JPH05292815A - Walking-type rice transplanter - Google Patents

Abstract

PURPOSE:To provide the subject rice transplanter shortened in the whole length and reduced in its weight, so designed that a pair of left and right handles extending backward are projected in the rear of the body frame having one wheel close to the center and, above both the handles, a backwardly tilted type seedling table is set so as to be free to make left and right reciprocating motions. CONSTITUTION:The lower parts of both handles 13, 14 are bent backward so that the upper parts thereof approach a seedling table 17 but stand apart therefrom to provide a large expanded space 54, when viewed sideways, in between the upper surfaces of both the handles and the lower part of the back surface of the seedling table 17, and this space is equipped with a traverse feed mechanism 18 for said seedling table 17 so as to project one or both ends of said mechanism sideways from one of both the handles 13, 14, and this mechanism 18 is supported on both the handles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a so-called one-wheeled walking type rice transplanter having only one wheel at the substantially central portion of the body frame of the rice transplanter.

[0002]

2. Description of the Related Art In such a one-wheeled type rice transplanter, a pair of left and right steering handles for an operator to stably operate the machine is extended to the rear of the machine. It is necessary to provide the seedling mat, and it is preferable that the seedling mat is supplied to the seedling mounting table so that the seedling mounting table is tilted rearward on the steering handle.

In this case, if a lateral feed mechanism for laterally feeding the seedling placing table is arranged on the surface side of the seedling placing table, a necessary space for that is required between the rear end of the wheel and the seedling placing table. However, there is a problem that the total length of the aircraft becomes longer accordingly. The present invention has a technical problem to solve this problem.

[0004]

In order to achieve this technical object, the present invention provides a pair of left and right steering handles, which extend rearward, at the rear portion of a vehicle body frame having one wheel in the center thereof. In a rice transplanter in which a rearward tilting type seedling mounting table is arranged on the upper surface of the steering handle so that it can reciprocate left and right, the lower part of the both steering handles, with the upper part of the two steering handles not separated from the seedling mounting base, It is curved rearward so as to be separated from the seedling mounting table, and a large bulge is formed between the upper surfaces of the two steering handles and the lower portion of the rear surface of the seedling mounting base in a side view. Is arranged so that at least one end of the lateral feed mechanism laterally projects from one of the two steering handles, and the lateral feed mechanism is Structure to support both steering handles It was.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment shown in the drawings will be described below. In the drawings, reference numeral 1 is a body frame of a rice transplanter, and the body frame 1 is a transmission case 3 on which an engine 2 is mounted on the upper surface and both left and right ends of the transmission case 3. A pair of left and right hollow side frames 4 and 5 extending rearward from the left and right side frames 4 and 5 are formed in a U-shape in plan view. The front end of the swing case 7 extending rearward is rotatably pivoted,
At the tip of the swing case 7, traveling wheels 8 located on the center line of the body frame 1 are provided.
Is rotationally driven from the engine 2 by the traveling mission case 6 via a chain (not shown) in the swing case 7.

At the rear ends of the side frames 4 and 5,
The seedling planting cases 9 and 10 are fixed to each other, and the seedling planting cases 9 and 10 are connected to each other by a gate-type connecting frame 11, and between the gate-type connecting frame 11 and the swing case 7. By providing the wheel lifting device 12 and moving the wheels 8 up and down, the entire rice transplanter is lifted and lowered. 1
Reference numerals 3 and 14 denote a pair of left and right steering handles extending rearward from the seedling planting cases 9 and 10, respectively.
3, 14 have their base ends fastened to the seedling planting cases 9 and 10 with bolts 52 and 53, and extend substantially horizontally rearward from the base ends, and then incline diagonally upward toward the rear. On the upper surface side of the inclined portion, a seedling stand 17 supported movably in the left and right lateral directions by a guide rail 15 and a rail mechanism 16 mounted horizontally horizontally between the steering handles 13 and 14.
To provide.

With the lower part of the rear surface of the seedling placing table 17 of the two steering handles 13 and 14 and the upper portion of the operating handles 13 and 14 of the two operating handles 13 and 14 approaching the seedling placing table 17, the seedling placing table 17 is placed. A large bulging portion 54 is formed between the lower part of the back surface of the seedling placing table 17 and the lower part of the back surface of the seedling placing table 17 by being curved so as to be separated rearward from. Between the two steering handles 13 and 14, the swelling portion 54 is connected to a rear side position by a connecting rod 55, and the swelling portion 54 on the rear surface of the seedling placing table 17 has the seedling placing table concerned. In arranging a lateral feed mechanism for laterally feeding 17 laterally, a lateral feed shaft 18 having a reciprocating screw groove 19 on the outer periphery is arranged parallel to the moving direction of the seedling stand 17, and the lateral feed shaft 18 is provided. Bearings 20, whose left and right ends are mounted on the upper surfaces of the steering handles 13 and 14,
A boat-shaped key 23 that engages with the reciprocating screw groove 19 is provided on a boss 22 slidably fitted on the transverse feed shaft 18 by means of the slide boss 22. The engagement piece 46 shaped in a shape is inserted into the cylindrical receiving member 47 attached to the back surface of the seedling mounting table 17 and associated with the seedling mounting table 17, whereby the lateral feed shaft 18 rotates in the direction of arrow A (that is, The seedling mounting table 17 is configured to reciprocate laterally in the left-right direction in a direction in which the seedling mounting table 17 is pushed up), and the engagement member to be inserted into the tubular receiving member 47 is inserted into the cylindrical receiving member 47. A pair of left and right adjusting screws 48 and 49 are provided so as to sandwich 46 from both left and right sides, and the relative position in the left and right direction between the sliding boss 22 and the seedling stand 17 is adjustable.

Further, on both sides of the horizontal feed shaft 18, a vertical feed cam 44 for vertically feeding the seedling mat on the seedling mounting table 17,
On the other hand, the lateral feed shaft 18 is fitted with elastic bellows type boots 50, 51 on both sides of the sliding boss 22. Claw shafts 24 and 25 are horizontally supported in the two seedling planting cases 9 and 10, respectively.
Vertical swing type seedling planting mechanism 26, 27 is provided at the inner end of 4, 25.
Respectively, and the nail shaft 25 in the seedling planting case 10 on the right side
In the upper bevel gear 28, a bevel gear 30 at the tip of a shaft 29 inserted in the right side frame 5 is provided on the left side of the seedling planting case 9
The bevel gears 31 on the claw shafts 24 are engaged with the bevel gears 33 at the tips of the shafts 32 inserted into the left side frame 4 to transmit power from the engine 2 to both the claw shafts 24, 25. While driving the seedling planting mechanisms 26, 27, a chain case 36 having a longitudinal length is arranged between the outside of the left-hand side seedling planting case 9 and the outside of the left-hand side steering handle 13, and the left-side seedling plant is provided. The sprocket 34 at the outer end of the pawl shaft 24 in the planted case 9 and one of the left and right ends of the lateral feed shaft 18 are projected outward from one of the steering handles 13, 14 of the steering handles 13, 14. Then, the chain 37 in the chain case 36 is wound around the sprocket 35 fitted to the outer end portion, and rotationally transmitted from the pawl shaft 24 to the lateral feed shaft 18.

Reference numerals 38 and 39 denote a pair of left and right floats located on both sides of the wheel 8 and below both side frames 4, 5 and both seedling planting cases 9, 10, and the rear portions of both floats 38, 39. Is attached to the bases of both the steering handles 13 and 14 via a planting depth adjusting rod 40, and the front end is attached to both side frames 4 and 5 via links 41 so as to be vertically movable. In this case, both floats 3
On the inner surface of 8, 39, the flat triangular flat parts 42, 4
3 is integrally formed, and seedlings are planted at the rear portions of the both flattening portions 42, 43 by the both seedling planting mechanisms 26, 27.

In this structure, when the seedling mat is supplied onto the seedling placing table 17 and the wheel 8 and the seedling planting mechanisms 26 and 27 are driven by the start of the engine 2, the rice transplanter moves forward by the wheel 8 while the seedling placing machine is moved forward. The table 17 is reciprocated laterally by the rotation of the lateral feed shaft 18 and is laterally fed. The seedling mat on the seedling table 17 is divided by the vertically swinging seedling planting mechanisms 26 and 27 one by one, and then the float 38 is preliminarily set. , 39 of each flat portion 42, 43
Planted along the two rows in the field after the soil is prepared.

[0011]

The operation and effect of the present invention have been described above.
According to the present invention, a pair of left and right steering handles extending rearward are provided at the rear part of the vehicle body frame having one wheel at substantially the center thereof, and a rear tilting type seedling table is freely reciprocally movable on the upper surfaces of the steering handles. It is easy to balance the left and right of the aircraft with the left and right steering handles even if there is only one wheel.

By the way, a lateral feed mechanism for the seedling placing table is provided between the seedling placing table and the two steering handles so that at least one end of the lateral feeding mechanism is located laterally from one of the steering handles. When it is provided so as to project, a space for providing the transverse feed mechanism is provided between the seedling mounting table and both steering handles, in other words, both steering handles are placed on the back surface of the seedling mounting table. It is necessary to shift it backward by an amount corresponding to the lateral feed mechanism.
As described in Japanese Patent Laid-Open No. 58012 and the like, when both steering handles have a mechanism that is substantially parallel to the seedling mounting table in a side view, the rear ends of both steering handles are the two steering handles. Since the transverse feed mechanism is provided between the handle and the seedling paddy, the rice planter is shifted rearward, which increases the total length of the rice transplanter.

On the other hand, according to the present invention, the lower portions of the two steering handles are curved rearward so as to be separated from the seedling placing table in a state where the upper portions of the steering handles are close to the seedling placing table. By forming a large bulge in a side view between the upper surfaces of the two steering handles and the lower part of the rear surface of the seedling table, and by disposing a transverse feed mechanism for the seedling table in the bulged portion, both the steering wheels can be operated. Without shifting the rear end of the handle backward from the seedling table, between the two steering handles and the seedling table,
A transverse feed mechanism can be provided for the seedling stand, and in addition to this, a transverse feed mechanism is provided between the rear end of the wheel and the lower end of the seedling stand. Since the lower end of the platform can be brought closer to the rear end of the wheel, the total length of the rice transplanter can be shortened. In addition, a laterally long lateral feed mechanism can be supported at the bulging portion under the left and right steering handles, and a separate frame member or transmission case must be provided on the back side of the seedling mounting table to support the lateral feed mechanism. Since it can be omitted, it also has an effect of reducing the weight of the aircraft.

[Brief description of drawings]

FIG. 1 is a side view of a rice transplanter.

FIG. 2 is a plan view of a rice transplanter.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

[Explanation of symbols]

 1 Body Frame 2 Engine 3 Transmission Case 4, 5 Side Frame 7 Swing Case 8 Wheels 9, 10 Case with Seedling Plant 13, 14 Steering Handle 17 Seedling Stand 18 Side Feed Shaft 36 Chain Case 54 Swelling Section 55 Connecting Rod

Claims (1)

[Claims] Claims: 1. A pair of left and right steering handles extending rearward are projected from a rear portion of a vehicle body frame having one wheel at substantially the center thereof, and a rearward tilting seedling mounting table is reciprocated left and right on the upper surfaces of the steering handles. In the rice transplanter freely arranged, the lower portions of the two steering handles are curved rearward so as to be separated from the seedling mounting table without the upper portions of the steering handles being separated from the seedling mounting base. A large bulging portion is formed between the upper surface of the handle and the lower portion of the rear surface of the seedling placing table in a side view, and a lateral feed mechanism for laterally feeding the seedling placing table to the left and right is provided in the bulging portion. A walk-behind rice transplanter characterized in that at least one end of the mechanism is disposed so as to project laterally from one of the two steering handles, and the transverse feed mechanism is supported by the both steering handles.