JP2784916B2 - Riding rice transplanter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a long seedling mounting table on which two or more mat seedlings can be placed, and reduces the number of times of seedling replenishment. The present invention relates to a riding rice transplanter having a higher continuous planting operation efficiency. 2. Description of the Related Art Conventionally, in a riding rice transplanter, for example,
The ones described in JP-A-8-121711 and JP-B-55-18482 are known. [0003] In recent years, with the spread of field maintenance, many fields having a side length of 100 m tend to appear.
In the riding rice transplanter described in Japanese Patent Publication No. 11, the length of the seedling mounting table is also limited, and the length is set to a length (about 960 mm) on which about one and a half mat seedlings (about 600 mm in length) are placed. With one cup, two mat seedlings could not be placed at the start of the planting operation. Therefore, in the above-mentioned 100-meter field, etc., it is difficult to continuously plant 200 meters of reciprocating water, so that the number of times of replenishing seedlings other than the headland increases, and the aircraft is frequently stopped for replenishing seedlings during the planting operation. Not only was the work efficiency inferior, but also the work efficiency was inferior, and the labor required to transfer the mat seedlings from the replenishment seedling stand to the seedling stand was not stupid, and the seedlings could be damaged in some cases when transferring the seedlings. . [0004] For this reason, a riding rice transplanter having a long seedling mounting table as described in the above-mentioned Japanese Patent Publication No. 55-18482 has been proposed. However, a parallel link mechanism for vertically supporting the planting portion is proposed. However, due to the uneven distribution on the rear half side of the rear wheel, the planting section protrudes rearward of the traveling aircraft and the overall length of the aircraft increases, resulting in poor circulation performance on headlands in the field. Was. [0005] In order to solve the above problems, the present invention comprises a front wheel supported by a front transmission case and a rear wheel supported by a rear rear gear case. An outer diameter of the rear wheel is configured to be larger than an outer diameter of the front wheel, and a planting section having a planting rod and a seedling mounting table and the like at the rear of the traveling body, a link mechanism including a lower link and an upper link. In a riding rice transplanter that is mounted so as to be able to move up and down freely, the planting unit includes a long seedling mounting table on which two or more mat seedlings can be mounted,
The pivot point of the traveling body side of the link mechanism, the rear wheel axis vertical
In a range that is forward from the line and behind the perpendicular to the front end edge of the rear wheel outer diameter, the support member is provided upright at a portion near the rear of the driver's seat, and the upper link is in the planted portion descending posture. The upper rear part of the rear wheel is arranged at a predetermined height so as to obliquely cross the front and rear heights, while the tip of the upper end side of the seedling mounting table is placed on the rear part in a planting part descending posture. It is characterized in that it is set so as to be located above the rear wheel axle perpendicular line and between the support members of the link mechanism. According to the present invention, since the above structure is adopted, the vertical size (longitudinal direction) of the seedling mounting table is set longer than that of the conventional one, so that the number of mat seedlings mounted per strip is increased. As a result, continuous seedling planting operation with a long distance equivalent to one mat seedling can be performed. That is, at the start of the planting operation, first, two mat seedlings are placed on one per seedling mounting table, and the operation is started. Then, when it is time to replenish the seedlings, two mat seedlings are replenished following the remaining remaining seedlings that are running low and two or more mat seedlings are placed on each seedling mounting stand. And resume work. Therefore, 100
Even in a meter field or the like, continuous planting work with a reciprocation of 200 meters becomes possible, and work efficiency can be improved. Nevertheless, it is possible to make the overall length of the body as short as possible, so that field travel is stabilized and circling can be performed smoothly. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a traveling body of a riding rice transplanter having a pair of left and right front wheels 2 and a rear wheel 3. The outer diameter of the rear wheel 3 is larger than the outer diameter of the front wheel 2. Behind the traveling body 1, a planting section A having a planting rod 4 and a seedling table 5 and the like erected so as to be able to reciprocate left and right in a front and rear height ,
A lower link 6 disposed from a portion of the outer diameter of the rear wheel 3 rearward on a perpendicular to the front edge to a portion rearward from a perpendicular of the rear edge.
a and the upper link 6b is mounted so as to be movable up and down via a parallel link mechanism 6. The pivot point of the parallel link mechanism 6 on the traveling body side is set to the axle 3a of the large-diameter rear wheel 3.
Forward from the perpendicular and behind the front edge perpendicular to the outer diameter of the rear wheel 3
And the upper link 6b is placed in the lowering position of the planting portion, and the upper half of the rear wheel is inclined obliquely in a front-to-back and low-down position. It is arranged at a predetermined height so as to cross. [0008] The driver's seat 7 is located between the front wheel 2 and the rear wheel 3.
In addition, the driver's seat 7 is disposed so as to be deviated near the front end perpendicular to the rear wheel outer diameter, so that the driver's seat 7 can be brought as close as possible to the inclined upper end side of the seedling mounting table 5. The operation of supplying seedlings to the seedling mounting table 5 can be easily performed.
Further, the space portion a is formed above the rear wheel 3 by the arrangement of the driver's seat 7, from the rear wheel shaft 3a above the rear wheel 3 the inclined upper portion of the seedling mounting table 5 by utilizing this space a Also one
It is a long-type seedling mounting table that protrudes forward by a distance. That is, the upper end tip portion of the seedling mounting table 5, as shown in FIG. 1, the rear wheel shaft 3a above the rear wheel 3 in planting work posture
The seedling mounting table 5 is set so as to be located between the vicinity of the vertical line and the support member 1A of the link mechanism 6 erected in the vicinity of the rear part of the driver's seat 7. It is formed in a long shape toward the rear part. As a result, a length capable of mounting about two and a half mat seedlings per line (S = about 1600)
Millimeters), so 2
This enables continuous planting work of more than 00 meters. Reference numeral 8 denotes an engine, 9 denotes a steering unit, 10
Is a front transmission case including a traveling transmission group and a steering gear group, and most of the transmission case 10 is located at a position eccentrically forward of a line perpendicular to the front wheel shaft 2a. After the power of the engine 8 is transmitted to the transmission case 10 via the transmission belt 11, the traveling system drives the rear wheel 3 via the rear wheel drive shaft shaft 12 and the rear rear wheel gear case 13, and unillustrated. The front wheel 2 is also driven via a transmission mechanism (four-wheel drive type), while the power system of the planting part A is driven by the planting part drive shaft 14 and then through the universal joint shaft 15 to the drive case 1.
6 to drive the planting parts such as the planting rod 4 and the seedling mounting table 5. As described above, a space portion is formed between the front wheel 2 and the rear wheel 3 without disposing a transmission case or the like, and the rear wheel drive shaft shaft 12, the planting portion drive shaft 14, and the seedling mounting table are formed in the space portion. A hydraulic cylinder device 17 for elevating and lowering is arranged. By the way, the engine 8 and the heavy parts such as the transmission case 10 and the steering unit 9 in which the steering gear group is incorporated in the transmission case 10 are mounted on the front wheel shaft 2.
Since the transmission case 10 is disposed in the overhang portion L of the fuselage provided in front of the front wheel shaft 2a, and in particular, most of the transmission case 10 is configured to be located eccentrically forward of the perpendicular to the front wheel shaft 2a, the overhang portion L is the weight W1 of the engine 8 and the weight W2 of the transmission case 10, so that a considerable balance is achieved. Further, the above-described arrangement of the engine 8, the transmission case 10, and the steering unit 9 makes it unnecessary to dispose the transmission case 10 and the like between the front wheel 2 and the rear wheel 3, so that the wheel base (wheel distance) is set shorter. (See FIGS. 1 and 2)
Reference), a long type seedling mounting table 5 capable of mounting two or more mat seedlings up to about two and a half can be turned easily and easily maneuvered. The planting portion A provided with the long type seedling mounting table 5 extends from a portion behind the front edge perpendicular of the outer diameter of the rear wheel 3 to a portion behind the rear edge perpendicular. Mechanism 6 composed of lower link 6a and upper link 6b
And the pivot point of the link mechanism 6 on the traveling body 1 side is located forward of a line perpendicular to the rear wheel shaft 3a and perpendicular to a front edge of the outer diameter of the rear wheel 3. A support member 1 erected at a position near the rear of the driver's seat 7 in a range further behind.
A, and the upper link 6b is arranged at a predetermined height so as to obliquely traverse the upper half of the rear wheel 3 obliquely forward and rearward in the planted portion descending posture, Even though the link mechanism 6 is relatively long, the planting portion A
Can be arranged closer to the rear wheel 3 side, the length of the entire body can be reduced as much as possible, and the center of gravity of the planting portion A can be as close to the body side as possible. The lift of the link mechanism 6 can be reduced. In addition, since the link mechanism 6 can be made relatively long, the amount of elevation of the planting portion A can be increased, and the planting portion A can be raised significantly at the time of turning. In addition, the change in the forward and backward movement of the planting section A due to the raising and lowering operation can be reduced, and the tip of the seedling mounting table 5 can be moved as far as possible without the tip of the seedling mounting table 5 contacting the operator when the planting section A is raised. It can be arranged close to the driver's seat 7. The operator sits in the driver's seat 7 and travels with four-wheel drive of the front wheel 2 and the rear wheel 3 while operating the steering wheel 9a of the steering unit 9 to perform a planting operation. At the start of the operation, two mat seedlings are mounted on one row of the seedling mounting table 5 to start the operation. In the case of five-row planting as shown in the figure, the load on the front wheel 2 is approximately 40% and the weight of the rear wheel 3 is about 40% when two mat seedlings are mounted on one row of the seedling mounting table 5 in the case of the five-row planting as shown in the figure. The load is 60%, and the load ratio of the front and rear wheels is 50:50 when the seedling mounting table 5 is empty. Therefore, in the case of the conventional machine, even when one mat seedling is mounted, the balance ratio between the front wheel and the rear wheel is approximately 35:65. The front-rear balance of the fuselage is extremely good in spite of the configuration in which two or more extra mounts can be placed, and the four-wheel drive function can be sufficiently exhibited. In addition, the rear wheel 3 is used as a reference for lifting (head-up) at the front of the body at the time of circulating on a headland in a field, etc. In the present invention, the engine 8 and the transmission case 10 are used.
And the driver's seat 7 is disposed at a position further away from the rear wheel 3 as compared with the conventional machine, and the engine weight W
1. Mission case weight W2 and operator weight W
3 is effectively added, and particularly, by adopting a configuration in which most of the transmission case 10 is eccentrically located forward of the perpendicular to the front wheel axle 2a, the addition is more effective, and the lift during circling is minimized. In other words, circulation in the field can be performed smoothly. Further, the seedling mounting table 5 is located above the rear wheel 3 in the space a.
It is curved so as to cover the seedlings, so that even if the seedling mounting 5 is configured to be long, there is no waste in space, and the number of mat seedlings to be mounted on the seedling mounting 5 is two or more and a maximum of about two and a half. Before starting the planting work, the seedling table 1
Work can be started by placing two mat seedlings per strip. [0014] Then, when the timing of replenishing the seedlings comes, two mat seedlings are replenished following the remaining remaining seedlings, and two or more mat seedlings are loaded on each seedling mounting stand. And resume work. Therefore,
Continuous planting work of 200 m or more is possible, and reciprocal continuous planting work can be performed in the above-mentioned 100 m field. It is sufficient to supply seedlings to the seedling table 5 only on one side of the headland. Since the number of times can be reduced as much as possible, the efficiency of planting work and labor saving can be achieved,
Damage to the seedlings during seedling replenishment can be reduced accordingly. As described above, according to the present invention, it is possible to increase the number of seedlings mounted per line to two or more by setting the seedling mounting table longer than in the conventional one, and It improves planting work efficiency. In addition, the pivot point on the traveling body side of the link mechanism that supports the planting portion in the driver's seat is located forward of the rear wheel axle perpendicular and rearward of the front end perpendicular to the rear wheel outer diameter. By arranging it on a support member that stands upright in the vicinity of the rear part, the link mechanism can be configured to be relatively long so as to traverse the rear wheel in a state where the distance between the front wheel and the rear wheel is shortened. So that the tip of the upper end side of the seedling mounting table is located between the support members of the link mechanism from near the vertical axis of the rear wheel axis above the rear wheel in the planting portion lowering posture. By setting, the tip of the seedling table can be placed as close to the driver's seat as possible,
The center of gravity of the planting section is made as close as possible to the fuselage side to reduce the lift of the link mechanism, and to facilitate the work of supplying seedlings from the driver's seat to the seedling mounting table. Also, despite having a long seedling mounting table, the entire length of the fuselage can be shortened, and the longitudinal balance of the fuselage is good.

[Brief description of the drawings] FIG. 1 is an overall side view of a riding rice transplanter. FIG. 2 is a plan view of the riding rice transplanter. [Explanation of symbols] 1 traveling aircraft 2 front wheels 3 Rear wheel 4 Planting rod 5 Seedling platform 6 Link mechanism 7 Driver's seat A planting department

Claims (1)

(57) [Claims] It has a front wheel supported by a front transmission case and a rear wheel supported by a rear rear wheel gear case, and has an outer diameter of the rear wheel larger than an outer diameter of the front wheel. Is a riding rice transplanter having a planting section having a planting rod and a seedling mounting table, etc., which can be raised and lowered via a link mechanism consisting of a lower link and an upper link, wherein the planting section has two mat seedlings. A long seedling mounting table capable of being mounted thereon is provided, and the pivot point of the link mechanism on the traveling body side is located forward of a perpendicular to a rear wheel axle and perpendicular to a front end edge of a rear wheel outer diameter. The rear link is placed on the support member that stands upright in the vicinity of the rear of the driver's seat within the rear area, and the upper link obliquely crosses the upper half of the rear wheel with the planting part descending in a front-to-back and low-low position. While being arranged at a predetermined height so as to be in a form, the upper end side tip of the seedling mounting table is placed in a planting portion descending posture. Riding rice transplanter, wherein from the vicinity on the rear wheel axis perpendicular above the wheel that has been set so as to be positioned between the support member of the link mechanism.