JPH0115293Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a one-wheel walking type rice transplanter whose body is supported by one wheel.

Conventionally, this type of single-wheel rice transplanter was developed, for example, in
- As disclosed in Publication No. 29140, etc., a seedling planting case equipped with a seedling planting mechanism on both left and right sides is arranged at a central position behind one wheel that supports the vehicle body frame. However, the reason why the seedling planting case with the seedling planting mechanism is installed in a position behind the wheels is that the seedling planting case with the seedling planting mechanism is installed between the wheels and the seedling stand. As a result, the total length of the rice transplanter became longer.

Therefore, Japanese Utility Model Application Publication No. 55-56514 as a prior art uses two seedling planting cases with a seedling planting mechanism,
By placing this on the left and right outside of the wheel,
It is suggested that the seedling stand be placed closer to the wheels.

However, in this prior art, the rear ends of a pair of left and right hollow side frames extending rearward from both left and right sides of the engine-equipped transmission case located in front of the wheels are extended to the rear of the seedling stand, and the rear ends A seedling planting case is attached to the top, and both seedling planting cases go under the bottom of the seedling stand and extend to the front part, and a seedling planting mechanism is installed at the tip. Extending to the rear of the seedling platform increases the length of both side frames, and the length of the seedling planting case also increases by the length of the seedling planting case extending from the rear of the seedling platform to the front. This would increase the weight of the aircraft.

The present invention solves the above-mentioned problem when two seedling planting cases with a seedling planting mechanism are placed on the left and right sides of the wheels, and also provides power to the transverse feed shaft of the seedling platform. Assembling and disassembling the transmission mechanism,
The purpose is to make maintenance work such as inspection easier.

Therefore, in the present invention, a seedling planting case is attached to the rear ends of a pair of left and right hollow side frames extending rearward from both left and right sides of a transmission case with an engine, and a seedling planting mechanism is provided on the inner surfaces of both seedling planting cases. on the other hand,
In a walk-behind rice transplanter comprising one wheel between the two side frames, and a rearward-tiling seedling stand and a pair of left and right control handles arranged behind the wheel, A power transmission mechanism from the engine to the seedling planting mechanism is provided, and the seedling planting case is located at the front of the seedling platform, and the transverse feed shaft for the seedling platform is located at the rear of the seedling platform. A power transmission mechanism from the seedling planting case to the transverse feed shaft of the seedling platform is disposed on the outer side of one of the seedling planting cases.

Below, an embodiment of the present invention will be explained with reference to the drawings. In the drawing, 1 is a body frame of a rice transplanter, and the body frame 1 includes a transmission case 3 to which an engine 2 is attached on the top surface, and a rearward side from both left and right sides of the transmission case 3. A pair of left and right hollow side frames 4 extending from
The transmission case 3 is configured in a U-shape in plan view.
The traveling mission case 6, which is integrated with the
A front end of a swing case 7 extending rearward between the side frames 4 and 5 is rotatably pivoted, and a running wheel 8 positioned on the center line of the vehicle body frame 1 is provided at the tip of the swing case 7. The traveling wheels 8 are rotationally driven by the engine 2 from the traveling transmission case 6 via a chain (not shown) in a swing case 7.

Seedling planting cases 9 and 10 located on the front side of a seedling stand 17, which will be described in detail later, are fixed to the rear ends of the side frames 4 and 5, respectively, and the space between the two seedling planting cases 9 and 10 is fixed. The wheels 8 are connected by a gate-shaped connecting frame 11 that straddles them, and this gate-shaped connecting frame 1
A wheel lifting device 12 is provided between the rice transplanter 1 and the swing case 7, and by moving the wheels 8 up and down, the entire rice transplanter can be moved up and down.

Reference numerals 13 and 14 indicate a pair of left and right operating handles extending rearward from the seedling planting cases 9 and 10, and the operating handles 13 and 14 are bent in an upwardly inclined shape, and the upper surface of the inclined portion has a A rear-tilting seedling stand 17 is provided which is movably supported in the left and right lateral directions by a guide rail 15 and a rail mechanism 16 mounted horizontally between both control handles. Both control handles 1 on the back side
3 and 14, a transverse feed shaft 18 having a reciprocating thread groove 19 on the outer periphery is pivotally supported by bearings 20 and 21 in parallel to the moving direction of the seedling stand 17, and is slidably covered by the transverse feed shaft 18. The fitted boss body 22 is provided with a boat-shaped key 23 that engages with the reciprocating screw groove 19, and by engaging the boss body 22 with the seedling platform 17, the seedling platform 17 can be moved left and right by the rotation of the transverse feed shaft 18. It is configured to reciprocate and cross feed. Incidentally, cams 44 and 45 are provided at both ends of the horizontal feed shaft 18 in order to vertically feed the seedling pine at the end of the horizontal feed of the seedling table 17. In both the seedling planting cases 9, 10, claw shafts 24, 25 are supported horizontally and laterally, and at the inner ends of the claw shafts 24, 25, swinging seedling planting mechanisms 26, 27 are respectively provided. The bevel gear 30 at the tip of the shaft 29 inserted into the right side frame 5 is attached to the bevel gear 28 on the pawl shaft 25 in the seedling planting case 10 on the right side, and the bevel gear 30 at the tip of the shaft 29 inserted into the right side frame 5 is attached to the bevel gear 28 on the pawl shaft 25 in the seedling planting case 9 on the left side. The bevel gears 33 at the tips of the shafts 32 inserted into the left side frame 4 are meshed with the bevel gears 31 of the left side frame 4, and the power is transmitted from the engine 2 to the claw shafts 24, 25, so that the seedling planting mechanism 26, 27.

The sprocket 34 at the outer end of the claw shaft 24 in the left seedling planting case 9 and the sprocket at the outer end of the horizontal feed shaft 18 are used to place the left seedling. A chain 37 in a chain case 36 arranged on the outside of the planting case 9
It is constructed so that the rotation is transmitted from the pawl shaft 24 to the traverse feed shaft 18 by wrapping the shaft around the shaft.

Further, 38 and 39 are on both sides of the wheel 8, and both side frames 4 and 5 and both seedling planting cases 9,
10, the rear portions of both floats 38, 39 are attached to the bases of the handles 13, 14 via planting depth adjustment rods 40, and the front ends are attached to both side frames 4. ,5
It is attached via a link 41 to be able to move up and down automatically. In this case, both floats 38, 39
The inner surface thereof is integrally provided with flattened portions 42 and 43 having a planar triangular shape, and the two seedling planting mechanisms 26 and 27 are located above the flattened portions 42 and 43, respectively. Seedling planting mechanism 26 at the rear part of 42, 43,
Seedlings are to be planted on the 27th.

Note that a power transmission mechanism such as a chain case 36 for transmitting power to the horizontal feed shaft 18 in the seedling platform 17 may be provided on the outer side of the right seedling planting case 10.

In this configuration, if seedling mats are supplied onto the seedling platform 17 and the wheels 8 and the seedling planting mechanisms 26 and 27 are driven by starting the engine 2, the rice transplanter will
While moving forward, the seedling platform 17 is reciprocated from side to side by the rotation of the transverse feed shaft 18, and
The seedlings on the seedling table 17 are placed on the seedling planting mechanism 2 that swings up and down.
After the plants are divided one by one by means 6 and 27, they are planted sequentially along two rows in a field that has been leveled in advance by the leveling parts 42 and 43 of floats 38 and 39, respectively.

In this case, the present invention provides both seedling planting cases 9 and 10 attached to the rear ends of both side frames 4 and 5.
By arranging it on the front part of the seedling stand 17,
Although the seedling platform 17 can be brought closer to the wheels 8 and the overall length of the rice transplanter can be shortened, both side frames 4 and 5 are extended to the rear of the seedling platform 17 as in the prior art. This is not necessary, and the lengths of both side frames 4 and 5 can be shortened, while both seedling planting cases 9 and 10 are also long, extending from the rear part of the seedling platform 17 to the front part, as in the prior art. Since there is no need to construct a rice transplanter, the lengths of both side frames 4 and 5 can be shortened, and the weight of the rice transplanter can be reduced.

Therefore, according to the present invention, it is possible to reduce the overall length and weight of the single-wheel rice transplanter, which reduces the supporting load when the operator supports the rice transplanter so that it does not tilt in the left-right direction. It is lighter, which improves driving performance and turning performance.

Moreover, the present invention provides the power transmission mechanism to the transverse feed shaft of the seedling platform on the outside of the seedling planting case, which has the seedling planting mechanism on the inner surface, so that the power transmission mechanism and the seedling planting mechanism can be connected to each other. Since the distance is large, it is possible to reduce the mud thrown up by the seedling planting mechanism from adhering to the power transmission mechanism, and also to facilitate the disassembly and assembly of the power transmission mechanism.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of a rice transplanter, FIG. 2 is a plan view of the rice transplanter, and FIG. 3 is an enlarged cross-sectional view taken from the side of FIG. 1. 1...Vehicle frame, 2...Engine, 3...
Transmission case, 4, 5...Side frame, 8...
Wheel, 7... Swing case, 9, 10... Seedling planting case, 26, 27... Seedling planting mechanism, 13, 14
...Control handle, 17...Seedling stand, 18...Transverse feed shaft, 36...Chain case for power transmission.

Claims (1)

[Scope of utility model registration request] A seedling planting case is attached to the rear end of a pair of left and right hollow side frames extending rearward from both left and right sides of the transmission case with an engine, and a seedling planting mechanism is provided on the inner surface of both the seedling planting cases, while a seedling planting mechanism is provided on the inner surface of both the seedling planting cases. In this walk-behind rice transplanter, the rice transplanter has one wheel between the wheels, a rearward-tiling seedling stand, and a pair of left and right control handles behind the wheel. A power transmission mechanism is provided to the mechanism, and the seedling planting case is located at the front surface of the seedling platform, and the transverse feed shaft for the seedling platform is located at the rear surface of the seedling platform. A walk-behind rice transplanter characterized in that a power transmission mechanism from the seedling planting case to the horizontal feed shaft of the seedling platform is disposed on the outer side of one of the cases.