JP3284369B2 - Riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter having a seedling table, a planting claw, and the like for continuously performing seedling planting operations.

[0002]

SUMMARY OF THE INVENTION Conventionally, JP-A-61-2
02612 or JP-A-60-130305
As shown in the report , the planting section is mounted on the traveling vehicle via the top link and the lower link so as to be able to move up and down freely and freely, and a rolling sensor and a rolling cylinder for automatically correcting the lateral inclination of the planting section are provided. There is a technique of disposing a rolling control component including the sensor and the cylinder on the side of the planting portion supported via the rolling fulcrum shaft, but the top link and the lower link are connected to one side of the rolling fulcrum shaft. Since the rolling cylinder is erected between the supporting frame and the planting part side, the rolling cylinder mounting side of the planting part becomes heavier than the opposite side, and there is a problem that the weight balance in the left and right direction of the planting part becomes poor. When performing control, the lowering speed of the rolling cylinder mounting side is likely to be faster than the rising speed, Etc. are required valve or adjustment to equalize, there is a problem such that not aim to facilitate and improve the reliability of improving workability and rolling control and assembly maintenance.

[0003]

According to the present invention, a planting part is mounted on a traveling vehicle via a top link and a lower link so as to be able to move up and down and freely roll, and the inclination of the planting part is automatically adjusted to the right and left. the rolling sensor and the rolling cylinder corrects provided, on the planting side which supported via a rolling pivot axis, the rolling sensor and Lori
In a riding rice transplanter in which a rolling cylinder, a rolling valve and a hydraulic pump are disposed, at a position above a lower hitch pin of a support frame connecting the lower link,
A lower position than the hitch pin on a supporting frame which connects the top link, to place the said rolling cylinder toward the axial center in the horizontal direction of the machine body, the rolling cylinder
The two ends of the piston rod have a U-shaped support frame
In shall abut on both sides the inner surface of the arm, for example, compared to the above the top link to the conventional structure in which the rolling cylinders during the planting unit lift, between the top link and rolling cylinder, that sandwich and wires and wiring And a heavy cylinder can be provided at a low position to lower the center of gravity, stabilize the posture of the planted part, and for example, compared to the conventional structure in which a rolling cylinder is provided between the planted part and the side of the support frame. , A rolling cylinder can be provided in the approximate center of the lateral width of the planting part to maintain a good balance of weight in the lateral direction. The rolling control structure can be simplified and the rolling control performance can be easily improved, so that workability such as assembly maintenance can be improved, and rolling control reliability can be improved. It is intended to obtain aim ease.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a side view of a rolling fulcrum shaft portion, FIG. 2 is a side view of the whole, FIG. 3 is a plan view of the same, and FIG. 4 is a side view of a planting portion. A vehicle body, on which an engine (2) is mounted; a rear end of a body frame (3) connected to a transmission case (4); and front of the transmission case (4) via axle case (5). In addition to supporting the transmission case (6), a transmission case (7) is continuously provided on both sides of a rear portion of the transmission case (4), and a rear paddle (8) for paddy field traveling is supported at a rear end of the transmission case (7). A spare seedling mount (10) is attached to both sides of the hood (9) covering the engine (2) and the like, and the transmission case (4) and the like are covered with a vehicle body cover (12) forming a step (11). A driver's seat (13) is mounted above the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9).

[0005] In the figure, reference numeral (15) denotes a planting section provided with a seedling mounting table (16) for planting six rows and a plurality of planting claws (17). The mounting table (16) is supported on the planting case (20) via the seedling stand rail (18) and the guide rail (19) so as to be reciprocally slidable left and right.
A rotary case (21) that rotates at a constant speed in one direction is supported by the planting case (20), and a pair of claw cases (22), which are a pair of planting arms, are symmetrically positioned around the rotation axis of the case (21). ) (22), and the claw case (22)
Attach the planting claws (17) and (17) to the tip. FIG.
As shown in the figure, 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 (3) including a top link (25) and a lower link (26) is provided. 27), a supporting frame (24) is connected to the rear side of the traveling vehicle (1), and an elevating cylinder (28) for raising and lowering the planting section (15) via the link mechanism (27) is connected to a lower link (26). ) To drive and move the front and rear wheels (6) and (8).
A seedling for one plant is taken out from a seedling mounting table (16) that is reciprocally slid left and right by a planting claw (17), and the seedling planting operation is continuously performed.

[0006] In the figure, (29) is a traveling speed change lever,
(30) is a planting elevating lever, (31) is a traveling main clutch pedal, (32) and (32) are left and right brake pedals, (3)
3) is a two-floor leveling center float which is a sensor float, and (34) is a two-floor leveling side float.

Further, as shown in FIGS. 1, 5 to 9,
A pendulum-type rolling sensor (35) for automatically correcting the left-right inclination of the planting portion (15) and a hydraulic rolling cylinder (36) serving as a rolling control actuator, and the cylinder (36) is rotated by the swing of the sensor (35). The rolling valve (37) to be operated and the cylinder (3)
6) a rolling hydraulic pump (38) for driving the bearing cylinder (3) below the support frame (24).
9) Rolling fulcrum shaft (2) in front of planting case (20)
3) is rotatably supported, a hydraulic pump (38) is fixedly mounted on the left side of the planting case (20), and transmission for transmitting the driving force of the engine (2) via the transmission case (4). The input shaft (41) of the planting case (20) is connected to the shaft (40), the hydraulic pump (38) is driven by the input shaft (41), and the inside of the planting case (20) which also serves as an oil tank. The hydraulic oil is supplied to the valve (37) and the cylinder (36) from the pump (38).

A mounting stand (42) is erected and fixed on the front upper side of the planting case (20), and a rolling cylinder (36) is fixedly mounted on the mounting stand (42). The two end faces of the piston rod (43) are brought into contact with the inner faces on both sides of the support frame (24) having a U-shape in plan view, and the rod (43) reciprocally slides so as to center on the rolling fulcrum shaft (23). And a rolling valve (37) is integrally fixed to the cylinder (36), and a sensor shaft (45) is rotatably supported by the valve (37) via a bracket (44). (4
5) While fixing the base end of the rolling sensor (35) to one end, the fork arm (46) at the other end of the sensor shaft (45) is engaged and connected to the spool (47) of the rolling valve (37). ), The spool (47) is slid and the rolling valve (37) is switched to control the operation of the rolling cylinder (36). All rolling control components including the sensor (35), the rolling cylinder (36), the rolling valve (37), and the hydraulic pump (38) are arranged in the planting case (20) which is a planting part (15). Let me.

Further, at a position above the lower hitch pin (48) of the support frame (24) connecting the lower link (26) and the rolling fulcrum shaft (23) and at a position forward of the seedling mounting table (16), Support frame (2
The rolling cylinder (36) is disposed below the upper hitch pin (49) of the support frame (24) connecting the top link (25) at a position overlapping with 4). As compared with the structure in which the rolling cylinder (36) is provided above, the top link (25) and the rolling cylinder (3)
6) A heavy cylinder (36) is provided at a low position without lowering the center of gravity without holding the operator's hand or a wire or a wire between them, thereby stabilizing the posture of the planting portion (15).
In addition, the rolling cylinder (3) can be made compact by effectively utilizing the space unnecessary on the rear side of the support frame (24).
6) and so on.

As is apparent from the above description, the planting portion (15) is mounted on the traveling vehicle (1) via the top link (25) and the lower link (26) so as to be able to freely move up and down and roll freely. part automatically rolling sensor to correct (35) and rolling cylinder (36) the lateral inclination (15) is provided, the planting unit for supporting through a rolling pivot shaft (23) (15) side, the rolling sensor (35) and rolling cylinder (36) and Rollin
A top link (25) at a position above the lower hitch pin (48) of the support frame (24) connecting the lower link (26) in the riding rice transplanter on which the valve (37) and the hydraulic pump (38) are disposed. the position below hitch pin (49) on a supporting frame to be coupled (24), wherein is disposed a rolling cylinder (36) toward the axial center in the horizontal direction of the machine body, the rolling cylinder
(36) Both ends of the piston rod (43) are
Shaped support frame Ru abut on both sides the inner surface (24).
When the planting section (15) is moved up and down, for example, a wire and a wiring are provided between the top link (25) and the rolling cylinder (36) as compared with the conventional structure in which the rolling cylinder (36) is provided above the top link (25). A heavy cylinder (36) is provided at a low position to lower the center of gravity so as to stabilize the posture of the planting portion (15). For example, the planting portion is placed on the side of the support frame (24). (1
5) Compared to the conventional structure in which a rolling cylinder (36) is provided between the planting portion (15) and the rolling cylinder (36) is provided substantially at the center of the lateral width of the planting portion (15) to maintain a good left-right weight balance. Eliminates the problem that the difference between the left and right tilting speeds due to the left and right weight difference during rolling control
Eliminates the need for valves or adjustments to equalize the left and right tilting speeds, simplifies the rolling control structure and easily improves rolling control performance, etc., improves workability such as assembly maintenance, and improves the reliability of rolling control. In addition, the rolling cylinder can be mounted compactly by effectively utilizing the space on the rear side of the support frame.

The rolling sensor (35), rolling cylinder (36), rolling valve (37)
Are integrated and arranged at substantially the same mounting position, and the connection between the sensor (35) and the valve (37) and the cylinder (3)
6) Direct connection between the valve (37) and the remote connection member such as hydraulic piping is not required, the mounting structure can be made compact, the control accuracy can be improved by preventing the response delay of the cylinder (36), and the like. The outer periphery of the sensor (35) and the valve (37) are covered with the same removable mudproof cover (50), and the cover (50) prevents mud from adhering to the sensor (35) and the spool (47). It is configured as follows.

[0012]

As is clear from the above embodiments, the present invention provides a top link (2
5) and planting section (15) via lower link (26)
A rolling sensor (35) for mounting the vehicle on the traveling vehicle (1) and automatically correcting the lateral inclination of the planting section (15)
And a rolling cylinder (36), and on the side of the planting portion (15) supported via the rolling fulcrum shaft (23),
The rolling sensor (35) and rolling cylinder (36) and rolling the valve (37) and hydraulic pump
In the rice transplanter in which the lower link (26) is connected, the supporting frame (24) connecting the top link (25) is located above the lower hitch pin (48) of the supporting frame (24) connecting the lower link (26). a lower position than the hitch pin (49) on the), the is arranged a rolling cylinder (36) toward the axial center in the horizontal direction of the machine body, before
The piston rod (4) of the rolling cylinder (36)
3) Both ends of the support frame (24) having a U-shape in plan view
In shall abut on either side inner surface, for example, the top link (2
5) Compared to the conventional structure in which the rolling cylinder (36) is provided above, when the planting portion (15) moves up and down, a wire and a wiring can be sandwiched between the top link (25) and the rolling cylinder (36). And heavy cylinder (3
6) can be provided at a low position to lower the center of gravity, stabilize the posture of the planting portion (15) and, for example, between the planting portion (15) and the side of the support frame (24). As compared with the conventional structure in which a rolling cylinder (36) is provided, a rolling cylinder (36) is provided at substantially the center of the left and right width of the planting portion (15) so that a good left-right weight balance can be maintained. It is possible to eliminate the problem that the difference between the left and right tilting speeds due to the weight difference is eliminated, simplify the rolling control structure and easily improve the rolling control performance, etc., and improve the workability such as assembly maintenance and the rolling control. The reliability can be easily improved.

[Brief description of the drawings]

FIG. 1 is a side view of a rolling fulcrum shaft part.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

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

FIG. 5 is a rolling control hydraulic circuit diagram.

FIG. 6 is an explanatory diagram of a hydraulic pump unit.

FIG. 7 is a rear view of the support frame unit.

FIG. 8 is a rear view of the rolling cylinder unit.

FIG. 9 is a plan view of the same.

[Explanation of symbols]

(1) Traveling vehicle (15) Planting part (16) Seedling stand (23) Rolling fulcrum shaft (24) Support frame (25) Top link (26) Lower link (35) Rolling sensor (36) Rolling cylinder (37 ) ) Rolling valve (38) Hydraulic pump (43) Piston rod (48) Lower hitch pin (49) Upper hitch pin

Claims (1)

(57) [Claims] 1. A planting part (15) is mounted on a traveling vehicle (1) via a top link (25) and a lower link (26) so as to be able to move up and down and freely roll. A rolling sensor (35) and a rolling cylinder (36) for automatically correcting the lateral inclination are provided, and the planting section (1) supported via a rolling fulcrum shaft (23) is provided.
5) On the side, the rolling sensor (35) and the rollin
Grayed cylinder (36) and rolling the valve (37) and
In a riding rice transplanter in which a hydraulic pump (38) is provided,
A support frame (24) connecting the top link (25) above the lower hitch pin (48) of the support frame (24) connecting the lower link (26).
The rolling cylinder (36) is disposed below the upper hitch pin (49) with the axis thereof oriented in the lateral direction of the body, and the piston cylinder of the rolling cylinder (36)
(43) Support frame in which both end faces have a U-shape in plan view
Riding rice transplanter, wherein Rukoto abut on both sides the inner surface (24).