JP3968481B2 - Seedling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a seedling planting unit for planting seedlings in a farm field and a ground working unit for performing ground work such as plowing and cutting, for example, planting seedlings while plowing a non-plowed farm field The present invention relates to a seedling transplanting machine that transplants seedlings while scratching a field that has not been scraped.
[0002]
[Prior art]
In the seedling transplanting machine, a seedling planting portion is provided so as to be able to move up and down relative to the traveling vehicle body, and a ground work unit is provided so as to be able to be raised and lowered relative to the seedling planting portion. When planting seedlings while plowing, a tilling device is attached to the ground working unit, the seedling planting unit is lowered to the working position, and the ground working unit is lowered to the working position. When planting seedlings while scraping, a ground scraping device is attached to the ground working unit, the seedling planting unit is lowered to the working position, and the ground working unit is lowered to the working position. When only seedling planting is performed, the seedling planting part is lowered to the working position, and the ground working part is raised to the non-working position.
[0003]
[Problems to be solved by the invention]
The tilling device and the shaving device are configured such that the rotor to which the pawl for plowing or shaving is attached rotates around the rotation axis in the left-right direction. Since the diameter to the action part of a nail | claw is different, it is necessary to change the work position of the ground work part in the state which mounted | worn the tilling apparatus, and the work position of the ground work part in the state which mounted | worn the scraping apparatus. The same applies to the case where ground work is performed with a work device other than the tilling device and the shaving device mounted on the ground work unit. Thus, it is an object of the present invention to easily perform an operation of changing the work position of the ground work unit in accordance with the type of work device to be mounted on the ground work unit.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, in the seedling transplanting machine according to the present invention, the seedling planting part (4) is provided so that it can be raised and lowered with respect to the traveling vehicle body, and the ground working part (5) is provided so that it can be raised and lowered relative to the seedling planting part, In the seedling transplanting machine in which a plurality of types of working devices can be selected and mounted on the ground working unit , the ground working unit is located on the left side from the center of the ground working unit frame (90) arranged in the left-right direction of the machine body. The chain case (91) is provided at a shifted position, supported by the right and left link mechanisms from the seedling planting part, and lifted by driving the actuator (133) for raising and lowering the ground work part provided on the right side of the left and right center. And a lifting operation tool (144) for raising and lowering the ground working unit to a working position and a non-working position, and ground work at the working position according to the type of work device attached to the ground working unit. Part Switch the height relative to the planting unit switching operation member and (145), the fine adjustment dial (146) and is provided capable of finely adjusting the working position of the ground work part, the lifting operation member is the upper position to the starting point neutral position It is configured to return to the neutral position when it is released, and when it is operated to the upper position for a predetermined time or more, the ground work unit rises to the non-working position, and when it is operated to the lower position for a predetermined time or more, When the working unit descends to the working position and is operated to the upper position or the lower position within a predetermined time, the working unit is configured to move up and down only during the operation time .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on one embodiment shown in FIGS. In the seedling transplanting machine 1, a seedling planting part 4 is provided at the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting part 4 can be moved up and down. A ground work unit 5 is provided to move up and down.
[0006]
The traveling vehicle body 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 7 and 7 and rear wheels 8 and 8 as drive wheels. A mission case 10 is disposed in the front part of the airframe, and left and right sides from the mission case. Front wheel final cases 12 and 12 are provided at the front end portions of the front wheel axle frames 11 and 11 extending in the forward direction, and the front wheel 7 and the front wheel axle projecting outward from the front wheel support portions 12a and 12a that can be turned to the front wheel final case. 7 is attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 10, and the rear wheel frame 17 is supported by a front and rear rolling shaft 16 rotatably supported by the rear end portion of the main frame. The rear wheels 8 and 8 are attached to a rear wheel axle that is supported in a freely rolling manner and protrudes outwardly from rear wheel gear cases 18 and 18 provided at left and right ends of the rear wheel frame.
[0007]
The engine 20 is mounted on the main frame 15. A part of the rotational power of the engine taken out by the engine output shaft 20a protruding from the left side surface portion of the engine 20 is transmitted to the drive shaft 22a of the hydraulic pump 22 provided on the transmission case 10 by the first belt transmission device 21. Further, it is transmitted from the pump drive shaft 22a to the mission input shaft 10a by the second belt transmission device 23. And after shifting with the transmission in the mission case 10, it is divided into driving power and planting power. The driving power is transmitted to the front wheel final cases 12 and 12 through the front axles in the front wheel axle frames 11 and 11 to rotate the left and right front wheels 7 and 7 and through the rear wheel transmission shafts 25 and 25. The left and right rear wheels 8 and 8 are driven to rotate by being transmitted to the rear wheel gear cases 18 and 18. The planting power is transmitted to the seedling planting part transmission case 50, which will be described later, via the first planting transmission shaft 26, the intermediate gear case 27, and the second planting transmission shaft 28. Drive.
[0008]
The remaining engine rotational power is transmitted from the engine output shaft 20a by the third belt transmission device 30 to the input shaft 31a of the ground working portion transmission gear case 31 disposed in the vicinity of the left rear wheel 8 and from the gear case to the ground work. It is transmitted to the later-described chain case 91 via the part transmission shaft 32. The input shaft 31a projects to the left and right opposite sides (inside) with respect to the left rear wheel 8. For this reason, the water and mud splashed by the left rear wheel 8 are blocked by the ground working unit transmission gear case 31, thereby preventing the water and mud from adhering to the belt 30 a and the driven pulley 30 b of the third belt transmission device 30. .
[0009]
A cockpit 34 is installed on the upper side of the engine 20, and a steering handle 35 for steering the left and right front wheels 7 and 7 is provided in front of the cockpit 34. In the figure, reference numeral 36 denotes a spare seedling stage on which a seedling for replenishment is placed, and 37 is a side marker indicating the position of the outermost seedling planting strip.
[0010]
The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are rotatably attached to a link base frame 42 erected on the rear end of the main frame 15 on the base side, and a vertical link 43 is connected to the tip side thereof. The front end portion of the rolling shaft 46 protruding forward from the seedling planting portion 4 is connected to a connecting frame 44 provided integrally with the vertical link 43, and the seedling planting portion 4 is mounted so as to be able to roll in the traveling direction. An elevating hydraulic cylinder 48 is interposed between a support member fixed to the main frame 15 and a tip of a swing arm 47 formed integrally with the upper link 40, and the upper link is expanded and contracted by hydraulically extending the cylinder. 40 rotates up and down, and the seedling planting unit 4 and the ground work unit 5 are moved up and down while maintaining a substantially constant posture. The hydraulic cylinder 48 is controlled to expand and contract by a hydraulic valve 49 attached to the upper part of the link base frame 42.
[0011]
The seedling planting unit 4 has a six-row planting structure, a seedling planting unit transmission case 50 also serving as a frame, a total of six planting devices 60 for planting seedlings in the field topsoil,. A seedling mount 70 for supplying seedlings, four floats 80,... That slide on the farm scene as the machine progresses and level the farm scene before seedling planting.
[0012]
The seedling planting part transmission case 50 has the inner ends of the connection pipes 52 and 52 fixed to the left and right side surfaces of the seedling stage drive case 51 located in the left and right center part, and the left and right center part of the seedling stage drive case 51 A total of three planting transmission cases 53, 53, 53 are provided from the outer ends of the connecting pipes 52, 52 toward the rear. Then, the planting devices 60,... Are provided at the projecting portions of the planting drive shafts 54,.
[0013]
The planting device 60 includes a rotating case 61 connected to the planting drive shaft 54 and a pair of planting tools 62 and 62 attached to both ends of the rotating case. The planting tools 62 and 62 are rotated in the direction opposite to the rotation direction of the rotating case 61 by the transmission mechanism in the rotating case 61, and the seedling separating tools 62a and 62a provided on the planting tool operate while drawing a tip locus of a closed loop. . Thereby, the seedling separators 62a and 62a separate and hold the seedling supplied to a seedling inlet 76 of the seedling mount 70 described later, and plant it on the field topsoil surface.
[0014]
The seedling stage 70 is inclined so that the front side is higher, and is supported by rollers that are attached to the upper and lower ends of a support rail 71 that is long to the left and right and the seedling stage support frame 72 and is slidable to the left and right. ing. The seedling placing table 70 is partitioned into six seedling placing parts, and seedling feeding belts 75,... For feeding the seedlings downward are provided for each seedling placing part. Further, adjacent to the lower end of the seedling mount 70, a seedling receiving plate 77 in which seedling inlets 76,... Corresponding to the position of the planting device 60 are formed is provided integrally with the support rail 71. The seedling stage 70 is reciprocated left and right by the seedling stage driving mechanism provided in the seedling stage driving case 51, and the seedling feeding belts 75,. One stock is supplied to the seedling outlets 76,.
[0015]
There are a total of four floats 80,... Two floats 80A, 80A in the center leveling the center four planting strips PL2-5, and left and right outer floats 80B, 80B are the outermost planting. Appendices PL1, 6 are leveled. Each float 80,... Has a mounting plate 81 fixed to the rear upper surface pivotally attached to the rear end portion of the float support rod 82,... By a float mounting shaft 83,. Accordingly, the front part is provided so as to rotate up and down.
[0016]
The front two floats 80A and 80A are connected to each other by a connecting plate 84, and the movement of the top soil surface height sensing rod 85 provided upward from the connecting plate 84 is transmitted to the hydraulic valve 49. . For example, when the topsoil surface is raised and the front portions of the floats 80A and 80A are pushed up, the hydraulic valve 49 is switched to the side where the hydraulic cylinder 48 is extended, and the seedling planting unit 4 and the ground work unit 5 are raised. Conversely, when the topsoil surface is lowered and the front portions of the floats 80A and 80A sink, the hydraulic valve 49 switches to the side where the hydraulic cylinder 48 is contracted, and the seedling planting unit 4 and the ground working unit 5 are lowered. In this way, by raising and lowering the seedling planting unit 4 and the ground work unit 5 in accordance with the height change of the topsoil surface, the seedling planting depth and the ground work depth are always maintained constant. Note that a rake 87 is attached to the connecting plate 84 so that the topsoil surface located between the floats 80A and 80A is leveled during work.
[0017]
The ground work unit 5 is provided with a chain case 91 fixed at a position shifted to the left side from the left and right center of the ground work unit frame 90 arranged in the left and right direction, and the upper part thereof from the ground work unit transmission shaft 32. Power is input, and the ground work drive shaft 92 protrudes left and right from its lower end. In addition, bearings 93 and 93 for supporting the rotating shaft of the working device are suspended from the left and right ends of the ground working unit frame 90. The scraper rotor 100 or the tilling rotor 110 as a work device is mounted in a state where it is connected to the ground work drive shaft 92 by transmission. A cover 95 is attached to the ground working unit frame 90 so that mud and soil splashed backward by the scraper rotor 100 or the tilling rotor 110 are not applied to the floats 70.
[0018]
In the scraper rotor 100, a wheel plate 102 fixed to the rotating shaft 101 has a tip portion corrugated when viewed from the rotational tangential direction, and a corrugated portion slightly bent in the direction opposite to the rotational direction in a side view. The scratch plates 103 are attached radially. An end portion of the rotary shaft 101 is connected to the ground work drive shaft 92 via a coupling 104, and an intermediate portion of the rotary shaft 101 is rotatably supported by the bearing 93 and is attached to the ground work portion 5. . By rotating the scraping rotor 100, ... in a state where the tip of the scratching plate 103, ... is immersed in the surface layer portion of the field filled with water, the soil block of the surface layer portion is crushed and stirred with water. While making it mud, level the mud surface.
[0019]
Further, the tilling rotor 110 is radially attached with tilling claws 112 at intervals of 90 degrees at the positions of the rotation shaft 111 corresponding to the planting strips PL1 to PL6. Rollers 113,... For preventing wrapping of wrinkles and the like around the rotary shaft are fitted in a free-running state on the portion of the rotary shaft 100 where the tilling claws 112,. An end portion of the rotating shaft 111 is coupled to the ground work drive shaft 92 via a coupling 114, and an intermediate portion of the rotating shaft 111 is rotatably supported by the bearing 93 and is attached to the ground working portion 5. . When the tilling rotor 110 is rotated in a state where the lower tilling claws 112,... Are submerged in the topsoil part of the field that is not cultivated, the topsoil part precedes the seedling transplantation by the planting device 60,. Plow the necessary width for seedling transplanting.
[0020]
The ground work section 5 includes an upper link 122 and a lower link 123 that are connected at the rear end side to the bracket 120 fixed to the connection pipes 42, 42 and are connected at the front end side to the bracket 121 fixed to the ground work section frame 90. It is supported by the left and right parallel link mechanisms and is raised and lowered with respect to the seedling planting part 4 by the following lifting mechanism.
[0021]
The left and right support plates 126L and 126R are supported above the ground work unit frame 90 by the support frames 125 and 125 fixed to the seedling stage drive case 51. A lifting arm rotating shaft 127 in the left-right direction is rotatably supported by the support plates 126L and 126R, and the ground work unit frame 90 is suspended from the lifting arms 129L and 129R integrated with the shaft via the lifting rods 130L and 130R. It has been. The right elevating rod 130R can be adjusted in length, and the right / left inclination of the ground working unit 5 is adjusted by changing the length.
[0022]
A gear box 132 is attached to the right support plate 126R, and a plurality of gears for transmitting the rotation of the electric motor 133 for raising / lowering the ground working unit capable of forward and reverse rotation are housed therein. A pinion 134 attached to the output shaft of the motor 133 meshes with the first gear 135a of the dual counter gear 135, and the second gear 135b meshes with a fan-shaped gear 136 provided integrally with the lifting arm rotating shaft 127. Yes. The angle of the sector gear 136 is detected by a potentiometer 137.
[0023]
When the motor 133 is driven to rotate, the lifting arm rotation shaft 127 is rotated via the gear, and the ground working unit 5 is moved up and down. Since dampers 139 and 139 are provided between the lifting arms 129L and 129R and the planting transmission cases 53 and 53 on the left and right sides so as to rotate the lifting arms upwards, The working unit 5 can be raised. Since the motor 133 is provided in the vicinity of the center of the left and right of the ground work unit 5, the torsion of the lift arm rotation shaft 127 is substantially the same on the left and right, and the ground work unit 5 is lifted and lowered with a good balance. Further, by providing the motor 133 on the right side of the left and right center, the motor, gears, and the like are prevented from interfering with the chain case 91. Note that a hydraulic cylinder or the like may be used instead of the electric motor 133 as an actuator for raising and lowering the ground working unit.
[0024]
The left and right support plate 126L is provided with a vertical position support plate 140 that is vertically graduated. The gauge bar 141 is supported by the ground work unit frame 90 so that the pointer 141a is positioned near the front side of the vertical position support plate 140. By reading the scale of the vertical position support plate 140 indicated by the pointer portion 141a of the gauge rod 141 when viewed from the cockpit 34, the height of the ground working portion 5 relative to the seedling planting portion 4 can be grasped.
[0025]
The electric motor 133 for raising and lowering the ground working unit is controlled by a controller 143a built in a switch box 143 installed near the right side of the cockpit 34. The switch box 143 includes an elevating switch 144 that is an elevating operation tool that elevates and lowers the ground work unit to a work position and a non-work position, and ground work at the work position according to the type of work device attached to the ground work unit. A changeover switch 145 which is a changeover operation tool for changing the height of the part with respect to the seedling planting part and a fine adjustment dial 146 for finely adjusting the work position of the ground work part are provided. Information of these switches 144, 145, 146 and the potentiometer 137 is input to the controller 143a and output to the motor 133 based on the information.
[0026]
The working position and the non-working position of the ground working unit 5 are set in advance every time when the scraper rotor is attached and when the tilling rotor is attached. If the side where the ground work unit 5 descends is the forward direction of the motor 133 and the side where the ground work unit 5 ascends is the reverse direction of the motor 133, the changeover switch 145 is set to “pick” and the lift switch 144 is set to “work” ”, The motor 133 rotates in the forward direction so that the ground working unit descends to the working position when the machining rotor is mounted, and the changeover switch 145 is set to“ scraping ”and the lift switch 144 is set to“ non-working ”. Then, the motor 133 rotates in the reverse direction so that the ground work unit moves up to the non-working position when the scraper rotor is mounted, and the changeover switch 145 is set to “plow” and the lift switch 144 is set to “work”. The motor 133 rotates in the forward rotation direction so that the ground work unit descends to the work position when the tilling rotor is mounted, and the changeover switch 145 is set to “tillage” and lifted. Motor 133 as the ground working portion to the non-working position when wearing the plowing rotor when the switch 144 to the "non-working" is lowered to rotate in the reverse direction.
[0027]
Further, when the fine adjustment dial 146 is operated while the elevating switch 144 is operated to “work”, the ground work unit 5 is within a predetermined range according to the operation amount (about ± 20 mm from the initial set position). The motor 133 rotates in the forward and reverse directions so as to move up and down. Thereafter, even when the lift switch 144 is operated to “work”, the height of the work position adjusted by the ground work unit 5 using the fine adjustment dial 146 is obtained. When the height of the work position is adjusted with the fine adjustment dial 146, the height of the non-work position is also automatically adjusted.
[0028]
FIG. 10 shows a configuration in which the method for raising and lowering the ground work unit is different. The lift switch 150 provided in the switch box 143 is operated to “up” and “down” with “neutral” as a starting point, and automatically returns to “neutral” when the switch is released. When the elevating switch 150 is operated “up” for a predetermined time (for example, 2 seconds) or longer, the motor 133 rotates in the reverse direction until the ground working unit 5 is raised to the non-working position. When the elevating switch 150 is operated “down” for a predetermined time (for example, 2 seconds) or longer, the motor 133 rotates in the forward direction until the ground work unit 5 is lowered to the work position. When the up / down switch 150 is operated to “up” or “down” within a predetermined time, the motor 133 moves in the reverse rotation direction or the normal rotation direction only during the operation time from the non-working position to the bottom dead center of the liftable range. Rotate.
[0029]
【The invention's effect】
As described above, the seedling transplanting machine according to the present invention includes a lifting operation tool for moving the ground working unit up and down to a working position and a non-working position, and a work position according to the type of work device attached to the ground working unit. The switching operation tool for switching the height of the ground work section relative to the seedling planting section and the fine adjustment dial for finely adjusting the work position of the ground work section are provided, so the type of work device to be mounted on the ground work section It is now possible to easily change the work position of the ground work unit according to the situation. Also, the chain case of the ground work section is provided at a position shifted to the left from the left and right center of the ground work section frame, and the actuator for raising and lowering the ground work section is provided on the right side of the left and right center. Interference is now prevented.
[Brief description of the drawings]
FIG. 1 is a side view of a seedling transplanter.
FIG. 2 is a plan view of a seedling transplanter.
FIG. 3 is a plan view in which a part of a traveling vehicle body is omitted.
FIG. 4 is a side view of a ground working unit and a seedling planting unit.
FIG. 5 is a plan view in which a ground working unit and a part of a seedling planting unit are shown in a state where a substitute rotor is mounted.
FIG. 6 is a plan view of a tilling rotor.
FIG. 7 is a plan view of a ground working unit lifting mechanism.
8A is a side view of a switch box, and FIG. 8B is a perspective view of a fine adjustment dial.
FIG. 9 is a block diagram of the ground working unit lifting device.
FIG. 10 is a side view of a different switch box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 3 Elevating / lowering link device 4 Seedling planting unit 5 Ground working unit 100 Submerged rotor (working device)
110 Tillage rotor (working device)
133 Electric motor 143a for raising / lowering ground work unit Controller 144 Lift switch (lifting operation tool)
145 changeover switch (switching operation tool)
146 Fine adjustment dial

Claims (1)

A seedling planting part (4) is provided so as to be able to move up and down relative to the traveling vehicle body, and a ground work part (5) is provided so as to be able to be raised and lowered relative to the seedling planting part. In the seedling transplanting machine that can be selected and mounted, the ground work section is provided with a chain case (91) at a position shifted to the left from the left and right center of the ground work section frame (90) arranged in the left and right direction of the machine body. And is supported by a right and left link mechanism from the seedling planting part, and is configured to move up and down by driving an actuator (133) for raising and lowering the ground work part provided on the right side of the left and right center. The lifting / lowering operation tool (144) for moving the robot up and down between the working position and the non-working position, and switching the height of the ground working unit with respect to the seedling planting unit at the working position according to the type of the working device attached to the ground working unit switching And Sakugu (145), the ground working portion of the working position fine adjustment dial which can be finely adjusted and (146) are provided, said lifting operation member is a neutral position can be operated in the upper position and a lower position as a starting point and release the It is configured to automatically return to the neutral position, and when the upper position is operated for a predetermined time or more, the ground work section is raised to the non-work position, and when the lower position is operated for a predetermined time or more, the ground work section is lowered to the work position, A seedling transplanter configured to move up and down only during an operation time when operated to an upper position or a lower position within a predetermined time .

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