L and 4R from coming into contact with each other through the gap between the shaft 106 and the protective cover 110.

Further, the transplanting machine 1 attaches the body 2 and the planting tools 37L, 37R, 38L, 38R for planting seedlings to the ridges by raising and lowering, the grounding member 160 grounding on the upper surface of the ridges, and the grounding member 160 with respect to the body 2. A support member 170 that swings upward or downward, a ridge height detection member 180 that is connected to the support member 170 and detects the height of the ridge based on the swing of the support member, and a support member 170. The soil removing member 190 is attached to the planting tool and scrapes off the soil adhering to the surface of the planting tool when the planting tools 37L, 37R, 38L, and 38R are raised and lowered.

According to this configuration, since the soil removing member 190 is attached to the support member 170 that supports the grounding member 160, the soil removing member 190 can be provided as an attachment to the ridge height detecting mechanism. Therefore, the soil removing member 190 can be provided in a small space without requiring a dedicated space for providing the soil removing member 190. In addition, the soil can be reliably scraped off while simplifying the configuration of the soil removing member 190.

Further, the grounding member includes a plurality of grounding members 160 provided side by side in the machine width direction, and the support member includes a plurality of support members 170 provided side by side in the machine body width direction and adjacent to each other in the machine body width direction. A connecting member 177 for connecting the support member 170 is provided.
According to this configuration, since the connecting member 177 connects the supporting members 170 adjacent to each other in the width direction of the machine body, the strength of the supporting member 170 is improved. Further, since the adjacent support members 170 swing in conjunction with each other, the ridge height detecting member 180 can detect the ridge height and the soil removing member 190 can remove the soil accurately and reliably.

Further, the grounding member 160 is arranged on one side of the planting tools 37L, 37R, 38L, 38R in the body width direction, while the grounding members 161La, 161Ra, 162La, 162Ra and the other side of the planting tool in the body width direction. The support member 170 includes a support arm 173 that rotatably supports the one ground member and the other ground member, and a support arm 173 with respect to the machine body 2, including the other ground member 161Lb, 161Rb, 162Lb, 162Rb arranged in. It has a swing arm 174 that swings upward or downward, and the soil removing member 190 is attached to the support arm 173.

According to this configuration, by attaching the soil removing member 190 to the support arm 173, the soil removing member 190 can be arranged in the vicinity of the grounding member 160. The soil removing member 190 can be reliably brought into contact with the soil removing member 190.
Further, the support arm 173 connects one arm 173L that rotatably supports one grounding member, the other arm 173R that rotatably supports the other grounding member, and one arm 173L and the other arm 173R, and is a swing arm. It has a connecting arm 173M connected to 174, and the soil removing member 190 is attached to the connecting arm 173M.

According to this configuration, since the soil removing member 190 can be arranged between the one arm 173L and the other arm 173R, the soil removing member can effectively utilize the space between the one arm 173L and the other arm 173R. 190 can be placed.
Further, the transplanting machine 1 includes a machine body 2, an irrigation tank T mounted on the machine body 2, a seedling supply unit 12 provided on the machine body 2 and supplied with seedlings to be planted in the field, and planting of seedlings in the field. The tools 37L to 38R, the guide members 88L to 89R for guiding the seedlings supplied from the seedling supply unit 12 to the planting tool, and the tubes for guiding the water supplied from the irrigation tank T to the guide members 88L to 89R. The tubes 94 and 95 are provided with the positions of the tip portions with respect to the guide members 88L to 89R.

According to this configuration, the direction of water discharge from the tips of the tubes 94 and 95 can be stabilized by maintaining the positions of the tips of the tubes 94 and 95 with respect to the guide members 88L to 89R. Therefore, the soil adhering to the planting tools 37L to 38R can be easily removed by discharging water from the tips of the tubes 94 and 95. Further, by discharging water from the tips of the tubes 94 and 95, the seedlings can be smoothly separated from the planting tools 37L to 38R, and the seedlings can be planted reliably.

Further, the guide members 88L to 89R have a mounting portion 96 to which the tubes 94 and 95 can be mounted, and the tip portion of the tubes 94 and 95 can discharge water toward the inner surface of the planting tools 37L to 38R. It is attached to.
According to this configuration, by mounting the tips of the tubes 94 and 95 on the mounting portion 96, the tip is held at a position where water can be discharged toward the inner surface of the planters 37L to 38R. By discharging water from the tips of the tubes 94 and 95, the soil adhering to the planting tools 37L to 38R can be smoothly removed.

Further, the guide members 88L to 89R have a plurality of mounting portions 96A and 96B, and the tubes 94 and 95 are the main tubes 94La, 94Ra, 95La and 95Ra whose base end side is connected to the irrigation tank T and the main tube. It has branch portions 94Lb, 94Rb, 95Lb, 95Rb provided on the tip side, and branch tubes 94Lc, 94Rc, 95Lc, 95Rc branched from the branch portion and mounted on the plurality of mounting portions 96A and 96B, respectively. doing.

According to this configuration, water can be discharged from the branch tubes 94Lc, 94Rc, 95Lc, 95Rc mounted on the plurality of mounting portions 96A and 96B, respectively, so that the soil adhering to the planting tools 37L to 38R can be removed more reliably. This makes it possible to further facilitate the separation of seedlings from the planting tools 37L to 38R.
Further, the front frames 29 arranged in front of the guide members 88L to 89R and the side frames 50L and 50R extending rearward from the outer side in the body width direction of the front frame 29 are provided, and the main tubes 94La and 94Ra are provided. , 95La, 95Ra are attached along the front frame 29 and the side frames 50L, 50R.

According to this configuration, the main tubes 94La, 94Ra, 95La, 95Ra are attached along the front frame 29 and the side frames 50L, 50R, so that the tubes 94, 95 can be positioned and stably held. It is possible to prevent the tubes 94 and 95 from interfering with the arrangement and operation of other members. In addition, contact with the tubes 94 and 95 from the outside is less likely to occur, and detachment and damage of the tubes 94 and 95 from the mounting portion are less likely to occur.

Further, the transplanting machine 1 is provided with a machine body 2 provided with a transplanting portion 11 for planting seedlings in a field, wheels 4L and 4R for supporting the machine body 2 so as to be able to travel, and a worker on the side of the machine body 2. The chairs 13L and 13R that sit facing inward in the direction, the prime mover E1 mounted on the fuselage 2, and the operation pedal that can cut off the power transmission from the prime mover E1 to the wheels 4L and 4R, and are outward in the width direction of the fuselage. It is equipped with an operation pedal 200 that is extended toward the wheel and can be operated by an operator who is seated on the chairs 13L and 13R.

According to this configuration, the worker seated on the chairs 13L and 13R facing inward in the width direction of the machine is in a situation such as transplantation (the situation in front of the traveling transplanter and the rear of the transplanter) during the transplantation work. The status of the seedlings that have been planted, the status of the transplanting unit 11 and the seedling supply unit 12, etc.) can be easily grasped, and the operation pedal 200 can be quickly operated by stretching the legs without changing the posture according to the situation. Can be done.

Further, the operation pedal 200 is a temporary stop clutch pedal (first operation pedal) 201 that cuts off power transmission to the wheels 4L and 4R during operation and allows power transmission to the wheels 4L and 4R when not in operation. including.
According to this configuration, for example, when a problem occurs during work, an operator seated on the chairs 13L and 13R operates the operation pedal (first operation pedal 201) from the prime mover E1 to the wheels 4L. By blocking the power transmission to the 4R, the work can be temporarily interrupted. Then, when the problem is solved, the work can be resumed by allowing the power transmission from the prime mover E1 to the wheels 4L and 4R by not operating the operation pedal (first operation pedal 201).

Further, a seedling supply unit 12 for supplying seedlings to the transplant unit 11 is provided, and the operation pedal 200 is arranged between the seedling supply unit 12 and the chairs 13L and 13R.
According to this configuration, the worker seated on the chairs 13L and 13R does not change his / her posture even during the work of supplying the seedlings to the seedling supply unit 12 while facing the inside of the machine. The operation pedal 200 can be operated quickly. Further, since the seedling supply work to the seedling supply unit 12 can be performed without being hindered by the operation of the operation pedal 200, the workability is improved.

Further, an operation lever 93 capable of blocking power transmission from the prime mover E1 to the wheels 4L and 4R is provided, and the operation pedal (first operation pedal 201) is provided separately from the operation lever 93.
According to this configuration, the operation pedal (first operation pedal 201) and the operation lever 93 can be used properly according to the situation. For example, when the work is finished or when the operation lever 93 is interrupted for a long time, the operation lever 93 is operated, and when the work is temporarily interrupted (only for a short time) or when the operation lever 93 is not operated in time in an emergency. The operation pedal (first operation pedal 201) can be operated.

Further, the wheels include a right wheel 4R that supports the right part of the body 2 and a left wheel 4L that supports the left part of the body 2, and the operation pedal 200 transmits power from the prime mover E1 to the right wheel 4R. It includes a right-handed clutch pedal (second operation pedal 202) that can be cut off, and a left-hand steering clutch pedal (third operation pedal 203) that can cut off power transmission from the prime mover E1 to the left wheel 4L.
According to this configuration, the worker seated on the chairs 13L and 13R facing inward in the width direction of the machine body makes a right turn and a left turn of the transplant machine 1 by stretching his / her legs without changing his / her posture. And has excellent operability.

Further, the temporary stop clutch pedal (first operation pedal 201), the right steering clutch pedal (second operation pedal 202), and the left steering clutch pedal (third operation pedal 203) are arranged side by side in the front-rear direction. There is.
According to this configuration, an operator seated on the chairs 13L and 13R facing inward in the width direction of the machine body can operate the three operation pedals by extending his / her legs without changing his / her posture. Excellent in sex.

Further, the transplanting machine 1 includes a machine body 2 provided with a transplanting portion 11 for planting seedlings in a field, and chairs 13L and 13R provided on the side of the machine body 2 and in which an operator sits facing inward in the width direction of the machine body. It is provided on the machine body 2 and includes a grip portion 91 that is manually gripped when the operator sits on the chairs 13L and 13R.
According to this configuration, the operator can move from the field to the chairs 13L and 13R while gripping the grip portion 91 by hand, so that the worker can easily move from the field to the chairs 13L and 13R. ..

Further, the grip portion 91 is provided on the machine body 2 in front of or behind the chairs 13L and 13R.
According to this configuration, an operator heading for the chairs 13L and 13R from the front or the rear of the machine body 2 can grip the grip portion 91 and get on and off the chairs 13L and 13R.
Further, the boarding / alighting steps 120L and 120R provided between the grip portion 91 and the chairs 13L and 13R are provided.

According to this configuration, the operator can get on and off the chairs 13L and 13R while gripping the grip portion 91 on the getting on and off steps 120L and 120R, so that the worker can easily get on and off the chairs 13L and 13R.
Further, the chair includes a first chair 13L arranged on one side in the machine width direction and a second chair 13R arranged on the other side in the machine width direction, and the grip portion is on one side in the machine width direction. The first grip portion 91L arranged in the above and the second grip portion 91R arranged on the other side in the width direction of the machine body are included.

According to this configuration, an operator heading for the first chair 13L from the rear of the machine body 2 can grip the first grip portion 91L and sit on the first chair 13L. Further, an operator heading for the second chair 13R from the rear of the machine body 2 can grip the second grip portion 91R and sit on the second chair 13R.
Further, a connecting portion 92 extending in the machine width direction and connecting the first grip portion 91L and the second grip portion 91R is provided, and the first grip portion 91L is upward from one end of the connecting portion 92 in the machine width direction. The second grip portion 91R is extended and extends upward from the other end of the connecting portion 92 in the airframe width direction.

According to this configuration, the first grip portion 91L and the second grip portion 91R are connected by the connecting portion 92, so that the first grip portion 91L, the second grip portion 91R, and the connecting portion 92 are integrated. High strength can be ensured. Further, since the first grip portion 91L and the second grip portion 91R extend upward from the end portion of the connecting portion 92 in the width direction of the machine body, the position (height) and direction (upward) that the operator can easily grip are extended. ), The first grip portion 91L and the second grip portion 91R can be arranged.

Further, the grip portion 91 and the boarding / alighting steps 120L and 120R are provided behind the chairs 13L and 13R.
According to this configuration, an operator heading for the chairs 13L and 13R from the rear can easily sit on the chairs 13L and 13R while riding on the boarding / alighting steps 120L and 120R and gripping the grip portion 91.

Further, the transplanting machine 1 is provided between the machine body 2 provided with the transplanting portion 11 for planting seedlings in the field, the chairs 13L and 13R provided on the side of the machine body 2, and the body 2 and the chairs 13L and 13R. In addition, it is a boarding / alighting step having a step plate 120a on which a foot is placed, and is in a first posture in which the step plate 120a is extended downward toward the chairs 13L and 13R, and a second posture in which the step plate 120a is housed on the aircraft 2 side. It is equipped with changeable boarding / alighting steps 120L and 120R.

According to this configuration, the first posture can be set when getting on and off the chairs 13L and 13R using the boarding / alighting steps 120L and 120R, and the second posture can be set when not using the chairs 13L and 13R. Therefore, it is possible to assist the operation of getting on and off the chairs 13L and 13R when in use, and the getting on and off steps 120L and 120R do not get in the way when not in use.
Further, a moving mechanism for moving the chairs 13L and 13R closer to or away from the aircraft 2 is provided, and the moving mechanism can bring the chairs 13L and 13R closer to the aircraft 2 when the boarding / alighting steps 120L and 120R are in the second posture.
According to this configuration, the width of the transplanting machine 1 (length in the width direction of the machine body) is shortened by moving the chairs 13L and 13R closer to the machine body 2 after the boarding / alighting steps 120L and 120R are set as the second posture. Can be done. As a result, the handleability (portability) when transporting the transplant machine 1 is improved, and the space required for storage can be reduced.

Further, the wheels 4L and 4R provided on the side of the airframe 2 are provided, and the moving mechanism can bring the wheels 4L and 4R close to the airframe 2 when the boarding / alighting steps 120L and 120R are in the second posture.
According to this configuration, the width of the transplanting machine 1 can be shortened by setting the boarding / alighting steps 120L and 120R as the second posture and then bringing the wheels 4L and 4R closer to the machine body 2. As a result, the portability of the porting machine 1 can be improved, and the space required for storage can be reduced.

Further, the chair includes a first chair 13L arranged on one side in the aircraft width direction and a second chair 13R arranged on the other side in the aircraft width direction, and the boarding / alighting step is on one side in the aircraft width direction. The first boarding / alighting step 120L arranged in the aircraft and the second boarding / alighting step 120R arranged on the other side in the aircraft width direction are included.
According to this configuration, the postures of the boarding / alighting steps 120L and 120R can be changed on both one side and the other side in the width direction of the aircraft.

Further, mounting tables 121L and 121R on which the irrigation tank T is placed are provided between the machine body 2 and the wheels 4L and 4R, and the boarding / alighting steps 120L and 120R are connected to the mounting bases 121L and 121R on the inside in the width direction of the machine body. There is.
According to this configuration, the boarding / alighting steps 120L and 120R can be mounted by using the mounting tables 121L and 121R on which the irrigation tank T is placed. Further, by setting the boarding / alighting steps 120L and 120R in the second posture, the side surface of the irrigation tank T can be protected.

Further, the transplanting machine 1 includes a machine body 2 provided with a transplanting portion 11 for planting seedlings in a field, wheels 4L and 4R for supporting the body 2 so as to be able to travel, and a wheel cover (first) covering the upper and rear of the wheels 4L and 4R. Protective cover) 111L, 111R, and a scraper 130 that connects the center of the side surface of the wheel 4L, 4R and the wheel cover 111L, 111R and scrapes off the soil adhering to the side surface of the wheel 4L, 4R.

According to this configuration, the scraper 130 can scrape off the soil adhering to the side surfaces of the wheels 4L and 4R, and can reinforce the wheel covers 111L and 111R.
Further, the wheel covers 111L and 111R include an upper cover portion 111a that covers the upper part of the wheels 4L and 4R, and a rear cover portion 111b that extends downward from the rear end of the upper cover portion 111a and covers the rear of the wheels 4L and 4R. The scraper 130 connects the center of the side surface of the wheels 4L and 4R to the lower end of the rear cover portion 111b.

According to this configuration, since the wheel covers 111L and 111R are connected to the side center of the wheels 4L and 4R at the lower end of the rear cover portion 111b, the wheel covers 111L and 111R can be effectively reinforced and the scraper can be reinforced. The soil can be scraped off well by 130.
Further, the scraper 130 abuts on the first extending portion 131 extending from the center of the side surface of the wheels 4L and 4R to the rear cover portion 111b and the inner surface of the rear cover portion 111b from the first extending portion 131 in the wheel width direction. It has a second extending portion 132 that extends.

According to this configuration, the first extension 131 of the scraper 130 can scrape off the soil adhering to the side surfaces of the wheels 4L and 4R, and the second extension 132 effectively reinforces the rear cover 111b. can do.
Further, a support stay that connects the prime mover E1 that drives the wheels 4L and 4R, the transmission case 100 that houses the transmission mechanism that transmits the power of the prime mover E1 to the wheels 4L and 4R, and the transmission case 100 and the wheel covers 111L and 111R. The scraper 130 is connected to the wheel covers 111L and 111R together with the support stay 116.

According to this configuration, the wheel covers 111L and 111R can be effectively reinforced by both the support stay 116 connected to the transmission case 100 and the scraper 130 connected to the side center of the wheels 4L and 4R. Further, by connecting the support stay 116 and the scraper 130, the support stay 116 and the scraper 130 can mutually reinforce each other.

Although one embodiment of the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Transplanting machine 2 Machine 37L, 37R, 38L, 38R Planting tool 160 Grounding member 161La to 162Ra One grounding member 161Lb to 162Rb The other grounding member 170 Supporting member 173 Supporting arm 173L One arm 173R The other arm 173M Connecting arm 174 Swing arm 177 Connecting member 180 Ridge height detecting member 190 Soil removing member

Claims (6)

With the aircraft
A planting tool for planting seedlings in the ridges by raising and lowering,
A grounding member that touches the upper surface of the ridge,
A support member that swingably supports the grounding member upward or downward with respect to the airframe, and
A ridge height detection member that is connected to the support member and detects the height of the ridge based on the swing of the support member.
A soil removing member attached to the support member and scraping off the soil adhering to the surface of the planting tool when the planting tool is raised and lowered.
With
The grounding member includes a one-sided grounding member arranged on one side of the planting tool in the airframe width direction and the other grounding member arranged on the other side of the planting tool in the airframe width direction.
The planting tool has a first component on the front side and a second component on the rear side.
The soil removing member includes a front soil removing member arranged on the front side of the planting tool and a rear soil removing member arranged on the rear side of the planting tool.
The front soil removing member scrapes off the soil adhering to the surface of the first component.
The rear soil removing member scrapes off the soil adhering to the surface of the second component .
The support member includes a support arm that rotatably supports the ground contact member, and a swing arm that swingably supports the support arm upward or downward with respect to the airframe. The upper end of the moving arm is attached to a shaft body extending in the width direction of the machine body, which is arranged in front of the ridge height detecting member and the front side soil removing member and is supported by the front part of the machine body, and the shaft. The body swings as it rotates around the axis,
The front side soil removing member is arranged on the shaft body side and attached to the support arm on the front side, and the rear side is arranged on the side opposite to the shaft body and is in contact with the surface of the first component on the rear side and soil. A notch is formed to scrape off the soil, and the notch extends from the front of the first component to the rear toward the first component.
Further, the front soil removing member is located between the one grounding member and the other grounding member in the width direction of the machine body, and the position of the notch in the front-rear direction is the one grounding member and the other grounding member. A transplanting machine that overlaps with the grounding member and whose overall vertical position overlaps with the one grounding member and the other grounding member. The rear soil removing member extends forward from the rear of the second component toward the second component.
The transplanting machine according to claim 1, wherein the front soil removing member and the rear soil removing member are arranged so as to be displaced in the vertical direction. It has a chair on which the worker sits and a deck on which the worker rests his feet.
The transplant machine according to claim 1 or 2, wherein the rear soil removing member is attached to a connecting member connected to the front portion of the deck. The grounding member includes a plurality of grounding members provided side by side in the width direction of the machine body.
The support member includes a plurality of support members provided side by side in the width direction of the machine body.
The transplant machine according to any one of claims 1 to 3, further comprising a connecting member for connecting the support members adjacent to each other in the width direction of the machine body. The support arm rotatably supports the one grounding member and the other grounding member.
The transplanting machine according to any one of claims 1 to 4, wherein the front soil removing member is attached to the support arm. The support arm connects the one arm that rotatably supports the one grounding member, the other arm that rotatably supports the other grounding member, the one arm and the other arm, and the swing arm. With a connected connecting arm,
The transplant machine according to claim 5, wherein the front soil removing member is attached to the connecting arm.

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