JP3582190B2 - Farming machine for paddy field - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a paddy field agricultural work machine such as a rice transplanter that can selectively perform an operation of planting seedlings while substituting a plowed field and an operation of planting seedlings in an uncultivated field.
[0002]
[Prior art]
The most common method of planting a rice field is to plow the field, fill it with water, scrape it, make the surface of the entire field muddy, and plant the seedlings. Conventionally, the plowing work, Dai掻work, but planting work has been performed on separate, recently, provided Dai掻row data to Dai掻the field with the progress of the aircraft in front of the planting unit, A rice transplanter has been developed that can perform a scraping operation and a planting operation at the same time.
[0003]
Moreover, rice How the no-till planting planting seedlings Put the water in the field that are not raised plowing also been noted in recent years, as for planting seedlings in this manner, seedling planted in front of the planting unit There is also developed a rice transplanter in which a plow for partially cultivating a topsoil portion of a field is provided by a necessary width, and a seedling is planted on a trace plowed by the plow.
[0004]
[Problems to be solved by the invention]
By the way, when a rotor that performs scraping or plowing is provided on the front side of the planting portion, a gear box that transmits to the central axis of the rotor, or a bearing box that supports the central axis of the rotor is placed on the top soil surface of the field. There was a problem in that scattered straw waste and the like were entangled and caused trouble. Therefore, an object of the present invention is to prevent a trouble caused by entanglement of straw waste or the like with the center axis of the rotor in a paddy field agricultural work machine provided with such a rotor .
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, the agricultural machine for paddy fields according to the present invention mounts the planting section so as to be able to move up and down via a lifting link device behind a traveling vehicle body having a pair of left and right front wheels and a rear wheel, and can be used as a substitute for the field or A cultivating rotor is provided on the front side of the planting portion so as to move up and down integrally with the planting portion, and the center axis of the rotor is located at the left rear side through a gear box positioned leftward from the left and right center. A transmission transmission case having a built-in transmission is provided on the rear side of the rear wheel final case, and a rotor drive shaft protruding from the rear of the rear wheel final case is driven by the transmission transmission. An input shaft that projects forward from the upper part of the case is connected via a first universal joint, and an output shaft that projects rearward from the lower part of the transmission case projects forward from the gear box. Connected to the input shaft via a second universal joint, and transmitted from a drive bevel gear attached to the gear box input shaft to a driven bevel gear attached to the central shaft to rotationally drive the central shaft, Furthermore, a bearing box for supporting the gear box or the central axis, Rutotomoni is positioned so as to pass through the vehicle body of the front wheels of the running locus on the position of the rotor corresponding to Article with each planting of the planting unit Is characterized in that a plowing claw is provided which can be switched between a protruding state of the rotor protruding from the cylindrical body and a stored state housed in the cylindrical body .
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show one embodiment of the present invention. In the rice transplanter 1 which is a farming machine for paddy fields, a planting section 4 is attached to the rear of a traveling vehicle body 2 via a lifting link device 3 so as to be able to move up and down, and is integrally formed with the planting section in front of the planting section 4. Dai掻low data 5 is provided so as to be up and down.
[0007]
The traveling vehicle body 2 has a pair of left and right front wheels 6, 6 and a rear wheel 7, 7, and includes a transmission case 9 disposed at a front portion of the transmission body and a main frame 10 fixed to a rear surface of the transmission case. A frame is configured, and an engine 12 is mounted on a pedestal 11 fixed to the main frame 10. 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 section drive output. The running 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. Then, the rear wheels 7, 7 are driven. The planting section drive output is transmitted to the planting clutch 18 via the first planting transmission shaft 17, and is transmitted to the planting section 4 therefrom.
[0008]
The cockpit 20 is installed on an engine cover 21 that covers an upper part of the engine 12. A steering handle 23 is provided above the front cover 22 in front of the steering wheel. The periphery of the engine cover 21 and the front cover 22 is a horizontal step floor 24. In addition, spare seedling mounting tables 25, 25 on which spare seedlings are placed are provided on both front left and right sides of the body.
[0009]
In the lifting link device 3, an upper link 31 and lower links 32, 32 are attached to a link base frame 30 fixedly provided at a rear end of the main frame 10 so as to be vertically rotatable. A connection frame 33 for detachably connecting the planting section 4 is attached. Then, the connection frame 35 on the planting portion side is fixed to the connection frame 33, and the planting portion 4 is connected to the traveling vehicle body 2. A rolling shaft 36 protruding forward from the planting portion 4 is rotatably inserted and connected to a lower portion of the connection frame 35 on the planting portion side, and the planting portion 4 is supported in a freely rolling manner.
[0010]
The elevating operation of the elevating link device 3 is performed by the 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 has its piston rod side connected to the lower end of a swing arm 38 provided integrally with the base of the upper link 31. ing. When the hydraulic cylinder 37 is expanded and contracted, the upper link 31 and the lower links 32, 32 rotate up and down, and the planting section 4 moves up and down with a substantially constant posture.
[0011]
The planting unit 4 includes a seedling table 41 that reciprocates left and right with a seedling placed on a transmission case 40 also serving as a frame, and a number of planting lines for planting the seedlings on the seedling table one by one on the topsoil surface ( (6 sets) are attached. The transmission case 40 includes a central case 40a located at the center in the left and right directions, transmission pipes 40b and 40b protruding left and right from the central case, and extends rearward from the rear surface of the central case 40a and the distal ends of the transmission pipes 40b and 40b. Power is transmitted from the planting clutch 18 to the input portion of the central case 40a via the second planting transmission shaft 45, and is provided in the central case 40a. The seedling mounting table 41 is reciprocated right and left by the seedling mounting drive mechanism, and the seedling feeding belts 41a,... Of the seedling mounting table 41 are intermittently driven for seedling feeding, and after the planting transmission cases 40c, 40c, 40c. The planting devices 42,... Provided on the left and right sides of the end are driven. Thereby, the seedlings on the seedling mounting table 41 are sequentially supplied to the seedling outlets 40b,... One by one, and the seedlings are planted by the planting devices 42,.
[0012]
On the lower side of 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 slide on the mud surface and level the mud surface before seedling planting.
[0013]
In the substitute rotor 5, a ridge 52 is formed on the outer peripheral surface of a cylindrical body 51 integrated with the central axis 50 in the left-right direction so as to intersect the circumferential direction. Those in the illustrated example, wavy ridges 52, but has ... a multiple arranged pattern may be a pattern which arranged spiral ridge continuous. The center shaft 50 is rotatably supported by a gear box 54 located to the left of the left and right centers and a bearing box 55 located to the right of the left and right centers. Then, by hooking the suspension hooks 56, 56 fixed to the gear box 54 and the bearing box 55 on the hook receivers 57, 57 on the side of the transmission pipes 40b, 40b, the substitute rotor 5 is attached to the planting section 4.
[0014]
Power is transmitted from the left rear wheel final case 16 to the center shaft 50 of the substitute rotor 5 to rotate. That is, a speed change transmission case 60 having a built-in speed change mechanism is provided at the rear side of the left rear wheel final case 16, and a substitute rotor drive shaft 61 projecting from the rear portion of the rear wheel final case 16 is connected to the speed change transmission case 60. An input shaft 60a protruding forward from the upper portion is connected via a first universal joint 62, and an output shaft 60b protruding rearward from a lower portion of the transmission case 60 is connected to an input shaft 54a protruding forward from the gear box 54. The two universal joints 63 are connected to each other. Thus, by providing the speed change transmission case 60 between the rear wheel final case 16 and the gear box 54, and adjusting the height difference between the substitute rotor drive shaft 61 and the gear box input shaft 54a, the first and second universal The bending angles of the joints 62 and 63 are reduced to enable smooth transmission. The rotational power input to the gear box 54 is transmitted from a drive bevel gear 54b attached to the gear box input shaft 54a to a driven bevel gear 54c attached to the center shaft 50, and drives the center shaft 50 to rotate.
[0015]
The substitute rotor 5 has different diameters depending on the left and right positions, and the portions 5A, 5A, 5A located at the front of the floats 43,... Have a large diameter and are located at the front of the space between the floats 43. The portions 5B, 5B have a smaller diameter. Thereby, in the part where the seedlings are not planted, the agitation of the soil by the scraper rotor 5 is reduced, and the occurrence of mudflow that adversely affects the planted seedlings is reduced. Alternatively, the portion 5B positioned in the front portion of the spacing portion of the float 43 and the float 43, by widening the interval between the ridges 5 2 for 5B, may reduce the occurrence of mud flow. Further, the gear box 54 and the bearing box 55 are arranged on the small diameter portions 5B, 5B of the substitute rotor, and are positioned so as to pass on the traveling trajectories M, M of the left and right front wheels 6, 6, respectively. Accordingly, when the no-tillage planting is performed, the gear box 54 and the bearing box 55 pass through the traces of the front wheels 6 and 6 that have crushed straw chips and the like scattered on the topsoil surface of the field. Straw chips and the like are prevented from becoming entangled with the bearing box 55.
[0016]
In addition, a total of four plowing claws 70,... Are respectively attached to positions corresponding to the planting strips PL1 to PL6 of the substitute rotor 5 with a phase shift of 90 degrees in side view. The tilling claws 70 are rotatably mounted on mounting plates 71,... Integral with the central shaft 50 by mounting pins 72,..., And rotate in one direction as shown by a solid line in FIG. The tip protrudes outward from the claw holes 73 formed in the cylindrical body 51 in the engaged state, and is entirely accommodated in the cylindrical body 51 when rotated in the other direction as shown by a chain line in FIG. It has become so. With the locking pins 74 provided on the end face of the substitute rotor 5, the plowing claws 70 are fixed at the respective positions of the protruding state and the housed state. The locking pins 74 are slidable in the axial direction and urged by the springs 75 to the side of immersion in the substitute rotor 5, so that the plowing claws 70 are always in a protruding state or stored. When the locking pins 74 are pulled out against the force of the springs 75, the plowing claws 70 are projected from the projected state to the retracted state or from the retracted state. Can be changed to state.
[0017]
When the seedlings are planted while watering the cultivated field and scraping, the cultivating claws 70 are stored and the scraping rotor 5 is rotated, and the planting unit 4 is driven to run. The vehicle body 2 is advanced. Then, the ridges 52,... Are crushed by pushing the ridges 52,... On the surface layer of the field to the side by the rotation of the scraper rotor 5, and the soil and water are stirred to form a mud, and the mud surface is leveled. Furthermore, the floats 43,... Level the traces, and the planting devices 42,.
[0018]
When non-tilling planting is performed by watering a field that is not plowed, the plowing claws 70 are projected and the scraping rotor 5 is rotated, and the planting unit 4 is driven to drive the traveling vehicle body. Advance 2. Then, the plowing claws 70,... Plow the topsoil portion of the field by the width required for planting the seedlings by the rotation of the scraping rotor 5, and the planting devices 42,. Plant.
[0019]
In the case where seedlings are planted in a field that has been plowed in advance and then flooded with water, the substituting rotor 5 is removed to perform the planting operation. Since the substitute rotor 5 is merely attached to the planting section 4 by hooking the suspension hooks 56 on the hook receivers 57, 57, the removal operation is easy.
[0020]
Next, FIG. 5 shows a different rotor 5 '. The tilling claws 70,... Are rotatably mounted on mounting plates 71,... Integrated with the center shaft 50 by mounting pins 72, and are rotated in one direction as shown by a solid line in FIG. In the state, the tips of the plowing claws 70 project out of the claw holes 73 formed in the cylindrical body 51, and in the state where they are turned to the other as shown by the chain line in FIG. ,... Are entirely housed in the cylindrical body 51 as in the above-described example. Are urged by springs 80 to project from the cylindrical body 51. The rotation direction of the scraping rotor 5 'can be switched between forward and reverse directions. As a mechanism for switching the rotation direction, for example, a configuration is adopted in which 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 center shaft 50, and one driven from the drive bevel gear 54b. What is necessary is just to comprise so that if it transmits to the bevel gear 54c, the substitute rotor 5 'may rotate normally, and if it transmits from the drive bevel gear 54b to the other driven bevel gear 54c, the substitute rotor 5' may rotate reversely.
[0021]
When seedlings are to be planted while watering the cultivated field and substituting, the substituting rotor 5 'is rotated in the direction A in FIG. 5B. Then, the plowing claws 70,... Are stored due to the resistance from the soil, the plowing claws 70,. When water is applied to a non-plowed field for non-tilling planting, the scraping rotor 5 'is rotated in the direction B in FIG. 5B. Then, the plowing claws 70,... Remain in the protruding state due to resistance from the soil, and the plowing claws 70,.
[0022]
【The invention's effect】
As described above, since for paddy field agricultural machine according to the present invention comprises a Dai掻row data to Dai掻or plowing a field with the progress of the aircraft in front of the planting unit, the cash掻又the plowing Seedlings can be planted simultaneously with waking. In addition, since the gear box transmitting to the central shaft of the rotor performing the scraping or plowing or the bearing box supporting the central shaft is located on the trajectory of the front wheels, straw chips and the like are formed on the topsoil surface of the field. Even if it is scattered, the front wheels pass after they have been crushed, and there is no danger that the gear box or the bearing box will be entangled with waste chips or the like.
[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 section and a substitute rotor.
4A is a rear cross-sectional view of a part of a substitute rotor, and FIG. 4B is an SS cross-sectional view thereof.
5A is a rear cross-sectional view of a part of a different scraper rotor, and FIG. 5B is an SS cross-sectional view thereof.
[Explanation of symbols]
1 rice transplanter (agricultural work machine for paddy field)
2 Running vehicle body 3 Elevating link device 4 Planting section 5, 5 'Raving rotor 52 Ridge 70 Plowing claw 74 Locking pin

Claims (1)

A planting unit is mounted on the rear of the traveling vehicle body having a pair of left and right front wheels and a rear wheel via a lifting link device so as to be able to move up and down, and a rotor for scraping or plowing a field is provided on the front side of the planting unit. The center axis of the rotor is rotationally driven by the power transmitted from the left rear wheel final case through a gear box located leftward from the left and right center. A transmission transmission case incorporating a transmission is provided on the rear side of the rear wheel final case, and a rotor drive shaft protruding from a rear portion of the rear wheel final case is connected to an input shaft protruding forward from an upper portion of the transmission transmission case. A second universal joint is connected to an input shaft projecting rearward from a lower portion of the transmission case while an output shaft projecting rearward from a lower portion of the transmission case is connected to the input shaft projecting forward from the gearbox. And coupled, and said central axis and configured to be rotated from a driving bevel gear mounted on the gearbox input shaft is transmitted to the driven bevel gear mounted on said central shaft, further, the gear box or the center axis the bearing box for supporting the vehicle body of Rutotomoni is positioned so as to pass through the front of the running locus on the position of the rotor corresponding to Article with each planting of the planting unit, the cylindrical body of the rotor A farming machine for paddy fields, comprising a plow which can be switched between a protruding state and a housed state stored in the cylinder .

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