JPH063A - Rice transplanter - Google Patents

Abstract

PURPOSE:To improve the puddling and leveling operation efficiency with puddling members in a hard field by installing a member capable of automatically regulating the puddling depth of the puddling members interlocking with the planting depth regulating operation with planting pawls. CONSTITUTION:The rice transplanter is equipped with puddling members 35 in front of a seedling planting position of planting pawls 17 to automatically regulate the puddling depth of the puddling members interlocking with the planting depth regulating operation with the planting pawls using cylinders 41. The height of rotary pawls 47 is regulated by operating the puddling cylinders with a relative sensor 58.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter equipped with a seedling table and a planting claw for continuously performing seedling planting work.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 2-145101 or Japanese Utility Model Laid-Open No. 2-116915, there has been a technique in which a scraping member for leveling a planted rice field is provided so as to be vertically movable.

[0003]

The above-mentioned prior art discloses a technique for changing the number of revolutions of the scraping member in association with the sensitivity adjustment for raising and lowering control of the planting part. Since there is no member for automatically adjusting the above, there is a problem in that it is not possible to easily carry out a leveling work for scraping in accordance with working conditions such as hardness and softness of the field or soil quality.

[0004]

According to the present invention, however, a scraping member is provided up and down freely in front of a seedling planting position of a planting nail and a planting depth sensor for detecting a change in planting depth of seedlings is provided. In a rice transplanter that automatically adjusts the planting depth of the planting claw, it is provided with a member that automatically adjusts the planting depth of the planting claw member in conjunction with the planting depth adjusting operation of the planting claw. Since the scraping depth is automatically adjusted according to the change of the planting depth of the nail, the scraping leveling workability by the scraping member in a hard field can be easily improved, and the leveling function of the scraping member and the seedling planting work can be improved. It is possible to easily increase the speed.

Further, a scraping member is provided up and down in front of the seedling planting position of the planting claw, and a planting depth sensor for detecting a change in planting depth of the planting claw is provided to automatically adjust the planting depth of the planting claw. In the rice transplanter to be performed in, a substitute scratching sensor for detecting the relative position between the substitute scratching member and the rice field is provided, and it is configured to adjust up and down the substitute scratching member based on the detection results of the plant depth sensor and the substitute scratching sensor. Therefore, it is possible to easily improve the leveling workability of the scraping of the paddy field by the scraping member and prevent the deterioration of the seedling planting posture due to water flow and mud pushing.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of the scraping member, FIG. 2 is an overall side view,
FIG. 3 is a plan view of the same, in which (1) is a traveling vehicle on which an operator rides, and a rear end of a vehicle body frame (3) on which an engine (2) is mounted is connected to a mission case (4). The front wheels (6) for traveling paddy fields are supported in front of the mission case (4) through an axle case (5), and a transmission case (7) is provided on both sides of a rear portion of the mission case (4).
And the rear wheels (8) for traveling paddy fields are supported at the rear end of the transmission case (7). Then, while mounting the preliminary seedling mounts (10) on both sides of the bonnet (9) that covers the engine (2) and the like, cover the mission case (4) and the like with the vehicle body cover (12) that forms the step (11), A driver's seat (13) is attached to the upper part of the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) at the rear of the hood (9).

Further, (15) in the drawing is a planting section comprising a seedling table (16) for planting 6 rows, a plurality of planting claws (17), etc. Forward tilting seedling stand (1
6) is supported on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and at the same time, the rotary case (21) is rotated at a constant speed in one direction. The nail case (22) (22), which is a pair of planting arms, is disposed in a symmetrical position about the rotation axis of the case (21) and supported by the case (20). Attach the planting claws (17) (17) to the. A support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a three-point link mechanism (27) including a top link (25) and a lower link (26) is provided. The link mechanism (27) by connecting the support frame (24) to the rear side of the traveling vehicle (1).
Lifting cylinder (2) that lifts and lowers the planting part (15) via
8) is connected to the lower link (26), and the front and rear wheels (6) (8) are driven to move at a substantially constant speed, and at the same time, reciprocally slide left and right for one share from the seedling stand (16). The seedlings are picked up by the planting claws (17) and the seedling planting operation is continuously performed.

Further, reference numeral (29) in the drawing denotes a traveling speed change lever,
(30) is a planting lift lever, (31) is a planting sensitivity adjustment lever, (32) is a traveling clutch pedal, (33) (3
3) is a brake pedal, (34) is a center float for central two-part leveling, (35) is a left and right scraping member for leveling two left and right parts, (36) is a side fertilizer applicator, and (37) is a chemical agent. It is a spreader.

Further, as shown in FIGS. 1, 4 and 5, the center float (34) is supported on the plant depth adjusting shaft (38) of the planted case (20) through the plant depth adjusting link (39). . In addition, a piston rod (44) of the cylinder (41), in which an electric scraping cylinder (41) having a lifting motor (40) is attached to a seedling stand support frame (42) via a bracket (43) and is projected downward A scraping frame (45) is fixed to the lower end, and a scraping rotary pawl (47) driven by an electric scraping motor (46) is attached to the frame (4).
5) via a rotary shaft (48), a rotary cover (49) is fixed to the upper side of the rotary claw (47), and a flat cover is provided at the rear end of the cover (49) via a fulcrum shaft (50). (51) The front end side is connected and the rear end side of the leveling cover (51) is elastically pressed against the rice field by the spring (52). The rotary claw (47) and the leveling cover (5)
1) and the like are provided on the scraping member (35), and the rear clumps of the rear wheel (8) are crushed by the rotary claws (47) and the left and right leveling covers (51) are used to even out the planted rice field for two left and right rows. In addition to flattening, water drain holes (53) ... Are formed in the middle position of the front and rear width of the leveling cover (51), and water on the front surface of the cover (51) is moved rearward from the hole (53), It is configured to prevent water from being retained at the claws (47).

Further, as shown in FIGS. 1, 6, 7 and 8, an automatic switch (54) and a main clutch pedal (3) are provided.
2) the main clutch switch (55) that is turned off when the switch is in the on position and turned on when the switch is turned off, and the planted up / down switch (5) that is turned on when the planting up / down lever (30) is moved down or the auxiliary shift operation is performed.
6), a planting speed switch (57) that is turned on by a planting traveling (forward low speed) operation of the traveling speed change lever (29), and a potentiometer-type relative sensor (for detecting the control amount of the scraping cylinder (41). 58) and the center float (3
4) Potentiometer type planting depth sensor (5) for detecting changes in seedling planting depth of planting claws (17) by raising and lowering the front part.
9) and a potentiometer type scratching sensor (60) for detecting the relative position between the rotary claw (47) of the scratching member (35) and the rice field by the vertical movement of the rear end of the leveling cover (51), A planting control circuit (61) composed of a microcomputer is provided, and the switches (54) to (5) are provided.
7) and the sensors (58) to (60) are input-connected to the control circuit (61).

Further, the control circuit (61) is connected to the scraping motor (46), and the electromagnetic hydraulic lifting valve (62) for operating the lifting cylinder (28) is planted ascending and descending circuits (63) (64). ) Via the control circuit (61)
And a lift circuit (65) for the lift motor (40) that connects the power supply and activates the charge cylinder (41).
The control circuit (61) is connected via (66).

Then, as shown in the flow chart of FIG. 9, the automatic switch (54) is on, the main clutch switch (55) is off, the planting up / down switch (56) is on, and the planting speed switch (57) is on. When, the scratch motor (4
6) is actuated to rotate the rotary pawl (47), and the rotary speed of the rotary pawl (47) causes mud pushing unless the peripheral speed at the ground contact point with the paddy field is equal to or higher than the planting traveling speed. The high rotation of the claw (47) accelerates the water flow at the planting seedling part, disturbing the planting posture of the already planted seedling, so that the peripheral speed of the rotary claw (47) is slightly higher than the running speed at planting. In addition, the rotation of the rotary pawl (47) is controlled, and the leveling cover (5) is crushed by the rotary pawl (47).
According to 1), the rice field is made even.

Further, the elevation cylinder (28) is controlled by the planting depth sensor (59) input, the scratch sensor (60) input, and the relative sensor (58) input to control the lifting cylinder (28) according to the planting depth change of the planting claw (17). In addition to performing the depth adjusting operation, when the planting depth adjusting operation changes the substituting depth, or the mud pushing amount of the leveling cover (51) changes, the substituting cylinder (41) is controlled. The center float (34) makes the planting rice field surface leveled and the leveling cover (51) make the planting rice field surface leveled at substantially the same height. Is configured as follows.

As is apparent from the above, the planting nail (17)
In front of the seedling planting position of the plant, a scraping member (35) is provided so as to be able to move up and down, and a planting depth sensor (59) that detects a change in planting depth of the planting is provided to automatically adjust the planting depth of the planting claw (17). In a traditional rice transplanter, which is provided with a scraping cylinder (41) which is a member for automatically adjusting the scraping depth of the scraping member (35) in conjunction with the planting depth adjusting operation of the planting claw (17). Then, the relative scratching cylinder (41) is actuated by the relative sensor (58) to position the height of the rotary claw (47) to change the planting depth and the residual scratching depth in an interlocking manner, 35) and the scratch sensor (6
0) is provided, and the depth sensor (59) and the scratch sensor (6) are provided.
The scraping member (35) is adjusted up and down based on the detection result of (0) to improve the levelness in a hard field and the rotary claw (47).
It is possible to prevent lodging of already planted seedlings due to the water flow.

Further, FIGS. 10 and 11 show a modified example of FIGS. 1 and 5, wherein a float (67) having a U-shape in plan view is provided, and the rear end of the leveling cover (51) is floated ( 67) is brought into contact with the U-shaped intermediate upper surface of the float (6)
Arrange the rotary claw (47) inside the U-shaped enclosure of 7),
The crushed soil of the rotary pawl (47) is leveled by the float (67), and the water flow generated by the rotary pawl (47) is moved to the left and right and the rear (6).
7), while the planting part (15) is lowered, the float (6) is attached to the skimming frame (45).
The load is applied by 7) to prevent deformation and damage of the rotary pawl (47).

As shown in FIG. 8, each switch (55)
(56) (57) is provided and the rotary pawl (47) is rotated only during the planting work.
Can be easily omitted, and a hydraulically driven scratching motor (46) can be easily provided in place of the electric scratching motor (46) in the above embodiment, and the rotary shaft (48) can be easily provided.
The rotary claw (47) can be easily driven by connecting the drive shaft of the planting part (15) to the drive shaft of the planting part (15) by using the flexible transmission shaft. It is also possible to easily interlock the raising and lowering of the and the scraping member (35) by a mechanical link connection.

[0017]

As is apparent from the above embodiments, according to the present invention, the scraping member (3) is provided in front of the seedling planting position of the planting claw (17).
In the rice transplanter, which is capable of automatically adjusting the planting depth of the planting claw (17) by providing the planting claw (5) which is vertically movable and which is provided with a planting depth sensor (59) for detecting a change in the planting depth of the seedling. A member (41) for automatically adjusting the depth of scratching of the scratching member (35) is provided in conjunction with the planting depth adjusting operation of (17),
Since the scraping depth is automatically adjusted by changing the planting depth of the planting claw (17), the scraping leveling workability by the scraping member (35) in a hard field can be easily improved, and the scraping member ( It is possible to easily improve the leveling function of 35) and speed up the seedling planting work.

Further, in front of the seedling planting position of the planting claw (17), a scraping member (35) is provided so as to be able to move up and down, and a planting depth sensor (59) for detecting a change in planting depth of the seedling is provided. In the rice transplanter that automatically adjusts the planting depth of the attached nail (17),
A scratch sensor (60) for detecting the relative position between the scratch member (35) and the rice field is provided, and the scratch member (35) is detected based on the detection results of the plant depth sensor (59) and the scratch sensor (60). It is configured to be adjusted up and down, and a scraping member (35)
By doing so, it is possible to easily improve the leveling workability for scraping the paddy field and prevent the posture of planting seedlings from being deteriorated due to water flow and mud pushing.

[Brief description of drawings]

FIG. 1 is a side view of a substitute member.

FIG. 2 is a side view of a riding rice transplanter.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the planting part.

FIG. 5 is a plan view of a substitute member.

FIG. 6 is a plan view of a traveling speed change lever portion.

FIG. 7 is a plan view of a lifting lever unit with a plant.

FIG. 8 is a planting control circuit diagram.

FIG. 9 is a flowchart of the previous figure.

FIG. 10 is a side view showing a modified example of FIG.

FIG. 11 is a plan view of the same.

[Explanation of symbols]

 (17) Planting claw (35) Scratch member (41) Scratch cylinder (59) Sprout depth sensor (60) Scratch sensor

Claims (2)

[Claims] 1. A scooping member is provided up and down in front of a seedling planting position of a planting nail, and a planting depth sensor for detecting a change in planting depth of the seedling is provided to automatically adjust the planting depth of the planting nail. The rice transplanter according to claim 1, further comprising a member for automatically adjusting the depth of scratching of the scratching member in conjunction with the operation of adjusting the depth of the planting nail. 2. A scooping member is provided up and down in front of a seedling planting position of the planting claw, and a planting depth sensor for detecting a change in planting depth of the planting claw is provided to automatically adjust the planting depth of the planting claw. In the rice transplanter to be performed in, the provision of a scratch sensor for detecting the relative position of the scratch member and the rice field, and configured to adjust the scratch member up and down based on the detection results of the plant depth sensor and the scratch sensor. A rice transplanter that features.