JPH0243450B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a rice transplanter, and more particularly, to a structure in which a transmission case containing a reduction mechanism for transmitting power from the engine to running wheels and a seedling planting mechanism is disposed adjacent to the engine. Furthermore, the overall length of the rice transplanter can be made shorter by arranging the engine block side surface and the transmission case side surface so that at least a portion thereof overlaps in the longitudinal direction of the machine body.

An example applied to a single-wheel walking type rice transplanter shown in the drawings will be described below. In the drawings, reference numeral 1 is a body frame of the rice transplanter, and the body frame 1 includes a transmission case 3 to which an engine 2 is attached to the upper surface, and a transmission case 3. The transmission case 3 has a pair of left and right hollow side frames 4 and 5 extending rearward from both left and right ends of the transmission case 3. The front end of a swing case 7 extending rearward between the 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.

Seedling planting cases 9 and 10 are fixed to the rear ends of both side frames 4 and 5, respectively, and the two seedling planting cases 9 and 10 are connected by a gate-shaped connecting frame 11. The connecting frame 11 is provided with a wheel lifting device 12, which will be described in detail later, 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 laterally to the left and right by a guide rail 15 and a rail mechanism 16 mounted horizontally between both handles. Both handles 13, 14 at the location
The transverse feed shaft 1 has a reciprocating thread groove 19 on the outer periphery.
8 is mounted on a bearing 20 parallel to the moving direction of the seedling stand 17.
A boss body 22 that is pivotally supported by a shaft 21 and slidably fitted on the transverse feed shaft 18 is provided with a boat-shaped key 23 that engages with the reciprocating screw groove 19, and engages the boss body 22 with the seedling platform 17. By doing so, the seedling table 17 is configured to be reciprocated from side to side by the rotation of the lateral feed shaft 18 and traversely fed. Incidentally, cams 4 are provided at both ends of the horizontal feed shaft 18 in order to vertically feed the seedlings at the end of the horizontal feed of the seedling table 17.
4.45. Said seedling planting case 9,1
0, claw shafts 24 and 25 are each supported horizontally and laterally, and swing-type seedling planting mechanisms 26 and 27 are provided at the inner ends of both claw shafts 24 and 25, respectively, and the right side is used for planting seedlings. 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 claw shaft 25 in the case 10, and the bevel gear 31 on the claw shaft 24 in the left seedling planting case 9 is attached to the left bevel gear 30. side frame 4
The bevel gears 33 at the tips of the shafts 32 inserted therein are engaged with each other, and power is transferred from the engine 2 to both claw shafts 24, 2.
5 to drive the seedling planting mechanisms 26 and 27 thereof, and to the sprocket 34 at the outer end of the claw shaft 24 in the left seedling planting case 9 and the sprocket 35 at the outer end of the transverse feed shaft 18. A chain 37 in a chain case 36 is wound around the chain 37 to transmit rotation from the pawl shaft 24 to the lateral feed shaft 18.

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 vertically movable. In this case, the inner surfaces of both floats 38 and 39 are integrally provided with planar triangular flattened parts 42 and 43, and the seedling planting mechanisms 26 and 27 are used to plant the seedlings at the respective rear parts thereof. There is.

The base end of a bell crank lever 46 is rotatably attached to the right side frame 5 by a pin 47, and the tip of the bell crank lever 46 is connected to the upper surface of the swing case 7 via a link, so that the crank An elevating device 12 that expands and contracts in the axial direction by rotation of the handle 48 is attached to the portal connecting rod 11, and the lower end of the female threaded pipe 49 of the elevating device 12 is connected to the other end of the crank lever 46, and the female thread The swing case 7 is elastically biased downward via a compression spring (not shown) that is fitted into the tube 49 and installed between the crank lever 46 and the lifting device 12.

Power is transmitted from the engine 2 to the running wheels 8 via a transmission mechanism 50, which will be described later. That is,
The engine 2 block and the traveling transmission case portion 6 are arranged so that the side surface 2 from which the output shaft 51 of the engine 2 projects and the side surface 6 from which the input shaft 52 of the traveling transmission case portion 6 of the transmission case 3 projects face each other.
and the pulley 53 of the output shaft 51
and the input shaft 5 in the traveling transmission case part 6.
Power is transmitted between the output shaft 51 of the engine 2 and the input shaft 52 of the transmission case 3 via an endless power conveying body, such as by winding a belt 55 between the pulley 54 of the engine 2 and the input shaft 52 of the transmission case 3. In the traveling transmission case portion 6, gears 57 and 5 are connected between the input shaft and the intermediate shaft 56.
8 transmission, and the small spur gear 5 on the intermediate shaft 56.
9 and a large spur gear 60 of a transmission shaft 61 are meshed with each other, and the transmission shaft 61 is provided with a main clutch 64 which is slidable only in its axial direction and biased by a spring 63 in the side direction of the large spur gear 60. It can be turned on and off from the handle 13, etc., and power is transmitted to the traveling wheels 8 through a sprocket 65 and a chain 66, which attach the base end of the swing case 7 to the tip of the transmission shaft 61.

In addition, the shaft 2 in the left and right side frames 4 and 5
Gears are transmitted from the intermediate shaft 56 to shafts 67 and 68 shown in FIG. A power coupling/disconnecting clutch 69 to the mechanisms 26, 27, etc. is provided.

In this configuration, when seedlings are supplied to the seedling stand 17 and the engine 2 is started, its output shaft 5
Power is transmitted from the pulley 53 of 1 to the pulley 54 of the input shaft 52 of the transmission case 3 via the belt 55,
Inside the transmission case 3, from the input shaft 52 to the intermediate shaft 56
If the seedling planting mechanisms 26 and 27 are driven through the shafts 67 and 68, and the traveling wheels 8 are driven from the intermediate shaft 56 through the transmission shaft 61 and the chain 66 in the swing case 7, the rice transplanter is driven by the wheels 8. While moving forward, the seedling platform 17 is reciprocated from side to side by the rotation of the transverse feed shaft 18, and the seedling pine on the seedling platform 17 is moved by the vertically swinging seedling planting mechanisms 26, 27. After being split one share at a time, the float is 3 in advance.
After leveling the ground in the leveling sections 42 and 43 of No. 8 and 39, the plants are planted in two rows in sequence on the field.

In this embodiment, the shaft 68 inside the transmission case 3
From both left and right ends of the shaft 2 in the side frames 4 and 5
9 and 32 to the rear seedling planting mechanisms 26 and 27, and the power is also transmitted to the traveling wheels 8 from the transmission shaft 61 in the traveling transmission case part 6 which is integrated with the transmission case 3. Since this is done via a transmission mechanism inside the case 7, the shaft 61,
68 are both arranged so as to extend in the left and right direction of the fuselage. When such a transmission case 3 and the engine 2 that supplies power to the transmission case 3 are arranged adjacent to each other, as in the present invention, the engine block side surface 2' from which the engine 2 output shaft 51 protrudes and the input shaft 52 of the transmission case 3 are arranged side by side. The engine output shaft 51 and Even when power is transmitted between the input shaft 52 of the transmission case 3 via an endless power conveyor, the distance between the input shaft 52 and the output shaft 51 is changed back and forth by a maximum amount approximately equal to the sum of the radii of the pulleys or sprockets. It is only necessary to separate the rice transplanter from the rice transplanter, and as a result, the body frame 1 can be shortened in the front-rear direction, and the overall length of the machine body can be shortened, so that the rice transplanter itself can be made compact and lightweight, and has the effect of being able to be maneuvered easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a walking rice transplanter, FIG. 2 is a plan view thereof, FIG. The figure is an enlarged sectional view taken along the line -- in FIG. 1, and FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 1...Vehicle frame, 2...Engine, 3...
Transmission case, 4, 5...Side frame, 6...
Traveling transmission case part, 7... Swing case, 8... Traveling wheels, 26, 27... Seedling planting mechanism,
51... Output shaft, 52... Input shaft, 53, 54...
...Pulley, 55...Belt, 2'...Engine block side, 6'...Transmission case side.

Claims (1)

[Claims] 1 The engine is mounted on the body frame of the rice transplanter,
The output shaft of the engine and the input shaft of the transmission case are arranged so that their axes extend in the left-right direction of the aircraft body, and power is transmitted from the transmission case to the traveling wheels and the seedling mechanism, and the engine block and A rice planting in which a transmission case and a transmission case are arranged to face each other such that the side surface of the engine block from which the output shaft projects and the side surface of the transmission case from which the input shaft projects overlap at least in part in the front-rear direction and face each other. The power transmission device of the machine.