JP7325387B2 - Seedling planting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a configuration of a seedling planting device installed in a riding-type rice transplanter.

The seedling planting device includes a seedling tray, a planting mechanism capable of planting the seedlings on the seedling tray on the field surface, a lateral feeder capable of laterally feeding the seedling tray, and a seedling on the seedling tray. A longitudinal feeding section capable of longitudinal feeding toward the mechanism is provided.

A comparatively large-sized seedling planting apparatus such as a 10-row planting type is configured as disclosed in Patent Document 1.
In Patent Document 1, a seedling planting device is configured to be separable into a right planting part and a left planting part, and in a normal planting operation, the right planting part and the left planting part are connected to each other. Working states arranged along a direction are set.

When a ride-on rice transplanter equipped with a seedling planting device is transported on a truck or stored in a warehouse, the lateral width of the right and left planting portions of the seedling planting device However, there is a non-working state in which the right planting portion and the left planting portion are separated and the posture is changed so that the lateral width over the right planting portion and the left planting portion is narrower than the width in the working state. set.

JP 2014-198011 A (see FIG. 10)

In the case where the seedling planting device is configured to be switchable between the working state and the non-working state, in Patent Document 1, the right feed case is provided in the right planting portion of the seedling planting device, and the left feed case is used for seedling planting. It is provided on the left planting part of the planting device.

In Patent Literature 1, the power transmitted to the right feed case is transmitted to the lateral feeding section, the planting mechanism, and the vertical feeding section of the right planting portion. The power of the vertical feeding part of the right planting part is transmitted to the left feed case via the transmission connection part, and the power transmitted to the left feed case is transmitted to the planting mechanism and the vertical feeding part of the left planting part. transmitted.

An object of the present invention is to appropriately configure a transmission system to a planting mechanism and a transmission system to a vertical feed unit in a seedling planting apparatus that can be switched between a working state and a non-working state.

The present invention comprises a seedling tray, a planting mechanism capable of planting seedlings on the seedling tray on a field surface, a lateral feeder capable of laterally feeding and driving the seedling tray, and a seedling on the seedling tray. A seedling planting device provided with a vertical feeding part that can be vertically fed toward a planting mechanism, the seedling planting device being configured to be separable into a right planting part and a left planting part, the right planting part and the aforesaid planting part. A working state in which the left planting portion is connected and arranged along the left-right direction, and a lateral width over the right planting portion and the left planting portion in the working state is the right planting portion and the A non-working state is set in which the right planting portion and the left planting portion are separated and their postures are changed so that the lateral width of the left planting portion is narrower than that of the right planting portion. A first input shaft to which power is input and a switching mechanism capable of switching the left planting portion and the left planting portion between the working state and the non-working state, and the power of the first input shaft is applied to the traversing section. A transmissible lateral feed shaft, a first planting transmission shaft capable of transmitting the power of the first input shaft to the planting mechanism, and a first power transmission of the first input shaft to the vertical feeding section a first feed case having a longitudinal feed transmission shaft and provided on one of the right planting portion and the left planting portion; a second input shaft; The other of the right planting portion and the left planting portion having a second planting transmission shaft capable of transmitting power to the planting mechanism and a second vertical feeding transmission shaft capable of transmitting power to the vertical feeding portion A second feed case provided in the working state connects the first input shaft and the second input shaft, and in the non-working state, the first input shaft and the second input shaft and a planting transmission connecting portion that separates the above, in the working state, connects the first vertical feed transmission shaft and the second vertical feed transmission shaft, and in the non-working state, the first vertical feed transmission shaft and A vertical feed transmission connecting portion separating the second vertical feed transmission shaft is provided.

In the seedling planting apparatus, the planting mechanism continuously plants seedlings, so the planting mechanism is always under load.
On the other hand, the seedling tray is laterally driven so as to reciprocate in the horizontal direction by the horizontal feeding section, and when the seedling tray reaches the right and left ends of the horizontal feeding, the seedling is fed by the vertical feeding section. Seedlings are fed vertically on the platform. As a result, no load is applied to the vertical feeding portion during the horizontal feeding of the seedling placement table, and the load is applied to the vertical feeding portion when the seedling placement table reaches the right end and left end of the horizontal feeding.

In the above state, according to the present invention, the power transmitted to the first input shaft of the first feed case is transmitted to the traversing portion in the first feed case, and the seedlings are planted through the first planting transmission shaft. Transmitted to one planting mechanism of the right planting part and the left planting part of the seedling planting device, and through the first vertical feed transmission shaft, one of the right planting part and the left planting part of the seedling planting device It is transmitted to the sending section.

The power of the first input shaft of the first feed case is transmitted to the second input shaft of the second feed case through the planting transmission connection, and the second input shaft of the second feed case is transmitted to the second feed case. is transmitted to the other planting mechanism of the right planting part and the left planting part of the seedling planting device through the second planting transmission shaft.
The power of the first vertical feed transmission shaft of the first feed case is transmitted from the second vertical feed transmission shaft of the second feed case to the right planting portion and the left planting portion of the seedling planting device through the vertical feed transmission connection portion. It is transmitted to the other longitudinal feed section of the part.

As mentioned above, according to the present invention, the power transmitted to the planting mechanism of the right planting part and the planting mechanism of the left planting part is transmitted from the first input shaft to the second input shaft to the first planting transmission. It passes through the shaft and the second planting transmission shaft, but does not pass through the first longitudinal feed transmission shaft and the second longitudinal feed transmission shaft.
Similarly, the power transmitted to the vertical feeding portion of the right planting portion and the vertical feeding portion of the left planting portion passes from the first input shaft through the first vertical feed transmission shaft and the second vertical feed transmission shaft, It does not pass through the first planting transmission shaft and the second planting transmission shaft.

According to the present invention, the transmission system to the planting mechanism and the transmission system to the vertical feeding unit are configured independently of each other for the planting mechanism and the vertical feeding unit that apply loads in different ways. The transmission to the planting mechanism can be configured to accommodate the load on the planting mechanism, and the transmission to the longitudinal feed can be configured to accommodate the load on the longitudinal feed.
As a result, the transmission system to the planting mechanism and the transmission system to the vertical feeding part can be configured appropriately while suppressing the mutual influence of the transmission system to the planting mechanism and the transmission system to the vertical feeding part. will be able to

The state described above is the working state of the seedling planting apparatus. When the non-working state of the seedling planting device is set, the first input shaft and the second input shaft are separated at the planting transmission connection portion, and the first vertical transmission transmission shaft is separated at the vertical transmission transmission connection portion. and the second longitudinal feed transmission shaft are separated. As a result, the non-working state of the seedling planting device can be obtained without difficulty.

In the present invention, in the working state, the first input shaft extends from the first feed case toward the second feed case, and the second input shaft extends from the second feed case to the first feed case. It is preferable that the planting transmission connecting portion extends toward the feed case and extends over the extended end portion of the first input shaft and the extended end portion of the second input shaft.

According to the present invention, in the operating state of the seedling planting apparatus, the first input shaft of the first feed case extends toward the second feed case, and the second input shaft of the second feed case extends toward the first feed case. extended towards.
As a result, when the seedling planting apparatus is switched from the non-working state to the working state, the first input shaft of the first feed case and the second input shaft of the second feed case are likely to face each other. , the planted transmission connection part (the first input shaft and the second input shaft) will be in a connected state without difficulty.

In the present invention, in the working state, the first longitudinal feed transmission shaft extends from the first feed case toward the second feed case, and the second longitudinal feed transmission shaft extends from the second feed case. extending from toward the first feed case, the longitudinal feed transmission connecting portion extending over the extended end portion of the first longitudinal feed transmission shaft and the extended end portion of the second longitudinal feed transmission shaft Preferably provided.

According to the present invention, in the operating state of the seedling planting apparatus, the first longitudinal feed transmission shaft of the first feed case extends toward the second feed case, and the second longitudinal feed transmission shaft of the second feed case extends toward the second feed case. Extends to 1 feed case.
As a result, when the seedling planting apparatus is switched from the non-working state to the working state, the first vertical feed transmission shaft of the first feed case and the second vertical feed transmission shaft of the second feed case face each other. Therefore, the longitudinal feed transmission connection portion (the first longitudinal feed transmission shaft and the second longitudinal feed transmission shaft) is naturally connected.

In the present invention, the transmission chain attached across the second input shaft and the second planted transmission shaft and capable of transmitting the power of the second input shaft to the second planted transmission shaft is the second It is preferable that the second longitudinal feed transmission shaft is provided in a feed case and extends in one direction and the other direction from the second feed case through the inside of the path of the transmission chain.

According to the present invention, in the second feed chain, a transmission chain is mounted across the second input shaft and the second planting transmission shaft, and the power of the second input shaft is transferred to the second planting transmission shaft through the transmission chain. is configured to be transmitted to

In the above-described state, according to the present invention, the second vertical feed transmission shaft passes through the transmission chain path and penetrates the second feed case along the left-right direction. Space can be effectively used to compactly support the second longitudinal feed transmission shaft in the second feed case.

It is a left side view of a riding type rice transplanter. It is a top view of a riding-type rice transplanter. It is a left view near the 1st feed case in a seedling planting apparatus. It is a right view near the 2nd feed case in a seedling planting apparatus. 1 is a schematic plan view of a seedling planting device in a working state; FIG. 1 is a schematic plan view of a seedling planting device in a non-working state; FIG. It is a schematic cross-sectional plan view which shows the transmission system of a seedling planting apparatus. FIG. 4 is a cross-sectional plan view of the first feed case; FIG. 5 is a cross-sectional plan view of a second feed case; It is a cross-sectional plan view of vicinity of a vertical feed part.

1 to 10 show a riding-type rice transplanter equipped with a seedling planting device 5 of the present invention. 1 to 10, F indicates the forward direction, B indicates the rearward direction, U indicates the upward direction, D indicates the downward direction, R indicates the right direction, and L indicates the left direction. .

(Overall configuration of ride-on rice transplanter)
As shown in FIGS. 1 and 2, the riding rice transplanter has a link mechanism 3 and a link mechanism 3 at the rear of a body 30 having right and left front wheels 1 and right and left rear wheels 2. A hydraulic cylinder 4 is provided, and a 10-row seedling planting device 5 is supported at the rear of the link mechanism 3 . A body 30 is provided with a driver's seat 18 on which a driver sits and a steering wheel 24 for steering the front wheels 1 .

(Overall configuration of seedling planting device)
As shown in FIGS. 1 and 2, the seedling planting device 5 has five planting transmission cases 6 arranged at predetermined intervals in the horizontal direction, and the planting transmission cases 6 rotate to the right and left. Rotating case 7 (corresponding to the planting mechanism) supported so as to be possible, planting arms 8 (corresponding to the planting mechanism) supported at both ends of the rotating case 7, one center float 9, four floats 10, A seedling tray 11 and the like are provided.

In the seedling planting device 5, the rotary case 7 is driven to rotate while the seedling tray 11 is laterally fed, and the planting arm 8 takes out the seedlings from the lower part of the seedling tray 11 and plants them on the field surface. When the placing table 11 reaches the right and left ends of the horizontal feed, the seedlings on the seedling placing table 11 are vertically fed toward the planting arm 8 below.

(Overall configuration of fertilizing device and chemical spraying device)
As shown in FIGS. 1 and 2, the fertilizing device 12 is supported over the rear part of the machine body 30 and the seedling planting device 5. A vessel 16, a hose 17, and the like are provided.

In the fertilizing device 12, a hopper 13 for storing fertilizer and a feed-out section 14 are provided on the rear side of the driver's seat 18 in the machine body 30, and a blower 15 is provided laterally to the left of the feed-out section 14. . A grooving device 16 is attached to the center float 9 and the float 10 , and a hose 17 is connected across the feeding portion 14 and the grooving device 16 .

In the fertilizing device 12, the fertilizer from the hopper 13 is delivered by the delivery portion 14, and is supplied to the grooving device 16 through the hose 17 by the conveying air of the blower 15, and the grooving device 16 forms grooves on the paddy surface. Fertilizer is supplied from the ditch making device 16 to the ditch of the paddy field.

A chemical spraying device 28 is supported by a support frame 29 connected to the central planting transmission case 6 , and a chemical such as a herbicide is sprayed from the chemical spraying device 28 onto the paddy field behind the seedling planting device 5 . be.

(Structure of switching between working state and non-working state in seedling planting device)
As shown in FIGS. 3, 4, and 5, a frame-shaped support frame 19 is provided, and the support frame 19 is mounted on the vertical link 3a at the rear of the link mechanism 3 and rolls around the axis P3 along the front-rear direction. supported as possible.

Right and left support arms 20 (corresponding to a switching mechanism) are held by the right and left portions of the support frame 19 so as to be swingable about an axis P1 along the vertical direction. Right and left support frames 21 and 22 are provided, and a connecting portion 23 is connected to the right and left support frames 21 and 22 . A connecting portion 23 of the right support frame 21 is supported by an end portion of the right support arm 20 so as to be swingable about an axis P2 extending in the vertical direction. A connecting portion 23 of the left support frame 22 is supported by an end portion of the left support arm 20 so as to be swingable around an axis P2 extending in the vertical direction.

Three planted transmission cases 6 are connected to the right support frame 21 and extend rearward from the right support frame 21, and a center float 9 and two floats 10 are connected to the right support frame 21. supported by In the seedling platform 11, the six right portions 11a of the seedling platform 11 are supported by the right supporting frame 21 and the three planting transmission cases 6. As shown in FIG.

Two planting transmission cases 6 are connected to the left support frame 22 and extend rearward from the left support frame 22 , and two floats 10 are supported by the left support frame 22 . there is In the seedling platform 11, the four left portions 11b of the seedling platform 11 are supported by the left support frame 22 and the two planting transmission cases 6. As shown in FIG.

The states shown in FIGS. 1 to 5 are the center side end of the seedling planting device 5 which is the left end of the right support frame 21 and the right end of the left support frame 22 of the seedling planting device. The right and left support frames 21 and 22 are arranged along the left-right direction, with the left and right center side ends of 5 facing each other with a space therebetween. In the working state A1 of the seedling planting device 5, the right portion 11a and the left portion 11b of the seedling platform 11 are connected.

In the working state A1 of the seedling planting device 5, the right planting portion (the portion supported by the right support frame 21) and the left planting portion (the portion supported by the left support frame 22) of the seedling planting device 5. are connected and arranged along the left-right direction.

(Switching operation from working state to non-working state in seedling planting device)
The switching operation from the working state A1 to the non-working state A2 in the seedling planting device 5 is performed as described below.

As shown in FIGS. 5 and 6, in the seedling platform 11, the right portion 11a and the left portion 11b of the seedling platform 11 are separated. Next, the right support frame 21 is swung around the axis P2 in the counterclockwise direction in FIG. 5, and the left support frame 22 is swung around the axis P2 in the clockwise direction in FIG. The left support arm 20 is swung backward around the axis P1.

As a result, as shown in FIG. 6, in the seedling planting device 5, the right and left planting portions of the seedling planting device 5 are separated and their postures are changed, and the right and left support frames 21 and 22 are separated. The non-working state A2 of the seedling planting device 5 is set by being arranged side by side in the left-right direction in a posture along the front-rear direction.

In the non-operating state A2 of the seedling planting device 5, the center side ends of the support frames 21 and 22 are arranged on the rear side with respect to the ends of the support frames 21 and 22 opposite to the center side ends. , the support frames 21 and 22 are arranged in a posture along the front-rear direction.

The lateral width of the right planting portion and the left planting portion of the seedling planting device 5 in the non-working state A2 of the seedling planting device 5 is the right planting portion of the seedling planting device 5 in the working state A1 of the seedling planting device 5. and the left-right width over the left planting portion (see FIG. 5).
The switching operation from the non-working state A2 to the working state A1 in the seedling planting device 5 may be performed in the reverse order of the above.

(Structure of lateral feeding of first feed case and seedling tray)
As shown in FIGS. 3 and 5, the first feed case 31 is connected to the right support frame 21. As shown in FIGS. An input shaft 25 is forwardly supported by the first feed case 31 , and the power of an engine (not shown) mounted on the machine body 30 is transmitted to the input shaft 25 via a transmission shaft 26 .

As shown in FIGS. 7 and 8, the first input shaft 33 is supported by the first feed case 31 along the horizontal direction. A bevel gear 25 a connected to the input shaft 25 and a bevel gear 33 a connected to the first input shaft 33 mesh with each other, and the power of the input shaft 25 is transmitted to the first input shaft 33 .

A traverse shaft 27 is supported by the first feed case 31 along the left-right direction, and a traverse speed change mechanism 39 capable of changing speed in four stages is provided across the first input shaft 33 and the traverse shaft 27. there is The power of the first input shaft 33 is transmitted to the traverse shaft 27 via the traverse transmission mechanism 39, and the traverse shaft 27 is rotationally driven.

The traverse shaft 27 extends right outside from the first feed case 31, and the end of the traverse shaft 27 is rotatably supported by the right connecting portion 23 via a support member 40 (see FIG. 5). reference). A helical groove is formed on the outer peripheral portion of the traverse shaft 27, a traverse portion 41 is attached to the helical groove of the traverse shaft 27, and the traverse portion 41 is connected to the right portion 11a of the seedling placement table 11. there is

In the working state A1 of the seedling planting device 5, the right portion 11a and the left portion 11b of the seedling platform 11 are connected. The power of the first input shaft 33 is transmitted to the traverse shaft 27 via the traverse speed change mechanism 39 , and the traverse shaft 27 is rotationally driven, thereby being transmitted to the traverse section 41 . The lateral feeding part 41 is laterally driven so as to reciprocate along the spiral groove of the lateral feeding shaft 27 , and the lateral feeding part 41 laterally feeds the seedling tray 11 so as to reciprocate.

(Configuration of transmission system for first feed case and planting)
As shown in FIGS. 3, 7 and 8, the first feed case 31 extends downward to the planting transmission case 6 position. The first planting transmission shaft 35 is supported along the left-right direction at the lower portion of the first feed case 31, and is connected to the sprocket 33b connected to the first input shaft 33 and the first planting transmission shaft 35. A transmission chain 42 is attached across the sprocket 35a.

A first planting transmission shaft 35 extends from the first feed case 31 to the right and left sides and is inserted into the front portions of the three planting transmission cases 6 to cover the first planting transmission shaft 35. A cylindrical cover 58 is provided. Inside the planted transmission case 6 , a sprocket 35 b is attached to the first planted transmission shaft 35 via a torque limiter 43 .

A drive shaft 44 is supported on the rear portion of the planted transmission case 6 , and the rotary case 7 is supported on the right and left portions of the drive shaft 44 . A sprocket 44a is attached to the drive shaft 44 via a few-thread clutch 45, and a transmission chain 46 is attached across the sprocket 35b of the first planted transmission shaft 35 and the sprocket 44a of the drive shaft 44. .

In the working state A1 of the seedling planting device 5, the power of the first input shaft 33 is transmitted to the first planting transmission shaft 35 through the transmission chain 42, and from the first planting transmission shaft 35, the torque limiter 43, the transmission The power is transmitted to the rotary case 7 via the chain 46, the few-thread clutch 45 and the drive shaft 44, and the rotary case 7 and the planting arm 8 of the right planting portion of the seedling planting device 5 are rotationally driven.

(Configuration of second feed case and transmission system for planting)
As shown in FIGS. 4 and 5, the second feed case 32 is connected to the left support frame 22. As shown in FIG. A second input shaft 34 is supported by the second feed case 32 along the left-right direction.

As shown in FIGS. 4, 7 and 9, the second feed case 32 extends downward to the planting transmission case 6 position. A second planting transmission shaft 36 is supported along the left-right direction at the lower portion of the second feed case 32 , and is connected to the sprocket 34 a connected to the second input shaft 34 and the second planting transmission shaft 36 . A transmission chain 47 is attached across the sprocket 36a.

A second planting transmission shaft 36 extends leftward from the second feed case 32 and is inserted into the front portions of the two planting transmission cases 6, and has a cylindrical shape covering the second planting transmission shaft 36. is provided. Inside the planted transmission case 6 , a sprocket 36 b is attached to the second planted transmission shaft 36 via a torque limiter 43 .

A drive shaft 44 is supported on the rear portion of the planted transmission case 6 , and the rotary case 7 is supported on the right and left portions of the drive shaft 44 . A sprocket 44a is attached to the drive shaft 44 via a few-thread clutch 45, and a transmission chain 46 is attached across the sprocket 36b of the second planted transmission shaft 36 and the sprocket 44a of the drive shaft 44. .

(Structure of planting transmission connection part)
As shown in FIGS. 5, 7 and 8, in the working state A1 of the seedling planting device 5, the second input shaft 34 is supported so as to extend from the second feed case 32 toward the first feed case 31. there is Similarly, in the working state A1 of the seedling planting device 5, the first input shaft 33 is supported so as to extend from the first feed case 31 toward the second feed case 32. As shown in FIG.

A spring 48c is provided at the extended end of the first input shaft 33. The engagement portion 48b is supported by a spline structure so as to be rotatable and slidable together with the first input shaft 33, and biases the engagement portion 48b. An engaging portion 48a is connected to the extended end of the second input shaft 34, and a planted transmission connection portion 48 having engaging portions 48a, 48b and a spring 48c is connected to the extended end of the first input shaft 33 and the second input shaft. 2 and the extension end of the input shaft 34 .

As shown in FIGS. 5, 7 and 8, in the working state A1 of the seedling planting device 5, the engaging portions 48a and 48b of the planting transmission connection portion 48 are engaged with each other, and the planting transmission connection portion 48 is engaged with the first input. The shaft 33 and the second input shaft 34 are connected.

In the state where the first input shaft 33 and the second input shaft 34 are connected by the planted transmission connection portion 48, as shown in FIGS. is transmitted to the second input shaft 34 via the The power of the second input shaft 34 is transmitted to the second planted transmission shaft 36 through the transmission chain 47, and from the second planted transmission shaft 36, the torque limiter 43, the transmission chain 46, the minority clutch 45 and the drive shaft 44 to the rotating case 7 to rotate the rotating case 7 and the planting arm 8 of the left planting portion of the seedling planting device 5 .

As shown in FIG. 6, in the non-operating state A2 of the seedling planting device 5, the engaging portions 48a and 48b of the planting transmission connection portion 48 are separated from each other, and the planting transmission connection portion 48 is engaged with the first input shaft 33 and the second input shaft 33. As shown in FIG. 2 input shaft 34 will be in a separated state.

(Configuration of first feed case and longitudinal feed transmission system)
As shown in FIGS. 3, 5, 7, and 8, the first vertical feed transmission shaft 37 is supported in the horizontal direction in the upper and lower intermediate portions of the first feed case 31, and is connected to the first input shaft 33. A transmission chain 49 is attached across the sprocket 33 c and the sprocket 37 a connected to the first longitudinal feed transmission shaft 37 .

The first vertical feed transmission shaft 37 extends to the right and left sides from the first feed case 31, and the right portion of the first vertical feed transmission shaft 37 can rotate to the right support frame 21 via the support member 54. supported by Right and left vertical feed arms 55 are connected to portions of the first vertical feed transmission shaft 37 corresponding to the right and left ends of the seedling placement table 11 for lateral feeding.

As shown in FIGS. 7 and 8, inside the first feed case 31, the rotating body 50 is rotatably attached to the first longitudinal feed transmission shaft 37, and the transmission chain 42 (the (first feed Case and planting transmission system configuration)) is hung on the rotating body 50 . As a result, the first longitudinal feed transmission shaft 37 passes through the inside of the path of the transmission chain 42 and extends from the first feed case 31 to one side and the other side.

As shown in FIGS. 2 and 3 , six belt-shaped vertical feeding units 51 are provided in the right portion 11 a of the seedling platform 11 . 6 sets of rotating cases 7 and planting arms 8 of the right planting part (three planting transmission cases 6).

As shown in FIGS. 3, 7 and 10, in the right planting portion of the seedling planting device 5, a vertical feeding shaft 52 is attached over the lower portions of the six vertical feeding portions 51. As shown in FIGS. A longitudinal feed drive portion 53 is attached to the longitudinal feed shaft 52 via a one-way clutch (not shown), and the input arms 53 a of the longitudinal feed drive portion 53 are connected to the right and left longitudinal feed shafts 37 of the first longitudinal feed transmission shaft 37 . It is arranged between the feed arms 55 .

As shown in FIGS. 7, 8 and 10, in the working state A1 of the seedling planting device 5, the power of the first input shaft 33 is transmitted to the first vertical feed transmission shaft 37 via the transmission chain 49, 1. The longitudinal feed transmission shaft 37 and the right and left longitudinal feed arms 55 are rotationally driven counterclockwise in FIG.

As described in (Constitution of lateral feeding of first feed case and seedling placement table), the seedling placement table 11 is laterally fed, and the seedling placement table 11 is positioned between the right end and the left end of the lateral feeding. , the input arm 53a of the vertical feed drive unit 53 is positioned between the right and left vertical feed arms 55, the right and left vertical feed arms 55 idle, and the vertical feed unit 51 and the vertical feed drive unit 53 is stopped.

When the seedling platform 11 reaches the right end (left end) of the horizontal feed, the input arm 53a of the vertical feed drive unit 53 reaches the right (left) vertical feed arm 55, and the right (left) vertical feed arm 55 is reached. 55 rotates by a predetermined angle. Along with this, the vertical feed drive section 53 rotates the vertical feed shaft 52 by a predetermined angle, and the vertical feed section 51 vertically feeds the seedlings on the seedling tray 11 toward the planting arm 8 below. This state is a state in which the power of the first input shaft 33 is transmitted to the vertical feed section 51 of the right planting portion of the seedling planting device 5 via the first vertical feed transmission shaft 37 .

(Configuration of second feed case and longitudinal feed transmission system)
As shown in FIGS. 4, 5, 7 and 9, the second vertical feed transmission shaft 38 is supported in the horizontal direction at the upper and lower intermediate portions of the second feed case 32 . A second longitudinal feed transmission shaft 38 extends to the right and left sides from the second feed case 32 , and the left portion of the second longitudinal feed transmission shaft 38 rotates to the left support frame 22 via a support member 54 . supported as possible. Right and left vertical feed arms 55 are connected to portions of the second vertical feed transmission shaft 38 corresponding to the right and left ends of the seedling placement table 11 for lateral feeding.

As shown in FIGS. 4, 7, and 9, inside the second feed case 32, a rotating body 56 is rotatably attached to the second longitudinal feed transmission shaft 38, and the transmission chain 47 (the (second feed case and planting transmission system configuration)) is hung on the rotating body 56 . As a result, the second longitudinal feed transmission shaft 38 passes through the inside of the path of the transmission chain 47 and extends from the second feed case 32 to one side and the other side.

As shown in FIGS. 2 and 4 , the left portion 11 b of the seedling platform 11 is provided with four belt-shaped vertical feeding units 51 . 4 sets of rotating cases 7 and planting arms 8 of the left planting part (two planting transmission cases 6).

As shown in FIGS. 4, 7 and 10, in the left planting portion of the seedling planting device 5, a vertical feeding shaft 52 is attached over the lower portions of the four vertical feeding portions 51. As shown in FIGS. A longitudinal feed drive portion 53 is attached to the longitudinal feed shaft 52 via a one-way clutch (not shown), and the input arms 53 a of the longitudinal feed drive portion 53 are connected to the right and left longitudinal feed shafts 38 of the second longitudinal feed transmission shaft 38 . It is arranged between the feed arms 55 .

(Structure of vertical feed transmission connection part)
As shown in FIGS. 5, 7 and 8, in the working state A1 of the seedling planting device 5, the second vertical feed transmission shaft 38 is supported so as to extend from the second feed case 32 toward the first feed case 31. It is Similarly, in the working state A1 of the seedling planting device 5, the first vertical feed transmission shaft 37 is supported so as to extend from the first feed case 31 toward the second feed case 32. As shown in FIG.

A spring 57c is provided at the extended end of the first longitudinal transmission shaft 37. The engagement portion 57b is supported by a spline structure so as to be integrally rotatable and slidable with the first longitudinal transmission shaft 37, and a spring 57c is provided to bias the engagement portion 57b. It is The interlocking portion 57a is connected to the extending end of the second longitudinal transmission shaft 38, and the longitudinal transmission connecting portion 57 having the interlocking portions 57a and 57b and the spring 57c extends from the first longitudinal transmission shaft 37. It is provided over the end portion and the extended end portion of the second longitudinal feed transmission shaft 38 .

As shown in FIGS. 5, 7 and 8, in the working state A1 of the seedling planting device 5, the interlocking portions 57a and 57b of the longitudinal feed transmission connection portion 57 are engaged with each other, and the longitudinal feed transmission connection portion 57 causes the first longitudinal The feed transmission shaft 37 and the second vertical feed transmission shaft 38 are connected.

When the first longitudinal transmission shaft 37 and the second longitudinal transmission shaft 38 are connected by the longitudinal transmission connecting portion 57, the power of the first input shaft 33 is transmitted to the transmission chain as shown in FIGS. 49 to the first vertical feed transmission shaft 37, and through the vertical feed transmission connecting portion 57 to the second vertical feed transmission shaft 38. The second vertical feed transmission shaft 38, right and left The longitudinal feed arm 55 is rotated clockwise in FIG.

As described in (Constitution of lateral feeding of first feed case and seedling placement table), the seedling placement table 11 is laterally fed, and the seedling placement table 11 is positioned between the right end and the left end of the lateral feeding. , the input arm 53a of the vertical feed drive unit 53 is positioned between the right and left vertical feed arms 55, the right and left vertical feed arms 55 idle, and the vertical feed unit 51 and the vertical feed drive unit 53 is stopped.

When the seedling platform 11 reaches the right end (left end) of the horizontal feed, the input arm 53a of the vertical feed drive unit 53 reaches the right (left) vertical feed arm 55, and the right (left) vertical feed arm 55 is reached. 55 rotates by a predetermined angle. Along with this, the vertical feed drive section 53 rotates the vertical feed shaft 52 by a predetermined angle, and the vertical feed section 51 vertically feeds the seedlings on the seedling tray 11 toward the planting arm 8 below. In this state, the power of the first input shaft 33 is transmitted from the first vertical feed transmission shaft 37 to the vertical feed portion 51 of the left planting portion of the seedling planting device 5 via the second vertical feed transmission shaft 38. state.

As shown in FIG. 6, in the non-operating state A2 of the seedling planting device 5, the engaging portions 57a and 57b of the vertical feed transmission connecting portion 57 are separated from each other, and the vertical feeding transmission connecting portion 57 moves the first vertical feed transmission shaft 37. and the second vertical feed transmission shaft 38 are separated.

(First alternative embodiment of the invention)
In the right planting portion of the seedling planting device 5, the right support frame 21 supports the two planting transmission cases 6, the two floats 10 and the four right portions 11a of the seedling rest 11. may be configured to

When configured as described above, in the left planting portion of the seedling planting device 5, the left support frame 22 includes three planting transmission cases 6, a center float 9 and two floats 10, and a seedling platform. It is good to be comprised so that the left part 11b of 6 articles|stripes of 11 may be supported.

(Second alternative embodiment of the invention)
In the configuration shown in FIGS. 1 to 10 and the above-described (first alternative embodiment of the invention), the first feed case 31 is supported by the left support frame 22, and the second feed case 32 is supported by the right support frame. 21 may be configured to be supported.

(Third alternative embodiment of the invention)
Instead of the configuration in which two planting arms 8 are supported on the rotating case 7, the rotating case 7 is eliminated and one planting arm 8 is supported on the right and left portions of the drive shaft 44. may be configured to

(Fourth alternative embodiment of the invention)
A leveling device (not shown) that levels the surface of a field by being rotationally driven around an axis extending in the left-right direction is supported on the front side of right and left support frames 21 and 22 . good too.

In this configuration, when the seedling planting device 5 is set to the non-working state A2, the ground leveling device is supported by the support frame 19, the right support frame 21, and the left support frame 22. Separated into supported parts, the parts supported on the right and left support frames 21, 22 of the soil grading device may be configured to move together with the right and left support frames 21, 22.

The present invention can be applied not only to the seedling planting device 5 of the 10-row planting type, but also to the seedling planting device 5 of the 8-row planting type and the 6-row planting type.

7 Rotating case (planting mechanism)
8 planting arm (planting mechanism)
11 Seedling platform 20 Support arm (switching mechanism)
27 Lateral feed shaft 31 First feed case 32 Second feed case 33 First input shaft 34 Second input shaft 35 First planting transmission shaft 36 Second planting transmission shaft 37 First longitudinal feed transmission shaft 38 Second longitudinal feed Transmission shaft 41 Lateral feed part 47 Transmission chain 48 Planted transmission connection part 51 Vertical feed part 57 Vertical feed transmission connection part A1 Working state A2 Non-working state

Claims (4)

a seedling tray, a planting mechanism capable of planting the seedlings on the seedling tray onto a field surface, a lateral feeding section capable of laterally feeding the seedling tray, and transferring the seedlings from the seedling tray to the planting mechanism. A seedling planting device provided with a vertical feeding unit that can be vertically fed toward
configured to be separable into a right planting portion and a left planting portion,
a working state in which the right planting portion and the left planting portion are connected and arranged along the left-right direction;
The right planting portion and the left planting portion are arranged such that the lateral width of the right planting portion and the left planting portion is narrower than the lateral width of the right planting portion and the left planting portion in the working state. a non-working state in which the left planting portion is separated from the left planting portion and the posture is changed;
a switching mechanism capable of switching the right planting portion and the left planting portion between the working state and the non-working state;
a first input shaft to which power is input; a lateral feed shaft capable of transmitting power of the first input shaft to the lateral feeding portion; and a first input shaft capable of transmitting power of the first input shaft to the planting mechanism. It has a planting transmission shaft and a first vertical feeding transmission shaft capable of transmitting the power of the first input shaft to the vertical feeding portion, and is provided in one of the right planting portion and the left planting portion. A first feed case is provided,
It has a second input shaft, a second planting transmission shaft capable of transmitting power of the second input shaft to the planting mechanism, and a second vertical feed transmission shaft capable of transmitting power to the vertical feed section. a second feed case provided in the other of the right planting portion and the left planting portion;
a planting transmission connecting portion that connects the first input shaft and the second input shaft in the working state and separates the first input shaft and the second input shaft in the non-working state;
In the working state, the first vertical feed transmission shaft and the second vertical feed transmission shaft are connected, and in the non-working state, the first vertical feed transmission shaft and the second vertical feed transmission shaft are separated. A seedling planting device provided with a longitudinal feed transmission connection. In the working state, the first input shaft extends from the first feed case toward the second feed case, and the second input shaft extends from the second feed case toward the first feed case. extended by
The seedling planting device according to claim 1, wherein the planting transmission connecting portion is provided over the extended end portion of the first input shaft and the extended end portion of the second input shaft. In the working state, the first longitudinal feed transmission shaft extends from the first feed case toward the second feed case, and the second longitudinal feed transmission shaft extends from the second feed case to the first feed case. extended towards the feed case,
The seedling planting according to claim 1 or 2, wherein the vertical transmission transmission connecting portion is provided across the extended end portion of the first vertical transmission transmission shaft and the extended end portion of the second vertical transmission transmission shaft. Device. A transmission chain attached across the second input shaft and the second planting transmission shaft and capable of transmitting power of the second input shaft to the second planting transmission shaft is provided in the second feed case. be
4. The seedling planting apparatus according to claim 3, wherein said second vertical feed transmission shaft passes through the inside of said transmission chain path and extends from said second feed case in one and the other direction.

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