JPH0746932B2 - Seedling stop device in rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rice transplanter, particularly a riding rice transplanter equipped with a long seedling stand, for a seedling feeding device for vertically feeding seedlings on the seedling stand. In particular, the present invention relates to a seedling feeding stop device of a seedling feeding device.

(B) Conventional Technology Generally, a seedling feeding device uses a roller having a large number of protrusions, and the roller is rotated at the left and right moving ends of a seedling stand to vertically feed the seedling. With the roller with protrusions, the part that bites into the seedlings is small, and the seedlings may drop or the seedlings may not feed vertically.

Therefore, conventionally, for example, as shown in JP-A-59-71613, there is a seedling feeding device that winds a belt with protrusions between a driving roller and a driven roller and vertically feeds seedlings in a wide area by the belt. It has been devised.

The seedling feeding device disengages the clutch of the predetermined planter based on the operation of the ridge-planting operation lever when stopping the planting of the predetermined ordinance at the ridgeline and the non-feeding action of the driven roller against the spring. It is configured to move to the position and approach the drive roller to loosen the belt to stop the vertical feeding of seedlings by the belt.

(C) Problems to be Solved by the Invention However, since the above-mentioned conventional seedling feeding stopping device loosens the belt and causes a slip between the belt and the driving roller, the feeding of the belt is stopped. In the above-mentioned seedling feeding device, in which the belt is apt to rotate together, and the drive roller portion is located at the seedling feeding position so that the seedling weight acts on the belt, the seedling weight is increased between the belt and the drive roller. A friction force is applied to the belt, and the belt does not stop with certainty, and the seedling may be vertically fed to cause seedling crushing and buckling despite the seedling feeding stop operation.

Therefore, an object of the present invention is to provide a seedling feeding stop device that solves the above problems by reliably stopping the vertical feeding of seedlings.

(D) Means for Solving the Problem The present invention has been made in view of the above circumstances, and as shown in, for example, FIG. 1 and FIG. 3 to FIG. A seedling feeding rotator 65 rotatably supported on the seedling placing table, and a drive means 72 for rotating the seedling feeding rotating body 65 in one direction at a left and right moving end of the seedling placing table 12 by a predetermined amount. In the rice transplanter 1 which is provided with and the seedlings are fed by driving the rotating body 65,
A connecting member 80 connected to the driving means 72 to reciprocate.
One-way rotating means 56, 75 interposed between the connecting member and the seedling feeding rotary body 65 to convert the reciprocating motion of the connecting member 80 into a one-way rotary motion and transmit the rotary motion to the rotary body 65. , 76,7
9, a switchable manual operating means 85, and a drive transmission member 7 constituting the manual operating means and the one-way rotating means 56 ,.
And a stop rod 92 for cutting off the driving force transmission between the one-way rotating means 56, ... And the driving means 72 based on being manually driven by being interposed between Operation means
On the basis of moving the drive transmission member 79 by a predetermined amount by the 85 through the stop rod 92, the one-way rotation means 5
.. and the driving means 72 are cut off to stop the driving of the seedling feeding rotary body 65.

(E) Action Based on the above configuration, when the seedling placing table 12 reaches the left and right moving ends in the planting work in which the manual operation means 85 is held at a predetermined position, the driving force from the driving means 72 causes the connecting member 80 and the one-way rotation. It is transmitted to the seedling feeding rotary body 65 via the means 56, 75, 76, 79. At this time, the connecting member 80 connected to the driving means 72 reciprocates, and the reciprocating motion is converted into a unidirectional rotating motion by the unidirectional rotating means 56 ,. It is rotationally driven by a predetermined amount in one direction. Thereby, the seedlings are fed.

On the other hand, when the manual operation means 85 is switched in this planting work, the drive transmission member 79 is moved by a predetermined amount via the stop rod 92, and the drive force is transmitted between the one-way rotation means 56, ... And the drive means 72. Is cut. Therefore, the drive means
The drive of the seedling feeding rotary body 65 by 72 is stopped.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIG. 6, the riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3. The traveling machine body 5 has an engine 6 mounted in front of its front wheels. At the same time, the driver's seat 9 is arranged so that the seat 7 is positioned in the middle portion between the front and rear wheels, that is, the center of gravity of the machine. Further, a planting part 10 is supported at the rear of the traveling machine body 5 via a link 8 so as to be vertically movable, and a large number of planters 11, ..., Floats 14 and mat seedlings are vertically arranged in the planting part 10. A long seedling stand 12 that can be placed half and a half is provided. In addition, on the left and right in front of the machine, a fertilizer tank for paste or liquid fertilizer.
13, 13 are installed, and a hose 16 is communicated through the body frame 15 so as to connect the left and right tanks 13. Further, from the hose 16, a hose 16 is suctioned below the step surface 17 of the driver's seat 9. A hose 19 extends rearward and communicates with a pump device 20 arranged below the operating seat 7. Further, the pump device 20 is guided to each fertilizer flow sensor 22 and the switching valve 23 which are installed side by side in the machine lateral direction through the hoses 21 depending on the number of planting lines, and each hose 25 and the runoff prevention. It is guided to a nozzle 27 near the planter 11 via a valve 26.

On the other hand, as shown in FIGS. 1 and 2, a drive case 30 is provided on the back surface of the seedling stand 12, and a shaft case extending left and right from the lower portion of the drive case 30. A large number of planter cases 35 are arranged via 32. A stay 36 extends in the left-right direction from the drive case 30, and posts 39 are erected on the left and right portions of the stay 36, and a slide piece 40 and a planter case 35 provided at the upper end of the post 39. The seedling stand 12 is slidably supported in the left-right direction by a slide piece 42 provided in the portion. Also drive case
A propeller shaft 42 extends from the traveling machine body 5 at 30, and a slide bar 43 projects from the drive case 30 so as to be slidable in the left-right direction and a seedling feeding shaft 45 projects. The slide bar 43 is a bracket. It is connected to the seedling stand 12 via 46. A rotating body 49 is fixed to the tip of the seedling feeding shaft 45, and a pin 50 is planted at the tip of the rotating body 49.

On the other hand, a seedling feeding device 51 is arranged below the rear surface of the seedling placing table 12, and the feeding device 51 is fixed to the seedling placing table 12 as shown in detail in FIGS. 3 and 4. Brackett 12b
It is rotatably supported by a drive shaft 52 and a driven shaft 55, and the drive shaft 52 further includes a ratchet 56 and a drive roller 60.
Is fixed, and a driven roller 62 is rotatably supported on the driven shaft 55. Then, the driving roller 60 and the driven roller
A belt 65 having a large number of protrusions 65a ...
, And the belt 65 is exposed to the seedling placing table mounting surface through the hole 12c formed in the seedling placing table 12, and is fixed to the driven shaft 55 and the seedling placing table 12. Horizontal rib 12a
A spring 66 is stretched between and to constantly apply tension. Further, a cam shaft 69 is provided between the drive shaft 52 and the driven shaft 55 on the rear surface of the seedling stand 12, and the cam shaft 69 is provided.
An oscillating cam 70 is fixed to 69, and the tip end of the cam 70 abuts the pin 50 of the rotating body 49 to oscillate, and a pin 72 is planted in the intermediate part. Also, the drive shaft 52
An arm 75 is rotatably supported on the arm 75.
A claw 76 that engages with the ratchet 56 is installed on one side thereof, and a pin (drive transmission member) 79 is planted on the other side thereof. And these arms 75, pins 79, claws
The one-way rotating means is constituted by the 76, the ratchet 56, etc., and is configured to convert the reciprocating movement of the plate 80 (described below) into the one-way rotating movement. As shown in detail in FIG. 5, a plate (connecting member) 80 having a long hole 80a is provided with pins 72 and 7 at both ends of the long hole 80a.
9 are fitted and arranged, usually this plate 80
Convert the swing of the swing cam 70 into a reciprocating motion, and then
To 75. And the reciprocating motion of the plate 80 is
The arm 75, the claw 76, the ratchet 56, and the like convert the rotational motion into one direction. In addition, arm 75 and fixed bracket
A spiral spring 82 is arranged between the spiral spring 12b and 12b to urge the arm 75 to the position shown by the solid line in FIG. 3, and to engage with the ratchet 56 by the spiral spring having the pawl 76. Is urged by.

On the other hand, the upper end portion of the seedling platform 12 back side, are respectively mat seedlings guiding surfaces (ridges) 12 ₁ to 12 ₅ to corresponding furrow planting operation lever (manual operating unit) 85 ... are installed, the The lever 85 can rotate around the pin 85a along the guide 86 in a plane parallel to the seedling table plane. For details, as shown in FIG.
Left ridge planting lever corresponding to the left two guide surfaces 12 ₁ and 12 ₂
85 ₁ is installed, right ridge planting operation lever 85 ₃ is installed in correspondence with the two guide lines 12 ₄ and 12 ₅ on the right side, and further central ridge planting lever is installed in correspondence with the guide line 12 ₃ in the center 1 line. 85 ₂ is installed. Further, a wire 89 is directly connected to a proximal end portion of the lever 85 via a spring 87, and one wire 89 is directly connected to the planter clutch of the planter case 30. The wire 90 has a long hole 92
It is connected to a plate (stop rod) 92 having a. For details, each with projections belts 65 are arranged corresponding to the respective guide surface 12 ₁ to 12 _5, the guide surfaces of the right and left two rows
12 _1, 12 ₂ and 12 _4, 12 seedlings feeding device 51 ₁ corresponding to the _5, 5
1 ₃ and the seedling feeding device 51 _{2 in} the central one row are in one set, so that the rocking cam 70, the arm 56 and the tachet 56 are also provided for each set, and the plate 92 and each ridge planting lever are also provided. 85 ₁ , 85 ₂ , 85 ₃ corresponding to each seedling feeding device 5
It is installed every 1 ₁ , 51 ₂ , 51 ₃ sets. The plate 92 is arranged side by side with the plate 80, and its long hole 92
The pins 72 and 79 are fitted in a. In this way, the plate 92 interposed between the pins (drive transmission members) 79, ... And the ridge planting operation lever 85 moves the pins 79 and the like based on the manual operation of the ridge planting operation lever 85, whereby plate
It is configured to disconnect the drive force transmission between 80 and pin 79. In the figure, 89a and 90a are outer wires of the wires 89 and 90, respectively, and the drive shaft 52 is the seedling feeding device 51.
_Although provided for each of ₁ , 51 ₂ , 51 ₃ , one cam shaft 69 is provided so as to penetrate therethrough, and the swing cam 70 is provided on each of the shafts 69.
... is fixed. A connecting arm 95 fixed to the cam shaft 69 is also installed between the right seedling feeding device 51 ₃ and the central seedling feeding device 51 ₂ , and the arm 95 is a connecting plate.
It is linked to 96. On the other hand, an apron 97 which supports the lower end of the seedling and has a scraping opening by the planter 11 is arranged at the lower end portion of the seedling stand 12, and the apron 97 is a planter.
It is adjusted to the lower end of the seedling stand 12 to adjust the amount of scraping by 11 at one time. Then, a scraping amount adjusting lever 99 for adjusting the apron 97 is rotatably installed on a fixed member such as a predetermined planter case 35, and the lever 99 is further connected to a bell crank 101 via a Bowden wire 100. ,
Further, the other end of the bell crank 101 is engaged with the long hole 96a of the connecting plate 96.

Since this embodiment has the above-mentioned configuration, the Honda transplanter 1
In order to carry out the planting work, the traveling machine body 5 is driven, the planting section 10 is driven, and further the pump device 20 is driven to drive the nozzles.
Apply paste or liquid fertilizer from 27 along the planting row. That is, the power transmitted from the propeller shaft 42 to the transmission device in the drive case 30 slides the slide bar 43 left and right to reciprocate the seedling stand 12, and also through the shafts in the shaft case 32. Power is transmitted to the transmission device in the planter case 35 to drive each planter 11. As a result, the planter 11 puts the seedlings placed on the seedling stand 12 into
The plants are scraped off and planted in the field. Then, when the seedling placing table 12 reaches the left and right moving end, the swing cam 70 contacts the pin 50 of the rotating body 49 which is constantly rotating, and the cam 70 moves from the solid line position in FIG. 3 and FIG. Moved to a position. Then pin 72
The plate 80 is moved via the pin, the arm 75 is moved to the chain line position via the pin 79, and the pawl 76 is rotated to move the pawl 76.
Rotate ratchet 56 together with 76. Further, the drive roller 60 is rotated integrally with the ratchet 56 to move the belt with protrusions.
A predetermined amount of 65 is fed in the direction of arrow B, whereby the mat seedlings on the seedling stand 12 are fed vertically by one pitch. And seedling stand 12
When is returned from the left / right moving end, the swing cam 70 is disengaged from the rotating body 49, and the arm 75, the plate 80, and the swing cam 70 are returned to their original positions indicated by the solid line based on the restoring force of the spring 82. At this time, the pawl 76 is returned together with the arm 75.
Is disengaged from the ratchet 56, and the ratchet 56, and therefore the drive roller 60 and the belt 65, are not returned and are held at the feed position.

Further, when the scraping amount adjusting lever 99 is operated, for example, in the scraping amount decreasing direction, the apron 97 is adjusted so as to approach the seedling stand 12, and at the same time, the bell crank 101 is reversed via the Bowden wire 100 in FIG. Rotate clockwise. Then,
Along with the swing of the swing cam 70, the amount of movement of the connecting plate 96 that reciprocates through the connecting arm 95 is restricted by the pin of the bell crank 101 coming into contact with the end of the long hole 96a. The return position of each swing cam 70 is regulated via 95, the swing amount of the swing cam 70 by the rotating body 49 is reduced, and the vertical seedling feed amount by the belt 65 is reduced.

Then, when the planting work comes close to the ridge, it is necessary to stop the planting of the predetermined row in order to adjust the number of the planting rows. Therefore, the ridge planting lever 85 ₁ corresponding to the predetermined row, for example, 12 ₁ , 12 _2.
Rotate to the off position. Then, the planter clutch is disengaged via the spring 87 and the wire 89 to stop the corresponding planter 11, and the plate 92 is moved in the direction of arrow C in FIG. 3 via the wire 90. Then, with the movement of the plate 92, the pin 79 fitted in the long hole 92a of the plate 92 is also integrally moved to rotate the arm 75,
Similarly to the above, the ratchet 56 is rotated to feed the belt 65 by a predetermined amount in the direction of the arrow B, and the belt 65 is held at the feeding position. As a result, even if the seedling placing table 12 reaches the left and right movement ends and the swing cam 70 swings to the chain line position by the rotating body 49 to move the plate 80, as shown in FIG. Since there is a predetermined distance 1 between the end of the hole 80a and the pin 79 of the lever 75, the plate 80 does not move the arm 75 merely by idling, so that the ratchet 56, the drive roller 60 and the belt 65 are not moved. The mat seedlings on the rows 12 ₁ and 12 ₂ are not moved, and the vertical feeding is stopped and held. At this time, since the plate 92 forming the exclusive stop rod moves in conjunction with the ridge planting operation lever 85 ₁ to rotate the corresponding arm 75, the feeding operation of the predetermined seedling feeding device 51 ₁ can be reliably stopped. At the same time, the long hole (play mechanism) 80a of the plate 80 forming the exclusive connecting member allows the swing cam 70 to move without being interfered with, and the other seedling feeding devices 51 ₂ and 51 ₃ are scraped amount adjusting levers.
The seedlings can be reliably fed vertically with the seedling feeding amount set at 99, and in the other seedling feeding devices 51 ₂ and 51 ₃ , the plate (stop rod) 92 does not move at all and the plate is not moved. The seedling feeding operation is performed by the (connecting member) 80, and problems such as catching due to useless movement do not occur.

(G) Effect of the Invention As described above, according to the present invention, the manual operation means 85
Since the drive transmission member 79 is moved by a predetermined amount via the stop rod 92 to manually cut the transmission of the drive force between the one-way rotation means 56, ... And the drive means 72, Despite its simple structure, the seedling feeding rotary body 65
The rotation of the seedlings can be prevented, and the feeding of the seedlings can be surely stopped to prevent the seedlings from being crushed and buckled. Further, if the belt 65 with protrusions is used as the seedling feeding rotary member, the belt 65 with protrusions is held at a predetermined position without retracting to the non-feeding action position on the back surface of the seedling stand 12 even at the seedling feeding stop position. Therefore, the seedling belt 65 is held in a wide area, and the seedling at the feeding stop position does not fall off due to vibration or the like and can be reliably stopped and held at a predetermined position. Furthermore, since a connecting member 80 for connecting the driving means 70 and the arm 75 is provided outside the stop rod 92 connected to the ridge planting operation lever 85, a dedicated connecting member 80 is used during normal seedling feeding operation. The seedlings are vertically fed, the stop rod 92 does not operate at all, does not transmit useless movement to the ridge planting operation lever 85, prevents locking due to catching, etc., and ensures reliable operation. When the seedling feeding operation is stopped, the arm 75 can be reliably held at the feed stop position by the dedicated stop rod 92, and the connecting member is also provided.
The play mechanism 80a of 80 ensures the movement of the drive means 70, and the movements of the other seedling feeding devices 51 ... Can be reliably maintained.

[Brief description of drawings]

FIG. 1 is a side view showing a planting section equipped with a seedling feeding stop device according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view showing a seedling feeding device, and FIG. 4 is a plan view thereof. FIG. 5 is a side view showing the main part thereof. FIG. 6 is a side view showing a riding rice transplanter to which the present invention can be applied. 1 ... (passenger) rice transplanter, 10 ... planting section, 12 ... seedling stand, 51 ...
Seedling feeding device, 52 ... Drive shaft, 55 ... Followed shaft, 56 ... Ratchet, 60 ... Drive roller, 62 ... Followed roller, 65 ... Seedling feeding rotating body (belt with protrusion), 70 ... Oscillating cam, 72 ... Driving means (Pin), 75 ... One-way rotating means (arm) 76 ... One-way rotating means (claw), 79 ... One-way rotating means, drive transmission member (pin), 80 ... Connecting member (plate), 80a ... Play mechanism ( (Elongated hole), 85 ... Manual operating means (ridge operation lever), 90 ... Wire, 92 ... Stop rod (plate), 92a ... Oblong hole.

Claims (1)

[Claims] 1. A seedling stand that moves left and right, a seedling feeding rotator rotatably supported on the seedling placing table, and the seedling feeding rotator in one direction at the left and right moving ends of the seedling placing table. A rice transplanter comprising: a driving unit that rotates a predetermined amount and feeding seedlings by driving the rotating body; a connecting member that reciprocates by being connected to the driving unit; One-way rotating means interposed between the seedling feeding rotary member and converting the reciprocating motion of the connecting member into a one-directional rotary motion and transmitting the rotary motion to the rotary member, a switchable manual operating unit, and the manual operating Means and a drive transmission member that constitutes the one-way rotation means, and a stop rod that cuts drive force transmission between the one-way rotation means and the drive means based on being manually driven. And in the manual operation means Based on moving the drive transmission member through the stop rod by a predetermined amount, the drive force transmission between the one-way rotation means and the drive means is cut off to stop the drive of the seedling feeding rotary body. A seedling feeding stop device in a rice transplanter, which is characterized in that