JPH09140215A - Farm working machine for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a farm working machine for a paddy field capable of performing operations to transplant seedlings in a plowed field while puddling the plowed field and transplant the seedlings in an unplowed field and readily changing over both the operations such as a rice transplanter. SOLUTION: This farm working machine for a paddy field is obtained by installing plowing tines 70... for partially plowing a surface soil part of a field in only a width required for transplanting seedlings with the advance of a machine body in each puddling roller 5 so as to enable the changeover from a state for actuating the plowing tines 70... to perform plowing operations and a state without actuating the plowing tines 70... to perform plowing operations in a rice transplanter equipped with the puddling rollers 5 for puddling the field with the advance of the machine body on the front side of a transplanting part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for paddy fields such as rice transplanters, which can selectively perform work of planting seedlings while scratching a cultivated field and planting seedlings in a non-cultivated field. It relates to agricultural work machines.

[0002]

[Prior Art] After plowing a field, pour water to scratch it,
The most common method for rice planting is to make seedlings with the surface layer of the entire field in a muddy state. Conventionally, the plowing work, the scraping work, and the planting work are performed separately, but a scraping roller is provided on the front side of the planting section to scrape the field with the progress of the machine, and the scraping work. A rice transplanter has been developed that can perform both planting and planting work at the same time.

In recent years, a rice cultivation method using non-tillage planting, in which water is planted in a field that is not tilled, is also attracting attention. As a method for planting seedlings by this method, the rice is planted in front of the planting section. A rice transplanter has also been developed in which a plowing claw for plowing the topsoil part of a field is partially provided for planting seedlings, and the seedlings are planted on the traces plowed by the plowing claws.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a rice transplanter or the like capable of selectively planting seedlings while scratching a cultivated field and planting seedlings in an uncultivated field. The challenge is to provide agricultural work machines for paddy fields.

[0005]

In order to solve the above problems, the present invention has the following arrangement. That is, the paddy field agricultural work machine according to the present invention, in the paddy field agricultural work machine provided with a scraping roller for scraping the field along with the progress of the machine body on the front side of the planting section, in the progress of the machine body to the scraping roller. Along with this, the feature is that the plowing claw that partially cultivates the surface soil part of the field by the width required for seedling planting is attached so as to be switchable between a state of plowing and a state of not plowing.

[0006]

1 to 4 show one embodiment of the present invention. In this rice transplanter 1, which is an agricultural work machine for paddy fields, a planting unit 4 is mounted at the rear of a traveling vehicle body 2 via an elevating link device 3 so as to be able to move up and down, and on the front side of the planting unit 4 integrally with the planting unit. The scraping roller 5 is provided so as to move up and down.

The traveling vehicle body 2 has a pair of left and right front wheels 6 and 6 and rear wheels 7 and 7, and has a mission case 9 arranged in the front part of the machine body and a main frame 10 fixed to the rear part of the mission case. The fuselage frame is composed of the engine 1 and the engine 1 on the pedestal 11 fixed to the main frame 10.
2 is mounted. The rotational power of the engine 12 is shifted by the transmission in the transmission case 9, and is taken out as a running output and a planting part drive output. The traveling output is transmitted to front wheel final cases 14 and 14 via a front axle (not shown) to drive front wheels 6 and 6, and to rear wheel final cases 16 and 16 via rear wheel transmission shafts 15 and 15. It is transmitted and drives the rear wheels 7, 7. Further, the planting section drive output is transmitted to the planting clutch 18 via the first planting transmission shaft 17, and is transmitted from there to the planting section 4.

The cockpit 20 is installed on an engine cover 21 that covers the upper portion of the engine 12. The steering handle 23 is provided above the front cover 22 in front of the steering handle 23.
Is provided. Around the engine cover 21 and the front cover 22, a horizontal step floor 24 is formed. In addition, on the left and right sides of the front part of the machine body, there are provided spare seedling mounts 25, 25 on which spare seedlings are placed.

The lifting link device 3 includes a main frame 10
The upper link 31 and the lower links 32, 32 are vertically rotatably attached to the link base frame 30 fixedly provided at the rear end portion of the link base frame 30.
A connection frame 33 for detachably connecting is attached. Then, the connecting frame 35 on the planting part side is fixed to the connecting frame 33, and the planting part 4 is connected to the traveling vehicle body 2. A rolling shaft 36 projecting forward from the planting section 4 is rotatably inserted and connected to a lower portion of the coupling frame 35 on the side of the planting section, and the planting section 4 is supported rotatably.

The lifting / lowering operation of the lifting / lowering link device 3 is performed by a hydraulic cylinder 37. The hydraulic cylinder 37 has its base side pivotally supported by a support member (not shown) fixed to the main frame 10, and its piston rod side connected to a lower end of a swing arm 38 integrally provided at the base of the upper link 31. ing. When the hydraulic cylinder 37 is expanded / contracted, the upper link 31 and the lower links 32, 32 rotate up and down, and the planting part 4 moves up and down with a substantially fixed posture.

The planting section 4 comprises a transmission case 40 also serving as a frame, a seedling placing table 41 for placing seedlings and reciprocating left and right, and a planting article for planting one seedling on the seedling placing table on the surface soil. A few minutes (6 sets) of planting devices 42, ... Are assembled. The transmission case 40 is a central case 40a located at the center of the left and right.
And a transmission pipe 40 protruding left and right from the central case
b, 40b, and a planted transmission case 40c, 40c, 40c extending rearward from the rear portion of the central case 40a and the tips of the transmission pipes 40b, 40b. Power is transmitted to the input portion of the central case 40a via the transmission shaft 45, and the central case 40a
The seedling mounting table driving mechanism provided therein reciprocates the seedling mounting table 41 left and right, and at the same time, each seedling feeding belt 41 of the seedling mounting table 41.
.. are intermittently driven to drive seedlings, and the planting devices 42, ... Provided on the left and right sides of the rear end of the planting transmission cases 40c, 40c, 40c are also driven. As a result, the seedlings on the seedling mounting table 41 are sequentially supplied to the seedling take-up ports 40b, ... One by one, and the planting devices 42, ... Plant the seedlings in the field.

Below the planting part 4, three floats 43, ... Which support a part of the weight of the planting part 4 on the mud surface are provided. At the time of planting work, these floats 43, ...
Slides on the mud surface to level the mud surface before planting seedlings.

The scraping rotor 5 has a projection 52 formed on the outer peripheral surface of a cylindrical body 51 which is integrated with the center axis 50 in the left-right direction so as to intersect with the circumferential direction. In the illustrated example, a plurality of wavy ridges 52, ... Are arranged, but a continuous spiral ridge may be arranged. The center shaft 50 is rotatably supported by a gear box 54 located to the left of the left-right center and a bearing box 55 located to the right of the left-right center.
Then, these gear box 54 and bearing box 55
The suspension hooks 56, 56 fixed to the transmission pipe 40.
By hooking the hook receivers 57, 57 on the b and 40b sides, the scraping rotor 5 is attached to the planting part 4.

Power is transmitted from the left rear wheel final case 16 to the central shaft 50 of the skimming rotor 5 to rotate it. That is, the shift transmission case 60 having a built-in transmission mechanism is provided on the rear side of the left rear wheel final case 16, and the scraper rotor drive shaft 61 protruding from the rear portion of the rear wheel final case 16 is attached to the shift transmission case 60. The output shaft 60b, which is connected to the input shaft 60a projecting from the upper part forward through the first universal joint 62, and which is projected rearward from the lower part of the speed change transmission case 60, is connected to the gear box 54.
Is connected to the input shaft 54a that projects forward from the second universal joint 63. As described above, the speed change transmission case 60 is provided between the rear wheel final case 16 and the gear box 54, and the height difference between the scraper rotor drive shaft 61 and the gear box input shaft 54a is adjusted, whereby the first and second universals. The bending angles of the joints 62 and 63 are made small to enable smooth transmission. Gear box 5
The rotational power input to the gear 4 is transmitted to the gearbox input shaft 54a.
Is transmitted from the drive bevel gear 54b attached to the center shaft 50 to the driven bevel gear 54c attached to the center shaft 50.
Is driven to rotate.

The diameter of the skimming rotor 5 is different depending on the left and right positions. The portions 5A, 5A, 5A located in front of the floats 43, ... Have large diameters, and the front portion of the space between the floats 43 and 43 is large. 5B, 5B located at
Has a smaller diameter. As a result, the stirring of soil by the scraping rotor 5 is reduced in the area where seedlings are not planted,
It reduces the occurrence of mud flow that adversely affects the planted seedlings. Alternatively, the generation of the mud flow may be reduced by widening the interval between the protrusions 52, 'in the portions 5B, 5B located in the front part of the space between the float 43 and the float 43. Further, the gear box 54 and the bearing box 55 are arranged on the small diameter portions 5B, 5B of the scraping rotor, and are positioned so as to pass on the traveling loci M, M of the left and right front wheels 6, 6, respectively. As a result, when no-till planting is performed, the gearbox 54 and the bearing box 55 pass through the traces of the front wheels 6 and 6 suppressing the dust scattered on the surface soil surface of the field. The bearing box 55 is prevented from being entangled with straw chips and the like.

Further, the planting lines PL1 to P of the substitute rotor 5 are
At a position corresponding to L6, a total of four plowing claws 70, ... Are attached with a phase shift of 90 degrees in a side view. The plowing claws 70, ... Are rotatably mounted on a mounting plate 71, ... Integral with the central shaft 50 by mounting pins 72,., And are pivoted to one side as shown by a solid line in FIG. In this state, the tip projects outward from the claw holes 73 formed in the cylindrical body 51, as shown in FIG.
In the state of being rotated to the other side as shown by the chain line, the whole is housed in the cylindrical body 51. By the locking pins 74 provided on the end surface of the skimming rotor 5, the plowing claws 70 are fixed in the projected state and the stored state. The locking pins 74, ... Are slidable in the axial direction and are urged by springs 75, ... toward the side to be retracted into the scraping rotor 5, so that the plowing claws 70 ,. Although it is in a state of being fixed in the state, when the locking pins 74, ... Are withdrawn against the force of the springs 75, .., the plowing claws 70, .. Can be changed to the state.

When seedlings are planted while pour water on the cultivated field while scraping them, the plowing claws 70, ... Are put in the stored state to rotate the scraping rotor 5 and drive the planting section 4. Then
The traveling vehicle body 2 is advanced. Then, by rotating the scraping rotor 5, the ridges 52, ... Grind while pushing laterally the soil mass of the surface layer of the field, stirring the soil and water to form a mud and leveling the mud surface, Further, the floats 43, ... Ground the traces, and the planting devices 42, ... Plant the seedlings on the seedling stand 41 on the grounded mud surface.

When performing no-tillage planting by pouring water on a field that is not tilled, the plowing claws 70, ... Are made to project and the substitute rotor 5 is rotated, and the planting section 4 is driven. ,
The traveling vehicle body 2 is advanced. Then, by the rotation of the scraping rotor 5, the plowing claws 70, ... Plowing the topsoil portion of the field by the width required for planting seedlings, and the planting devices 42 ,. Plant.

When seedlings are to be planted in a field that has been plowed in advance and then filled with water to scrape, the scraping rotor 5 is removed to carry out the planting work. Since the scraping rotor 5 is simply attached to the planting portion 4 by hooking the suspension hooks 56, 56 on the hook receivers 57, 57, the removal work is easy.

Next, FIG. 5 shows a different scraping rotor 5 '. The plowing pawls 70, ... Are rotatably attached to the mounting plate 71, ... Integral with the central shaft 50 by the mounting pins 72, .., and are turned to one side as shown by the solid line in FIG. In the state, the tips of the plowing claws 70, ... Project outside from the claw holes 73 ,.
In the state of being rotated to the other side as shown by the chain line in (b), the entire plowing claws 70, ... Are housed in the cylindrical body 51, as in the above example. The plowing pawls 70, ... Of the scraping rotor 5'are urged by the spring 80 toward the side projecting from the cylindrical body 51. Further, the rotation direction of the substitute rotor 5'can be switched between forward and reverse directions. As a mechanism for switching the rotation direction, for example, a drive bevel gear 54b attached to the gear box input shaft 54a is selectively transmitted to a pair of driven bevel gears 54c, 54c attached to the central shaft 50, and one driven bevel gear 54b drives the driven bevel gear 54b. When transmitted to the bevel gear 54c, the scraping rotor 5'rotates normally and the drive bevel gear 54 '
It is only necessary to configure the substitute rotor 5 ′ to rotate in the reverse direction when transmitted from b to the other driven bevel gear 54c.

When the seedlings are planted while pouring water in the cultivated field while scraping them, the scraping rotor 5'is set at A in FIG. 5 (b).
Rotate in the direction. Then, the tilling claws 70, ... Are put in a housed state due to the resistance from the soil, the tilling claws 70, ... Do not perform the tilling action, and the substitute scraping rotor 5 ′ only performs the scraping action. Further, in the case of performing non-tillage planting by pouring water in a field that is not tilled, the substitute scraping rotor 5 ′ is rotated in the B direction in FIG. 5 (b). Then, due to the resistance from the soil, the plowing nail 70,
... remains in a protruding state, and the plowing claws 70, ... plowing the surface soil portion of the field by the width required for planting seedlings.

[0022]

As described above, the paddy field agricultural working machine according to the present invention is provided with a scraping roller on the front side of the planting section for scraping the field as the machine progresses, and the scraping roller serves as a machine. As the top soil part of the field is partially cultivated by the width required for seedling planting, the plow claws are attached so that they can be switched between the plowing and non-plowing modes. By appropriately switching the raised claws to the state of plowing and not plowing, without exchanging the scraping rotor,
It has become possible to selectively perform the work of planting seedlings while scratching the cultivated field and the work of planting seedlings in the uncultivated field.

[Brief description of the drawings]

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

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

FIG. 3 is a plan view of a main part of a planting part and a scraping rotor.

FIG. 4A is a rear cross-sectional view of a part of the scraped rotor, and FIG. 4B is a cross-sectional view taken along line S-S thereof.

5A is a rear cross-sectional view of a portion of a different scraping rotor, and FIG. 5B is a cross-sectional view taken along line S-S thereof.

[Explanation of symbols]

 1 Rice transplanter (agricultural working machine for paddy field) 2 Traveling vehicle 3 Lifting link device 4 Planting part 5, 5'scraping rotor 52 Ridge 70 Plowing claw 74 Locking pin

Claims (1)

[Claims] 1. In a paddy field agricultural working machine provided with a scraping roller on the front side of a planting part for scraping the field with the progress of the machine, the surrogate part of the field is attached to the scraping roller as the machine progresses. An agricultural working machine for paddy fields, characterized in that a plowing claw that partially cultivates a required width for planting seedlings is attached so that it can be switched between a plowing state and a non-plowing state.