JP4918379B2 - Sprinkler for granular fertilizer - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a spraying device for granular fertilizer and the like that sprays the feed granule on a field by a vertical pipe while feeding the granule such as the granular fertilizer accommodated in a tank.

  Conventionally, as an input element from the outside, by setting the spraying amount for setting the spraying amount per area, the spraying width, the spraying speed, the density of the sprayed material, and the size of the feeding roll, 1 A configuration in which the number of revolutions of a feeding roll is obtained by knowing the discharge amount per minute is known (Patent Document 1).

In addition, there is a configuration for calculating and displaying the cumulative value of the spread amount (Patent Document 2).
With this configuration, the number of rotations of the roll shaft can be controlled by inputting the external input element through a knob or the like, and the cumulative value of the spraying amount can be known, so that the suitability of the working state can be grasped. is there.
Japanese Patent No. 2706758 JP 2006-20507 A

  However, in the conventional spraying device, it is necessary to perform a predetermined operation for displaying the cumulative value of the spraying amount, and the display is performed only when the operator recognizes it. Therefore, the timing for the operator to obtain the accumulated value information is lost, and appropriate accumulated value confirmation cannot be performed.

The invention according to claim 1 is provided with a partition wall (10a) in a tank (10) for storing spray particles and divided into two compartments (A, B), and below the tank (10), A plurality of first rolls (20a) formed in the circumferential direction with the same feeding recess capacity, a second roll (20b) having the same form as the first roll (20a), a third roll (20c), and shorter than these rolls In addition, a fourth roll (20d) formed with a shallow recess is provided, of which the first and second rolls (20a, 20b) are mounted on the roll drive shaft (21) via the one-way clutch (22, 22). The third roll (20c) and the fourth roll (20d) constitute a feeding device 11 that is integrally attached to the roll drive shaft (21).
Of the two sections, one section (A) corresponds to the first to third rolls (20a to 20c), and the other section (B) corresponds to the fourth roll (20d).
When the roll drive shaft (21) is connected to a roll drive motor (25) for forward / reverse drive, and the roll drive shaft (21) rotates forward, the first and first ones are operated in conjunction with the one-way clutch (22, 22). When the two rolls (20a, 20b) are driven and the roll drive shaft (21) reverses, the first and second rolls (20a, 20b) are stopped.
The feeding rolls (20a, 20b, 20c, 20d) are configured to be driven to be driven at a predetermined number of rotations corresponding to the size of the set spraying amount of the spraying amount setting means (58, 59U, 59D),
A controller (15) is provided for calculating the number of revolutions of the feeding rolls (20a, 20b, 20c, 20d) from the set spread amount information and vehicle speed information output by detecting the rotation of the traveling transmission unit of the traveling machine body;
In a spraying device such as a granular fertilizer provided with a roll drive motor (25) for normal rotation or reverse rotation of the roll drive shaft (21) at this feeding rotational speed,
Means are provided for calculating a cumulative feed amount based on the cumulative number of revolutions of the feed roll and a predetermined feed amount for each unit rotation of the feed roll, and detecting that the controller (15) has been switched from power on to power off. The cumulative feeding amount is written in the nonvolatile memory (63).

  According to a second aspect of the present invention, in the first aspect, the cumulative feed amount (QT) stored in the non-volatile memory (63) when the power to the controller (15) is turned on is displayed on the display unit (56) for a predetermined time. The configuration is as follows.

  A third aspect of the present invention includes a pair of left and right feeding devices (11, 11) operated by the driving means (25) according to the first or second aspect, and a pair of feeding devices (11, 11). Clutch means (28L, 28R) that drives or undrives the feeding devices (11, 11) separately from the drive means (25) is provided, and the one-side sprayed state by the clutch means (28L, 28R) is provided. One-side scatter detection means (70) for detecting is provided, and the coefficient for calculating the cumulative feed amount is set to ½ at the time of one-side scatter detection.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects of the present invention, it is detected whether or not the vehicle speed information of the traveling vehicle input to the controller (15) is abnormal. Means for providing a vehicle speed substitute value in the event of an abnormality and continuing the spraying work, and calculating and displaying the cumulative feed amount even during the work is continued.

According to the first aspect of the present invention, the cumulative feeding amount is written in the nonvolatile memory by turning off the key switch, so that the writing frequency can be reduced and the service life can be maintained for a long time.
According to the second aspect of the present invention, it is possible to prevent the user from forgetting to check the cumulative feeding amount, and to optimize the display of the cumulative value at the time of work.

In the invention according to claim 3, when performing both-side and one-side spraying in a one-stroke field, the accuracy of the cumulative feeding amount per field is improved.
In the invention according to claim 4, when the spraying is continued due to an abnormality in the vehicle speed input, the guideline of the spraying amount can be confirmed. However, the rotational speed of the roll drive motor 25 is detected, and the roll rotational speed is calculated. Therefore, the cumulative feed amount can be calculated regardless of fluctuations in the speed of the traveling aircraft.

Embodiments of the present invention will be described below with reference to the drawings.
First, as shown in FIGS. 1 and 2, the granular spraying device 1 is mounted on the rear part of the riding management machine 2. A pair of left and right tanks 10 and 10 are mounted on the rear part of the two riding management machines which are equipped with the engine 3 at the front and transmit the front and rear wheels 4 and 5 by appropriately changing the engine speed. The granular spraying device 1 includes the tank 10, a feeding device 11, a blower 12, a first jet tube 13, a second jet tube 14, a control unit 15, and the like.

  Each of the pair of tanks 10 and 10 is provided with a feeding device 11 for feeding a predetermined amount of sprayed granule from the tank 10. The feeding device 11 comprises a plurality of rolls 20 on the roll drive shaft 21, and a first roll 20 a formed in the circumferential direction with a feeding recess having the same capacity, and a second roll 20 b having the same form as the first roll 20 a. , The third roll 20c and the fourth roll 20d formed shorter than these rolls and having a shallow recess depth, and the first and second rolls 20a and 20b are rolled via the one-way clutches 22 and 22, respectively. The third roll 20 c and the fourth roll 20 d are mounted on the drive shaft 21, and are configured to be mounted integrally on the roll drive shaft 21.

  Accordingly, when the roll drive shaft 21 is driven forward, the first and second rolls 20a and 20b are driven by the interlocking action of the one-way clutches 22 and 22, so that all the first to fourth rolls 20a to 20d are driven. It is the composition which is done. Conversely, when the roll drive shaft 21 is driven in reverse, the first and second rolls 20a and 20b are stopped, and the third roll 20c and the fourth roll 20d are driven.

  On the other hand, the inside of the tank 10 is provided with a partition wall 10a having a U-shape in plan view, and is divided into a section A corresponding to the first to third rolls 20a to 20c of the feeding device 11 and a section B corresponding to the fourth roll 20d. It has a configuration. The section A is used for a general fertilizer granule, and the section B is used for a herbicide that requires a small amount of spraying. Accordingly, when the roll drive shaft 21 rotates in the forward direction, the first roll 20a to the third roll 20c are rotated in conjunction with each other so that the granule in the section A is brought out, and when reverse, only the third roll 20c in the section A is turned on. It will be in the extended state. When the herbicide is introduced into the section B, a small amount is sprayed by this reverse interlocking.

  In the following description, the supply state of the first to third rolls 20a, 20b, and 20c is referred to as a large supply state, the supply state of the third roll 20c is referred to as a medium supply state, and the supply state of the fourth roll 20d is referred to as a small supply state. Also, the roll type is set by the roll or roll set used in the three, large, and small feeding states.

  The pair of left and right roll drive shafts 21 and 21 are configured to be interlocked by a group of bevel gears 24 to a motor interlocking shaft 23 that is orthogonal thereto. The motor interlocking shaft 23 is connected to a motor driving shaft 26 of a roll driving motor 25 as driving means by a coupling 27. The roll drive motor 25 is configured to be linked to forward / reverse switching.

  Clutch means 28L and 28R are provided between the motor interlocking shaft 23 and the left and right roll drive shafts 21 and 21, and the rotation of the motor interlocking shaft 23 is transmitted to the left roll drive shaft 21 or is not driven. In this configuration, the rotation of the motor interlocking shaft 23 can be transmitted to the right roll drive shaft 21 or switched to the non-driven state, and the clutch means 28L, 28R are arranged to spread the left and right booms in the vicinity of the driver's seat. The levers 29L and 29R can be operated separately.

  The through cylinders 30 and 30 are respectively located below the pair of feeding devices 11 and 11, and one end of each of the through cylinders 30 and 30 is communicated with the blow cylinder 31 provided with the blower 12. The other end on the downstream side is configured to communicate with the first jet tube 13.

  The blower device 12 is constituted by a blower fan 12a that is linked to the PTO shaft 32 of the passenger management machine 2 via an electromagnetic clutch 12b, and the blast air enters the through-cylinder 30 through the blower cylinder 31 and is fed out. Is transferred to the first jet tube 13 by being carried in an air stream. An air volume adjusting valve 33 is provided in the middle of the blower cylinder 31 so that the air volume adjusting lever 34 can be rotated around the axis.

  A rectifying plate 35 provided on the side wall portion from the upstream side of the transfer, a jump base 36 provided on the bottom portion, and a collision plate 37 on the bottom portion are also provided in the first jet tube 13. Reference numeral 38 denotes an injection hole having a predetermined diameter formed between the jump base 36 and the collision plate 37.

  A second jet pipe 14 is connected to the left and right first jet pipes 13 via a bellows pipe 40 so as to be bent. That is, a cylindrical body 42 is provided at the distal end of the bellows tube 40, and the cylindrical body 42 is configured to be rotatable around a longitudinal support shaft 44 via an arm body 43, and between the arm body 43 and the machine frame side. An electric telescopic cylinder 45 is interposed, and the second jet tube 14 is expanded laterally so as to be in a working posture by the electric motor 46 being extended by normal rotation, and the second jet tube 14 is brought into a state along the fuselage by shortening by reverse rotation. It is the structure to store. The electric motor 46 is provided in a pair of left and right, and can be switched to forward rotation or reverse rotation by operating the left / right boom opening / closing switches 41L, 41R.

  The cylindrical body 42 is provided with a lateral support shaft 47, and the second jet tube 14 is connected via the support shaft 47, and is rotated around the lateral support shaft 47 in addition to the movement to the storage posture. Can be switched between a vertical storage position and a horizontal working position. The second jet on the left or right side can be changed based on the operation of the left / right adjustment lever (not shown) at hand. The tubes 14L and 14R can be switched to a vertical posture (non-working posture) or a horizontal posture (working posture). 49L and 49R are traction ropes for interlocking operation of the second jet tube 14L or 14R.

The second nozzle tube 14 is formed with nozzle holes 50, 50... Having a predetermined diameter at predetermined intervals.
Next, the control unit 15 of the granular spraying device 1 having the above configuration will be described. The control unit 15 includes a fertilizer controller 15A, a motor controller 15B, and a main machine controller 15C connected to each other (FIG. 7). Of these, the fertilizer controller 15A includes data necessary for fertilization and herbicide application, for example, the roll drive While inputting the motor rotation pulse of the motor 24, selection information by the left and right boom spreading levers 48L and 48R, driving information of the blower fan 12a, remaining amount sensors 54 and 54 detection signals provided in the tank 10, etc., the motor controller 15B is inputted. A motor rotation output pulse signal, a motor rotation direction switching signal, etc. are output (FIG. 8).

The machine controller 15C is configured to transmit the vehicle speed data from the means for detecting the vehicle speed to the fertilizer controller 15A.
In addition, the fertilizer controller 15 </ b> A inputs information on switches disposed on the operation panel 55. A variable switch 57, a fertilizer setting switch 58, increase / decrease switches 59U and 59D, and a cumulative reset switch 60 are disposed in the vicinity of the liquid crystal display unit 56 in the operation panel 55 in the figure, and these operation switch signals are transmitted from the fertilizer controller. This is a configuration input to 15A. The display content of the liquid crystal display unit 56 can display a fertilizer application set value, a specific gravity value, a memory value, and a cumulative value, and is output so as to be sequentially switched and displayed by turning on the display changeover switch 61.

  This will be described in detail based on the flowchart of FIG. When the controller 15 is turned on by operating the key switch of the machine body, all the display segments are lit for a predetermined short time (steps 101 to 103, FIG. 10 (1)), and then the cumulative feed amount stored in the nonvolatile memory 63 Is displayed for a predetermined time (steps 104 and 105, FIG. 10 (2)). Further, when the predetermined time has elapsed, the stored set fertilizer amount (kg / 10a) is displayed (step 106, FIG. 10 (3)), and becomes the input value at the time of factory shipment or the value set at the end of the previous work. Different numerical values are displayed depending on the change settings as appropriate (FIG. 10 (4)). After that, according to the operation of the display changeover switch 61, the specific gravity → memory mode → cumulative feed amount can be repeatedly displayed (step 107 to step 111. FIGS. 10 (5), (6), (2)). The fertilization amount is an integer display and can be set by operating the increase / decrease switches 59U and 59D. The specific gravity (kg / 1000 cm 3) is displayed in two digits after the decimal point ((4)), and can be set to a large or small value by using the increase / decrease switches 59U and 59D.

  The display of the memory mode (FIG. 10 (6)) is configured to display the memory number set in the memory mode described later. The cumulative feed amount display (FIG. 10 (2)) is configured to calculate and display the cumulative feed amount after the cumulative amount is reset to 0 by the cumulative reset switch 60. Although the calculation means and the like will be described later, the cumulative feed amount is written and stored in the nonvolatile memory 63 after the power to the controller 15 is turned off, that is, the key switch 62 is turned off.

  In addition to the above, when a stop abnormality or rotation abnormality of the roll drive motor 24 is detected, the currently selected display item is alternately displayed for several seconds, and the error display (FIG. 10 (7)) is alternately displayed for several seconds. FIG. 10 (8) is a display that appears when the emergency operation mode is entered, and the fertilizer application amount setting value display is made by turning on the key switch 62 while pressing the variable switch 57. FIG. 10 (9) is a display of the system setting mode described later, a display when the fertilizer setting switch 58 is kept pressed when the key switch is turned on, and FIG. 10 (10) is a display when the communication operation mode is entered. The display can be switched by turning on the key switch 62 while pressing the display switch 61.

The fertilizer controller 15A incorporates six different control modes. That is, an automatic mode, a variable mode, a memory mode, an emergency operation mode, a system setting mode, and a communication operation mode (FIG. 9).
(auto mode)
If the key switch 62 is simply turned on without selecting and setting the various setting modes, the automatic mode is entered. In this automatic mode, a motor rotation output pulse (roll drive motor rotation signal) is sent to the motor controller 15B that drives the roll of the feeding device 11 in accordance with the fertilizer application set value and the vehicle speed so that the fertilizer application amount per unit area becomes constant. ) Is output.

  Before starting work, turn on the fertilizer setting switch 58 to display the currently set fertilizer amount (counter-attack fertilizer amount (kg)) and check whether the fertilizer amount is suitable for the work to be done. When the change is made in units of 1 kg by the switch 59U or the decrease switch 59D and the fertilizer setting switch 58 is turned on again for a predetermined time (for example, 2 seconds or more), the value A (kg) is stored (FIG. 12, step 201).

  Next, specific gravity is set (step 202). When the display changeover switch 61 is turned on and “specific gravity” is selected, the current set value is displayed. It is confirmed whether or not the specific gravity value is suitable for the work to be performed. If the specific gravity value is different, it is changed in increments of 0.01 by the increase switch 59U or decrease switch 59D. When turned on, the value D (g / cm3) is stored.

  As described above, which roll of the feeding device 11 is used, that is, the roll type, is determined depending on whether the fertilization amount A falls within a preset range of large, medium, or small. In the case of the present embodiment, when the fertilization amount is determined (steps 202 to 205), the rotation direction of the roll drive motor 24 is determined. That is, when the fertilization amount A corresponds to a large application amount of, for example, a1 (eg, a1 = 25 kg) or more, the roll drive motor 24 is operated so that the first roll 20a, the second roll 20b, and the third roll 20c are operated. A normal rotation signal is output (steps 206 and 208).

  Similarly, when the fertilizer application amount A corresponds to a medium application amount of a2 ≦ A ≦ a1 (for example, a2 = 5 kg), a reverse rotation signal is output to the roll drive motor 24 so that the third roll 20c operates (step 204). 207).

  A reverse rotation signal is output to the roll drive motor 24 so that the fourth roll 20d operates even when the fertilization amount A corresponds to a small application amount of A <a2 (steps 205 and 207). In addition, although the same motor reverse rotation signal is output as the middle spray amount, the feed spatter from the feeding device 11 is determined depending on whether the spatter is stored in the section A or the section B (step) 208, 209).

  As described above, the roll type 1, type 2 or type 3 is determined and set to the driving state by changing and setting the combination of feed rolls to be used so that the feed amount varies depending on the spread amount setting of the spread material. Is done.

  In the above embodiment, the roll drive shaft 21 after the roll type determination is driven differently by forward rotation or reverse rotation, and the feeding amount by the feeding device 11 is set and changed. However, for each of a plurality of coaxial core roll driving shafts. Provide feed rolls with different feed amounts, and output a motor to drive the roll drive shaft that connects the roll corresponding to the roll type determined by the setting of the spread amount, or replace it with multiple drive motors and clutch You may comprise so that a required roll may be driven by selecting a required clutch through a mechanism.

  Further, in this embodiment, the tank type is divided into compartment A and compartment B and the roll type is selected and set. However, the roll drive shaft 21 may be rotated, stopped, or selected only in the direction of rotation. .

After the determination of the motor driving rotation direction is made as described above, the roll rotation speed is determined after inputting the vehicle speed signal and determining the set specific gravity (steps 210 to 212).
That is, when the set fertilizer application amount A (kg / 10a) and specific gravity D (g / cm3) are used, and the roll rotation speed Rb (min-1),
A = 1000 × {2 × (C × D / 1000) × Rb} / (60 × W × S)
= (2 × C × D × Rb) / (60 × W × S)
It becomes. Here, W is a spreading width (m), S is a working speed (vehicle speed) (m / sec), and C is a roll volume (cm3 / rev). Therefore, the roll rotation speed Rb is
Rb = (A × 60 × W × S) / (2 × C × D)
= (A × W × S × 30) / (C × D)
Is calculated by

Here, as for the vehicle speed S, a vehicle speed detection gear 66 is disposed on a traveling system transmission shaft 65 provided in the transmission case 6 of the passenger management machine 2, and the number of pulses associated with the irregularities on the outer periphery is detected by a pickup sensor 67. While outputting to the controller 15C, the sensor output is transmitted to the fertilizer controller 15A, using the slip ratio α and the tire coefficient K1 related to the tire diameter,
S = z * n * (1- [alpha]) * K1
Is calculated by Note that z is a constant, and n is the number of detected pulses.

  The roll speed Rb calculated by the fertilizer controller 15A based on the vehicle speed S and the like as described above is output to the motor controller 15B, and the roll drive motor 25 is rotationally interlocked based on the calculated value.

  Note that when the vehicle speed S reaches a specified value due to the start of airframe travel, a motor rotation output pulse (roll drive motor rotation signal) is output. Even during traveling, when the spray switch 69 is turned off or the fan switch 70 is “OFF”, the output of the motor rotation output pulse (roll drive motor rotation signal) is stopped. Further, when the vehicle speed becomes high and the calculated motor rotation number exceeds a preset upper limit value, the buzzer 71 is turned on intermittently with a long sound.

  While the motor rotation output pulse (roll drive motor rotation signal) is being output, the set value and the accumulated fertilizer amount are stored in the E2PROM every time it is changed, and the accumulated fertilizer amount immediately after the power is turned off by key-off detection is written and stored.

  FIG. 14 is a time chart of the motor reverse rotation process. When the fertilizer application amount setting value A is in a small range, for example, 25 kg or less, the motor rotation direction is switched, and the motor rotation direction switching output that reversely rotates the roll drive motor 25 is turned on. This motor rotation direction switching output remains on until the fertilizer application set value exceeds the small amount range regardless of the output of the motor rotation output pulse (roll drive motor rotation signal) or the output stop.

When the set fertilizer amount is changed while the motor rotation output pulse (roll drive motor rotation signal) is being output and the range is changed from a small amount range to a range exceeding this (or vice versa), the motor rotation output pulse is left unchanged. The output of the (roll drive motor rotation signal) is stopped, and the rotation direction switching output and the motor rotation output pulse (roll drive motor rotation signal) are output again after a predetermined short time (for example, 100 msec).
(Variable mode)
While working in the automatic mode with the fertilizer amount set in advance as described above, the fertilizer amount setting is temporarily changed. When the variable switch 57 is turned on, the variable mode 57 is entered, and the variable switch 57 is turned on again. Turning it on ends the variable mode and returns to the automatic mode.

The variable lamp 72 is turned on during the variable mode period.
In order to change the fertilizer application amount, the fertilizer application switch 58 is turned on to display the present fertilizer application amount (counter-contact fertilizer application amount (kg)), and the fertilizer application amount in the variable mode is 1 kg by the increase switch 59U or the decrease switch 59D. When the fertilization setting switch 58 is turned on again for a predetermined time or longer (for example, 2 seconds or longer), the changed fertilization amount value A ′ is stored. The changed setting value is set only during the variable mode period, and writing to the E2PROM is not performed.

Moreover, the roll rotation control by the changed fertilizer application amount A ′ is configured according to the automatic mode.
Even during the variable mode, when the fertilizer application amount setting value is within the predetermined small amount range, the motor rotation direction switching is turned on and the following restrictions are provided. That is, when the display indicator is switched by the display changeover switch 61 during the variable mode, unlike the normal mode, only the fertilizer application amount setting and cumulative switching are performed, and the specific gravity and memory are not displayed. The inside is not configured to shift to the memory mode (FIG. 15).
(Memory mode)
As the field data, the set fertilizer application amount A and specific gravity D are stored in advance in the E2PROM as a set, and the data are read and set during work.

The vehicle speed interlocking control for the changed fertilizer application amount follows the automatic mode.
When the display selector switch 61 turns on the memory indicator, the field code “H-01” is displayed on the liquid crystal display unit 56, and when the increase / decrease switches 59U and 59D are pressed, the display value increases or decreases by one unit. When setting to a predetermined field code, it is executed by pressing the fertilizer setting switch 58 for a predetermined time, for example, 2 seconds or more.

  It should be noted that when the fertilizer application amount setting, specific gravity and cumulative indicators are not lit during the memory mode, pressing the fertilizer setting switch 58 for a predetermined time, for example, 2 seconds or more, ends the memory mode and returns to the normal mode.

  After the digital LCD is changed to fertilizer amount setting and specific gravity with the display changeover switch 61 during the memory mode, the set value can be changed with the increase / decrease switches 59U and 59D in the same manner as the automatic mode.

Even during operation in the memory mode, it is possible to shift to the variable mode by operating the variable switch 57 and to change the fertilizer application setting.
(Emergency operation mode)
When the vehicle speed pulse signal is not input from the machine controller 15C, the motor rotation output pulse (roll drive motor rotation signal) is output to the motor controller 15B by shifting to the emergency operation mode, and the fertilization work can be performed. (FIGS. 16 and 17).

The transition to the emergency operation mode is performed by turning on the key switch while pressing the variable switch 57.
Regardless of whether the machine is running or stopped, a motor rotation output pulse (roll drive motor rotation signal) is output. Here, the fertilizer controller 15A calculates the roll rotation number from the fertilizer application amount setting value as in the automatic mode, and determines the motor rotation output pulse (roll drive motor rotation signal), but instead of the vehicle speed at the time of calculating the roll rotation number. And using a fixed value S ′ stored in advance.

  Therefore, even if a vehicle speed pulse is input, it is ignored and a motor rotation output pulse based on the fixed value S ′ is output. When the calculation result is out of the roll rotation speed range, the motor rotation output pulse is based on the upper limit value and the lower limit value of the roll rotation speed.

  The fertilizer application amount and specific gravity can be set by the same operation as in the automatic mode. However, the set value is effective only in the emergency operation mode, and writing to the E2PROM is not performed. If no switch operation is performed for a predetermined time (for example, 1 second) after the set value is changed, the value is displayed as a fertilizer application set value, and the motor rotation speed is changed.

The presence or absence of regular input of the vehicle speed pulse signal can be automatically determined as follows in addition to the determination based on the difference between the vehicle speed on the vehicle speed indicator and the operator's bodily sensation vehicle speed.
The example shown in FIG. 18 tries to determine the presence / absence of a vehicle speed pulse by automatically detecting the presence / absence of connection between the vehicle speed sensor and the main unit controller 15C. A signal with a sensor is attached to the vehicle speed sensor, and the signal is read as an input with the vehicle speed by the controller.When the vehicle speed sensor is not installed, the feed speed is calculated with the vehicle speed as a fixed value, and the motor output is performed. is there. If comprised in this way, since it can enter emergency operation mode by removing a vehicle speed sensor, even if a vehicle speed sensor is out of order, spraying can be continued.

  Further, in the example shown in FIG. 19, when the vehicle speed sensor is abnormal and the vehicle speed detection is not normally performed, when returning with a temporary one, the work performance is not deteriorated by not following the rotation speed change, When an abnormality continues, the operator can take appropriate measures by notifying with an alarm.

As described above, when the vehicle speed sensor is not provided or there is an abnormality in the vehicle speed sensor, a fixed value is given to the controller instead of the vehicle speed data, and the spraying operation can be continued. Even during the continuous spraying operation, the accumulated fertilizer application amount is output to the liquid crystal display unit 56 for display. The calculation of the accumulated fertilizer amount is as described later.
(System setting)
In the mode for setting “spreading width”, “tire diameter”, “slip rate”, etc. when calculating the motor rotation output pulse period from the fertilizer application setting value and specific gravity, press the key switch while pressing the fertilizer setting switch 58. It is configured to shift by turning on.

The spreader width, tire diameter, and slip ratio are set by setting the liquid crystal display unit 56 to the fertilizer application amount setting indicator, specific gravity indicator, and memory indicator, respectively, in accordance with the operation of the display changeover switch 61, and by operating the increase / decrease switches 59U and 59D. The configuration can be changed to a predetermined set value.
(Communication operation mode)
A fertilizer amount set value is input to the controller 15 by communication data from the outside of the controller 15 and fertilization work is performed by the set value, and a transition is made by pressing the display changeover switch 61 to turn on the key switch.

Next, common rotation speed abnormality during each mode operation will be described.
The set roll rotation number (Rc) calculated from the fertilizer application set value and the vehicle speed or the like is compared with the detected roll rotation number (Rn) calculated every predetermined time from the motor rotation pulse. For example, if the following state continues for a predetermined time, the motor It is configured to determine a stop abnormality or a motor rotation abnormality. The coefficient can be changed and set as appropriate.

Rc × 1.1 <Rn
Rc × 0.9> Rn
However, the determination is not performed for a predetermined time (for example, 1 second) after turning on the motor rotation output pulse at the start of spraying, and for a predetermined time (for example, 1 second) after changing the fertilizer application amount setting value during spraying. , Preventing misjudgment.
(Cumulative fertilizer display)
The feed amount actually fed is calculated based on the rotation pulse of the feed motor from the motor controller and the type of roll, and is displayed on the liquid crystal display unit 56 as a cumulative value.

The roll rotation speed Rd (times / minute: rpm) is calculated by the following equation. That is,
Rd = 60 / td
Here, td is one roll rotation time (second), and the number of rotation pulses of the feeding motor is counted to determine one rotation of the fertilizer roll. For example, pulses per rotation of the roll drive motor 25 When the number is p and the roll reduction ratio is 1 / Z, one roll rotation = p × Z (pulse).

The td is the time (seconds) required for this p × Z (pulse).
And theoretically, letting the feed amount Q (kg) per rotation of the roll,
Q = D × Cn / 1000
(D is specific gravity (g / cm 3), C is roll volume (cm 3 / rev)).

However, since the granular fertilizer enters the feed roll 20 from the hopper and fluctuates depending on the number of roll rotations, it is necessary to remove the influence of the correction amount {(cf / Cn) × Rd}. cf is a correction coefficient, and (cf / Cn) is a constant set for each type of feeding roll 20. n corresponds to the roll types 1, 2, and 3 (= 1, 2, or 3), and C1, C2, and C3 are constants set for each roll type.
And considering this,
Q = D * Cn * {1- (cf * Rd) / Cn} / 1000
= D * (Cn-cf * Rd) / 1000
It becomes.

Furthermore, if the cumulative feed amount QT (kg) is the cumulative feed amount Q ′ (kg) up to the previous time,
QT = QT ′ + 2 × {D × (Cn−cf × Rd) / 1000}
It becomes. This cumulative feed amount is stored in the nonvolatile memory 63 at the timing when the controller 15 is turned off, that is, when the key switch 62 is turned off. The controller 15 is configured so that the electrical function can be continued for a predetermined time by the function of the capacitor when the power of the controller 15 is turned off, and the power supply during storage in the nonvolatile memory 63 can be secured.

In the above formula, the constant 2 is a numerical value for providing the left and right tanks 10 and 10 and the feeding mechanisms 11 and 11. Therefore, when spraying on one side,
QT = QT ′ + × {D × (Cn−cf × Rd) / 1000}
In other words, the calculation is performed by multiplying by a factor of 1/2. Whether or not one-side spraying is performed is based on the one-side detection result of the one-side spray detection means 70 provided within the operating range of the left and right boom spray levers 29L and 29R. Specifically, each of the left and right boom spray levers 29L and 29R is provided with a limit switch type detection unit on the stop operation side, and one of the limit switches is detecting the lever 29L or 29R. It becomes.

By the way, the display of the cumulative feed amount is displayed on the liquid crystal display unit 56 as described above, but it is convenient to configure as described above.
That is, when the key switch 62 is turned on and the cumulative feed amount QT is stored in the nonvolatile memory 63, the content is displayed on the liquid crystal display unit 56 for a predetermined time. With this configuration, it is possible to prevent the confirmation of the cumulative feeding amount and to optimize the display of the cumulative cleaning value during work. It should be noted that the display may be omitted when the cumulative feed amount stored by operating the cumulative reset switch 60 at the end of the previous work is zero.

  When the vehicle speed information of the airframe is not input, the roll rotation speed is obtained by applying a preset fixed value in order to continue spreading. It is possible to check the standard of the amount of spraying, but since the rotation speed of the roll drive motor 25 is detected and the roll rotation speed is calculated, the cumulative feed amount is calculated regardless of the fluctuation of the speed of the traveling machine body. it can.

Top view of a passenger management machine equipped with a granular fertilizer Rear view of a passenger management machine equipped with a granular fertilizer Plan view of feeding device of granular fertilizer Top view of tank section of granular fertilizer Side view of feeding device of granular fertilizer Operation panel top view Overview diagram showing an example of controller connection Control block diagram of fertilizer controller flowchart It is a figure which shows an example of a display of a liquid crystal display part. (1)-( 10 ) flowchart flowchart Time chart Time chart Time chart Time chart flowchart flowchart flowchart

10, 10 Tank 15A Fertilizer controller (roll type determining means, feeding roll rotation speed calculating means)
15B motor controller 15C machine controller 20a feeding roll 20b feeding roll 20c feeding roll 20d feeding roll 21 roll drive shaft 25 roll drive motor 58 variable switch (spraying amount setting means)
59U increase switch (spraying amount setting means)
59D decrease switch (spraying amount setting means)
62 Key switch 63 Non-volatile memory 70 One-side scatter detection means

Claims (4)

The tank (10) for storing the sprayed granule is provided with a partition wall (10a) and divided into two compartments (A, B). A plurality of circumferentially extending recesses having the same capacity are provided below the tank (10). The formed first roll (20a), the second roll (20b) in the same form as the first roll (20a), the third roll (20c), and the fourth formed with a shorter depth than these rolls and with a shallower recess. A roll (20d) is provided, of which the first and second rolls (20a, 20b) are mounted on the roll drive shaft (21) via the one-way clutch (22, 22), and the third roll (20c) and the fourth roll The roll (20d) constitutes a feeding device 11 integrally attached to the roll drive shaft (21),
Of the two sections, one section (A) corresponds to the first to third rolls (20a to 20c), and the other section (B) corresponds to the fourth roll (20d).
When the roll drive shaft (21) is connected to a roll drive motor (25) for forward / reverse drive, and the roll drive shaft (21) rotates forward, the first and first ones are operated in conjunction with the one-way clutch (22, 22). When the two rolls (20a, 20b) are driven and the roll drive shaft (21) reverses, the first and second rolls (20a, 20b) are stopped.
The feeding rolls (20a, 20b, 20c, 20d) are driven to be fed at a preset number of revolutions corresponding to the magnitude of the set spreading amount of the spreading amount setting means (58, 59U, 59D),
A controller (15) is provided for calculating the number of revolutions of the feeding rolls (20a, 20b, 20c, 20d) from the set spread amount information and vehicle speed information output by detecting the rotation of the traveling transmission unit of the traveling machine body;
In a spraying device such as a granular fertilizer provided with a roll drive motor (25) for normal rotation or reverse rotation of the roll drive shaft (21) at this feeding rotational speed,
Means are provided for calculating a cumulative feed amount based on the cumulative number of revolutions of the feed roll and a predetermined feed amount for each unit rotation of the feed roll, and detecting that the controller (15) has been switched from power on to power off. A spraying device for granular fertilizer or the like configured to write the cumulative feed amount into a nonvolatile memory (63).   The spraying device for granular fertilizer or the like according to claim 1, wherein when the power to the controller (15) is turned on, the cumulative feed amount stored in the nonvolatile memory is displayed and output on the display unit (56) for a predetermined time.   A pair of left and right feeding devices (11, 11) operated by the driving means (25) are provided, and the feeding devices (11, 11) are provided between the pair of feeding devices (11, 11) and the driving means (25). Clutch means (28L, 28R) that are driven or not driven separately are provided, and one-side spray detection means (70) that detects the one-side spray state by the clutch means (28L, 28R) is provided. The spraying device for granular fertilizer or the like according to claim 1 or 2, wherein a coefficient for calculating a feed amount is set to ½. Means for detecting whether or not the vehicle speed information of the traveling machine body input to the controller (15) is abnormal is provided, and in the event of an abnormality, a vehicle speed substitute value is given to continue the spraying operation, and the cumulative feeding is continued even during this operation continues The spraying device such as granular fertilizer according to any one of claims 1 to 3 , wherein the amount is calculated and displayed.

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