JP2510819B2 - Walk-behind rice transplanter - Google Patents

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 in which one wheel is provided substantially at the center of the body frame of the rice transplanter.

[0002]

2. Description of the Related Art In such a one-wheeled walk-type rice transplanter, a pair of left and right steering handles for an operator to stably control 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 by tilting the seedling mounting table on the steering handle.

Therefore, in a conventional one-wheel type walk-type rice transplanter, as disclosed in, for example, Japanese Utility Model Publication No. 52-29140, a rear portion of a vehicle body frame having one wheel at its center is provided at the rear. A pair of extending left and right steering handles are provided in a projecting manner, and a rearward tilting type seedling mounting table is disposed on the upper surfaces of the steering handles so as to be capable of reciprocating left and right. A seedling planting case equipped with a seedling planting mechanism is arranged on both sides, and a transverse feed shaft for laterally feeding the seedling platform is provided in the case.

However, in this way, by disposing the seedling planting case having the seedling planting mechanism on the left and right sides and the lateral feed shaft at the portion between the wheel and the seedling table, the lateral feed is performed. Although there is an advantage that the seedling table can prevent mud in the field from being applied to the axis, a seedling planting case equipped with a seedling planting mechanism on the left and right sides and a lateral feed shaft are provided between the wheels and the seedling table. Since it is necessary to open a space for arranging the rice transplanter, there is a problem that the total length of the rice transplanter becomes long and the maneuverability of the rice transplanter by an operator is deteriorated.

An object of the present invention is to solve this problem in a state where it is possible to surely reduce splashing of mud in a field on the transverse feed mechanism for the seedling mounting table. is there.

[0006]

In order to achieve this technical object, the present invention is directed to "a pair of left and right steering handles extending rearward is projectingly provided at a rear portion of a vehicle body frame having one wheel at substantially the center thereof. A rearward tilting type seedling mounting table is arranged on the upper surfaces of both steering handles so as to be able to reciprocate left and right, and a seedling planting case equipped with a seedling planting mechanism in a portion of the body frame on the front side of the seedling mounting table. In the rice transplanter consisting of, the two cases for planting seedlings are made into two cases for planting seedlings, and both cases for planting seedlings are located on the front side of the seedling stand and on the left and right sides of the wheel. The seedling planting mechanism is provided on the inner surfaces of the two seedling planting cases, while the front ends of the pair of left and right steering handles are attached to the both seedling planting cases, and the lower portions of the steering handles are attached to the both sides. While keeping the upper part of the steering wheel from the seedling stand, A large bulge is formed in a side view between the upper surfaces of the two steering handles and the lower portion of the rear surface of the seedling mounting table so as to be separated from the base, and the seedling mounting base is located inside the bulging portion. At a position higher than a guide rail that supports the lower end of the reciprocally movable body, a lateral feed shaft for laterally feeding the seedling mounting table is provided, and at least one end of the lateral feed shaft is one of the two steering handles. The lateral feed shaft is provided so as to project laterally from the steering handle, and the lateral feed shaft is pivotally supported by the both steering handles. Furthermore, the projecting end of the lateral feed shaft and one of the two seedling planting cases. A chain case incorporating a power transmission chain is mounted between the seedling planting case and the shaft protruding from the outer side surface. "

[0007]

As described above, according to the present invention, the case for planting seedlings is made into two cases for planting seedlings, and both cases for planting seedlings are provided on the front side of the seedling table and on the wheels. By arranging the seedling planting mechanism on the inner side surface of both seedling planting cases, the both seedling planting cases and the wheels can overlap in the front-rear direction, and the seedling platform can be placed. Can be brought closer to the wheels, and the total length of the rice transplanter can be shortened by this amount.

By the way, when a lateral feed shaft for the rear-tilting type seedling mounting table is provided between the rear surface side of the seedling mounting table and the both steering handles, the rear surface of the seedling mounting table and both steering handles are provided. Between them and the horizontal feed shaft, a space for providing the horizontal feed shaft must be opened, in other words, both control handles must be displaced backward from the rear surface of the seedling mounting table by the amount of the horizontal feed shaft. As described in JP-A-55-56514, JP-A-55-58012, and the like, both steering handles are substantially parallel to the rear-tilting type seedling table in a side view. In the case of the above configuration, the rear ends of both steering handles will be displaced rearward by providing a transverse feed shaft between the steering handles and the seedling stand, which increases the total length of the rice transplanter. In addition to the horizontal feed axis, Since that mud is splashing easily, it is the low durability of the horizontal feed axis.

On the other hand, according to the present invention, as described above,
The lower parts of both steering handles are curved rearward so as to be separated from the seedling mount with the upper part of the steering handles being close to the seedling mount, and the upper faces of the steering handles and the lower part of the rear surface of the seedling mount are separated from each other. A large bulge is formed in a side view between the two ridges, and the inside of the bulge is laterally fed to the seedling table to a position higher than a guide rail that reciprocally supports the lower end of the seedling table. It was decided that the shaft would be supported by both steering handles.

As described above, by disposing the lateral feed shaft inside the bulging portions provided at the lower portions of the two steering handles and at a portion higher than the guide rail with respect to the lower end of the seedling placing table, Without shifting the rear end of the steering handle backward from the rear-tilting type seedling mounting table, place the lateral feed shaft for the rear-tilting type seedling mounting table between the two steering handles and the seedling mounting table. Since it can be installed under the condition that mud in a field scene is not splashed on the feed axis, it is possible to further shorten the total length of the rice transplanter without lowering the durability of the horizontal feed axis. it can.

That is, according to the present invention, two seedling planting cases are provided, and the two seedling planting cases are arranged on both the left and right sides of the wheel, and the rearwardly bulging portions are provided at the lower portions of the two steering handles. The total length of the rice transplanter can be significantly shortened in combination with the provision of the horizontal feed shaft in the bulging portion, so that the maneuverability of the operator of the one-wheel type rice transplanter can be significantly improved. Have an effect.

Moreover, the laterally long lateral feed shafts can be supported at the bulging portions in the lower portions of the left and right steering handles, and in order to support the lateral feed shafts, a frame member or a transmission case is separately provided on the back side of the seedling mounting table. Since it is possible to omit the provision of the above, it is possible to reduce the weight of the machine body.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment shown in the drawings will be described below. In the drawings, reference numeral 1 indicates a vehicle body frame of a rice transplanter. This vehicle body frame 1 has a transmission case 3 on which an engine 2 is mounted and a transmission case 3 for the engine 2. The pair of left and right hollow side frames 4 and 5 extending rearward from the left and right ends of the left side frame 4 and the left and right side frames 4 and 5 have a planar U-shape.
A front end of a swing case 7 extending rearwardly between the five is pivotally rotatably mounted, and a traveling wheel 8 located on the center line of the vehicle body frame 1 is provided at the tip of the swing case 7. The engine 2 is rotationally driven by the traveling mission case 6 through 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 and 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 obliquely upward toward the rear. On the side of the upper surface 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 between the steering handles 13 and 14.
To provide.

Then, with the lower part of the rear surface of the seedling table 17 out of the two steering handles 13 and 14 and the upper part of the two steering handles 13 and 14 approaching the seedling table 17, the seedling table 17 is placed. A large bulging portion 54 is formed between the seedling mounting table 17 and the lower back surface of the seedling mounting table 17 in a side view by forming a curved shape so as to be away from the rear side. 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 seedlings are provided inside the swelling portion 54 on the rear surface of the seedling stand 17. In arranging a lateral feed mechanism for laterally feeding the platform 17,
A guide rail 1 that supports a lateral feed shaft 18 having a reciprocal thread groove 19 on its outer periphery so as to reciprocally move the lower end of the seedling stand 17.
It is arranged at a position higher than 5 in parallel with the moving direction of the seedling stand 17, and the left and right ends of the lateral feed shaft 18 are pivotally supported by bearings 20 and 21 mounted on the upper surfaces of the steering handles 13 and 14, respectively. , The boss body 22 slidably fitted on the lateral feed shaft 18
The boat-shaped key 23 that engages with the reciprocating screw groove 19 is provided, and the engaging piece 46 in which the sliding boss 22 is integrally formed is attached to the rear surface of the seedling stand 17 and is inserted into the cylindrical receiving piece 47. And seedling stand 1
7, the rotation of the lateral feed shaft 18 in the direction of the arrow A (that is, the direction in which it is pushed up with respect to the seedling stand 17)
Is configured to reciprocate the seedling mounting table 17 left and right and to be laterally fed, and the pair of left and right adjustments is made such that the engagement piece 46 to be inserted therein is sandwiched from the left and right sides of the tubular receiving member 47. Screws 48 and 49 are provided to make the sliding boss 22 and the seedling stand 1
The relative position in the left-right direction with respect to 7 is adjustable.

A vertical feed cam 44 for vertically feeding the seedling mat on the seedling mount 17 is provided on both sides of the horizontal feed shaft 18.
On the other hand, the lateral feed shaft 18 is fitted with expandable and contractible bellows type boots 50 and 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 at the inner end of 4, 25.
Respectively, and the nail shaft 25 in the seedling planting case 10 on the right side
On the upper bevel gear 28, a bevel gear 30 at the tip of a shaft 29 inserted into the right side frame 5 is attached to the left bean 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 outer side of the left side seedling planting case 9 and the outer side of the left steering handle 13, and the left side seedlings are arranged. 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 is rotationally transmitted from the pawl shaft 24 to the lateral feed shaft 18.

Reference numerals 38 and 39 denote both sides of the wheel 8 and both side frames 4 and 5 and both seedling planting cases 9 and 1.
2 shows a pair of left and right floats located at the lower part of 0, and the rear parts of the floats 38 and 39 are the steering handles 13 and 1
4 is attached to the base of 4 through a planting depth adjusting rod 40,
The front end is attached to both side frames 4 and 5 via links 41 so as to be vertically movable. In this case, a flat triangular flat portion 4 is formed on the inner surface of both floats 38, 39.
2, 43 are integrally formed, and seedlings are planted at the rear portions of the both leveling portions 42, 43 by the both seedling planting mechanisms 26, 27.

In this structure, if a seedling mat is supplied on 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 laterally reciprocated laterally by the rotation of the lateral feed shaft 18, and the seedling mat on the seedling table 17 is divided one by one by the vertically swinging seedling planting mechanisms 26 and 27, and then float 38 , 39 of each flat portion 42, 43
Planted along the two lines one after another in the field after arranging in.

[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 15 Guide Rail 18 Side Feed Shaft 36 Chain Case 54 Swelling 55 Rod

Claims (1)

(57) [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 a substantially central portion, and a rearward tilting type seedling table is reciprocally moved on the upper surfaces of the steering handles. While freely arranged, the front of the body frame
A seedling planting mechanism equipped with a seedling planting mechanism is located on the front side of the seedling table.
In a rice transplanter equipped with a stand, the case with the seedling plant
Into two seedling planting cases, and these two seedling planting cases
On the front side of the seedling table and on the left and right sides of the wheel
The seedling planting mechanism on the inner surface of both seedling planting cases.
On the other hand, the pair of left and right operations are provided in the both seedling planting cases.
The front end of the vertical handle is attached, and the lower portions of the two steering handles are curved rearward so as to be separated from the seedling mounting table without separating the upper portions of the steering handles from the seedling mounting table, and the upper surfaces of the steering handles are separated. And a lower part of the rear surface of the seedling table, a large bulge portion is formed in a side view, and the inside of the bulge portion is higher than a guide rail that reciprocally supports the lower end of the seedling table. A lateral feed shaft for laterally feeding the seedling mounting table to the left and right is arranged such that at least one end of the lateral feed shaft projects laterally from one of the two steering handles. The lateral feed shaft is pivotally supported by both the steering handles, and the protruding end of the lateral feed shaft is further supported.
And one of the above-mentioned seedling planting cases
Power transmission chain between the shaft and the shaft protruding from the outer surface.
A walk- behind rice transplanter that is equipped with a built-in chain case .