JPH0746931B2 - Ridge operation device in rice transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling feeding device for vertically feeding seedlings on a seedling stand in a rice transplanter, especially a riding rice transplanter equipped with a seedling stand. Relates to a ridge planting operation device for stopping the drive of the seedling feeding device and the planter.

(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, there are few portions that bite into the seedlings, which may cause the seedlings to drop or the seedlings to be fed vertically.

Therefore, conventionally, for example, as shown in JP-A-59-71613 and JP-A-59-147410, a belt with protrusions is wound between a driving roller and a driven roller, and the belt has a large area. A seedling feeding device for vertically feeding seedlings has been devised.

The seedling feeding device disengages the clutch of the predetermined planter at the same time as disengaging the clutch of the predetermined planter based on the operation of the ridge planting operation lever provided near the driver's seat in the traveling machine body when stopping the planting of the predetermined ordinance at the ridgeline or the like. It is configured to stop the vertical feeding of seedlings corresponding to.

(C) Problems to be solved by the invention However, since the above-described conventional ridge planting operation lever is installed near the driver's seat, a seedling feeding device arranged on the seedling stand that reciprocates in the left-right direction. Therefore, the Bowden wire connecting the operation lever and the seedling feeding device is bent and stretched each time the seedling stand moves sideways. Therefore, the life of the wire is significantly shortened, and the wire needs to be set longer depending on the state where the seedling stand is located at the left and right movement ends, that is, the far position. The large bend makes the operation of the ridge operation lever extremely heavy.

Therefore, the present invention, regardless of the lateral movement of the seedling stand,
An object of the present invention is to provide a ridge planting operation device that solves the above-mentioned problems by always keeping the positional relationship between the ridge planting operation lever and the seedling feeding device constant.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and for example, as shown in FIGS. 1 and 2, a plurality of seedling guide surfaces 12 ₁ corresponding to the planters 11 ₁ The seedling stand 12 provided with ~ 12 ₅ is arranged in the planting part main body 29 so as to be reciprocally movable in the left-right direction, and further the seedling feeding device 51 is arranged on each seedling guide surface 12 ₁ ~ 12 ₅ of the seedling stand. Set up,
In a rice transplanter that moves the seedling stand 12 in the left-right direction and drives the seedling feeding device at the left-right moving end of the seedling stand 12, the seedling stand 12 is always driven regardless of the left-right position. The driving bodies 49, 50 are connected to the seedling feeding device 51 and move in the left-right direction together with the seedling placing table 12 and are engaged with the driving bodies 49, 50 at the left and right moving ends of the seedling placing table 12. Drive transmission means 70, 72, 80, 79, 75 for transmitting a driving force from the driving bodies 49, 50 to the respective seedling feeding devices 51, and a planter clutch 91, and are substantially parallel to the seedling stand 12 A corresponding seedling guide surface 12 among the seedling guide surfaces 12 _{1 to} 12 ₅ on the back surface of the seedling stand 12 so as to be rocked to a different plane.
Arranged corresponding to _{1-12 5,} furrow planting operation lever 85 capable of stopping the drive of the planter 11 by the swing operation, ... and該畦planting operation lever 85, is connected to ...該畦planting operation Based on the operation of the lever, the drive transmission members 79, 75 forming the drive transmission means 70, ... Are moved to predetermined positions to cut off the drive force transmission by the drive transmission means 70 ,.
The drive of the planter 11 is stopped based on the rocking operation of the ridge planting operation levers 85, ..., And the drive force transmission between the seedling feeding device 51 and the driving bodies 49 ,. It is characterized by doing so.

(E) Action Based on the above configuration, when the seedling placing table 12 reaches the left and right moving ends in the planting work, the drive transmission means 70, 72, 80, 79, 75 are
The seedling feeding device 51 is driven by being engaged with the driving bodies 49 and 50 and transmitting the driving force. As a result, the seedlings on the seedling guide surfaces 12 _{1 to} 12 ₅ are fed vertically one pitch at a time.

Then, when the planting work comes close to the ridge and the predetermined ridge planting operation levers 85, ... Are rocked, the drive of the planter 11 is stopped, and at the same time, the drive transmission members 79, 75 are moved to the predetermined positions. Then, the transmission of the driving force between the seedling feeding device 51 and the driving bodies 49, ... Is cut off.

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

As shown in FIG. 8, 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 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, 2, and 4, a drive case 30 that constitutes a planting part main body 29 is arranged on the back surface of the seedling stand 12, and the drive case is further provided. A large number of planter cases 35 are arranged via a shaft case 32 extending leftward and rightward from a lower portion of 30. A stay 36 extends in the left-right direction from the drive case 30, and posts 39 are provided upright on the left and right portions of the stay 36, and a slide piece 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 on the portion 40 and the planter case 35. 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 bracket 46. In addition, a rotating body (driving body) 49 is attached to the tip of the seedling feeding shaft 45.
Is fixed, and a pin (driving body) 50 is planted at the tip of the rotary body 49.

On the other hand, the lower part of the rear surface of the seedling stand 12 corresponds to the mat seedling guide surfaces 12 _{1 to} 12 ₅ of the seedling stand 12, respectively, and a seedling feeding device 51.
Is provided, and the feeding device 51 is shown in FIGS.
As shown in detail in the figure, it is rotatably supported by a bracket 12b fixed to the seedling stand 12 and includes a drive shaft 52 and a driven shaft 55. The drive shaft 52 further includes a ratchet 56 and a drive roller 60. The driven roller 62 is fixed and is rotatably supported by the driven shaft 55. A belt 65 having a large number of protrusions 65a between the drive roller 60 and the driven roller 62 is provided.
, 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 the shaft 70, and the tip end of the cam 70 abuts the pin 50 of the rotating body 49 to oscillate, and a pin drive transmission means 72 is planted in the intermediate part. . An arm (drive transmission member) 75 is rotatably supported by the drive shaft 52. The arm 75 has a pawl 76 engaging with the ratchet 56 on one side thereof and the other side thereof. A pin (drive transmission member) 79 is planted. And
As shown in detail in FIG. 7, a plate 80 having an elongated hole 80a
The pins 72 and 79 are fitted and arranged at both ends of the elongated hole 80a. Normally, the swing of the swing cam 70 is controlled by the arm 75.
Have been communicated to. The arm 75 and the fixed bracket 12b
A spiral spring 82 is arranged between the arm 75 and the
It is biased to the position shown by the solid line in the figure, and the pawl 76
It is urged to engage with the ratchet 56 by a tangled spring.

On the other hand, the upper end portion of the seedling platform 12 back surface, are installed furrow planting operation lever 85 ... corresponding to a predetermined ridges of the respective mat seedling guiding surfaces (ridges) 12 ₁ to 12 _5, The lever 85 is a guide 86
Along the guide groove 86a (Fig. 3), the pin 85a can be swung 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 connected to a planter clutch (arm) 91 of the planter case 30. The other wire 90 has a long hole 92a.
Is connected to a plate 92 having a. The plate 92 is arranged side by side with the plate 80, and its long hole 92a
The pins 72 and 79 are fitted in the pin. And pin 79
Is configured to be moved via the plate 92 to a position where the connection between the pin 72 and the plate 80 is released. 89a and 90a are Bowden wires 8 respectively.
It is 9,90 outer wires.

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 FIGS. 5 and 7 to the chain line. Moved from position to chain line position. Then, the plate 80 is moved via the pin 72, and the pin 79 is moved.
The arm 75 is moved to the position indicated by the chain line via the, and the pawl 76 is rotated to rotate the ratchet 56 integrally with the pawl 76. Further, the drive roller 60 is rotated integrally with the ratchet 56,
The protrusion belt 65 is fed in the direction of arrow B by a predetermined amount, whereby the mat seedlings on the seedling stand 12 are fed vertically by one pitch. Then, when the seedling placing table 12 returns from the left and right moving ends, the swing cam 70 is disengaged from the rotating body 49, and the arm 75, the plate 80, and the swing cam 70 are in the original positions shown by the solid line based on the restoring force of the spring 82. Returned to. At this time, the claw 76 is returned together with the arm 75, but the claw 76 and the ratchet 56 are disengaged, and the ratchet 56 and thus the drive roller 60 and the belt 65 are not returned and are held at the feeding position. It

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 planting rows. Therefore, the ridge planting 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 91 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 ₅ are not moved, and the vertical feeding is stopped and held.

At this time, the seedling stand 12 always moves in the left-right direction, but the ridge planting operation lever 85 is directly installed on the seedling stand 12 and moves left and right integrally with the seedling feeding device 51, so that the positional relationship between them is large. Is always kept constant. Therefore, the Bowden wire 90 extends in a substantially straight line to connect the operation lever 85 and the plate 92, and the ridge planting operation lever 85 and the planter clutch 91.
Although the positional relationship between the control lever 85 and the planter clutch 91 is changed, since the operation levers 85 and the planter clutch 91 are substantially aligned in the left-right direction and are located substantially vertically in a predetermined distance, Coupled with the fact that the amount of movement is small compared to the above vertical distance, the wire 89 does not bend significantly. Also, due to the long length of the seedling stand 12,
The upper end of the seedling stand 12 is located near the driver's seat 9, and especially when the planting part 10 is raised, the driver's seat can easily reach the ridges while sitting on the seat 7, and the ridge planting lever Combined with the fact that 85 corresponds to the prescribed seedling stand guide surface 12 _{1 to} 12 ₅ ,
The driver can easily operate the ridge planting lever 85 without making any mistakes.
Can be operated.

As a result, the friction between the inf and the outer of the wires 89, 90 can be reduced, and the operation lever 85 can be operated lightly.
Further, since the wire 89 does not bend or stretch even by the lateral movement of the seedling placing table 12, the plate 92 is accurately positioned in the seedling feeding operating position and the seedling feeding operating stop position without being affected by the lateral movement of the seedling placing table 12. , So pin 79 and plate 92
The positional relationship with the end of the elongated hole 92a can be maintained in the same relationship in all the seedling feeding devices 51 of the regulations, and the vertical feeding amount of the regulations of the regulations can be uniformly maintained.

(G) Effect of the Invention As described above, according to the present invention, the ridge planting operation lever is provided.
Since 85 was installed on the back of seedling stand 12, wire 89 (90)
It is possible to prevent the bending of the wire and prolong the life of the wire, and to reduce the operating force of the operating lever 85.
Further, the effect on the seedling feeding device 51 due to the bending and stretching of the wire 89 can be eliminated, and the seedling feeding device 51 can perform an accurate seedling feeding operation with a uniform vertical feed amount of the seedlings.

Further, when the ridge planting operation lever 85 is configured to swing on a plane substantially parallel to the seedling stand 12, the swing operation is performed in a direction (vertical direction) orthogonal to the operation lever 85 and the seedling stand plane. The operating space, especially the operating space in the vertical direction, is smaller than that of the conventional one, so that the planting section 10 can be brought closer to the rear wheel 23, and the front and rear balance of the rice transplanter 1 can be improved, and It is possible to prevent the buckling of the seedlings even if the slanting upper end portion of the seedling stand 12 can be made gentle and the long seedling stand 12 is used.

Further, since the driving force transmission member 79 is connected to the seedling feeding device 51 side and is normally stationary, when the driving force transmission member is moved by the feeding stop means 92, the driving force transmission member 79 and the feeding stop are stopped. There is no wear with the means 92, and there is no wear with the driving force transmission member 79 and the seedling feeding device 51, and the durability is high. Further, since it is not necessary to consider wear prevention, material selection becomes simple and the cost of the device can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a seedling feeding stop portion of a ridge planting operation device according to the present invention, FIG. 2 is a plan view showing a planter stop portion thereof, and FIG. 3 is an enlarged side view showing a guide of a ridge planting operation lever. Is. FIG. 4 is a side view showing the planting part, and FIG.
Fig. 6 is a side view showing the seedling feeding device, Fig. 6 is its plan view,
FIG. 7 is a side view showing a main part thereof, and FIG. 8 is a side view showing a riding rice transplanter to which the present invention can be applied. 1 ... (passenger) rice transplanter, 10 ... planting section, 11 ... planter, 12 ...
Seedling stand, 12 ₁ ~ 12 ₅ ... Seedling guide surface, 43 ... Slide bar, 51
… Seedling feeding device, 56… Ratchet, 60… Drive roller, 62
... driven roller, 65 ... belt with protrusion, 70 ... drive transmission means (swing cam), 72 ... drive transmission means (pin), 75 ... arm, 76 ... claw, 80 ... plate, 85 ... ridge planting lever, 79 …
Drive transmission member (pin), 86 ... Guide, 89 ... Wire, 90 ...
Wire, 91 ... Planter clutch (arm) 1, 92 ... Feeding stop means (plate), 92a ... Long hole.

Claims (1)

[Claims] 1. A seedling stand provided with a plurality of seedling guide surfaces corresponding to planters is arranged in the planting section body so as to be reciprocally movable in the left-right direction, and further seedling feeding is performed on each seedling guide surface of the seedling stand. A rice transplanter comprising a device for moving a seedling stand in the left-right direction and driving a seedling feeding device at the left-right moving end of the seedling stand, regardless of the left-right position of the seedling stand. A driving body which is constantly driven, and which is connected to the seedling feeding device and moves in the left-right direction together with the seedling stand, and is engaged with the driving body at the left and right moving end of the seedling stand so that A drive transmission means for transmitting a driving force to each seedling feeding device and a planter clutch, and each of the seedlings on the back surface of the seedling stand so that the seedling stand is rocked in a plane substantially parallel to the seedling stand. It is arranged corresponding to the corresponding seedling guide surface of the guide surface A ridge planting operation lever capable of stopping the drive of the planter by the swing operation, and a drive transmitting member which is connected to the ridge planting operation lever and constitutes the drive transmitting means based on an operation of the ridge planting operation lever are provided in a predetermined manner. And a feeding stop means for moving the driving force to the position to cut off the driving force transmission by the drive transmitting means, and stopping the drive of the planter based on the rocking operation of the ridge planting operation lever, and the seedling feeding device and the drive. A ridge-planting operation device for rice transplanters, which is characterized by cutting off driving force transmission to and from the body.