JP4073807B2 - Transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of transplanting machines such as a riding rice transplanter, and particularly relates to a transplanting machine provided with an operating lever that is also used as a lifting operation tool (planting clutch operating tool) and a marker operating tool for a planting part.
[0002]
[Prior art]
Generally, a transplanter such as a riding rice transplanter is provided with a marker that draws a running reference line in the next stroke in order to maintain an appropriate distance between seedlings. This type of marker is usually provided on both the left and right sides of the planting part, and not only is the retracting and swinging operation performed automatically as the planting part moves up and down, but every time the planting part moves up and down. The marker to be shaken is configured to be switched alternately left and right (auto marker function).
[0003]
In addition, in recent years, a marker start setting function that changes the direction of auto marker output, a two-sided output function that outputs both left and right markers, and an auto marker stop function that stops marker output by an auto marker have been added. A transplanter has been proposed in which the operation of the marker can be set finely according to the above (for example, see Patent Document 1).
[0004]
Furthermore, in recent years, like the transplanter shown in Patent Document 1, an operation lever that can be operated in the vertical direction and the front-rear direction is provided in the vicinity of the steering of the driving operation unit, and the operation lever is moved up and down in the planting unit. It has been proposed to be used as a tool (planting clutch operating tool) and a marker operating tool.
[0005]
[Patent Document 1]
JP 2000-125613 A (page 4, FIG. 2)
[0006]
[Problems to be solved by the invention]
However, in the transplanter shown in Patent Document 1, when the operation lever is operated in one of the front and rear directions, the operation mode is switched to the auto marker mode, and each time the operation lever is operated, the auto marker ejection direction is switched. Each time the control lever is operated to the other side in the front-rear direction, the two-side swing mode and auto marker stop mode are switched in sequence, which complicates the operation method of the control lever and reduces the marker operability. There is a possibility of lowering.
[0007]
[Means for Solving the Problems]
The present invention has been created in order to solve these problems in view of the above circumstances, and includes a traveling machine body having a driving operation unit and a plant connected to the rear part of the traveling machine body so as to be movable up and down. A planting part, an elevating actuator for moving the planting part up and down, a planting clutch for turning on / off the power supply to the planting part, and being stored as the planting part is raised, In the transplanter provided with a pair of left and right markers that are selectively shaken as the attachment portion is lowered, and auto marker means that alternately draws out the left and right markers in accordance with the lifting and lowering operation of the implantation portion, the operation an operation lever provided in the operation portion is operable in the longitudinal direction, while the one on the left marker drawing board set position in the longitudinal direction, and a right marker square one set position to the other in the longitudinal direction, the automatic marker means the left or right When the operation lever is operated to the marker start setting position on the opposite side after swinging out the marker, the marker on the opposite side is also swinged out. Further, separately from the operation lever, the auto marker means after Rutotomoni provided an auto marker stop operation device for stopping the drawing board marker, the automatic marker means is swung to the left or right of the marker, the operating lever is operated to the marker drawing board set position on the opposite side within a predetermined time When the operation lever is operated outside the predetermined time , the transplanter is set so as not to swing out the marker .
That is, in the auto marker stop operating tool provided separately from the operation lever, the marker operation by the auto marker means is stopped, so that the marker operation at the operation lever can be simplified and the operability of the marker can be improved. Also, when swinging out the left and right markers, the auto marker means swings out either the left or right marker , and then the operation lever can be operated to the opposite side within a predetermined time. Marker can be shaken out. Furthermore, even if the operation lever is mistakenly operated during planting work outside the predetermined time , the marker is not shaken out.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of a riding rice transplanter, and a planting part 3 is connected to a rear portion of the traveling machine body 1 via an elevating link mechanism 2. A lift cylinder (elevating actuator) 4 is interposed between the traveling machine body 1 and the elevating link 2, and the elevating operation of the planting unit 3 is performed based on the expansion and contraction.
[0009]
The traveling machine body 1 is provided with a lift cam 6 connected to a lift cylinder hydraulic valve 5 and a planting clutch mechanism (not shown). The lift cam 6 has four positions of “raising”, “fixing”, “lowering”, and “planting”, and the position is switched by the lift cam motor 7. In the “raised” position, the lift cylinder hydraulic valve 5 is raised and the planting clutch mechanism is disengaged. In the “fixed” position, the lift cylinder hydraulic valve 5 is deactivated and the planting clutch mechanism is disengaged. In the “lowering” position, the lift cylinder hydraulic valve 5 is in the lowered state (automatic lifting control by sensing float), and the planting clutch mechanism is in the disengaged state. In the “planting” position, the lift cylinder hydraulic valve 5 is in the lowered state ( The automatic lifting control state by the sensing float), the planting clutch mechanism is turned on.
[0010]
On the left and right sides of the planting part 3, markers 8L and 8R are provided for drawing a running reference line in the next or previous stroke. Each of the markers 8L and 8R is configured to be freely rotatable and deformed into a drawing posture that is swung out to the left and right sides and a retracted posture that stands up along the side of the planting unit 3, and is swung out by a spring 9. Is biased in the direction. On the other hand, the traveling machine body 1 is provided with a pair of left and right marker operation arms 10L and 10R, and the marker operation arms 10L and 10R are respectively connected to the base ends of the markers 8L and 8R via the wires 11L and 11R. It is connected. When the marker operating arms 10L and 10R are rotated forward, the wires 11L and 11R are pulled and the markers 8L and 8R are retracted. On the other hand, when the marker operating arms 10L and 10R are rotated rearward, the wires 11L and 11R is loosened, and the swing-out operation of the markers 8L and 8R is allowed.
[0011]
A roller arm 14 including a roller 13 is further provided on the plate 12 that supports the marker operation arms 10L and 10R so as to be rotatable forward and backward. The roller arm 14 is connected to the base end portion of the elevating link mechanism 2 via a rod 15, and is rotated back and forth according to the elevating operation of the elevating link mechanism 2. When the roller arm 14 rotates forward as the elevating link mechanism 2 is raised, the roller arm 14 pushes the left and right marker operation arms 10L and 10R forward via the roller 13, while the elevating link mechanism 2 is lowered. When rotating backward, the left and right marker operating arms 10L, 10R are allowed to rotate backward. Thereby, according to the raising / lowering of the planting part 3, the storing operation | movement of the markers 8L and 8R and the swing-out operation | movement are performed automatically.
[0012]
A pair of left and right stopper arms 16L and 16R are provided on the front side of the marker operating arms 10L and 10R. Each of the stopper arms 16L and 16R is configured to be rotatable forward and backward with the support shaft 17 as a fulcrum, and is urged rearward by springs 18L and 18R. Each stopper arm 16L, 16R is pushed back by the pin 10a of the marker operating arms 10L, 10R when the marker operating arms 10L, 10R are rotated forward, and is then rotated backward to the rear. Then, the marker operating arms 10L and 10R are engaged. In this state, since the rotation of the marker operating arms 10L and 10R is locked, even if the planting part 3 is lowered, the swinging of the markers 8L and 8R is restricted.
[0013]
Further, a marker switching arm 19 is provided in front of the stopper arms 16L and 16R. The marker switching arm 19 is a seesaw-like member that faces in the left-right direction and swings back and forth about the central support shaft 20, and rods 21L and 21R connected to stopper arms 16L and 16R at both ends thereof. Are interchangeably connected. That is, when the marker switching arm 19 is in the neutral posture, the stopper arms 16L and 16R are allowed to rotate back and forth, so that the stopper arms 16L and 16R regulate the swinging of the markers 8L and 8R, while the marker switching arm 19 Is tilted to the left or right, one stopper arm 16L, 16R is pulled forward via the rods 21L, 21R, and the one marker 8L, 8R is allowed to swing out. Thereby, by the operation of the marker switching arm 19, it is possible to selectively swing out the left and right markers 8L and 8R or to restrict the swinging out of both the markers 8L and 8R.
[0014]
A marker motor 22 is linked to the marker switching arm 19, and the posture of the marker switching arm 19 is controlled based on the driving of the marker motor 22. The marker motor 22 selectively operates the marker switching arm 19 to the left / right swing-out restricting position, the left marker swing-out position, and the right marker swing-out position, but as the planting unit 3 is lowered, one marker 8L, After the 8R is swung out, the marker switching arm 19 is moved to the other swinging position, so that the both-side swinging state in which the left and right markers 8L and 8R are swung out can be revealed.
[0015]
The upper portion (driving operation unit) of the traveling machine body 1 includes a driver seat 23 on which an operator sits, a lift lever 24 provided on one side of the driver seat 23, a front operation panel 25 provided in front of the driver seat 23, and the front operation. A steering wheel 26 protruding from the panel 25, a hand operating lever (operating lever) 27 protruding from one side of the column of the steering wheel 26, a planting switch 28 and an auto marker stop switch provided on the front operating panel 25 (Auto marker stop operation tool) 29 and the like. The lift lever 24, the hand operating lever 27, the planting switch 28, and the auto marker stop switch 29 are electrically connected to the control unit 30 and have the following functions based on the control operation of the control unit 30 described later. To do.
[0016]
The lift lever 24 has four operation positions of “raising”, “fixing”, “lowering”, and “planting”. When the lift lever 24 is operated at each position, the above-described lift cam 6 corresponds to the position. Can be switched to. Thereby, the raising / lowering operation of the planting part 3 by the lift lever 24 and the on / off operation of the planting clutch mechanism can be performed.
[0017]
The hand control lever 27 can be operated in the vertical direction and the front-rear direction. Based on the operation in the vertical direction, the planting unit 3 can be moved up and down and the planting clutch mechanism can be turned on and off. Based on the operation of the direction, it is possible to set the markers 8L and 8R to swing out. However, the function of the hand control lever 27 is switched according to the on / off state of the planting switch 28. When the planting switch 28 is in the cut state, only the lifting operation of the planting unit 3 is allowed. That is, if the hand operating lever 27 is operated upward, the planting unit 3 is raised, and if operated, the planting unit 3 is lowered. In addition, when the hand operating lever 27 is operated downward while the planting unit 3 is raised, or when the hand operating lever 27 is operated upward while the planting unit 3 is being lowered, the planting unit 3 is moved up and down. Stopped.
[0018]
On the other hand, when the planting switch 28 is in the on state, the hand operation lever 27 allows the planting unit 3 to be raised and lowered, the planting clutch mechanism on / off operation, and the marker 8L and 8R swing-out setting operations. First, the raising / lowering operation of the planting part 3 by the hand operation lever 27 and the on / off operation of the planting clutch mechanism will be described. The operation pattern of the hand operating lever 27 in this state corresponds to the positions “raising”, “lowering”, and “planting” of the lift cam 6 described above, and every time the hand operating lever 27 is operated upward ( ("Planting"->"down"->"raising") sequentially, and conversely, every time the hand control lever 27 is operated downward, it moves sequentially in the downward direction ("up"->"down"->"planting") To do. Further, when the hand operating lever 27 is operated in the reverse direction during the raising / lowering operation of the planting unit 3, a “fixed” state is obtained. Thereby, the raising / lowering operation of the planting part 3 by the hand operation lever 27 and the on / off operation of the planting clutch mechanism can be performed.
[0019]
Next, an operation for setting out the markers 8L and 8R by the hand operation lever 27 will be described. When the planting switch 28 is turned on and operated, an auto marker function described later is turned on. In this state, each time the raising operation of the planting unit 3 is performed, the markers 8L and 8R to be shaken are automatically switched alternately. In addition, when the auto marker stop switch 29 is operated in this state, the auto marker function is turned off, and the automatic swinging operation of the markers 8L and 8R is stopped. Therefore, the operation functions of the markers 8L and 8R required for the hand operating lever 27 are a marker swing setting function for setting the swing direction of the markers 8L and 8R and a double swing operation function for swinging the left and right markers 8L and 8R. is there.
[0020]
The swing-out setting of the markers 8L and 8R is allowed only when the planting unit 3 is at the highest position. If the hand operating lever 27 is operated forward in this state, the left marker 8L is swung out when the next planting portion is lowered, and conversely, if the hand operating lever 27 is operated backward, the right marker 8L is moved when the next planting portion is lowered. The marker 8L is shaken out. The operation of swinging out both the left and right markers 8L and 8R can be performed within a predetermined time after one of the markers 8L and 8R is swung out as the planting unit 3 is lowered. That is, after either the left or right marker 8L or 8R is swung out, the opposite marker 8L or 8R is swung out by operating the hand operating lever 27 to the opposite marker swing setting position.
[0021]
In addition, when the planting clutch mechanism is engaged and operated after the markers 8L and 8R on both the left and right sides are swung out and before the next planting section is lifted, the previous planting section is While swinging out the marker that was swung out later at the time of descending, after swinging out the markers 8L and 8R on both the left and right sides, the planting clutch mechanism was not entered and operated until the next planting section ascending, When the planting part is lowered at the next time, the markers 8L and 8R previously shaken out at the time of the previous planting part descending are shaken out. Hereinafter, specific operations and operations of the markers 8L and 8R will be described with reference to FIG.
[0022]
In FIG. 12, it shall plant by the following procedures.
1) First, run the process (A) for last planting. At this time, planting is not performed, and a travel reference line is drawn in the next stroke (B) (left marker swing).
2) Start planting from the next step (B). At this time, a traveling reference line is drawn in the process (A) and the next process (C) for surrounding planting (left and right marker swing out).
3) From the subsequent strokes (after C), the running reference line is drawn only for the next stroke (left marker swinging, and then swinging alternately left and right).
[0023]
When planting in the above procedure, the right marker 8R is swung out by the auto marker function at the start of the stroke (B). After the right marker 8R is swung out, the hand control lever 27 is operated forward, and the left marker 8L is swung out. When the planting unit 3 is raised at the end of the stroke (B), the left and right markers 8L and 8R are stored, and in the next stroke (C), only the left marker 8L is automatically extracted by the auto marker function. It will be.
[0024]
When planting according to the above procedure, the planting unit 3 may be lowered at the end of the step (B) in which the markers 8L and 8R on both sides are swung to perform seedling on the seedling stage. At this time, in the past, it was mistakenly recognized that the planting part was raised and lowered due to the turning of the aircraft, and the auto marker function would switch the swinging direction of the markers 8L and 8R, so the planting part at the beginning of the next step (C). When 3 is lowered, the swing-out direction of the markers 8L and 8R is switched again, and the right-hand marker 8R is swung out. However, as described above, in the present embodiment, the planting unit that does not involve the operation of the planting clutch mechanism During the up-and-down operation, the auto marker function does not switch the swing-out direction, so that it is possible to swing out the markers 8L and 8R in appropriate directions.
[0025]
Next, the configuration and operation of the control unit 30 will be described. The control unit 30 is configured using a microcomputer, and on the input side, in addition to the planting switch 28 and the auto marker stop switch 29 described above, a lift angle sensor 31 that detects the raising / lowering position of the planting unit 3, and the lift cam 6. A lift cam sensor 32 for detecting the position of the lift lever 24, a lift lever sensor 33 for detecting the operation position of the lift lever 24, four switches 34 to 37 for detecting the up / down and front / back operation of the hand operation lever 27, and the like are connected. Further, the lift cam motor 7 and the marker motor 22 described above are connected to the output side of the control unit 30. And the control part 30 performs hydraulic pressure raising / lowering control, marker mode control, etc. according to the program previously stored in ROM. Hereinafter, the control procedure of hydraulic lifting control and marker mode control will be described with reference to flowcharts. However, the hydraulic lifting control is for realizing the planting lifting / lowering operation and the planting clutch operation by the hand operating lever 27 described above, and uses the same control method as the conventional one, so only the flowchart is shown. The description is omitted.
[0026]
In the marker mode control, three flags “auto marker flag”, “marker mode (flag)”, “planting clutch flag”, and one timer “double drop operation timer” are used. The auto marker flag is for determining ON / OFF of the auto marker function, and the marker mode flag is for determining the marker projection direction. The planting clutch flag is used to determine the planting clutch operation, and ON / OFF is set by an external routine. Further, the double drop operation timer is a subtraction timer that determines the double-side swing operation time after the planting unit descends.
[0027]
In the marker mode control, first, it is determined whether the planting switch 28 is ON / OFF. If the determination result is ON, it is determined whether the planting unit is in the descending operation state. If the determination result is NO, after setting the double drop operation timer, it is determined whether or not the planting unit 3 is at the highest position. If the determination result is YES, normal marker operation by the hand operating lever 27 is determined. Is acceptable. In this state, the state of the auto marker flag is determined (initially ON), and when the determination result is automatic, it is determined whether the planting clutch flag is ON / OFF. When the planting clutch flag is ON, it is determined that the planting part has been lifted and lowered with the planting clutch operation, and the marker mode flag swinging direction is reversed. However, when the marker mode flag is in the reset state (initial state), the marker projection direction is the right side. In this way, by determining whether or not the planting clutch operation is performed when reversing the marker ejection direction, the problem that the marker ejection direction is unnecessarily switched when the planting unit is lifted and lowered without the planting clutch operation is solved. .
[0028]
Thereafter, the planting clutch flag is reset, and the front / rear operation of the hand control lever 27 is determined. If it is determined that there is an operation, the marker start direction is set in the marker mode flag according to the operation direction, and the auto marker flag is turned ON. That is, when the swing marker setting operation is performed with the hand operating lever 27 when the auto marker function is OFF, the auto marker function is switched ON. Thereafter, the operation of the auto marker stop switch 29 is determined. If it is determined that there is an operation, the auto marker flag is inverted. That is, since the auto marker function OFF operation is not performed by the hand operation lever 27 but by the auto marker stop switch 29, the marker operation by the hand operation lever 27 is simplified.
[0029]
On the other hand, when the planting switch 28 is ON and the planting unit 3 descends, the timer value of the both-falling operation timer is referred to, and when this is other than 0 (within a predetermined time after descending) (≠ 0), The operation of the hand control lever 27 is determined. When the hand operating lever 27 is operated so as to swing out the markers 8L and 8R opposite to the markers 8L and 8R swinged out by the auto marker function, a marker mode flag for swinging out the markers 8L and 8R. Set to both sides. On the other hand, as shown in FIG. 11, when the double drop operation timer is 0 (“= 0”: outside a predetermined time after the descent), the marker 8L and 8R are not drawn out.
[0030]
In the configuration as described above, a traveling machine body 1 having a driving operation part, a planting part 3 connected to a rear part of the traveling machine body 1 so as to be movable up and down, and a lift cylinder 4 for moving the planting part 3 up and down. And a planting clutch mechanism for turning on / off the power supply to the planting unit 3, and storing as the planting unit 3 rises, and selectively swinging out as the planting unit 3 descends. An auto marker function (control unit 30) that alternately swings out the left and right markers 8L and 8R according to the vertical movement of the pair of left and right markers 8L and 8R and the planting unit 3, and the upper and lower This is a riding rice transplanter equipped with a hand operating lever 27 for raising and lowering the planting part 3 and engaging / disengaging the planting clutch based on the operation of the direction. The hand operating lever 27 can be operated in the front-rear direction. One of the directions is the left marker start setting position On the other hand, when the other marker in the front-rear direction is set to the right marker start setting position and the auto marker function swings out the left or right marker 8L or 8R, the hand operating lever 27 is operated to the opposite marker start setting position. Since the opposite markers 8L and 8R are also swung out, and an auto marker stop switch 29 is provided separately from the hand operation lever 27 to stop the movement of the markers 8L and 8R by the auto marker function. The marker operation on the lever 27 can be simplified and the operability can be improved. In addition, when the left and right markers 8L and 8R are swung out, it is only necessary to operate the hand operating lever 27 to the opposite side after the auto marker function has swung out either the left or right marker 8L or 8R. The left and right markers 8L and 8R can be shaken out.
[0031]
Also, after the auto marker function swings out the left or right marker 8L, 8R, when the hand operating lever 27 is operated to the opposite marker start setting position within a predetermined time, the opposite marker 8L, 8R is pulled out. When the both-drop operation state is reached and the both-drop operation timer is out of the predetermined time of 0 , the markers 8L and 8R are swung out even if the hand control lever 27 is mistakenly operated during the planting operation. There is no.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter.
FIG. 2 is a plan view of a riding rice transplanter.
FIG. 3 is a side view showing a lift cam.
FIG. 4 is a plan view showing a marker.
FIG. 5 is a side view showing a marker switching unit.
FIG. 6 is a plan view showing a marker switching unit.
FIG. 7 is a plan view of a main part of the front operation panel unit.
FIGS. 8A and 8B are explanatory views showing operation patterns of the hand control lever. FIGS.
FIG. 9 is a block diagram showing input / output of a control unit.
FIG. 10 is a flowchart of hydraulic lifting control.
FIG. 11 is a flowchart of marker mode control.
FIG. 12 is an explanatory diagram showing an example of planting work.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Planting part 4 Lift cylinder 8L Marker 8R Marker 22 Marker motor 23 Driver's seat 24 Lift lever 27 Hand operating lever 28 Planting switch 29 Auto marker stop switch 30 Control part

Claims (1)

A traveling machine body having a driving operation part, a planting part connected to the rear part of the traveling machine body so as to be movable up and down, an elevating actuator for moving the planting part up and down, and supplying power to the planting part Depending on the planting clutch to be cut, a pair of left and right markers that are stored as the planting part rises and selectively swings as the planting part descends, and the planting part moves up and down Te, in transplantation machine provided with an auto marker means draw on the left and right markers alternately, to allow the operation lever provided in the operation manipulating unit in the longitudinal direction, while one of the front-rear direction and the left marker drawing board set position When the other marker in the front-rear direction is set as the right marker start setting position and the auto marker means swings out one of the left and right markers, when the operation lever is operated to the opposite marker start position, Also configured as draw on the side of the marker, further the operation lever separately from the automatic marker means auto marker stop operation device for stopping the drawing board markers provided by Rutotomoni, the automatic marker means either the left or right When the operation lever is operated to the opposite marker extraction position within the predetermined time after the marker is extracted, the opposite marker is extracted and the operation lever is operated outside the predetermined time. A transplanter characterized in that it is set so as not to squeeze out the marker .

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