JPH0724977Y2 - Planting control device for rice transplanter - Google Patents

Description

[Detailed description of the device] "Industrial application field" The present invention supports a planting machine equipped with a seedling mount and a planting claw with left and right running wheels, and varies the heights of the left and right running wheels. The present invention relates to a planting control device for a rice transplanter that horizontally supports the planting machine with respect to the rice field.

[Prior Art] Conventionally, as shown in Japanese Utility Model Laid-Open No. 55-90223, an elevating cylinder for raising and lowering a planting machine and a rolling cylinder for tilting the planting machine to the left and right are provided, and the planting machine is provided with left and right running wheels. There was a rice transplanter that provided a lock member that fixedly supported it in a horizontal position with respect to.

[Problems to be Solved by the Invention] In the conventional technology, when the planting machine is raised to the highest position, the planting machine is fixedly supported in a horizontal position with respect to the left and right running wheels. Since the attached aircraft is unstablely supported, it is necessary to support the planted aircraft at the highest lifted position when traveling on the road or loaded / unloaded on / from the carrier bed. Since the center of gravity became high and the running became extremely unstable, there were handling problems such as accidents such as rolling over when driving on a sloping road, entering a field, and loading / unloading a truck bed.

[Means for Solving the Problems] Therefore, the present invention is provided with an elevating cylinder for raising and lowering the planting machine and a rolling cylinder for tilting the planting machine to the left and right. In the planting control device of the rice transplanter equipped with a lock member that performs the tilting operation of the planting machine to the left and right, respectively, and fixedly supports the planting machine in the horizontal position with respect to the left and right running wheels, by operating the raising machine to raise the planting machine. Attach a lock member that forcibly performs the planting machine body fixing operation until the planting machine body rises to the maximum, and interlock the operation of the planting machine body raising operation by the lifting cylinder and the planting machine body fixing support operation by the lock member, Coordinate the operation of raising the planting machine with the lifting cylinder and the operation of the rolling cylinder to move the planting machine to the left and right running wheels. It is characterized in that it is provided with means for performing a horizontally supporting operation and means for stopping and maintaining the rolling cylinder in cooperation with the planting machine body fixing and supporting operation by the lock member.

[Operation] Therefore, when the planting machine is lifted, the rolling machine operates to horizontally support the planting machine with respect to the left and right traveling wheels, and the locking member fixes the planting machine at a lower position than before. It is fixed by, for example, when traveling with lifting the planted aircraft such as traveling on a slope, entering a field, loading and unloading on a truck bed, it can move more stably with a lower body center of gravity than before, from rollover or walk board It is possible to prevent derailment of the vehicle, simplify the handling operation, and improve the safety.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a side view of the main part, FIG. 2 is a side view of a walk-behind rice transplanter, and FIG.
The figure is a partial plan view of the same, in which (1) is an engine,
(2) is a mission case, (3) is a planting case connected to the mission case (2) through a transmission case (4), (5) is the engine (1) and each case (2)
(3) A bonnet covering the upper side of the planting machine body constituted by (4), (6) a bumper, (7) a steering handle that is connected to the planting case (3), and (8) a handle (7). ) Is mounted on the upper side of the guide rails (9) and (10) so as to be slidable right and left, and the front and rear rear heights of the seedling mounting table (11) are mounted on the planting case (3). (12) is attached to the planting case (3) via the planting arm (13) to take out one seedling from the seedling stand (8) and plant it. Planted claws, (14), (14) are the left and right swing cases (15a) (1) on the mission case (2).
5b) a pair of paddy wheels that are left and right traveling wheels that are liftably supported, and (16) are the swing cases (15a) (15
b) Swing rods with different left and right lengths (17a) (17
The lifting cylinder (18) which is connected via b) and controls the left and right paddy wheel (14) (14) to move in and out at the same time to raise and lower the rice transplanter is the engine (1) and each case (2) (3).
(4), a leveling float for planting rice field leveling which is supported on the lower side through a front link (19) and a planting depth lever (20), (21) a seedling of the planting claw (12) The pitching sensors (22a) and (22b) for detecting the elevation of the front part of the float (18) due to the change in the planting depth of the float (18) are arranged in front of the swing case (15) on both sides of the front part of the float (18). It is a horizontal rolling sensor that detects the inclination of the planting machine in the horizontal direction.

The engine (1) is connected to and supported by the mission case (2) via the vehicle body frame (23), and the lifting cylinder (16) is attached to the vehicle body frame (23). Connect and fix the middle of the pitching adjustment cylinder shaft (25) to the tip of the piston rod (24). Then, the middle of the rolling adjustment shaft (26) is rotatably inserted into the tubular shaft (25), and the pushing and pulling directions of the left and right swing rods (17a) (17b) are reversed by the rotation of the rolling adjustment shaft (26). Make sure that the arms (27) (2
The swing rod (17a) (17b) tip is connected via 7), and a rolling cylinder (28) that corrects the lateral inclination of the rice transplanter machine and keeps it substantially horizontal is provided, and the cylinder (28) is used as the cylinder shaft. It is attached to the (25) via the bracket (29) and connects the piston rod (30) of the cylinder (28) to the rolling adjustment shaft (26) via the arm (26a). The shafts (25) (26) are slidably displaced in the machine front-rear direction by the swing shafts (25) (26), and the rear ends of the left and right swing cases (15a) (15b) are connected via brackets (31) (31). ) (17
While pushing and pulling b) in the same direction to raise and lower the planting machine to keep the seedling planting depth substantially constant, the rolling adjustment shaft (26) is rotated by the control of the lifting cylinder (28), and the left and right swing rods ( 17a) and (17b) are pushed and pulled in different directions so that the left and right wheels (14) and (14) have different support heights so that the planted aircraft is supported substantially horizontally with respect to the rice field.

Further, as shown in FIG. 4, a hydraulic unit case (34) for driving and controlling the lifting cylinder (16) and the rolling cylinder (28) is provided, and the unit case (34) is placed in front of the engine (1) to the vehicle body frame ( 23) While being fixed to the upper surface, the front end of the U-shaped bumper (6) is continuously fixed to the front part of the vehicle body frame (23) through the support frame (35), and is also attached to the outside of the left and right swing cases (15). The left and right rear parts of the bumper (6) extending substantially to the front end in a substantially aligned manner are continuously fixed to both sides of the rear part of the vehicle body frame (23) through a support pipe (36), and the bumper (6) is integrated with the body. Fix it. A single fulcrum shaft (3) provided with a support link (37) fixed to the upper front ends of the rolling sensors (22a) and (22b) and continuously fixed to the lower left and right front parts of the bumper (6).
8) The link (37) is supported by loose fitting, the front ends of the sensors (22a) (22b) are rotatably supported in the front part of the bumper (6), and the rear ends of the sensors (22a) (22b) are supported. A pivotal support that rotatably connects the lower end of a vertical guide link (41) forming an elongated hole (40) to a fixing pin (39) provided on the end upper surface, and fixes it to the planting machine through the bumper (6). The shaft (42) supports the upper part of the link (41) through the long hole (40), and the descending and ascending ranges of the pivot shaft (42) for fixing the rear ends of the sensors (22a) (22b) to the machine body. Is configured to be regulated and supported so as to be vertically movable.

On the other hand, a balance rod (45) installed in the left-right direction of the machine body below a boss (44) rotatably fitted to the tip side of a rolling fulcrum shaft (43) provided in the upper part of the drive unit case (34).
An expandable sensor equipped with a turnbuckle (48) in the input arm (47) fixed to both ends of the inner shaft (46) that is rotatably fitted in the balance rod (45). The upper end of the arm (49) is connected continuously, and the lower end of the sensor arm (49) is connected continuously to the support link (37). The left and right rolling sensors (22a) (22b) move in the same direction substantially at the same time. When moving up and down, the left and right input arms (47) swing around the inner shaft (46) and the hydraulic unit case (3
While holding the rolling valve (50) provided in 4) in the neutral position, when the left and right rolling sensors (22a) (22b) move in different directions or only one of them goes up and down, the swing amount of the left and right links (37) (37). The balance rod (45) is oscillated around the rolling support shaft (43) by the difference between the two, and the rolling valve (50) is actuated to drive and control the rolling cylinder (28).

Further, the spool (52) of the rolling valve (50) is attached to the bracket (51) fixed to the left side of the balance rod (45).
Of the rolling valve (50) by sliding the spool (52) in the left-right direction of the machine by swinging the balance rod (45) around the rolling fulcrum shaft (43). It is configured to control operation.

Further, a pitching sensor (21) is connected to the hydraulic unit case (34) via the pitching sensor fulcrum shaft (53) and a connecting rod (55), and the sensor (21) connects the front part of the leveling float (18). The lift cylinder (16) is automatically actuated by detecting the lift operation of the lift lever (56), and the pitching sensor (21) is connected to the lift lever (56) provided on the steering handle (7). The lifting cylinder (16) is operated by the manual operation of (56).

Then, as shown in FIG. 5, a lock pin (66) which is a lock member for fixing the planting machine body at a fixed position is provided, and the pin (6) is attached to the cylinder shaft (25) through a lock frame (67).
6) is slidably supported, a lock plate (68) is fixed to the rolling adjustment shaft (26), and a notch (69) for locking the lock pin (66) is provided on the lock plate (68). Form. Then, the spring (70) for engaging the lock pin (66) with the notch (69) is attached to the lock pin (66).
And the lock pin (66) is connected to the elevating lever (56) through the lock wire (71).
When the lever (56) is moved upward, the lock pin (66) is advanced through the spring (70) in conjunction with the upward movement of the planting machine, and the pin (66) is moved to the notch (69) of the lock plate (68). ), The lock pin (66) is retracted against the spring (70) by the lowering operation of the lever (56) to disengage from the notch (69). When the pin (66) is locked, the heights of the left and right wheels (14, 14) with respect to the planting machine are substantially equal, and the planting machine is fixed at a fixed position.

The lock pin (66) is further provided with an unload valve (72) which is a rolling stop member for stopping the horizontal control in conjunction with the fixing operation of the planting machine, and the spool (73) of the valve (72) is provided. The lock pin (66) is connected via a wire (74), and when the lock pin (66) is engaged with the notch (69), the hydraulic pump (75) is interlocked with the lock pin (66) by the unload valve (72). It is configured to return the hydraulic oil from the oil tank to the oil tank (76).

Further, as shown in FIG. 1, the right swing rod (17b) is formed longer than the left swing rod (17a), and the lengths of the left and right swing rods (17a) (17b) which are return members are made different,
Left and right paddy wheels (14) (14) When the planting aircraft is in a horizontal position, the left and right swing rods (17a) (1
7b) and arms (27) (27) are arranged in a triangle, and the apex of the triangle formed by the left and right swing rods (17a) (17b) is connected to the left and right brackets (31) (31).
When the lifting cylinder (16) moves up and down, the arm (2
7) Move the (27) in parallel to move the left and right swing rods (17a).
The connection point between (17b) and the left and right brackets (31) and (31) is rotationally displaced in the same direction so that there is a difference in the swing amount of the left and right swing cases (15a) and (15b) when the lifting cylinder (16) operates. The lifting cylinder (16) with the rolling cylinder (28) fixed in the state shown in FIG.
The right swing case (15b) has a smaller swing angle than the left swing case (15a) when it is raised, and the planting machine is tilted to the right at the uppermost position. When the lifting cylinder (16) is lowered, the swing angle of the right swing case (15b) is larger than that of the left swing case (15a), and the planting machine should be tilted to the right even at the lowest position. , When the planting machine is supported substantially horizontally with respect to the left and right paddy wheels (14) (14) on a flat ground, the planting machine in the lowered position is lifted by the lifting cylinder (16) operation to move the planting machine. Tilt it to the left and raise it,
Fig. 1 When reaching the position and raising it further, tilt the planting machine to the right and raise it, and the left and right paddy wheels (14) (14) while the planting machine is rolling due to the rise.
When it is horizontal with respect to the left and right paddy wheels (14) (14), the lock pin (66) performs the fixing and supporting operation of the planting machine at a position lower than the highest position. It is supported horizontally so that it can be run on the road or loaded onto and unloaded from the truck bed. It swings the left and right swing cases (15a) (15b) more than the horizontal control angle (for example, 3 degrees left and right) by the rolling cylinder (28). Angular difference (for example, 6 degrees or more)
Is set to a large value, and the left and right wheels (14) while the planting machine is in the process of rising
It is configured to be temporarily supported horizontally with respect to (14).

This embodiment is configured as described above, and the seedling placing table (8) is reciprocally moved to the left and right, and the planting claws (12) are moved from the seedling placing table (8).
The seedlings for one plant are taken out one after another and planted. The elevator cylinder (16) is operated by operating the elevator lever (56) to raise and lower the planting machine to change the direction at the ridge and Flat float due to unevenness of the board (18)
As the front part moves up and down, the pitching sensor (21) moves up and down, the lift cylinder (16) operates, and the planting machine moves up and down to keep the grounding pressure of the leveling float (18) at a substantially constant level. Keep the seedling depth of the nails (12) approximately constant. Also, because the planting machine tilts left and right due to changes in the unevenness of the cultivator,
The left and right rolling sensors (22a) (22b) move up and down in different directions, and only one of them moves up and down, and the rolling cylinder (28) operates to tilt the planting machine to the left and right, and plant it on the planting paddy field. Keep the aircraft almost horizontal.

When the rice planting work is further completed by lowering the planting machine, and when climbing the ridges or traveling on the road, raising the planting machine by operating the elevating lever (56) raises the steps on the left and right wheels (14) (14). As a result, the machine rises, so the rolling cylinder (28) is controlled and the machine rises to correct the lateral tilt due to the rise, and the lock pin (66) causes the spring ( Since it is projected in the direction of the lock plate (68) by 70), the lock pin (66) is passed when the planting machine passes the position where it becomes horizontal with respect to the left and right wheels (14) (14) by the rolling control accompanying the lifting of the machine. Engages in the notch (69) and fixes the planting machine in place. The unload valve (72) is switched in conjunction with the fixing operation of the lock pin (66), and the rolling cylinder (28) To stop the control .

Further, FIG. 6 shows another embodiment, which is provided with a return valve (57) which is a return member for returning the planting machine to the home position direction in conjunction with the raising operation of the planting machine and is fixed to the machine. The balance rod (60) via the boss (59) on the fulcrum shaft (58)
The left and right swing cases () are rotatably supported in the middle, and arms (62) (62) and rods (63) (63) are inserted at both ends of an inner shaft (61) that is loosely fitted and inserted into the balance rod (60). 15a) (1
5b) is connected, and the spool (65) of the return valve (57) is connected to the left side of the balance rod (60) through the bracket (64). Like the rolling valve (50), the left and right When the swing cases (15a) (15b) move up and down in different directions, the balance rod (60) is swung to switch the return valve (57).

Further, a select valve (77) connected to the hydraulic pump (75) via the unload valve (72) to communicate with either the rolling valve (50) or the return valve (57) is provided, and the select valve (77) is provided. ) Spool (7
8) Connect the lifting lever (56) to the lever (56)
The rolling valve (50) is made to communicate with the hydraulic pump (75) by the lowering operation of the above, and the return valve (57) is made to communicate with the hydraulic pump (75) by the raising operation of the lever (56).

In addition, the rolling valve (50) and the return valve (57) are connected to the rolling cylinder (28) via check valves (79), and when the planting machine is descending, the rolling valve (50) is passed through the rolling valve (50). The rolling cylinder (28) is operated to support the planting machine approximately horizontally to the rice field, and when the planting machine is raised, the rolling cylinder (28) is operated via the return valve (57). The support heights of the left and right wheels (14) (14) are kept substantially equal to the planted machine body.

Then, when the planting work is completed and the ridge is crossed or the vehicle travels on the road, by raising the planting machine by operating the lifting lever (56), the select valve (77) operates in conjunction with the raising operation of the lever (56). Switched and return valve (5
7) through hydraulic pump (7) to rolling cylinder (28)
5) are connected, and when the support heights of the left and right wheels (14) (14) are different, the rolling cylinder (28) is operated and controlled through the return valve (57) to control the left and right swing cases (15a) (15b). ) Are supported at substantially the same height, and the heights of the left and right wheels (14) (14) with respect to the planted machine are made substantially equal,
Lock pin (66) when raising and lowering the lever (56)
Is protruded toward the lock plate (68) by the spring (70), the notch (69) of the lock plate (68) is controlled by the return valve (57) that returns the planting machine to the fixed position direction. The lock pin (66) engages with the notch (69) to lock the planting machine in place, and the lock pin (66) engages with the notch (69). When this is done, the unload valve (72) is switched in conjunction with this, returning the hydraulic oil from the hydraulic pump (75) to the oil tank (76) and rolling cylinder (28).
The control is stopped.

Further, FIG. 7 shows another embodiment, which is provided with left and right return valves (80) (81) which are return members for returning the planting machine to the fixed position in conjunction with the raising operation of the planting machine. , Piston rod (30) of rolling cylinder (28)
The return valve (80) through the switching arm (82)
When the spools (83) and (84) of (81) are connected and the heights of the left and right wheels (14) and (14) are approximately equal, the piston rod (30) is connected to the return valve when the planting machine is supported at a fixed position. (80) (81) neutral position,
The select valve (7
When 7) is switched, the rolling valve (28) is operated via the return valves (80) (81) in conjunction with the advance / retreat of the piston rod (30) to return the piston rod (30) to the neutral position. As in the above embodiment, the planting machine is returned to the fixed position and the lock pin (66) is moved to the lock plate (6
The notch (69) of 8) is engaged to fix the planting machine in place.

As is clear from the above, the lifting cylinder (16) for raising and lowering the planting machine and the rolling cylinder (28) for tilting the planting machine to the left and right are provided. The rocking pin (66), which is a locking member for horizontally tilting the planting machine by the (28) and supporting the planting machine horizontally with respect to the left and right running wheels (14) (14), is provided. In the planting control device of the rice transplanter equipped with, a lock pin (66) for forcibly performing the fixing operation of the planting machine before the planting machine is fully raised by the operation of raising the planting machine by the lifting cylinder (16). Installation and raising operation of the planting machine by the lifting cylinder (16) are linked with the operation of fixing and supporting the planting machine by the lock pin (66), and lifting operation of the planting machine by the lifting cylinder (16). Swing rod (17a) (17b) or return which is a means to perform the operation of horizontally supporting the planted machine to the left and right paddy wheel (14) (14) by linking the operation with the operation of the rolling cylinder (28). A valve (57) (80) (81) and an unload valve (72) that is a means for stopping and maintaining the rolling cylinder (28) in conjunction with the planting machine fixed support operation by the lock pin (66) are provided, The rolling cylinder (28) operates to support the planting machine horizontally with respect to the left and right paddy wheels (14) (14) when the planting machine raising operation is performed, and the lock pin (6
It is configured to be fixed by 6).

[Advantages of the Invention] As is apparent from the above embodiments, the present invention is provided with the lifting cylinder (16) for raising and lowering the planting machine and the rolling cylinder (28) for tilting the planting machine to the left and right. ) And the rolling cylinder (28) perform the tilting operation of the planting machine left and right, respectively, and the locking member (66) that fixes and supports the planting machine in a horizontal position with respect to the left and right running wheels (14) (14). In the planting control device of the rice transplanter, the lock member (66) forcibly performing the fixing operation of the planting machine before the planting machine is fully raised by the operation of raising the planting machine by the lifting cylinder (16). )
The lifting cylinder (16) is used to interlock the raising operation of the planting machine with the lock member (66), and the lifting and lowering cylinder (16) is used to raise the planting machine and the rolling cylinder. Means (17a) (17b) (5) for coordinating the operation of (28) to carry out the operation of horizontally supporting the planted aircraft with respect to the left and right traveling wheels (14) (14).
7) (80) (81) and the rolling cylinder (28) in conjunction with the operation of fixing the planting machine by the lock member (66).
A means (72) for stopping and maintaining the planting machine is provided so that the planting machine is supported horizontally by the rolling cylinder (28) during the raising operation of the planting machine to the left and right traveling wheels (14) (14). Since it is fixed by (66), the planting machine is fixed at a lower position than before by the locking member (66), and for example, when driving uphill, such as traveling on a slope, entering the field, loading and unloading on the truck bed. When traveling, you can move more stably with a lower body center of gravity than before, you can prevent overturning or derailing from the step board, simplifying handling operations and improving safety easily. Is something that can be done.

[Brief description of drawings]

FIG. 1 is a side view of a main part showing an embodiment of the present invention, FIG. 2 is a side view of the whole, FIG. 3 is a plan view of the main part, FIG. 4 is the same side view, and FIG. Circuit diagrams, FIGS. 6 and 7 are hydraulic circuit diagrams showing another embodiment. (14) …… Running wheels (paddy wheels) (16) …… Elevating cylinders (17a) (17b) …… Swing rods (28) …… Rolling cylinders (57) (80) (81) …… Return valve (66 ) …… Lock pin (lock member) (72) …… Unload valve

Claims (1)

[Scope of utility model registration request] 1. An elevating cylinder (16) for elevating a planting machine.
And a rolling cylinder (28) that tilts the planting machine to the left and right. The raising and lowering cylinder (16) vertically moves the planting machine and the rolling cylinder (28) tilts the planting machine to the left and right. In a planting control device of a rice transplanter equipped with a lock member (66) for fixedly supporting the aircraft in a horizontal position with respect to the left and right traveling wheels (14) (14), planting is performed by an operation of raising the planting machine by the lifting cylinder (16). A lock member (66) for forcibly performing the planting machine fixing operation is attached until the machine body rises to the maximum, and the operation for raising the planting machine body by the lifting cylinder (16) and the locking member (6
While interlocking the fixed support operation with the planting machine by 6),
Means for coordinating the operation of raising the planting machine with the lifting cylinder (16) and the operation of the rolling cylinder (28) to horizontally support the planting machine with respect to the left and right traveling wheels (14) (14). (17a) (17b) (57) (80) (81) and a means (7) for stopping and maintaining the rolling cylinder (28) in conjunction with the operation of fixing the planting machine body by the lock member (66).
2) A planting control device for rice transplanters, which is provided with