JP4853280B2 - Agricultural machine - Google Patents

Description

  The present invention relates to agricultural machines such as tractors and rice transplanters.

As shown in Japanese Patent Application Laid-Open No. H10-228867, the grip portion of the speed change lever includes an up / down button that switches the working unit between rising and stopping each time it is pressed, and a down button that switches between lowering and lowering each time it is pressed. In addition, a lowering button dedicated to lowering is provided separately from the lowering button.
JP 2002-153107 A

  The problem of the present invention is that the conventional lowering switch dedicated to lowering can be used also as a raising switch, so that the planting work can be performed while raising the planting part at the time of crossing the heel, The work will be facilitated and the planting work area on the headland will be expanded.

In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the present invention, the working unit (10) is provided so as to be movable up and down with respect to the traveling vehicle body (1), and the working unit is provided so as to have a predetermined ground height based on the detection result of the ground sensor (25). Ascending / descending control is possible, and the ascending operation means (23U) for raising the working unit (10) to the ground floating position, the descending operation means (23D) for lowering to the ground contact position, and the operation from the state of floating above the ground. An arbitrary lowering operation means (24) for lowering only during the operation and a driving on / off means (16) for turning on / off the driving of the working part are provided, and the lowering is arbitrarily performed in the working part driving state by the driving on / off means (16). When the operation means (24) is operated, a control means (A) that rises only while the operation means is operated is provided.

  The working unit (10) is automatically lifted and lowered by the ground sensor (25) so as to have a predetermined ground height. The working part can be raised to the ground floating position by operating the ascending operation means (23U), or the working part can be lowered to the position where it is grounded by operating the descending operating means (23D).

  The arbitrary lowering operation means (24) can be arbitrarily lowered to a position where it is brought into contact with the work unit from the state where the working unit is floating on the ground by this lowering operation. Further, when the arbitrary lowering operation means (24) is operated when the working section is driven by the operation of the driving on / off means for turning on / off the working section, the working section is arbitrarily lifted and controlled only during the operation. Can do. Therefore, when you leave the field while planting (when crossing the ridge), you can use this optional lowering operation means to gradually plant the planting part that sinks when you cross the ridge, The range of planting work on the ground is expanded, and rational use of the operating means can be achieved.

  According to the first aspect of the present invention, when the operation unit is in a driving state by operating the driving on / off means for turning on / off the driving of the working unit, if the arbitrary lowering operation unit is operated, the operation is performed only during the operation. Since this part can be controlled arbitrarily, the planting operation can be performed while gradually raising the planting part that sinks when crossing the reed when using this optional lowering operation means when crossing the reed while performing the replanting operation. This makes it possible to greatly expand the planting work area in the headland and rationalize the operation means.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a riding type rice transplanter equipped with a fertilizer device as an example of a traveling vehicle. An engine E as a drive source is mounted in the approximate center of the vehicle body 1, and the rotational power of the engine E is shown. Is transmitted to the transmission in the mission case 2, and the rotational power decelerated by the transmission is transmitted to the front wheels 4 and the rear wheels 5. A driver's seat 6 is installed above the engine E, a steering handle 7 for steering the operation box 3 and the front wheels 4 and 4 is provided in front of the driver's seat 6, and a working portion (10 The seedling planting part is mounted via a lifting link mechanism 9, and a hydraulic lifting cylinder 11 is installed between the seedling planting part 10 and the vehicle body 1 to raise and lower the seedling planting part.

  In this example, the seedling planting unit 10 has an eight-row planting structure, a seedling tank 12 on which a mat-like seedling with soil is placed on a seedling mounting surface divided into a number of planting stripes, and a seedling tank It consists of a planting device 13 for planting the upper seedlings in the field, and a float 14 that slides on the farm scene to level the ground. Or move down to the ground work position (ground planting position). Power transmission to the seedling planting unit 10 is performed from the engine E through the PTO shaft 15 and through a PTO (planting) clutch 16 that turns on and off the transmission of the PTO shaft 15.

The vehicle 1 travels by driving the front wheels 4, 4 and the rear wheels 5, 5 through the main transmission and auxiliary transmission of an HST (hydraulic continuously variable transmission) 17 by driving the engine E. .
The HST 17 is speed-changed by a speed change lever 18 installed on the right side of the driver's seat 6. By operating the shift lever 18 from the neutral position to the front side, the forward high speed state is set, and by operating the shift lever 18 from the neutral position to the rear side, the reverse high speed state is set. Can be controlled. The auxiliary transmission lever 19 is provided on the side of the operation box 3.

  The lift control valve 20 of the hydraulic circuit that extends and contracts the hydraulic lift cylinder 11 and the PTO clutch 16 are linked by an actuator 21 such as an electric motor 21M or a stepping motor via an operation drive mechanism not shown). The operation drive mechanism is configured to drive the elevating control valve 20 and the PTO clutch 16 and also to drive the elevating lever 8 for manual operation on the side of the driver's seat 6. The actuator 21 is actuated by the output from the controller 22 by ON / OFF operations of elevating switches 23U and 23D described later provided in the grip portion of the speed change lever 18. The grip portion of the speed change lever 18 is provided with an up switch 23U as an up operation means for raising the seedling planting portion 10 to the ground floating position, and a down switch 23D as a down operation means for lowering to the grounding position. A series of operations covering the raising and lowering of the planting unit 10 and work transmission are grasped from the grip unit so that the hand is not changed, or the raising and lowering operation and the planting transmission operation can be performed while performing a shifting operation.

  The grip portion of the speed change lever 18 is provided with an optional lowering work switch 24 as an optional lowering operation means different from the up / down switches 23U and 23D. The arbitrary lowering work switch 24 is operated by this arbitrary lowering operation. It can be arbitrarily lowered to a position where it comes into contact only during operation from the state where the part floats to the ground, and by operating a driving on / off means for turning on / off the planting part 10, for example, a center float When the seedling planting part 10 is lowered to a certain work position by the detection of the grounding sensor 25 by the upper and lower sides of 14c, the PTO clutch 16 is actuated to perform the seedling planting work, and such When in the seedling planting operation state with the planting part driving state, if the arbitrary lowering work switch 24 is operated, the planting part is arbitrarily controlled to be raised only during the operation. Control means A is provided with a control program form the controller 22 which can and. At the time of planting work on the headland, the planting part is lowered and the planting work is performed in the planting part driving state. When the planting operation is being carried out and the vine is moved over to the edge of the field, the operation of the optional lowering operation switch 24 causes the rear planting unit to descend and sink due to the front rising of the front of the vehicle body when the culling is over. Planting work can be done while gradually raising.

  If the arbitrary lowering work switch 24 is configured to increase by a specified amount each time it is pressed regardless of the operating time (pressing time) during the arbitrary upward control, there is no excessive increase. And there is no need to worry about planting in the air if it rises too much. It is also possible to change the amount of increase in increments of the specified amount with a microcomputer checker.

  In FIG. 5, on the input side of the controller 22, there is a lift link sensor 26 that detects the lift position of the lift link mechanism 9 (the PTO shaft is cut by the detection result of the sensor), and an operation drive mechanism for the PTO clutch. Is provided with an actuator sensor 27.

  Next, the embodiment shown in FIGS. 6 to 7 will be described. The drawing marker includes a watermill marker 30 that is advantageous in a field with a lot of water and a bifurcated marker 31 that is advantageous in a field with a little water. The markers are attached to both ends of the support arm 32, and are pivotally supported so as to be rotatable and fixed around a horizontal attachment shaft 33. Then, the knob 34 is loosened and rotated 180 degrees to selectively switch between the use of the turbine marker and the use of the bifurcated marker. Moreover, as shown in FIG. 8, it is good also as a structure which switches and changes to use of a waterwheel marker and use of a bifurcated marker by attachment / detachment of the waterwheel marker 30. FIG. That is, the turbine marker 30 and the forked marker 31 are arranged side by side on the mounting shaft 33, and both are sandwiched and attached by the plate 35 and the knob 34. When the turbine marker 30 is removed, the forked marker 31 is grounded and drawn. When the water wheel marker 30 is attached, the water wheel marker 30 is grounded and rotated for drawing.

  A visor 36 that covers the upper part of the operating unit, is configured to be movable up and down with respect to the vehicle body and capable of autolift via an autolift mechanism 37, and is planted as shown in the flowchart of FIG. Check the condition and check if the seedling has run out with the planting clutch. When the seedling is out, the visor 36 is automatically lifted based on the seedling out detection result. As a result, the operator can easily stand up and replenish seedlings. Similarly, even when the fertilizer application unit 38 is out of fertilizer (see FIG. 10), the operator stands up and replenishes the fertilizer, so that the fertilizer replenishment work can be easily performed by the visor autolift.

  The auxiliary seedling frames 40, 40 arranged on the left and right sides of the vehicle body can be switched between a normal standing posture and a laterally inclined posture as shown in FIGS. It is configured. The auxiliary seedling frame 40 includes several stages of receiving frames 41 on which a seedling box is placed and a support column 42 that supports them. The support column 42 can be rotated about the axis Q in the front-rear direction, and the damper 43 can be expanded and contracted. It is configured to undulate by operation, and when the support column 42 stands up (FIG. 11 (a) state), the receiving frame 41 tilts so that the outer end side becomes higher, and when the support column tilts (FIG. 11 (b) state). The receiving frame 41 is configured to be substantially horizontal. Since the auxiliary seedling frame can be tilted to the outside of the machine body, it is easy to replenish seedlings when the machine body is placed on the heel. In addition, since the receiving frame at the time of standing normally has an upward inclination, the horizontal state is maintained and the seedling box does not fall down even if the receiving frame is inclined outward.

  In addition, as shown in FIG. 12, in the auxiliary seedling frames 40, 40 arranged on the left and right sides, the multi-stage receiving frames 41a, 41b, 41c can be tilted around the horizontal axis P at the upper end of the column 42. When the link 44 is tilted forward or backward, the receiving frames 41a, 41b, 41c are arranged in a straight line in the front-rear direction, and the seedling can be fed along the upper surface of the continuous receiving frame. Yes. Further, the receiving frames connected in a continuous manner can be moved in the front-rear direction along the rail 45 as necessary. Furthermore, the link 44 can be tilted in the left-right direction, and the receiving frames 41a, 41b, 41c can be made continuous in the horizontal direction on the left and right end sides. In addition, when each receiving frame is connected continuously, the seedling stopper 46 provided at the end of the receiving frame 41a and urged by the spring 47 is pressed and automatically released by the receiving frame 41b overlapping therewith. It has become.

  In FIG. 1 and FIG. 12, direction indicators (winker lamps) 48 and 48 are provided on both the left and right sides of the seedling tank 12, a winker switch 49 is provided near the steering handle, and a work is provided near the driver's seat. A light switch 50 is provided. In addition to driving on the road, turn signal lamps that are not used can be used as work lights during field work. For example, when used as a work lamp, the lens color can be switched from yellow to white by rotating the blinker lamp 48, and simultaneously from blinking to lighting.

  In addition, as shown in FIG. 12, the herbicide spraying device 51 is disposed in the lower part of the seedling tank 12 in order to prevent waste of spraying and doubling. The herbicide spraying device 51 has a configuration in which the spray pipe 53 and the feed spiral 54 that receive the medicine from the tank 52 are flexible and can be bent freely, and the spray pipe 53 is transparent. The herbicide spraying device 51 can be configured to spray the herbicide on the seedlings on the seedling tank 12 above the seedling tank 12. At this time, since the herbicide spraying device 51 is small, the herbicide spraying device 51 can be arranged at a position near the lower portion of the seedling mounting tank 12 where the seedlings remain even if the seedlings on the seedling mounting tank 12 are reduced, and weeding is appropriately performed on the seedlings. Can spray the agent.

Side view of rice transplanter Same as above Front view and side view of transmission lever Transmission path block diagram Operation control block diagram Front view of the main part of the drawing marker device Side view of the main part The principal part front view of the drawing marker apparatus of another Example Flow chart of visor autolift when seedling is out Auto-lift flowchart when running out of fertilizer (I) Rear view and (b) Rear view of auxiliary seedling frame Side view of rice transplanter Side view of the main part Side view of the main part Rear view of drug sprayer

Explanation of symbols

1 Car body 10 Working part (seed planting part)
16 PTO clutch 18 Shift lever 20 Controller
23U ascent switch 23D descend switch 24 arbitrarily descending work switch 25 grounding sensor A arbitrarily ascending control means

Claims (1)

  The working unit (10) is provided so as to be able to move up and down with respect to the traveling vehicle body (1), and the working unit is configured to be controlled to be raised and lowered based on the detection result of the ground sensor (25). ) To the ground floating position, ascending operation means (23D) for lowering to the ground contact position, and arbitrary lowering operation means (23D) for lowering only while operating from the ground floating position ( 24) and a drive on / off means (16) for turning on / off the drive of the working part, and when the arbitrary lowering operating means (24) is operated in the working part driven state by the drive on / off means (16), A farm working machine characterized in that a control means (A) is provided that rises only during the period.

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