JPS632562B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

TECHNICAL FIELD The present invention relates to a riding-type rice transplanter, and more particularly, to an improvement of a passenger vehicle body on which a rice-transplanting machine is mounted so as to be movable up and down.

[Conventional technology]

2. Description of the Related Art As a riding type rice transplanter, one in which a rice transplanter is attached to the rear part of a passenger vehicle body via a link mechanism so as to be movable up and down is known.

[Problems to be solved by the invention]

In such a riding rice transplanter, the passenger body and the rice transplanting machine are usually well balanced.
In addition, it is desired that the overall length of the machine is short, and that the driver's seat is located close to the rice transplanting machine, making it easier to replenish the spare seedlings loaded on the passenger side to the seedling platform of the rice transplanting machine. However, conventional riding rice transplanters have not been able to fully satisfy these demands.

[Means for Solving the Problems] The present invention has been made to satisfy the above-mentioned demands, and includes a motor 8 provided at the front end of the passenger vehicle body 1, and a transmission case 4 for traveling on the rear side. A cover tube 14a is provided on both left and right sides of the transmission case 4, and the base side is attached to this cover tube 14a, and the rear wheel 6 is attached to the rear end side.
A transmission case 14 is provided which extends to a diameter approximately equal to or larger than the diameter of the transmission case 14.
A rear running wheel 6 is attached to the rear end side, and a pair of left and right transmission cases 14 in plan view are configured in a gate shape through a cover tube 14a and a transmission case 4. Transmission case 14,1
An extension frame 13 is provided which extends into the gate-shaped space between the two transmission cases 14 in plan view, and this frame 13 supports the driver's seat 12 which is substantially disposed above the left and right transmission cases 14, 14. , and in which the base side of the lifting link mechanism 2 that connects the rice transplanting work machine 3 is connected to the frame 13 side.

[Effect]

With such a configuration, the present invention has a good weight balance between the passenger vehicle body 1 and the rice transplanting work machine 3, allowing stable work to be performed, and shortening the overall length of the machine, resulting in good operability, and making it possible to move the headland. Furthermore, it is possible to easily and reliably supply seedlings from the driver's seat 12 to the seedling platform 25 of the rice transplanting work machine 3.

【Example】

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a passenger vehicle body, and a rice transplanting machine 3 is connected to the rear portion of the passenger vehicle body 1 via a link mechanism 2. As shown in FIG. The passenger vehicle body 1 has a single front wheel 5 at the front center of a transmission case 4 that also serves as a frame, and a pair of left and right rear wheels 6 at the rear. An engine 8 is mounted on this, a driver's seat 9 is provided behind it, and is equipped with a handle 10 and various operating levers 11, and a seat 12 is provided on an extension frame 13. rear wheel 6
A cover tube 14a housing a drive shaft (not shown) protrudes from both rear sides of the transmission case 4, and a rear wheel mounted on the rear end side is inserted diagonally downward from the end of the cover tube 14a. The rear wheel 6
The left and right transmission cases 14 to which the transmission cases 14 are attached are configured in a gate shape relative to the transmission case 4, and a space is formed between the left and right rear wheels 6. The extension frame 13 extends from the mission case 4 side into the gate-shaped space. After the power from the engine 8 is input to the transmission mechanism in the transmission case 4 via the belt transmission means 15, it is transmitted to the rear wheel 6 via the cover tube 14a and the transmission case 14, and then to the propeller shaft. It is designed to be transmitted to the rice transplanting machine 3 via. The link mechanism 2 has an upper leaf spring link 17 and a lower link 18 installed in parallel between an extension frame 13 at the rear of the passenger vehicle body 1 and a rolling box 16 on the side of the rice transplanting machine 3 so as to support at three points. A spring 19 is attached diagonally between the rolling box side of the lower link 18 and the upper part of the frame 13, and supports the rice transplanting machine 3 together with these upper and lower links 17 and 18. Inside the extension frame 13, a lift arm 20 is installed substantially vertically with its upper portion pivoted by a pin 21.
The leaf spring link 17 is mounted on the upper end of the lift arm 20, and a piston 23 of a hydraulic cylinder 22 is brought into contact with the lower part of the lift arm 20 to swing the lift arm 20. In addition, the rice transplanting work machine 3 has a body frame 24 connected to a long box 16 connected to the rear end of the link mechanism 2 in a rolling manner, and a seedling platform 25 is mounted on the body frame 24 with its upper end supported. It is installed so as to be inclined toward the passenger vehicle body 1 side and reciprocate in the left-right direction, and a planting mechanism 26 is disposed opposite to the seedling take-out port at the lower end thereof. In addition, a float 2 is installed under the fuselage frame 24.
7 is disposed so that its front end faces into the space formed between the left and right rear wheels 6, and its rear end faces a position below the planting mechanism 26. As shown in FIG. 2, the floats 27 are elongated planar plates located within the width of the gate-shaped transmission case 14 and arranged in two rows in the front-rear direction. The front end portion 27a is formed into a substantially semicircular shape, and the rear end portion is formed with a smaller width to form a tail 27b, and the planting rods 26a of the planting mechanism 26 are arranged facing both sides of the tail 27b.
By the vertical swinging movement of the planting rod 26a, the seedlings on the seedling stand 25 are cut out one by one and planted on the rice field. The transmission case 4 is integrally molded with the gear box 28 of the steering device having the handle 10, and is disposed immediately behind the handle 10 and in front of the seat 12, and diagonally rearward from the position of the transmission case 4. The transmission case 14 extending downward extends relatively long and pivotally supports the left and right rear wheels 6 behind the seat 12 position. As a result, a relatively wide space is formed below the seat 12, extending from the transmission case 4 position to the rear rear wheel 6 position and partitioned by the gate-shaped transmission case 14. According to the present invention, the front end portion 27a of the float 27 is located forward of the axle 6a position of the left and right rear wheels 6 and rearward of the transmission case 14 projecting from the transmission case 4 in the left-right direction. The float 27 extends facing into the space formed below the seat 12, so that the float 27 receives a buoyant force that can support the load of the passenger vehicle body 1 and the rice transplanting machine 3 connected thereto to a certain extent. It's getting old. In the riding-type rice transplanter configured as described above, the floats 27, 27 extend over an area from the portion in front of the axle 6a position of the left and right rear wheels 6 of the passenger vehicle body 1 to the rear end of the rice transplanter 3. Since it is extended, the floats 27, 27 are
The vehicle slides on the rice field while supporting the load of the passenger vehicle body 1 on the left and right rear wheels 6, 6 to a certain extent. Therefore,
Even if the tiller has some ups and downs, the rear wheels 6 do not move up and down extremely with respect to the front wheels 5, and the riding-type rice transplanter as a whole does not tilt forward or backward significantly. As a result, the rice transplanting machine 3 naturally follows the rice field based on the topsoil. In addition, when traveling on the road, etc., when driving with the rear rice transplanting machine 3 of the passenger vehicle body 1 lifted,
The transmission case 1 has a diameter that is approximately the same as the diameter of the rear wheel 6, which has a large diameter so that sufficient driving force can be obtained in the rice fields.
Although it is a riding rice transplanter with a rice transplanter 3 attached to a passenger vehicle body 1 that can extend the space between the front wheels 5 and rear wheels 6 for stable running, the overall length of the machine is short and it is relatively heavy. Since the heavy engine 8 and the transmission section are disposed forward of the seat 12 and closer to the front wheels 5, the front-rear balance of the loads applied to the front wheels 5 and rear wheels 6 is improved, allowing stable running. Furthermore, when the number of seedlings on the seedling platform 25 decreases during planting work, the seedlings loaded on the passenger vehicle body 1 can be easily and accurately replenished by turning backward from the seat 12 position. Further, even if the weight of the driver sitting on the seat 12 changes, the load of the driver is mainly received at the position of the rear wheel axle 6a, so that the longitudinal balance of the vehicle body is not greatly disturbed, and stable rice planting work can be performed.

【Effect of the invention】

The present invention uses the above-mentioned technical means to install the axle 6a of the large-diameter rear wheel 6 in a far rearward state from the transmission case 4, so that the longitudinal distance between the front wheel 5 and the front wheel 5 is adjusted by the transmission case 14. It is possible to obtain a towing vehicle that can be separated and can exert a stable traction force when traveling, and a frame 13 that protrudes rearward in plan view is provided between the transmission cases 14, 14 that extend long rearward, so that it can be moved Since the seat 12 is configured to support the seat 12, the driver's seat 12 can be moved largely toward the rear axle 6a even though the transmission case 14 protrudes rearward for a very long time, making it possible to perform rice planting from the driver's seat 12. The seedlings can be easily supplied to the seedling platform 25 of the machine 3, and since most of the weight of the driver is applied to the rear axle 6a, the front and rear balance is not greatly disturbed by weight fluctuations, and stable running can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a side view of a riding type rice transplanter showing an embodiment of the present invention, and FIG. 2 is a plan view showing the main part thereof with some parts omitted. DESCRIPTION OF SYMBOLS 1... Passenger vehicle body, 2... Link mechanism, 3... Rice transplanting machine, 4... Mission case, 5... Front wheel, 6... Rear wheel, 6a... Rear wheel axle, 8... Engine, 12 ...seat, 13 extension frame, 14...
...Transmission case, 14a... Cover tube, 25... Seedling stand, 27... Float, 27a... Float front end.

Claims (1)

[Claims] 1. A prime mover 8 is provided on the front end side of the passenger vehicle body 1, a transmission case 4 for traveling is attached to the rear side,
A cover tube 14a is provided on both left and right sides of this transmission case 4, and the base side is attached to this cover tube 14a, and the diameter of the rear wheel 6 attached to the rear end side is approximately the same or larger. The transmission case 14 is provided with a transmission case 14 that extends as much as described above, and the rear wheels 6 for running are attached to the rear end side of the transmission case 14, so that the pair of left and right transmission cases 14 in plan view are connected to the cover tube 14a and the transmission case 14. The left and right transmission cases 14, 1 are connected from the transmission case 4 side to the left and right transmission cases 14, 1.
An extension frame 13 is provided which extends into the gate-shaped space between the two transmission cases 14 in plan view, and this frame 13 supports the driver's seat 12 which is substantially disposed above the left and right transmission cases 14, 14. , and the base side of the lifting link mechanism 2 that connects the rice transplanting work machine 3 to the frame 13 side is connected to the riding type rice transplanter.