JP2022030580A - Seedling planting apparatus - Google Patents

Abstract

To provide a seedling planting apparatus capable of being switchable between an operation state and a non-operation state in which transmission systems to a planting mechanism and a longitudinal feed unit are properly constituted.SOLUTION: A seedling planting apparatus comprises: a first feed case 31 which includes a first input shaft 33, a crossfeed shaft 27, a first planting transmission shaft 35, and a first longitudinal feed transmission shaft 37; a second feed case 32 which includes a second input shaft 34, a second planting transmission shaft 36, and a second longitudinal feed transmission shaft 38; a planting transmission connection part 48 which connects the first input shaft 33 with the second input shaft 34 at an operation state A1, and disconnects the first input shaft 33 with the second input shaft 34 at a non-operation state; and a longitudinal feed transmission connection part 57 which connects the first longitudinal feed transmission shaft 37 with the second longitudinal feed transmission shaft 38 at the operation state A1, and disconnects the first longitudinal feed transmission shaft 37 with the second longitudinal feed transmission shaft 38 at the non-operation state.SELECTED DRAWING: Figure 7

Description

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

In the seedling planting device, a seedling stand, a planting mechanism that can plant seedlings on the seedling stand, a horizontal feed section that can drive the seedling stand sideways, and seedlings on the seedling stand are planted. A vertical feed section is provided that allows vertical feed toward the mechanism.

Some of the relatively large seedling planting devices such as the 10-row planting type are configured as disclosed in Patent Document 1.
In Patent Document 1, the seedling planting device is configured to be separable into a right planting portion and a left planting portion, and in normal planting work, the right planting portion and the left planting portion are connected to the left and right. The working state arranged along the direction is set.

When a passenger-type rice transplanter equipped with a seedling planting device is mounted on a truck or the like and stored in a warehouse, the width of the seedling planting device extends to the right and left planting parts. However, in the non-working state where the right planting part and the left planting part are separated and the posture is changed so that the width is narrower than the left and right width over the right planting part and the left planting part in the working state. Set.

Japanese Unexamined Patent Publication No. 2014-198011 (see FIG. 10)

When the seedling planting device is configured to be switchable between a working state and a 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 the seedling planting. It is provided in the left planting part of the attachment device.

In Patent Document 1, the power transmitted to the right feed case is transmitted to the lateral feed portion, the planting mechanism, and the vertical feed portion of the right planting portion. The power of the vertical feed 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 feed part of the left planting part. Be 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 feeding unit in a seedling planting device that can be switched between a working state and a non-working state.

In the present invention, the seedling stand, the planting mechanism capable of planting the seedlings of the seedling stand on the field surface, the lateral feed unit capable of laterally feeding the seedling stand, and the seedlings of the seedling stand are described. It is a seedling planting device provided with a vertical feed section capable of vertical feed toward the planting mechanism, and is configured to be separable into a right planting portion and a left planting portion. The working state in which the left planting portion is connected and arranged along the left-right direction, and the left-right width extending over the right planting portion and the left planting portion are the right planting portion and the right planting portion in the working state. The right planting portion and the left planting portion are set to a non-working state in which the right planting portion and the left planting portion are separated and the posture is changed so as to be narrower than the left and right width extending over the left planting portion. A switching mechanism capable of switching the portion and the left planted portion between the working state and the non-working state is provided, and the power of the first input shaft to which power is input and the power of the first input shaft are transferred to the lateral feed portion. A lateral feed shaft that can be transmitted, a first planting transmission shaft that can transmit the power of the first input shaft to the planting mechanism, and a first that can transmit the power of the first input shaft to the vertical feed unit. It has a vertical feed transmission shaft, and is provided with a first feed case provided on one of the right planting portion and the left planting portion, and powers the second input shaft and the second input shaft. It has a second planting transmission shaft that can transmit power to the planting mechanism and a second vertical feed transmission shaft that can transmit power to the vertical feed section, and is the other of the right planting portion and the left planting portion. The first input shaft and the second input shaft are connected in the working state, and the first input shaft and the second input shaft are connected in the non-working state. In the working state, the first vertical feed transmission shaft and the second vertical feed transmission shaft are connected to each other, and in the non-working state, the first vertical feed transmission shaft and the planted transmission connecting portion are connected to the first vertical feed transmission shaft. A vertical feed transmission connecting portion that separates the second vertical feed transmission shaft is provided.

In the seedling planting device, the planting mechanism continuously plants the seedlings, so that the planting mechanism is constantly loaded.
On the other hand, the seedling stand is driven by the horizontal feed section so as to reciprocate in the left-right direction. Vertical feeding of seedlings on the platform is performed. As a result, the load is not applied to the vertical feed section during the horizontal feed of the seedling stand, and the load is applied to the vertical feed section when the seedling stand reaches the right end and the left end of the horizontal feed.

According to the present invention in the above-mentioned state, the power transmitted to the first input shaft of the first feed case is transmitted to the lateral feed portion in the first feed case and seedlings are planted via the first planting transmission shaft. It is transmitted to one of the planting mechanisms of the right planting part and the left planting part of the planting device, and is transmitted to one of the right planting part and the left planting part of the seedling planting device via the first vertical feed transmission axis. It is transmitted to the feeder.

The power of the first input shaft of the first feed case is transmitted to the second input shaft of the second feed case via the planting transmission connecting portion, and in the second feed case, the second input shaft of the second feed case. Power is transmitted to the other planting mechanism of the right planting portion and the left planting portion of the seedling planting apparatus via 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 via the vertical feed transmission connecting portion to the right planting portion and the left planting portion of the seedling planting device. It is transmitted to the other vertical feed portion of the portion.

As described above, according to the present invention, the power transmitted to the planting mechanism of the right planting portion and the planting mechanism of the left planting portion is transmitted from the first input shaft to the second input shaft and the first planting transmission. It passes through the shaft and the second planted transmission shaft, and does not pass through the first vertical feed transmission shaft and the second vertical feed transmission shaft.
Similarly, the power transmitted to the vertical feed portion of the right planted portion and the vertical feed portion of the left planted portion passes from the first input shaft to 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 planting mechanism is configured by independently configuring the transmission system to the planting mechanism and the transmission system to the vertical feed section for the planting mechanism and the vertical feed section in which the load is applied differently. The transmission system to the planting mechanism can be configured to adapt to the load applied to the planting mechanism, and the transmission system to the vertical feeding section can be configured to adapt to the load applied to the vertical feeding section.
As a result, the transmission system to the planting mechanism and the transmission system to the vertical feed section should be appropriately configured while suppressing the influence of the transmission system to the planting mechanism and the transmission system to the vertical feed section on each other. Will be able to.

The state described above is the working state of the seedling planting device. When the non-working state of the seedling planting device is set, the first input shaft and the second input shaft are separated in the planting transmission connection portion, and the first vertical feed transmission shaft is separated in the vertical feed transmission connection portion. And the second vertical feed transmission axis 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 is provided so as to extend toward the feed case and extend over the extending end portion of the first input shaft and the extending end portion of the second input shaft.

According to the present invention, in the working 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 becomes the first feed case. It is postponed toward.
As a result, when switching from the non-working state to the working state of the seedling planting device, the first input shaft of the first feed case and the second input shaft of the second feed case tend to face each other. , The planting transmission connection part (first input shaft and second input shaft) is in a connected state without difficulty.

In the present invention, in the working state, the first vertical feed transmission shaft is extended from the first feed case toward the second feed case, and the second vertical feed transmission shaft is the second feed case. The vertical feed transmission connecting portion extends from the first feed case toward the first feed case, and extends from the extension end portion of the first vertical feed transmission shaft to the extension end portion of the second vertical feed transmission shaft. It is preferable to be provided.

According to the present invention, in the working state of the seedling planting apparatus, the first vertical feed transmission shaft of the first feed case is extended toward the second feed case, and the second vertical feed transmission shaft of the second feed case is the second. It is extended toward one feed case.
As a result, when switching from the non-working state to the working state of the seedling planting device, 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. The vertical feed transmission connecting portion (first vertical feed transmission shaft and second vertical feed transmission shaft) is reasonably connected.

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

According to the present invention, in the second feed chain, the transmission chain is attached across the second input shaft and the second planted transmission shaft, and the power of the second input shaft is transmitted through the transmission chain to the second planted transmission shaft. It is configured to be transmitted to.

In the above-mentioned state, according to the present invention, the second longitudinal feed transmission shaft passes through the inside of the path of the transmission chain and penetrates the second feed case along the left-right direction. By effectively utilizing the space, the second vertical feed transmission shaft can be compactly supported by the second feed case.

It is a left side view of a passenger-type rice transplanter. It is a top view of a passenger-type rice transplanter. It is a left side view near the 1st feed case in a seedling planting apparatus. It is a right side view near the 2nd feed case in a seedling planting apparatus. It is a schematic plan view of the seedling planting apparatus in a working state. It is a schematic plan view of the seedling planting apparatus in a non-working state. It is a schematic cross-sectional plan view which shows the transmission system of a seedling planting apparatus. It is a cross-sectional plan view of the 1st feed case. It is a cross-sectional plan view of the 2nd feed case. It is a cross-sectional plan view near the vertical feed portion.

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

(Overall configuration of passenger rice transplanter)
As shown in FIGS. 1 and 2, the passenger-type rice transplanter raises and lowers the link mechanism 3 and the link mechanism 3 to the rear part of the machine body 30 provided with the right and left front wheels 1 and the right and left rear wheels 2. A hydraulic cylinder 4 is provided, and a 10-row planting type seedling planting device 5 is supported at the rear of the link mechanism 3. The aircraft 30 is provided with a driver's seat 18 on which the driver sits and a steering handle 24 for steering and operating the front wheel 1.

(Overall configuration of seedling planting equipment)
As shown in FIGS. 1 and 2, five planting transmission cases 6 arranged at predetermined intervals in the left-right direction on the seedling planting device 5 and rotating to the right and left parts of the planting transmission case 6. Possiblely supported rotating case 7 (corresponding to the planting mechanism), planting arms 8 supported at both ends of the rotating case 7 (corresponding to the planting mechanism), 1 center float 9, 4 floats 10, A seedling stand 11 and the like are provided.

In the seedling planting device 5, the rotary case 7 is rotationally driven while the seedling stand 11 is laterally fed, and the planting arm 8 takes out the seedlings from the lower part of the seedling stand 11 and plants them on the rice field surface. When the mounting table 11 reaches the right end portion and the left end portion of the horizontal feed, the seedlings of the seedling stand 11 are vertically fed toward the lower planting arm 8.

(Overall configuration of fertilizer application device and chemical spraying device)
As shown in FIGS. 1 and 2, the fertilizer application device 12 is supported over the rear part of the machine body 30 and the seedling planting device 5, and the fertilizer application device 12 includes a hopper 13, a feeding portion 14, a blower 15, and a groove. A vessel 16 and a hose 17 are provided.

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

In the fertilizer application device 12, the fertilizer of the hopper 13 is fed out by the feeding portion 14, and is supplied to the groove making device 16 through the hose 17 by the transport air of the blower 15, and a groove is formed on the field surface by the groove making device 16. While doing so, fertilizer is supplied from the groove making device 16 to the groove on the rice field.

A chemical spraying device 28 is supported by a support frame 29 connected to a central planting transmission case 6, and a herbicide or other chemical is sprayed from the chemical spraying device 28 onto the rice field surface behind the seedling planting device 5. To.

(Configuration for switching between working and non-working states in the 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 rolled around the axis P3 along the front-rear direction on the vertical link 3a at the rear of the link mechanism 3. It is supported as much as possible.

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

Three planting transmission cases 6 are connected to the right support frame 21 and extend rearward from the right support frame 21, and the center float 9 and the two floats 10 are connected to the right support frame 21. Is supported by. In the seedling stand 11, the right portion 11a of the 6 rows of the seedling stand 11 is supported by the right support frame 21 and the three planting transmission cases 6.

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 stand 11, the left portion 11b of the four rows of the seedling stand 11 is supported by the left support frame 22 and the two planting transmission cases 6.

The states shown in FIGS. 1 to 5 are the left end of the right support frame 21, the center side end of the left and right center side of the seedling planting device 5, and the right end of the left support frame 22. It is a working state A1 in which the right and left support frames 21 and 22 are arranged along the left and right directions by abutting the center side ends on the left and right center sides of 5 at intervals. In the working state A1 of the seedling planting device 5, the right portion 11a and the left portion 11b of the seedling stand 11 are connected to each other.

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

(Switching operation from working state to non-working state in seedling planting device)
The operation of switching 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 to 6, in the seedling stand 11, the right portion 11a and the left portion 11b of the seedling stand 11 are separated. Next, the right support frame 21 is swung around the axis P2 in the counterclockwise direction of FIG. 5, and the left support frame 22 is swung around the axis P2 in the clockwise direction of 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 planting portion and the left planting portion of the seedling planting device 5 are separated and the posture is 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 arranging them side by side in the left-right direction in a posture along the front-back direction.

In the non-working state A2 of the seedling planting device 5, the central end of the support frames 21 and 22 is arranged on the rear side with respect to the opposite end of the central end of the support frames 21 and 22. As described above, the support frames 21 and 22 are arranged in a posture along the front-rear direction.

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

(Structure of 1st feed case and horizontal feed of seedling stand)
As shown in FIGS. 3 and 5, the first feed case 31 is connected to the right support frame 21. The input shaft 25 is forwardly supported by the first feed case 31, and the power of the engine (not shown) mounted on the machine body 30 is transmitted to the input shaft 25 via the 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 left-right direction. The bevel gear 25a connected to the input shaft 25 and the bevel gear 33a connected to the first input shaft 33 are in mesh with each other, and the power of the input shaft 25 is transmitted to the first input shaft 33.

The lateral feed shaft 27 is supported by the first feed case 31 along the left-right direction, and a lateral feed transmission mechanism 39 capable of shifting in four steps is provided over the first input shaft 33 and the lateral feed shaft 27. There is. The power of the first input shaft 33 is transmitted to the lateral feed shaft 27 via the lateral feed transmission mechanism 39, and the lateral feed shaft 27 is rotationally driven.

The lateral feed shaft 27 extends to the right outside from the first feed case 31, and the end portion of the lateral feed shaft 27 is rotatably supported by the right connecting portion 23 via the support member 40 (FIG. 5). reference). A spiral groove is formed on the outer peripheral portion of the lateral feed shaft 27, a lateral feed portion 41 is attached to the spiral groove of the lateral feed shaft 27, and the lateral feed portion 41 is connected to the right portion 11a of the seedling stand 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 stand 11 are connected to each other. The power of the first input shaft 33 is transmitted to the lateral feed shaft 27 via the lateral feed transmission mechanism 39, and is transmitted to the lateral feed unit 41 by rotationally driving the lateral feed shaft 27. The lateral feed portion 41 is driven laterally to reciprocate along the spiral groove of the lateral feed shaft 27, and the lateral feed portion 41 drives the seedling rest 11 to reciprocate.

(Structure of the first feed case and the transmission system for planting)
As shown in FIGS. 3, 7 and 8, the first feed case 31 extends downward to the position of the planting transmission case 6. The first planting transmission shaft 35 is supported in the lower part of the first feed case 31 along the left-right direction, 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 to the sprocket 35a.

The 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 planting transmission case 6, the sprocket 35b is attached to the first planting transmission shaft 35 via the torque limiter 43.

The drive shaft 44 is supported at the rear portion of the planting transmission case 6, and the rotary case 7 is supported at the right portion and the left portion of the drive shaft 44. The sprocket 44a is attached to the drive shaft 44 via the minority clutch 45, and the transmission chain 46 is attached to the sprocket 35b of the first planting 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 via the transmission chain 42, and the torque limiter 43 and the transmission are transmitted from the first planting transmission shaft 35. It is transmitted to the rotary case 7 via the chain 46, the minority 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.

(Structure of the second feed case and the transmission system for planting)
As shown in FIGS. 4 and 5, the second feed case 32 is connected to the left support frame 22. The 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 position of the planting transmission case 6. The second planting transmission shaft 36 is supported in the lower part of the second feed case 32 along the left-right direction, and is connected to the sprocket 34a connected to the second input shaft 34 and the second planting transmission shaft 36. A transmission chain 47 is attached over the sprocket 36a.

The second planting transmission shaft 36 extends to the left from the second feed case 32 and is inserted into the front part of the two planting transmission cases 6 in a cylindrical shape covering the second planting transmission shaft 36. Cover 58 is provided. Inside the planting transmission case 6, the sprocket 36b is attached to the second planting transmission shaft 36 via the torque limiter 43.

The drive shaft 44 is supported at the rear portion of the planting transmission case 6, and the rotary case 7 is supported at the right portion and the left portion of the drive shaft 44. The sprocket 44a is attached to the drive shaft 44 via the minority clutch 45, and the transmission chain 46 is attached to 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.

At the extending end of the first input shaft 33, a spring 48c is provided in which the occlusal portion 48b is integrally rotatable and slidably supported with the first input shaft 33 by a spline structure, and the occlusal portion 48b is urged. The occlusal portion 48a is connected to the extending end portion of the second input shaft 34, and the planting transmission connecting portion 48 having the occlusal portions 48a, 48b and the spring 48c is connected to the extending end portion of the first input shaft 33. 2 It is provided over the extending 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 occlusal portions 48a and 48b of the planting transmission connecting portion 48 occlude with each other, and the first input is made by the planting transmission connecting portion 48. The shaft 33 and the second input shaft 34 are in a connected state.

In the connected state of the first input shaft 33 and the second input shaft 34 by the planting transmission connecting portion 48, as shown in FIGS. 7, 8 and 9, the power of the first input shaft 33 is the planting transmission connecting portion 48. Is transmitted to the second input shaft 34 via. The power of the second input shaft 34 is transmitted to the second planted transmission shaft 36 via the transmission chain 47, and the torque limiter 43, the transmission chain 46, the minority clutch 45 and the drive shaft are transmitted from the second planted transmission shaft 36. It is transmitted to the rotary case 7 via the 44, and the rotary case 7 and the planting arm 8 of the left planting portion of the seedling planting device 5 are rotationally driven.

As shown in FIG. 6, in the non-working state A2 of the seedling planting device 5, the occlusal portions 48a and 48b of the planting transmission connecting portion 48 are separated from each other, and the first input shaft 33 and the first input shaft 33 are separated by the planting transmission connecting portion 48. 2 The input shaft 34 is separated from the input shaft 34.

(Structure of 1st feed case and vertical feed transmission system)
As shown in FIGS. 3, 5, 7, and 8, the first vertical feed transmission shaft 37 is supported by the upper and lower intermediate portions of the first feed case 31 along the left-right direction, and is connected to the first input shaft 33. A transmission chain 49 is attached to the sprocket 33c and the sprocket 37a connected to the first vertical feed transmission shaft 37.

The first vertical feed transmission shaft 37 extends from the first feed case 31 to the right and left sides, 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. Is supported by. In the first vertical feed transmission shaft 37, the right and left vertical feed arms 55 are connected to the portions corresponding to the right end portion and the left end portion of the horizontal feed of the seedling stand 11.

As shown in FIGS. 7 and 8, inside the first feed case 31, the rotating body 50 is rotatably attached to the first vertical feed transmission shaft 37, and the transmission chain 42 (the above-mentioned (first feed)). (Construction of case and planting transmission system)) is hung on the rotating body 50. As a result, the first vertical 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, in the right portion 11a of the seedling stand 11, six belt-shaped vertical feed portions 51 are provided, and the six vertical feed portions 51 are the seedling planting device 5. It corresponds to 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, the vertical feed shaft 52 is attached over the lower part of the six vertical feed portions 51. The vertical feed drive unit 53 is attached to the vertical feed shaft 52 via a one-way clutch (not shown), and the input arm 53a of the vertical feed drive unit 53 is vertically left and right of the first vertical 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, and the first 1 The vertical feed transmission shaft 37 and the right and left vertical feed arms 55 are rotationally driven in the counterclockwise direction of FIG.

As described in the above (configuration of the first feed case and the horizontal feed of the seedling stand), the horizontal feed of the seedling stand 11 is performed, and the seedling stand 11 is between the right end portion and the left end portion of the horizontal feed. The input arm 53a of the vertical feed drive unit 53 is located between the right and left vertical feed arms 55, and the right and left vertical feed arms 55 slip and the vertical feed unit 51. And the vertical feed drive unit 53 is stopped.

When the seedling stand 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. It is driven to rotate by a predetermined angle by 55. Along with this, the vertical feed shaft 52 is rotationally driven by the vertical feed drive unit 53 by a predetermined angle, and the seedlings of the seedling stand 11 are vertically fed toward the lower planting arm 8 by the vertical feed unit 51. In this state, the power of the first input shaft 33 is transmitted to the vertical feed portion 51 of the right planting portion of the seedling planting device 5 via the first vertical feed transmission shaft 37.

(Structure of 2nd feed case and vertical feed transmission system)
As shown in FIGS. 4, 5, 7, and 9, the second vertical feed transmission shaft 38 is supported by the upper and lower intermediate portions of the second feed case 32 along the left-right direction. The second vertical feed transmission shaft 38 extends from the second feed case 32 to the right and left sides, and the left portion of the second vertical feed transmission shaft 38 rotates to the left support frame 22 via the support member 54. It is supported as much as possible. In the second vertical feed transmission shaft 38, the right and left vertical feed arms 55 are connected to the portions corresponding to the right end portion and the left end portion of the horizontal feed of the seedling stand 11.

As shown in FIGS. 4, 7 and 9, inside the second feed case 32, the rotating body 56 is rotatably attached to the second vertical feed transmission shaft 38, and the transmission chain 47 (the above-mentioned (second)). (Structure of feed case and transmission system for planting)) is hung on the rotating body 56. As a result, the second vertical 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, in the left portion 11b of the seedling stand 11, four belt-shaped vertical feed portions 51 are provided, and the four vertical feed portions 51 are the seedling planting device 5. It corresponds to four 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, the vertical feed shaft 52 is attached over the lower part of the four vertical feed portions 51. The vertical feed drive unit 53 is attached to the vertical feed shaft 52 via a one-way clutch (not shown), and the input arm 53a of the vertical feed drive unit 53 is vertically left and right of the second vertical 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. Has been done. 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.

A spring 57c is provided at the extending end of the first vertical feed transmission shaft 37 so that the occlusal portion 57b is integrally rotatable and slidably supported with the first vertical feed transmission shaft 37 by a spline structure, and the occlusal portion 57b is urged. Has been done. The occlusal portion 57a is connected to the extension end of the second vertical feed transmission shaft 38, and the vertical feed transmission connecting portion 57 having the occlusal portions 57a, 57b and the spring 57c extends the first vertical feed transmission shaft 37. It is provided over the end portion and the extending end portion of the second vertical feed transmission shaft 38.

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

In the connected state of the first vertical feed transmission shaft 37 and the second vertical feed transmission shaft 38 by the vertical feed transmission connecting portion 57, as shown in FIGS. 7, 8 and 9, the power of the first input shaft 33 is the transmission chain. It is transmitted to the first vertical feed transmission shaft 37 via 49, and is transmitted to the second vertical feed transmission shaft 38 via the vertical feed transmission connecting portion 57, and is transmitted to the second vertical feed transmission shaft 38, right and left. The vertical feed arm 55 is rotationally driven in the clockwise direction of FIG.

As described in the above (configuration of the first feed case and the horizontal feed of the seedling stand), the horizontal feed of the seedling stand 11 is performed, and the seedling stand 11 is between the right end portion and the left end portion of the horizontal feed. The input arm 53a of the vertical feed drive unit 53 is located between the right and left vertical feed arms 55, and the right and left vertical feed arms 55 slip and the vertical feed unit 51. And the vertical feed drive unit 53 is stopped.

When the seedling stand 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. It is driven to rotate by a predetermined angle by 55. Along with this, the vertical feed shaft 52 is rotationally driven by the vertical feed drive unit 53 by a predetermined angle, and the seedlings of the seedling stand 11 are vertically fed toward the lower planting arm 8 by the vertical feed unit 51. In this state, the power of the first input shaft 33 was 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. It is a state.

As shown in FIG. 6, in the non-working state A2 of the seedling planting device 5, the occlusal portions 57a and 57b of the vertical feed transmission connecting portion 57 are separated from each other, and the first vertical feed transmission shaft 37 is provided by the vertical feed transmission connecting portion 57. And the second vertical feed transmission shaft 38 are separated from each other.

(First Different Form of Implementation 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 right portion 11a of the four rows of the seedling stand 11. It may be configured in.

In the case of the above-mentioned configuration, in the left planting portion of the seedling planting device 5, three planting transmission cases 6, a center float 9, two floats 10, and a seedling stand are placed on the left support frame 22. It is preferable that the left portion 11b of Article 6 of 11 is supported so as to be supported.

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

(Third alternative form of carrying out the invention)
Instead of a configuration in which two planting arms 8 are supported by the rotating case 7, the rotating case 7 is abolished so that one planting arm 8 is supported by the right and left parts of the drive shaft 44. It may be configured in.

(Fourth Different Embodiment of the Invention)
A ground leveling device (not shown) that leveles the field surface by being rotationally driven around the axis along the left-right direction is configured to be supported on the front side with respect to the right and left support frames 21 and 22. May be good.

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

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

7 Rotating case (planting mechanism)
8 Planting arm (planting mechanism)
11 Seedling stand 20 Support arm (switching mechanism)
27 Horizontal feed shaft 31 1st feed case 32 2nd feed case 33 1st input shaft 34 2nd input shaft 35 1st planting transmission shaft 36 2nd planting transmission shaft 37 1st vertical feed transmission shaft 38 2nd vertical feed Transmission shaft 41 Horizontal feed part 47 Transmission chain 48 Planting transmission connection part 51 Vertical feed part 57 Vertical feed transmission connection part A1 Working state A2 Non-working state

Claims (4)

A seedling stand, a planting mechanism capable of planting the seedlings of the seedling stand on the field surface, a lateral feed unit capable of laterally feeding the seedling stand, and a seedling of the seedling stand to the planting mechanism. It is a seedling planting device equipped with a vertical feed section that can be fed vertically.
It is configured so that it can be separated into a right planting part and a left planting part.
The working state in which the right planting portion and the left planting portion are connected and arranged along the left-right direction, and
The right planting so that the left and right width over the right planting portion and the left planting portion is narrower than the left and right width over the right planting portion and the left planting portion in the working state. A non-working state is set in which the part and the left planting part are separated and the posture is changed.
A switching mechanism capable of switching between the right planted portion and the left planted portion between the working state and the non-working state is provided.
A first input shaft to which power is input, a lateral feed shaft capable of transmitting the power of the first input shaft to the lateral feed unit, and a first capable of transmitting the power of the first input shaft to the planting mechanism. It has a planting transmission shaft and a first vertical feed transmission shaft capable of transmitting the power of the first input shaft to the vertical feed portion, and is provided on one of the right planting portion and the left planting portion. Equipped with a first feed case
It has a second input shaft, a second planting transmission shaft capable of transmitting the 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 portion. A second feed case provided on the other side of the right planting portion and the left planting portion is provided.
In the working state, the planting transmission connecting portion that connects the first input shaft and the second input shaft 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 equipped with a vertical 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 is directed from the second feed case toward the first feed case. Is postponed,
The seedling planting apparatus according to claim 1, wherein the planting transmission connecting portion is provided over the extending end portion of the first input shaft and the extending end portion of the second input shaft. In the working state, the first vertical feed transmission shaft extends from the first feed case toward the second feed case, and the second vertical feed transmission shaft extends from the second feed case to the first feed case. Deferred towards the feed case,
The seedling planting according to claim 1 or 2, wherein the vertical feed transmission connecting portion is provided over the extended end portion of the first vertical feed transmission shaft and the extended end portion of the second vertical feed transmission shaft. Device. The second feed case is provided with a transmission chain that is attached over the second input shaft and the second planted transmission shaft and is capable of transmitting the power of the second input shaft to the second planted transmission shaft. Be,
The seedling planting apparatus according to claim 3, wherein the second longitudinal feed transmission shaft extends from the second feed case to one side and the other side through the inside of the path of the transmission chain.

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