JP6733111B2 - Multi transplanter - Google Patents

Description

The present invention relates to a multi-transplanter capable of feeding a roll-shaped sheet stored in a sheet storage section of a planting work machine to cover a field scene and transplanting seedlings from the sheet.

In general, a roll-shaped sheet that is stored horizontally across the sheet case of a planting work machine is fed out to cover the field scene and supports a spare roll for use when the sheet roll in the sheet case is exhausted. Multi-transplanters are known which are equipped with a possible support device. The multi-transplanter is configured so that the spare roll supported by the supporting device can be slid from the end of the seat case and inserted to replenish the seat roll (see Patent Document 1).

Japanese Patent No. 3822124

However, in the device described in Patent Document 1, there is no other means for notifying the operator of the remaining length of the seat roll in use, such as by visual inspection, and since the seat case is arranged behind the driver's seat, the operator Even if the sheet roll in the sheet case was used up, the planting could be continued without noticing it, and the seedlings could be planted without covering the field scene with the sheet.

Therefore, the present invention provides a multi-transplanter that can notify the operator that the rest of the sheet has reached a predetermined length before the sheet stored in the sheet storage section is used up, and prompt the supply of the sheet at an appropriate time. The purpose is to provide a machine.

The present invention provides a traveling machine body (3) supported by wheels (2), a planting work machine (6) supported by the traveling machine body (3) so as to be vertically movable, and the planting work machine (6). A sheet storage unit (10) which is provided and can store a roll-shaped sheet that covers a field scene, and the planting work machine (6) receives power through a work machine clutch and automatically moves up and down. In a multi-transplanter (100) that automatically moves up and down according to the field scene depending on the mode, and transplants seedlings onto the field from the above continuously fed sheet,
A sheet length input means (76) for inputting a length (L1) of the sheet stored in the sheet storage section (10);
Mileage measuring means (39) for measuring mileage based on the rotation amount of the wheel (2),
Notification means (70, 73),
It is measured by the travel distance measuring means (39) in a state where the sheets stored in the sheet storage section (10) are being fed out and the automatic lifting mode is on or the work machine clutch is connected. The total traveled distance (L) and the notification distance shorter than the seat length (L1) input by the seat length input means (76) by a predetermined length (α). In comparison, the control means (40) is capable of operating the notification means (70, 73) when the integrated total traveled distance (L) becomes equal to the notification distance.
It is characterized by

For example, referring to FIGS. 4 and 8, a detection unit (46) for detecting that the sheet stored in the sheet storage unit (10) is being fed out,
The control means (40) integrates and is stored in the control means (40) when the detection means (46) no longer detects the feeding of the sheet from the sheet storage section (10). The total travel distance (L) is rewritten to the initial value.

For example, referring to FIGS. 7 and 8, it comprises an adjusting means (75) capable of adjusting the predetermined length .

For example, referring to FIGS. 7 and 8, the sheet length input means (76) selects one length from two or more predetermined lengths.

Note that the reference numerals in parentheses above are for comparison with the drawings, but do not limit the configuration of the present invention in any way.

According to the first aspect of the present invention, the total traveling distance in the state where the sheets stored in the sheet storage portion are being fed out and the automatic raising/lowering mode of the planting work machine is on or the work machine clutch is connected. By comparing the used length of the sheet calculated as, and a short notification distance of a predetermined length from the length of the sheet stored in the sheet storage section, by activating the notification means when these are equal, It is possible to prevent the transplanting of seedlings without covering the field due to the unexpected use of sheets, thus improving work efficiency.

According to the second aspect of the present invention, when the feeding of the sheet from the sheet storage portion is no longer detected, the traveling distance accumulated and stored in the control means is rewritten to the initial value. The burden of the operator can be reduced by saving the labor of the distance initialization operation.

According to the present invention of claim 3, since the operator is provided with the adjusting means capable of adjusting the predetermined length, which is the difference between the seat length and the notification distance , the operator totals the total traveled distance due to wheel slips and other reasons. It is possible to correct a difference that may occur between the actual length of use of the seat and the notification time according to the operator's preference, thereby improving convenience.

According to the present invention according to claim 4, when inputting the length of the sheet stored in the sheet storage portion, the input means is provided which can select one length from two or more predetermined lengths. Therefore, by pre-storing the specified lengths of two or more unused sheets defined by standards, etc., it is possible to save the operator's labor for inputting the sheet length by the sheet length input means and to input it. You can reduce mistakes.

The side view which shows the multi-transplanter which concerns on this Embodiment. The side view which shows the hydraulic control mechanism which raises/lowers the work machine with a plant. Sectional drawing which shows a mileage measuring mechanism. FIG. 3 is a side view showing a paper-out detection mechanism. 6A and 6B are operation diagrams showing the sheet storage unit, FIG. 7A is a side view of the paper holder in an open state, and FIG. The perspective view of a multi-transplanter. 6A and 6B are views showing an operation portion, FIG. 7A is a perspective view of a front part of a driving unit as seen from an operator, FIG. 7B is an enlarged view of an input panel, and FIG. The block diagram of a control part. FIG. 3 is a flow chart of paper-out alarm control. (A) is a plan view showing a planting path of a multi-transplanter according to a comparative example, and (b) is a plan view showing a planting path of a multi-transplanter according to the present embodiment. The timing chart which shows ON and OFF of the output of the signal of a preliminary warning and a paper shortage warning.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the riding-type multi-transplanter 100 according to the present embodiment has a traveling machine body 3 supported by front wheels 1 and rear wheels (wheels) 2, and a rear part of the traveling machine body 3 has a traveling machine body 3. The planting work machine 6 is supported by the lifting link mechanism 5 so as to be lifted and lowered. The up-and-down link mechanism 5 has a lift cylinder 7 interposed between the traveling machine body 3 and the planting work machine 6, and responds to expansion and contraction of the lift cylinder 7 by a hydraulic control mechanism 25 (see FIG. 2) described later. The planting work machine 6 is moved up and down.

The planting work machine 6 includes a work machine frame 8 supported by the elevating and lowering link mechanism 5, a seedling stand 9 on which mat seedlings are placed, and a sheet storage section 10 for laterally storing roll-shaped sheets wound around a core. , A planting mechanism 11 for planting seedlings in a field, a cylindrical roller float 12 that slides in a field scene, a sheet S covering the field scene by operating a paper pressing roll 13 and a cutter lever 15 (see FIGS. 5 and 10) And a cutter 16 and the like for appropriately separating the roll-shaped sheet from each other.

The planting mechanism 11 plants the seedlings scraped from the mat seedlings on the sheet S that is continuously fed out and covers the field scene as the traveling machine body 3 travels, in the field. The roller float 12 is formed in a cylindrical shape that extends in the left-right direction and is provided in parallel in the front-rear direction. The paper pressing roll 13 is formed in a cylindrical shape that extends in the left-right direction and is disposed behind the roller float 12. The roller float 12 and the paper pressing roll 13 slide in the field scene while pressing the fed-out sheet S against the field scene, and the paper pressing roll 13 has a smaller ground contact area than the roller float 12.

At the center of the traveling machine body 3, an operation unit 17 is arranged in which an operator rides and operates the traveling machine body 3 and the planting work machine 6. A driver's seat 19, a steering wheel 20, a work implement operating tool 21 (see FIG. 7), a display panel 22 (see FIG. 7), an input panel 23 (see FIG. 7), and the like are arranged in the driving section 17. In the present embodiment, unless otherwise noted, the front direction facing the operator seated in the driver's seat 19 is defined as the front, and the front, rear, left, and right directions are defined on the basis of this.

An engine (not shown) and a transmission (not shown) are mounted on the front part of the traveling machine body 3. The power output from the engine is geared by the transmission, transmitted to the front wheels 1 and the rear wheels 2, and also transmitted to the work implement 6 with a plant via the hydraulic control mechanism 25 (see FIG. 2). A planting clutch (working machine clutch, not shown) is provided inside the transmission, and power transmission to the planting working machine 6 is connected/disconnected as the planting clutch is connected/disconnected.

Next, the hydraulic control mechanism 25 will be described with reference to FIG. The hydraulic control mechanism 25 includes a work machine operation cam motor 30 driven by operation of the work machine operation tool 21 (see FIG. 7 ), a work machine operation cam 31 that rotates based on the drive of the work machine operation cam motor 30, and a rotation. A clutch arm 35 that swings around the pin 33 and whose posture changes with the rotation of the working machine operation cam 31, a hydraulic control valve 29 that opens and closes with a change in the posture of the clutch arm 35, and a working machine operation cam 31. And a work implement cam potentiometer 32 for detecting a rotational position.

The working machine operation cam 31 has a rotating position of a rising position, a fixed position, a descending position, and a planting position, and each rotating position is detected by the working machine cam potentiometer 32. When the clutch arm 35 swings and the hydraulic control valve 29 is opened/closed in accordance with each rotational position of the work machine operation cam 31, the hydraulic pump (not shown) provided in the transmission releases or cuts off the hydraulic pressure to lift the lift. The cylinder 7 expands and contracts, and the planting work machine 6 moves up and down. The lift height of the planting work machine 6 is detected by the lift angle potentiometer 27 (see FIG. 8) based on the angle of the lift link mechanism 5. When the working machine operation cam 31 is located in the raised position, the planting working machine 6 is raised, and when it is located in the fixed position, the planting working machine 6 is fixed at an arbitrary height and is placed in the lowered position. When positioned, the planting work machine 6 descends. When it is detected by the lift angle potentiometer 27 that the work implement 6 with plants is raised to a predetermined height (upper end position) when the work implement operation cam 31 is located at the raised position, the work implement operation cam 31 is at the fixed position. And the raising of the planting work machine 6 is stopped. Further, when the work implement operation cam 31 is located at the lowered position, the planting work implement 6 is lowered to a height at which the roller float 12 is in contact with the ground, and the work implement operation cam 31 can be moved to the planting position.

When the work implement operation cam 31 is located at the lowered position and the planting position and the roller float 12 is in contact with the ground, the planting work implement 6 moves the posture and the height of the roller float 12 along with the tracking of the field scene. Based on the change in the height, the hydraulic control valve 29 is opened and closed to automatically move the planting work machine 6 up and down to keep the planting depth constant. When the work machine operation cam 31 is located at a position other than the planting position, the planting clutch is disconnected and the planting mechanism 11 does not operate. When the work machine operation cam 31 is located at the planting position, the planting clutch is connected and planted. The mechanism 11 operates.

As shown in FIG. 3, the power generated by the engine is transmitted to the rear axle case 37 supporting the rear wheel 2 via the input shaft 36 extending in the front-rear direction. Inside the rear axle case 37, a detection gear 41 that rotates integrally with the input shaft 36 and a traveling brake 43 that brakes the rotation of the input shaft 36 are provided. The detection gear 41 is fixed to the input shaft 36, and the rotation amount of the detection gear 41 is detected by the rotation sensor 42. That is, the rotation amount of the input shaft 36 that rotates by the same amount as the detection gear 41 is detected by the traveling distance measuring mechanism (driving distance measuring means) 39 configured by the detection gear 41 and the rotation sensor 42, and the detection result is controlled. It is output to the unit (control means, see FIG. 8) 40.

As shown in FIG. 4, the sheet storage unit 10 includes a paper roll case 45 that can be opened and closed at the left and right ends and horizontally stores a roll-shaped sheet, a detection mechanism support piece 50 fixed to the work machine frame 8, and a sheet. A paper breakage detection mechanism (detection means) 46 that detects whether or not a sheet is fed from the storage unit 10. The paper break detection mechanism 46 is formed in a plate shape, and detects a sheet detection piece 47 that swings in contact with the sheet S (see FIG. 5) fed from the paper roll case 45, and the swing of the sheet detection piece 47. A paper break detection switch 49 is provided. The paper break detection mechanism 46 is fixed to the detection mechanism support piece 44 by an adjustment bolt 55, and by tightening and loosening the adjustment bolt 55, the paper break detection mechanism 46 is moved along a long hole (not shown) provided in the detection mechanism support piece 50. The front-back position of the paper break detection mechanism 46 with respect to the paper roll case 45 can be changed.

The sheet detection piece 47 is swingably supported around a swing shaft 51 arranged behind the central axis of the roll-shaped sheet stored in the paper roll case 45, and the lower end of the sheet detection piece 47 is placed on the sheet. It is biased by the detection spring 52 toward the front, which is the approaching direction. When the sheet stored in the paper roll case 45 is delivered from the paper roll case 45 and comes into contact with the sheet detection piece 47, the lower end of the sheet detection piece 47 tilts backward against the biasing force of the detection spring 52. The paper-out detection switch 49 includes a switch lever 53 formed in a plate shape and in contact with the sheet detection piece 47. When the posture of the switch lever 53 changes as the sheet detection piece 47 tilts, the paper-out detection switch 49. Is switched on and off. Then, the paper-out detection switch 49 is turned off when the sheet is being fed from the sheet storage unit 10 and is turned on when the sheet is not being fed.

When the relative position between the central axis of the roll-shaped sheet accommodated in the paper roll case 45 and the lower end of the sheet detection piece 47 is not appropriate, the paper breakage detection switch 49 is used even if the sheet is fed from the paper roll case 45. May be turned on, the sheet detection piece 47 may become a resistance, and the sheet may not be properly fed. In this case, by adjusting the position of the paper break detection mechanism 46 so that the clearance (size A) between the lower end of the sheet detection piece 47 and the adjustment guide 56 becomes an appropriate size by tightening or loosening the adjustment bolt 55, the above problem occurs. Can be solved.

Further, as shown in FIG. 5, the sheet storage unit 10 extends rearward from the vicinity of the paper roll case 45 and supports the sheet S fed from the paper roll case 45 when the planting work machine 6 rises. The holder 57, the paper holder operating lever 59 that is swingably supported to open and close the paper holder 57, and the sheet stored in the paper roll case 45 are rotated by rotation, and the sheet is manually stored. A paper feeding knob 61 that can feed the paper to the outside of the unit 10.

The paper holder 57 is in a closed state (FIG. 5B) for carrying out the transplanting work and an open state in which the sheet stored in the paper roll case 45 can be manually fed out (FIG. 5A). And. When the front end of the paper holder operating lever 59 is operated clockwise in the left side view in the closed state, the rear end of the paper holder 57 descends to be in the open state (FIG. 5A). When the front end of the paper holder operating lever 59 is operated counterclockwise as viewed from the left side, the rear end of the paper holder 57 rises again to be in the closed state (FIG. 5(b)) for performing the transplanting work.

As shown in FIG. 6, on both left and right sides of the traveling machine body 3, an auxiliary roll base 62 capable of supporting a roll-shaped spare sheet P to be used when the sheets stored in the paper roll case 45 are used up. Are arranged. The auxiliary roll base 62 supports the auxiliary sheet P such that the central axis of the roll-shaped auxiliary sheet P is substantially in the front-rear direction, and is provided near the rear end of the auxiliary sheet P supported by the auxiliary roll base 62. It is configured to be rotatable about a vertical axis. When the planting work machine 6 is at the upper end position and the auxiliary roll base 62 is rotated, the end portion of the roll-shaped spare sheet P supported by the auxiliary roll base 62 comes close to the end portion of the paper roll case 45. It is possible to do.

As shown in FIG. 7, a display panel 22 is arranged in front of the operating unit 17, an input panel 23 is arranged on the left rear side thereof, and a planting work machine is arranged on the right rear side of the display panel 22. A work implement operating tool 21 for operating a work implement upper operation switch 66 and a work implement lower operation switch 67 for moving up and down 6 is arranged.

The display panel 22 has a fuel display lamp 69 for displaying the remaining amount of fuel, an alarm lamp (informing means) 70 for informing the sheet replenishment timing, an alarm lamp status display lamp 71, an alarm buzzer status display lamp 72, and the like. The alarm lamp 70 operates together with an alarm buzzer (notifying means) 73 provided on the traveling machine body 3 in response to a signal output from the control unit 40. The alarm lamp 70 blinks or lights, and the sound emitted by the alarm buzzer 73. Thus, the operator is informed of the sheet replenishment timing.

The input panel 23 includes a timing adjustment dial (adjusting means) 75 capable of adjusting a preliminary alarm distance (predetermined length) α (see FIGS. 9 and 10) described later, and a sheet before use which is stored in the sheet storage unit 10. The roll length setting dial (sheet length input means) 76 for inputting the length L1, the preliminary alarm mode changeover push switch 77 for switching the alarm enable/disable state by the alarm lamp 70 and the alarm buzzer 73, and the drive of the work machine 6 with plants can be restricted. It has a work preparation switch 79, an alarm lamp 70, and an alarm stop switch 80 for stopping the output of signals to the alarm buzzer 73.

FIG. 8 shows a control block diagram in the present embodiment, in which the traveling machine body 3 controls each device used in the transplanting work including the paper-out warning control (see FIG. 9) based on each input/output. The unit 40 is provided. The control unit 40 includes a microcomputer including a CPU 40a, a ROM 40b, a RAM 40c, an interface (I/F) 40d, and the like. On the input side of the control section 40, a work preparation switch 79, a work machine upper operation switch 66 and a work machine lower operation switch 67, a roll length setting dial 76, a timing adjustment dial 75, an alarm stop switch 80, a work machine cam potentiometer 32, The lift angle potentiometer 27, the paper break detection switch 49, the preliminary alarm mode switching push switch 77, the rotation sensor 42, etc. are connected. To the output side of the control unit 40, the work machine operation cam motor 30, the alarm lamp 70, the alarm buzzer 73, the alarm lamp status display lamp 71, the alarm buzzer status display lamp 72, etc. are connected. The control unit 40 outputs a paper-out alarm signal when the paper-out detection mechanism 46 detects that the sheet is not fed out from the sheet storage unit 10, and activates the alarm lamp 70 and the alarm buzzer 73.

The roll length setting dial 76 can move forward and backward toward the input panel 23 and is provided so as to project from the input panel 23. The roll length setting dial 76 retracts toward the input panel 23 when pressed, and when the roll length setting dial 76 retracts, the preliminary alarm mode switching push switch 77 provided inside the input panel 23 is operated. When the pressing force of the roll length setting dial 76 is released, it is restored by the reaction force of the elastic body (not shown) provided inside the preliminary alarm mode switching push switch 77.

Next, the paper-out alarm control will be described with reference to FIGS. 9 and 10. Further, this flow shows only the preliminary warning mode or the non-preliminary warning mode, but the flow of the preliminary warning lamp mode or the preliminary warning buzzer mode described later is the same as the preliminary warning mode (YES in step S15). , The description is omitted. When the paper-out warning control is started (step S1), the control unit 40 determines whether or not the work preparation switch 79 is on (step S11), and when it is off, returns the process to step S1. If it is on, it is determined whether or not the alarm stop flag is set (step S12). When the alarm stop flag is not set, the control unit 40 determines whether or not the alarm stop switch 80 has been operated (step S13). When the alarm stop switch 80 has not been operated, the sheet breakage detection switch 49 causes the sheet storage unit 10 to move the sheet. Is determined (step S14).

When the sheet is fed from the sheet storage unit and the paper-out detection switch 49 is off, the control unit 40 determines whether or not the preliminary alarm mode is set (step S15). By operating the preliminary alarm mode switching push switch 77, the control unit 40 is sequentially switched to the preliminary alarm mode→the preliminary alarm lamp mode→the preliminary alarm buzzer mode→the non-preliminary alarm mode→the preliminary alarm mode→. Both the alarm lamp 70 and the alarm buzzer 73 can be activated in the preliminary alarm mode, only the alarm lamp 70 can be activated in the preliminary alarm lamp mode, only the alarm buzzer 73 can be activated in the preliminary alarm buzzer mode, and the alarm lamp in the non-preliminary alarm mode. Neither 70 nor the alarm buzzer 73 is activated. When the control unit 40 is in a state where it can output a preliminary warning signal to the warning lamp 70, the warning lamp status display lamp 71 lights up, and the control unit 40 can output a preliminary warning signal to the warning buzzer 73. In some cases, the alarm buzzer status indicator lamp 72 lights up.

The control unit 40 returns the process to step S1 if it is not in the preliminary warning mode (NO in step S15), and if the roll length setting dial 76 is rotated if it is in the preliminary warning mode (YES in step S15). Is determined (step S16). The operator rotates the roll length setting dial 76 (YES in step S16) to select one of the three commercially available sheet lengths of 100 (m), 125 (m) and 170 (m). When one length is selected, the control unit 40 stores the selected length as a new sheet length L1 in the control unit 40 (step S17), and returns the process to S1.

When the roll length setting dial 76 is not rotated (NO in step S16), the control unit 40 determines whether or not the timing adjustment dial 75 is operated (step S18). When the operator operates the timing adjustment dial 75 (YES in step S18), the control unit 40 stores the preliminary warning distance α corresponding to the rotation angle of the timing adjustment dial 75 (step S19), and returns the process to step S1. .. Specifically, when the operator fully turns the timing adjustment dial 75 counterclockwise, the preliminary warning distance α becomes 0 (m), and when it is turned clockwise, the preliminary warning distance α gradually increases in accordance with the rotated angle. Become. The adjustment width of the preliminary warning distance α is preferably between 5 (m) and 30 (m). If the preliminary warning distance α is too small, it is difficult for the operator to stop the transplanting work after the preliminary warning signal is output and before the sheets stored in the sheet storage section 10 are used up, and the length of the actually fed sheet S is long. When the deviation between the total travel distance L calculated based on the rotation amount of the input shaft 36 and the total travel distance L is large, it is conceivable that the sheets stored in the sheet storage unit 10 are used up before the signal of the preliminary alarm is output. If the preliminary alarm distance α is too large, the operator recognizes the time when the sheets stored in the sheet storage unit 10 are used up because the sheets remaining in the sheet storage unit 10 are too long when the alarm lamp 70 and the alarm buzzer 73 are activated. It can happen that it is difficult.

It should be noted that normally, the operator performs the above-described setting operation of the sheet length L1 and the preliminary warning distance α before starting the multi-transplanting operation in which the sheet is unrolled and the transplanting operation is performed.

When the timing adjustment dial 75 is not operated (NO in step 18), the control unit 40 determines whether or not the automatic lifting mode of the work machine 6 with plants is on (step S20), and the automatic lifting mode is set. If it is in the ON state (YES in step S20), the measurement of the traveling distance is started, and the measurement result is added to the total traveling distance L (step S22). When the automatic raising/lowering mode of the planting work machine 6 is in the OFF state (NO in step S20), the control unit 40 determines whether the work machine operating cam 31 is in the planting position (the planting clutch is in the connected state). (Step S21), the process returns to step S1 if the position is not the planting position, and if the position is the planting position, the travel distance is measured in the same manner as when the automatic lifting mode is turned on in step S20. After the start, the measurement result is added to the total traveling distance L (step S22). Then, the control unit 40 subtracts the preliminary warning distance α set by the timing adjustment dial 75 from the total running distance L and the sheet length L1 set by the rotation of the roll length setting dial 76, and the notification distance (L1− α) is compared with (step S23). When the informing distance (L1-α) is larger than the total traveling distance L (NO in step S23), the control unit 40 returns the process to step S1 and the total traveling distance L and the informing distance (L1-α) are equal to each other. When they are equal (YES in step S23), the output of the signal of the preliminary alarm for activating the alarm lamp 70 and the alarm buzzer 73 is started (step S24), and the process is returned to step S1.

In step S14, when the sheet is not fed out from the sheet storage unit 10 and the paper-out detection switch 49 is on, the control unit 40 stops the output of the signal of the preliminary alarm, and the alarm lamp 70 and the alarm buzzer 73 are notified of the paper-out alarm. The output of the signal is started, and the total running distance L accumulated and stored in the control unit 40 is rewritten to the initial value 0 (m) (step S25). As a result, a new integration of the total travel distance L can be started, and the control unit 40 returns the process to step S1.

As shown in FIG. 11, when the signal of the preliminary alarm is output from the control unit 40, the alarm lamp 70 blinks and the alarm buzzer 73 emits an intermittent sound. From the start of the preliminary warning until the output of the paper-out warning signal from the control unit 40, the interval of blinking of the lamp and the interval of intermittent sound become smaller as the multi-transplanter 100 advances. Further, when the control unit 40 outputs a signal for a paper out alarm, the alarm lamp 70 is continuously turned on and the alarm buzzer 73 emits a continuous sound.

When the alarm stop switch 80 is operated in step S13, the control unit 40 stops the output of the preliminary alarm signal and the paper shortage alarm signal, sets the alarm stop flag (step S26), and returns the process to step S1. When the alarm stop flag is set in step S12, the control unit 40 once raises the work implement 6 with the plant to the upper end position, and then descends to a predetermined height, for example, the height at which the roller float 12 comes into contact with the ground ( (Step S27) The alarm stop flag is cleared (step S28), and the process is returned to step S1. As a result, the signal for the preliminary alarm or the paper shortage alarm can be output again. Further, in a state where the total traveling distance L is never accumulated, the total traveling distance L is stored as 0 (m) in the control unit 40, and the operation of the roll length setting dial 76 is never performed. The sheet length L1 is set to 100 (m) in the state where the sheet is not present. When the preliminary alarm mode is set in a state where the setting operation of the roll length setting dial 76 has never been performed, the control unit 40 displays a message on the display unit 85 to prompt the initial setting of the sheet length L1. The preliminary warning may be prohibited until the initial setting of the sheet length L1 is made.

The operator is informed that the remaining length of the sheet stored in the sheet storage unit 10 is short by the alarm lamp 70 and the alarm buzzer 73 by the paper shortage alarm control, and supplies the sheet to the sheet storage unit 10, for example. In this case, the auxiliary sheet P prepared in advance outside the auxiliary roll base 62 or the multi-transplanter 100 is used. When using the auxiliary sheet P supported by the auxiliary roll base 62, the operator first raises the planting work machine 6 to the upper end position and operates the paper holder operating lever 59 to open the paper holder 57. .. As a result, the sheet holder 57 does not get in the way and the sheet stored in the paper roll case 45 can be easily fed out. Next, the operator opens the right end or the left end of the paper roll case 45, and carries out the sheets, cores and the like remaining inside the paper roll case 45 to empty the inside of the paper roll case 45. In this state, the operator rotates the auxiliary sheet P supported by the auxiliary roll base 62 together with the auxiliary roll base 62 to bring the end portion of the auxiliary sheet P and the end portion of the paper roll case 45 into close proximity to each other. By carrying the sheet P of No. 2 into the empty paper roll case 45, the sheet of the auxiliary roll base 62 can be replenished into the paper roll case 45. After that, the operator closes the right end and the left end of the paper roll case 45 and rotates the paper feeding knob 61 to feed the sheet S of a sufficient length from the paper roll case 45. The sufficient length means a length which extends at least to the rear from the ground contact portion of the front roller float 12 when the front and rear roller floats 12 are grounded. The operator manually feeds the sheet, then operates the paper holder operating lever 59 to close the paper holder, and holds the fed sheet S so as to be sandwiched between the roller float 12 and the paper holder 57. The replenishment of the sheets to the storage unit 10 is completed.

As described above, in the present embodiment, the total travel distance L in the state in which the planting work machine can spread the sheet, which is calculated based on the rotation amount of the input shaft 36, is regarded as the used length of the sheet, and the used length of the sheet is It is possible to inform the operator that the remaining length of the sheet is short before it becomes equal to the length L1 of the sheet before use stored in the sheet storage unit 10. As a result, the operator can know in advance when the sheets stored in the sheet storage unit 10 will be used up. Therefore, after traveling with the sheets stored in the sheet storage unit 10 running out, There is no need to retreat and perform the transplanting work of the uncovered part β (see FIG. 10) again, and rice and working time are not wasted.

When the control unit 40 outputs the signal of the preliminary warning based on the total travel distance L when the automatic raising/lowering mode of the planting work machine 6 is in the ON state, the sheet covering work is performed without performing the transplanting work. Also in, the used length of the sheet can be calculated. Further, in the present embodiment, the rotation amount of the rear wheel 2 is indirectly detected by detecting the rotation amount of the input shaft 36 that rotates with the rotation of the rear wheel 2. However, in calculating the traveling distance, Of course, the amount of rotation of the front wheel 1 or the rear wheel 2 may be directly detected, or the amount of rotation of a member other than the input shaft 36 that rotates with the rotation of the front wheel 1 or the rear wheel 2 may be detected. ..

Since the control unit 40 rewrites the accumulated and stored total travel distance L to 0 (m) when it no longer detects that the sheet is being fed out from the sheet storage unit 10, the operator can replenish the sheet after the sheet is replenished. It is possible to save the trouble of initializing the total traveling distance L and prevent the operator from forgetting to perform the initializing operation and not knowing the remaining length of the sheet. Further, since the ON signal of the paper break detection switch 49 is used as a trigger for rewriting the total travel distance L to 0 (m), no additional detection means or input means is required, and the cost can be reduced by reducing the number of parts.

Further, since the operator can adjust the preliminary warning distance α with the timing adjustment dial 75, the total traveling distance L accumulated by the control unit 40 due to slip of the rear wheel 2 and other reasons and the actual used seat length are generated. Since it is possible to adjust the notification time in consideration of possible differences and the operator can adjust the notification time according to his/her preference, convenience can be improved.

When the length L1 of the sheet stored in the sheet storage unit 10 is input, the operator can select one length from the three predetermined lengths, so that the unused length specified by the standard or the like is not used. By storing a plurality of sheet lengths in advance, compared with a case where the sheet length L1 is directly input as a numerical value, the operator's labor for inputting the sheet length L1 by the roll length setting dial 76 is saved. Not only can it be omitted, but input mistakes in numerical values can be reduced. The input means for the sheet length L1 is not limited to the configuration of selecting from the above three lengths, and the configuration of selecting from two lengths or the configuration of selecting from more than three lengths may be used. Needless to say, the length may be input steplessly. For example, when the operator rotates the roll length setting dial 76 clockwise toward the input panel 23, the value of the sheet length L1 input based on the rotated angle is increased steplessly and counterclockwise. It is conceivable that the value of the sheet length L1 input based on the rotated angle will be reduced steplessly when turned to. In this case, if the display panel 22 is provided with a display device that digitally displays the value of the input sheet length L1 by a dot matrix or a 7-segment display, the visibility of the input sheet length L1 is improved. Can be improved.

Since the operator can operate the timing adjusting dial 75 and the preliminary alarm mode switching push switch 77 with one input device, the operator does not have to search for the input device at the time of operation, and the cost can be reduced by reducing the number of parts. The control unit 40 gradually shortens the interval of the flashing alarm lamp 70 and the intermittent buzzer sound of the alarm buzzer 73 as the difference between the total travel distance L and the notification distance (L1-α) of the preliminary warning signal decreases. And outputs the signal of the paper shortage alarm as the lighting of the alarm lamp 70 and the continuous sound of the alarm buzzer 73, the remaining length of the sheets stored in the sheet storage unit 10 gradually decreases. It is easy for the operator to intuitively understand how the sheet is going to be used and the sheet has been used up. It should be noted that the notification to the operator when the signal of the preliminary warning or the paper shortage warning is output may be performed by vibrating the driver seat 19, the steering wheel 20, and the like. In this case, the operator can easily notice the alarm even when the ambient noise is large during the transplanting work. The control unit 40 may be formed by a discrete circuit or may be integrally formed as a semiconductor integrated circuit element.

2 wheels (rear wheel)
3 traveling machine body 6 working machine with planting 10 sheet storage section 39 mileage measuring means (mileage measuring mechanism)
40 Control means (control section)
46 detection means (paper out detection mechanism)
70 Notification means (alarm lamp)
73 Notification means (alarm buzzer)
75 Adjusting means (timing adjusting dial)
76 Sheet length input means (roll length setting dial)
100 Multi-transplanter L Total mileage L1 Seat length α Predetermined length (preliminary warning distance)

Claims (4)

A traveling machine body supported by wheels, a planting work machine supported by the traveling machine body so as to be able to move up and down, and a sheet storage unit provided in the planting work machine and capable of storing a roll-shaped sheet covering a field scene. And the planting work machine is power-transmitted through a work machine clutch, and is automatically moved up and down according to a field scene by an automatic lifting mode, and is continuously fed out from the top of the sheet field. In a multi-transplanter that transplants seedlings into
A sheet length input means for inputting a length of the sheet stored in the sheet storage section,
Mileage measuring means for measuring mileage based on the amount of rotation of the wheel,
Notification means,
The traveling distance measured by the traveling distance measuring means in the state where the sheet stored in the sheet storage portion is being fed out and the automatic lifting mode is on or the working machine clutch is connected is integrated. , The accumulated total traveling distance is compared with a notification distance which is shorter than the sheet length input by the seat length input means by a predetermined length, and the accumulated total traveling distance becomes equal to the notification distance. A control means capable of operating the notification means at the time,
A multi-transplanter characterized by that. A detection unit that detects that the sheet stored in the sheet storage unit is being fed out,
The control means rewrites the total travel distance accumulated and stored in the control means to an initial value when the detection means no longer detects the feeding of the sheet from the sheet storage portion,
The multi-transplanter according to claim 1. Comprising adjusting means capable of adjusting the predetermined length ,
The multi-transplanter according to claim 1 or 2. The sheet length input means selects one length from two or more predetermined lengths.
The multi-transplanter according to any one of claims 1 to 3.

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