JP3335959B2 - Riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, an embodiment in which the present invention is applied to a riding type rice transplanter will be described with reference to the drawings. FIG. 1 shows an overall side view of a riding type rice transplanter. This riding type rice transplanter is provided with a riding type traveling machine 1 and a hydraulic lift through a lifting link mechanism 2 at the rear of the traveling type body 1. It is constituted by a seedling planting device 4 that is connected to be able to move up and down by the operation of the cylinder 3. An engine 5 is mounted on a front portion of the traveling body 1, and motive power extracted from the engine 5 is transmitted to a front wheel 8, a rear wheel 9, and a belt-type continuously variable transmission 6 and a transmission case 7. It is transmitted to the seedling planting device 4.

As shown in FIGS. 2 and 3, a belt-type continuously variable transmission 6 includes a pair of split pulleys 10, a transmission belt 11 wound over the pair of split pulleys 10, and a pair of split pulleys 10. A pair of cam mechanisms 12 that reciprocally change the split width interval, and a pair of cam mechanisms 12 via an operation rod 13
, And an electric cylinder 14 that reciprocally operates the motor.

[0003] Each of the pair of split pulleys 10 includes a cylindrical shaft 15 as an example of a transmission shaft, a fixed pulley body 10A fixed to the cylindrical shaft 15 so as to be rotatable integrally therewith, and a cylindrical shaft 15.
It comprises a movable pulley body 10B which is fitted rotatably via a cam type transmission mechanism 16 and slidably in the direction of the axis P of the cylindrical shaft 15. The cylindrical shaft 15 of one split pulley 10 of the pair of split pulleys 10 is
In a state where the movable pulley body 10B is located on the engine 5 side,
The drive pulley 6A in the belt-type continuously variable transmission 6 is configured by being integrally rotatably fitted and connected to the output shaft 5a of the engine 5. Further, the cylindrical shaft 15 of the other split pulley 10 is connected to the input shaft 7a of the transmission case 7 such that the fixed pulley body 10A is located on the transmission case 7 side so as to be integrally rotatable. Driven pulley 6 in continuously variable transmission 6
B is configured. As shown in FIG.
The cam type transmission mechanism 16 is rotatable integrally with the cylindrical shaft 15,
Further, a cylindrical body 16A fitted with a spy line so as not to slide in the direction of the axis P, and a plurality of pressing cam bodies 16 formed to project from the cylindrical body 16A toward the movable pulley body 10B.
B and a plurality of pressed cam bodies 16C protruding from the movable pulley body 10B toward the cylindrical body 16A. The pressing cam body 16B has a pressing inclined surface 1 that presses against the pressed cam body 16C with its rotation.
6a are formed. The pressed cam body 16C has a pressed inclined surface 16b that is in surface contact with the pressed inclined surface 16a. That is, the cylindrical body 1 is rotated with the rotation of the cylindrical shaft 15.
6A is rotated, and the pressing inclined surface 16a and the pressed inclined surface 16b are rotated.
The cylindrical shaft 15 and the movable pulley body 10B rotate integrally when the pressed cam body 16C receives a pressing force around the axis P by the pressing cam body 16B. Also, at this time, a component force is generated between the pressing inclined surface 16a and the pressed inclined surface 16b to press the pressed cam body 16C in the direction of the axis P, and the movable pulley body 10B is fixed by the fixed pulley. It is configured to be urged toward the body 10A.

[0004] As shown in Figs. 2 and 3, each of the pair of cam mechanisms 12 is configured to be of the same shape and to be of a climbing type in order to reduce manufacturing costs. More specifically, each of the cam mechanisms 12 is supported by a support bracket 17 extending from the traveling body 1 to form a cylindrical body 16 </ b> A of the cam-type transmission mechanism 16.
In a state of being pivotally supported via a bearing 18, the fixed cam body 12A fixedly supported and non-rotatably supported and a pressed cam body 16C protruding from a movable pulley body 10B via a bearing 19 are relatively rotatable. And the movable pulley body 10
B and a movable cam body 12B pivotally supported so as to be slidable integrally. On the fixed cam body 12A, a guide cam 12a having a guide cam surface for climbing-up guide inclined toward the movable cam body 12B is formed so as to protrude.
The movable cam body 12B has a guided cam 12b formed with a guided cam surface guided by a guiding cam surface in accordance with the rotation operation thereof, and an operation arm 1 linked to the electric cylinder 14.
2c are formed to protrude. The pair of cam mechanisms 12
Since the pair of split pulleys 10 are mounted on the shafts 5a and 7a in opposite directions, they are opposite to each other. Then, a pair of cam mechanisms 12 that are opposite to each other
The operation arms 12c are interlocked and connected at the same link ratio by the link rod 20, and one of the operation arms 12c and the electric cylinder 14 are interlocked and connected via the operation rod 13. In other words, the pair of cam mechanisms 12 are reciprocally rotated with the expansion and contraction of the electric cylinder 14, and the respective movable pulley bodies 10B of the pair of split pulleys 10 are reciprocally slid with the same operation amount. The pair of split pulleys 10
Can be changed with respect to each of the above.

As shown in FIG. 3, a microcomputer based on a target speed set by a manually operated speed setting device 21 provided in a control section of the traveling body 1 is provided for a telescopic operation amount of the electric cylinder 14. The speed is adjusted by the control operation of the control device 22, so that a stepless speed change operation to the set target speed can be performed.

As shown in FIGS. 2 and 3, each cam mechanism 12 has an elastic bellows body which forms an oil chamber 23 for storing lubricating oil between a fixed cam body 12A and a movable cam body 12B. Reference numeral 24 extends between the fixed cam body 12A and the movable cam body 12B. The movable cam body 12B has a boss 12d formed with a lubrication port h for supplying lubricating oil between the fixed cam body 12A and the movable cam body 12B. Then, by supplying and storing the lubricating oil from the lubrication port h to the oil chamber 23, the fixed cam 1
The operation load at the time of a shift operation that becomes heavy due to a friction load or the like applied between the guide cam surface of 2A and the guided cam surface of the movable cam body 12B can be reduced, and a smooth shift operation can be obtained. I have. Reference numeral 25 shown in FIGS. 2 and 3 is a grease nipple attached to the lubrication port h. Reference numeral 10a shown in FIG. 2 is formed on the movable pulley body 10B so that the lubricating oil stored in the oil chamber 23 flows into the oil chamber 26 formed between the cylindrical shaft 15 and the movable pulley body 10B. It is an oilway.

[0007] As shown in FIG.
A load measuring device 27 for measuring an operation load applied to the operation rod 13 at the time of a shift operation is provided. Load measuring device 2
The operation load (measurement value Xa) measured by 7 is input to the control device 22. The control device 22
The measured value Xa input from the load measuring device 27 is compared with a preset set value Xo. When the measured value Xa from the load measuring device 27 becomes equal to or more than the set value Xo, the lubricating oil in the oil chamber 23 runs short. Is determined, and the operation of the alarm 28 as the lubricating operating device A provided in the control unit is started to urge the worker to supply the lubricating oil to the oil chamber 23. . This allows the operator to easily recognize the appropriate timing for lubricating the oil chamber 23 of the cam mechanism 12. At this time, by performing lubrication on the oil chamber 23, the operator can perform the gear shifting operation. It is possible to eliminate a decrease in durability due to slackening or wear.

As shown in FIG. 1 and FIG.
On both left and right sides, a drawing marker 2 configured to be freely switchable between a working posture protruding outward to draw a running index line in a field scene and a storage posture standing up and retreating on the seedling planting device 4 side.
9 are provided. As shown in FIGS. 5 and 6, the distal end of the drawing marker 29 can be freely extended and contracted between a stored state positioned inside the drawing marker 29 and an operation state extended outward from the drawing marker 29. The auxiliary marker 29a thus configured is provided, and by setting the auxiliary marker 29a to the operating state with the drawing marker 29 switched to the operating posture, the planting width for one process can be secured. In other words, when headland planting or the like is performed, the tip of the auxiliary marker 29a is moved along the ridge while the drawing marker 29 is switched to the operation posture and the auxiliary marker 29a is switched to the operation state. The seedlings can be easily planted in a state where a planting width for one process is secured between the ridge and the rice transplanter.

[Another Embodiment] Another embodiment of the present invention will be described below. The belt-type continuously variable transmission 6 includes a drive pulley 6A
One of the driven pulley 6B and the driven pulley 6B may be configured by a split pulley 10 in which the winding ratio of the transmission belt 11 is changed by the action of the cam mechanism 12. As the load measuring device 27, a pressure sensor, a strain gauge, or the like can be employed. As the alarm device 28, an alarm buzzer, a warning light, or the like can be employed. As shown in FIG. 7, when the measured value Xa from the load measuring device 27 becomes a predetermined value Xo or more instead of the alarm device 28 as the lubricating operating device A, the lubricating oil is supplied to the oil chamber 23 of the cam mechanism 12. May be constituted by a pump 30 for automatically feeding pressure.

[0010] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a cross-sectional plan view of a belt-type continuously variable transmission.

FIG. 3 is a diagram showing a control configuration of a lubrication operation in a belt-type continuously variable transmission.

FIG. 4 is a perspective view showing a configuration of a cam type transmission mechanism.

FIG. 5 is a schematic plan view of the riding type rice transplanter showing an operation state of an auxiliary marker.

FIG. 6 is a front view of a tip portion of a drawing marker showing a storage state and an operation state of an auxiliary marker.

FIG. 7 is a diagram showing a control configuration of a lubrication operation in a belt-type continuously variable transmission according to another embodiment.

[Explanation of symbols]

 29 Drawing marker 29a Auxiliary marker

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01B 69/02 A01C 11/02 330

Claims (3)

(57) [Claims] [Claim 1] A drawing marker (29) to draw the travel indicator line in the field plane, and an auxiliary marker tip can be obtained planting width between the ridge by traveling along the ridge (29a) The auxiliary marker (20) is provided with the drawing marker (29).
Draw the tip along the ridge outside of the drawing action position
Position higher than the working position, and draw a marker (2
Riding rice transplanter attached to 9) . 2. The riding position according to claim 1, wherein the drawing marker (29) is configured to be freely switchable between an operating position for projecting outward and drawing a running index line in a field scene and an upright storage position. Type rice transplanter. 3. The passenger according to claim 1, wherein the auxiliary marker (29a) is configured to be extendable and contractible between an operation state extended outward from the drawing marker (29) and a retracted storage state. Type rice transplanter.