JPH072048B2 - Structure of planting part 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 having a long seedling stand, which is provided with a seedling feeding device for vertically feeding seedlings on the seedling stand. The present invention relates to a planting section, and more specifically, to a layout structure of each device in the planting section.

(B) Conventional technology Generally, in a planting section of a rice transplanter, a seedling stand is supported by a main body of the planting section such as a drive case so that the seedling stand can be moved in the left-right direction. A seedling feeding device is installed to vertically feed one pitch at the left and right moving ends of the placing table. Further, the seedling feeding device is, for example, Jitsuko Sho 58-11.
As shown in Japanese Laid-Open Patent Publication No. 134, it is provided with two swing cams that drive the feeding roller in one direction via a ratchet,
The rotating body projecting from the drive case abuts against one of the swing cams at the left and right moving ends of the seedling stand and swings the cam to drive the seedling feeding device. Conventionally, the rotating body is installed so as to project from the left and right sides of the drive case, and therefore, the two swing cams are also disposed at the left and right side positions of the seedling stand that sandwiches the drive case.

(C) Problems to be Solved by the Invention For this reason, the structure becomes complicated, and it is extremely difficult to adjust the contact timing between the rotating body and the swing cam at positions greatly separated from each other to the left and right. This is one of the causes of problems such as a difference in the vertical feed amount at the left and right moving ends of the seedling stand and a shift in the feed timing.

Further, a device has been devised in which a rotating body is projected from only one of the left and right sides of the drive case, and two rotating cams located relatively close to each other are swung by the rotating body to drive the seedling feeding device. However, in the device, the swing cam and the drive case are arranged so as to overlap each other in a plan view due to the seedling stand moving laterally. Therefore, in order to avoid the interference between the rocking cam and the drive case, the seedling stand is arranged to escape to the rear, which causes the center of gravity of the planting part to be closer to the rear, and the front-rear balance of the rice transplanter is poor. is doing. In particular, this tendency is remarkable in a long seedling stand in which two and a half mat seedlings can be vertically mounted on the seedling stand.

(D) Means for Solving the Problems The present invention is intended to solve the above problems, and for example, as shown in FIGS. 1 to 3, a drive case 30 and a drive case 30. A seedling stand 12 that moves left and right with respect to the case, and a seedling feeding device 51 that is rotatably supported by the seedling stand, and from the drive case 30 at the left and right moving ends of the seedling stand 12 In the rice transplanter 1, which transmits the driving force of the above to the seedling feeding device 51 to rotate the seedling feeding device by a predetermined amount in one direction to feed the seedlings,
A drive transmission member 49, which is arranged at a predetermined distance from the drive case 30 on one of the left and right sides of the drive case 30, and is driven to rotate so as to project from the drive case, and is connected to the seedling feeding device 51. In addition, it is arranged on the side where the drive transmission member 49 is arranged with respect to the drive case 30 so as to alternatively contact the drive transmission member 49 at the left and right moving ends of the seedling stand 12. A pair of rocking members 70, 70, and, even at the lateral movement position of the seedling stand 12, the rocking members 70, 70 and the drive case 30 are prevented from interfering with each other. Characterize.

(E) Action Based on the above configuration, when the seedling placing table 12 moves to the left or right in the planting work, one of the swing members 70, 70 alternatively contacts the drive transmission member 49 at the left and right moving ends. . The swinging member 70 receives the driving force from the drive transmitting member 49 and is swung to drive the seedling feeding device 51. As a result, the device is rotated in one direction by a predetermined amount, and seedlings are fed.

At this time, the right rocking member 70 does not interfere with the drive case 30 even if the seedling stand 12 moves to either the left or right direction, for example, to the right movement end as shown in FIG. The seedling stand 12 is located in the vicinity of the drive case 30. Here, in FIG. 2, the swing member on the right side
Although the 70 is shown as being superimposed on the drive case 30, this only appears to interfere in the drawing, and the portion overlapping with the drive case 30 (a part of the swinging member 70) is shown in the figure. As is apparent from FIG. 3, the drive case 30 is arranged so as to be pulled into the seedling stand 12 side.
And the rocking member 70 do not actually interfere with each other.

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

As shown in FIG. 9, the riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3, and an engine 6 is mounted on the traveling machine body 5 in front of the 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 able to move up and down, 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 to 3, a drive case 30 is arranged 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. Further, a propeller shaft 42 extends from the traveling machine body 5 in the drive case 30, a slide bar 43 projects from the drive case 30 slidably in the left-right direction, and a seedling feeding shaft 45 projects. The bar 43 is connected to the seedling stand 12 via a connecting member 46. As shown in FIG. 5, the gap between the fitting boss 46a fixed to the tip of the connecting member 46 and the slide bar 43 is formed large, that is, in a loose relationship, and the slide bar 43 is formed. Collars 44 are fixed to both ends by bolts 45. Therefore, the slide bar 43
The lateral movement of is transmitted to the connection member 46 and further to the seedling stand 12 by the contact between the collar 44 and the side surface of the fitting boss portion 46a. Further, a rotating body (drive transmission member) 49 is fixed to the tip of the seedling feeding shaft 45 so as to project from the drive case 30, and a pin 50 is planted at the tip of the rotating body 49. There is. Further, as shown in detail in FIG. 4, both ends of the shaft case 32 and the stay 36 are reinforced by connecting and fixing plates 37, and the shaft case 32,
Space E surrounded by stay 36, plate 37 and seedling stand 12
The rotating body 49 that is constantly rotating is disposed in the.

On the other hand, a seedling feeding device 51 is disposed below the back 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. 6 and 7. Bracket 12b
A drive shaft 52 and a driven shaft 55 which are rotatably supported on the drive shaft 52, a ratchet 56 and a drive roller 60 are fixed to the drive shaft 52, and a driven roller 62 is rotatably supported on the driven shaft 55. Has been done. A belt 65 having a large number of protrusions 65a is wound between the driving roller 60 and the driven roller 62, and the belt 65 passes through a hole 12c formed in the seedling placing table 12 and the seedlings are formed. A spring 66 is stretched between the driven shaft 55 and the lateral rib 12a fixed to the seedling placing stand 12 while being exposed on the placing stand placing surface, and is constantly applied with 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.
Two rocking cams (rocking members) 70 are fixed to each other at a predetermined distance, and these cams 70, 70 have the tip portions thereof selectively at the left and right moving ends of the seedling placing table 12. Rotator 49 pin 50
A pin 72 is planted in the middle portion of the pin 72 so that the pin 72 abuts on the pin and swings. An arm 75 is rotatably supported on the drive shaft 52. A claw 76 that engages with the ratchet 56 is provided on one side of the arm 75, and a pin 79 is planted on the other side. Has been done. Further, as shown in detail in FIG. 8, a plate 80 having an elongated hole 80a is provided with the pins 72 and 79 fitted to both ends of the elongated hole 80a. Is transmitted to the arm 75. Further, a spiral spring 82 is arranged between the arm 75 and the fixed bracket 12b to urge the arm 75 to the position shown by the solid line in FIG. It is biased to engage the ratchet 56.

As shown in FIG. 1, the seedling feeding shaft 45 projects from the right side of the drive case 30, and its length is approximately the lateral movement distance of the seedling stand 12, that is, one mat seedling guiding surface. has become a length corresponding to (ridges) 12 to 12 ₅ of the width,
Further, the drive case 30 has a seedling feeding shaft 45 when seen in a plan view.
The portion is cut out to have a substantially L-shape. And, two rocking cams 70, 70 are arranged only on the right side of the drive case 30 so as to correspond to the rotating body 49 fixedly mounted on the seedling feeding shaft 45, and further detailed in FIG. , The seedling stand 12 moves to the right end and the left swing cam 70 rotates the rotating body 49.
The right swing cam 70 is configured so as not to interfere with the notch D of the drive case 30 even when it comes into contact with the drive case 30, and the seedling stand 12 is arranged close to the drive case 30. ing.

On the other hand, at the upper end of the back surface of the seedling stand 12, mating seedling guide surfaces (rows) 12 _{1 to} 12 ₅ are respectively provided to correspond to the ridge planting levers.
85 are installed, and the lever 85 can rotate around the pin 85a along the guide 86 in a plane parallel to the seedling table plane. 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. Wire 90 has a long hole
It is connected to a plate 92 having a 92a. The plate 92 is arranged alongside the plate 80, and the long hole
The pins 72 and 79 are fitted to 92a. In addition, 8 in the figure
9a and 90a are outer wires of the wires 89 and 90, respectively.

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 nozzle.
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.

Then, when the planting work comes close to the ridge, it is necessary to stop planting in a predetermined row in order to match the number of planting lines, and therefore the ridge planting operation lever 85 corresponding to the predetermined row, for example, 12 ₁ and 12 ₂ is turned off. Rotate to the position. Then, the planter clutch is disengaged via the spring 87 and the wire 89 to stop the corresponding planter 11, and the plate 90 is engaged via the wire 90.
92 is moved in the direction of arrow C in FIG. 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 and rotate the ratchet 56 in the same manner as described above to rotate the belt. 65 is fed by a predetermined amount in the direction of arrow B and is held at the feeding position. As a result, even if the seedling placing table 12 reaches the left-right movement end 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.

(G) Effect of the Invention As described above, according to the present invention, the swinging members 70, 70
Since the drive case 30 is arranged only on the left and right sides, the contact timing between the drive transmission member 49 and the swinging members 70, 70 can be easily adjusted and set, while the swinging member 70 can be adjusted. , 70 and the drive case 30 are arranged so as not to interfere with each other, the seedling stand 12 can be arranged in front of and close to the drive case 30, and a rice transplanter, particularly two and a half mat seedlings can be placed. The front and rear balance of the rice transplanter 1 having the long seedling stand 12 can be well maintained, the planting performance can be improved, and the running performance can be improved by preventing head-up at the time of opening.

[Brief description of drawings]

1 is a plan view showing a planting part according to the present invention, FIG. 2 is a plan view in a different state, FIG. 3 is a side view thereof, and FIG. 4 is a plan view with a seedling stand removed. is there. Further, FIG. 5 is a cross-sectional view showing a slide bar and a connecting member, FIG. 6 is a side view showing a seedling feeding device, FIG. 7 is a plan view thereof, and FIG. 8 is a side view showing a main part thereof. . FIG. 9 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, 30 ...
Drive case, 32 ... Shaft case, 36 ... Stay, 37
... plate, 43 ... slide bar, 44 ... collar, 45 ... seedling feeding shaft, 46 ... connecting member, 46a ... fitting portion, 49 ... drive transmission member (rotating body), 51 ... seedling feeding device, 52 ... drive shaft, 55 ... driven shaft, 56 ... ratchet, 60 ... driving roller, 62 ... driven roller, 65 ... belt with protrusions, 70 ... oscillating member (oscillating cam).

Claims (1)

[Claims] 1. A drive case, a seedling stand that moves to the left and right with respect to the drive case, and a seedling feeding device that is rotatably supported by the seedling stand. In a rice transplanter that transmits driving force from the drive case at the end to the seedling feeding device and rotates the seedling feeding device by a predetermined amount in one direction to feed the seedlings, either left or right with respect to the drive case. A drive transmission member that is disposed on one side at a predetermined distance from the drive case and that is driven to rotate while protruding from the drive case, and is connected to the seedling feeding device and at the left and right moving ends of the seedling stand. And a pair of rocking members arranged on the side where the drive transmission member is arranged with respect to the drive case so as to alternatively contact the drive transmission member,
Moreover, the planting part structure in the rice transplanter is characterized in that the swinging member and the drive case do not interfere with each other even in the laterally moving position of the seedling stand.