JP5487724B2 - Traveling spreader - Google Patents

Description

  The present invention relates to a traveling sprayer that sprays granular materials such as granular fertilizers and herbicides contained in a tank to a farm field by using a discharge pipe while feeding the powder and granular materials.

  Conventionally, a traveling spreader that is provided with a spreading boom supported at the front part of the machine body so as to be able to roll right and left, and can incline the spraying direction of the granular material sprayed from the spreading boom forward or rearward with respect to the vehicle width direction. It has been known.

  The invention described in Patent Document 1 is a traveling spreader that uses a plurality of feeding rolls to spread granular materials according to the traveling vehicle speed of the aircraft, and is within the limit range even if the set amount of the granular materials being spread changes. Is to use the same feeding roll.

  In Patent Document 2, the traveling of the machine and the rotational drive of the drive motor of the granular material feeding roll are coordinated, and only the rotational drive of the motor can be performed when the machine is stopped. At the same time, a traveling spreader is disclosed that can carry out appropriate drug spraying.

  The invention described in Patent Document 3 describes the configuration of a traveling sprayer that stops spraying or maintains spraying while maintaining the minimum reference spraying pressure or the maximum reference spraying pressure when the vehicle speed of the aircraft deviates from the low-high speed standard. Has been.

JP 2008-2220183 A Japanese Patent No. 3438194 JP 2002-35662 A

  In the inventions described in Patent Documents 1 to 3, the rotation speed of the feeding roll is controlled in conjunction with the vehicle speed. For example, the rotation speed of the feeding roll is set in the range of the lower limit rotation 10 rpm (motor rotation speed 200 rpm) to the upper limit rotation 80 rpm (motor rotation speed 1600 rpm), but the calculated feeding roll rotation speed is equal to or lower than the lower limit rotation speed (for example, 8 rpm). ) Or above the upper limit rotation speed (for example, 85 rpm), the work is performed at the upper and lower set rotation speeds, and the work of feeding the granular material such as fertilizer is performed within a range in which the feed roll rotation does not become unstable. It is said. At the same time, it is described that the indicator displays a warning to increase or decrease the vehicle speed.

  Accordingly, an object of the present invention is to provide a traveling spreader that sprays particulate matter in conjunction with a vehicle speed that can be dispersed in a stable state in association with the vehicle speed and that can be dispersed from a feeding roll.

In order to solve the above-described problems of the present invention, the following means are adopted.
That is, the invention described in claim 1 is a plurality of feeding rolls (20) for feeding out powder particles accommodated in the granular material tank (80) by rotating, and a drive motor (25) for driving the feeding roll (20). And a powder blower (14) extending in the left-right direction of the machine body for distributing the powder fed from the feed roll (20) through the cylinder (30) and a blower for blowing air to the cylinder (30) ( 12) In the traveling spreader provided with the granular material spraying device (1) having 12) and the vehicle speed sensor (37) for detecting the traveling speed of the machine body, the rotation speed of the feeding roll (20) is determined by the vehicle speed sensor (37). When the rotational speed of the drive motor (25) of the feeding roll (20) exceeds the set upper limit in conjunction with the measured vehicle speed, the vehicle speed is automatically decelerated and the controllable rotation of the drive motor (25). Control device that controls to be within the range of numbers (15, 19) wherein the plurality of feed roll (20) is reversible so provided in series on the rotary shaft (83), a portion of the feed roll (20) side rotary shaft (83) above the Is provided via a one-way clutch (89). When the rotating shaft (83) rotates in one direction, all of the plurality of feeding rolls (20) are rotated, and when the rotating shaft (83) rotates in the other direction, a part of the feeding is performed. The roll (20) is configured to rotate, and the granular material tank (80) is configured to separately store the herbicide and the fertilizer, thereby forming a fertilizer filling port that matches the bottom opening of the granular material tank (80). A first roll case (81) is provided, and a rotary shaft (83) and the plurality of feeding rolls (20) are provided in the second roll case (82) fitted into the first roll case (81), A drive motor (on one end of the rotary shaft (83) 5), and when the drive motor (25) is removed, the second roll case (82), the rotating shaft (83), and the plurality of feeding rolls (20) are moved with respect to the first roll case (81). ) Is slidable to the side to which it was attached, and can be removed. When the second roll case (82) is removed, the first roll case (81) is placed between the granular material tank (80) and the cylinder (30). The traveling spreader is configured to have a remaining configuration, in which the herbicide is fed to the front side of the blower conveyance in the through-cylinder (30) and the fertilizer is fed to the rear side of the blower conveyance .

According to invention of Claim 1, a granular material can be uniformly distributed as it set. Further, when the rotational speed of the drive motor ( 25 ) of the feeding roll ( 20 ) exceeds the set upper limit value, the vehicle speed is automatically decelerated and falls within the controllable rotational speed range of the drive motor ( 25 ) . The operator can immediately recognize that the operating speed is outside the controllable rotation speed range of the drive motor ( 25 ) , and has the merit of being able to deal with it quickly.

Moreover, since removal of a delivery roll (20), a rotating shaft (83), etc. is easy, it is very excellent in maintainability, such as the removal | desorption operation | work of the spraying agent (fertilizer) adhering to the delivery roll (20) after completion | finish of a fertilizer spraying operation | work. Further, the second roll case (82) can be detached from the first roll case (81) from one direction.
Moreover, small amount application | coating from which feeding amount differs by forward / reverse rotation of a feeding roll (20) can be performed.
In addition, since the herbicide has a large specific gravity and is heavy, and the fertilizer for mass application is composed of a relatively light component, the herbicide is fed to the front side of the air blower in the through-cylinder (30), and the rear side It is configured to feed out fertilizer. With this configuration, clogging can be reduced .

It is a top view of the traveling spreader provided with the spreading device by one embodiment of the present invention. It is a side view of the traveling spreader provided with the spreading apparatus of FIG. FIG. 3 is a rear view (FIG. 3 (A)), a plan view (partially drawn section sectional view) (FIG. 3 (B)), and a perspective view (FIG. 3 (B). C)). It is a rear view of the traveling spreader provided with the dispersion apparatus of FIG. It is a control block diagram of the fertilizer application device of the present invention. It is a control block diagram of the GPS receiver of this traveling spreader of FIG. 1, and this machine controller. It is a flowchart of the fertilizer spreading control of the traveling spreader of FIG. It is a flowchart of the fertilizer spreading control of the traveling spreader of FIG. It is a flowchart of the fertilizer spreading control of the traveling spreader of FIG. It is a flowchart of the fertilizer spreading control of the traveling spreader of FIG. It is a flowchart of the fertilizer spreading control of the traveling spreader of FIG. It is a partial side view of the body which shows the gear shift interlock mechanism of HST of the traveling spreader of FIG. FIG. 2 is a partial rear view of the airframe showing an HST shift interlocking mechanism of the traveling spreader of FIG. 1. It is a top view which shows the operation interlocking mechanism of the vehicle speed reduction arm which fractured | ruptured a part of traveling spreader of FIG. It is a disassembled perspective view of the transmission interlock mechanism of the traveling spreader of FIG. FIG. 2 is a flowchart for controlling to automatically operate the HST to a deceleration side when the working speed of the traveling spreader of FIG. 1 is too fast and exceeds a specified value. FIG. 2 is a flowchart of a configuration in which the traveling spreader of FIG. 1 once decelerates to a predetermined vehicle speed immediately after the start of work even if the work starts at a prescribed work speed. FIG. 18A shows a main part of the granular material feeding device of the traveling spreader of FIG. 1, FIG. 18A is a side view of the feeding device, a part of which is a longitudinal section, and FIG. 18B is an arrow A in FIG. FIG. 18C is a top view of the first roll case as viewed from the direction. 1 is a side view (FIG. 19A) of a feeding device in which a part of the traveling spreader of FIG. 1 is a longitudinal section, a top view of a second roll case (FIG. 19B), and a perspective view of a partition plate (FIG. 19). (C)). FIG. 20 is a side view of the feeding device in which a part of the BB line (when a feeding roll is incorporated) in FIG. It is the side view which decomposed | disassembled and showed the 2nd roll case and drive motor of the drawing | feeding-out apparatus of FIG. FIG. 20 is a side view of a feeding device in which a part of a cross-sectional view taken along line BB in FIG. 19 (when a feeding roll is incorporated) is a longitudinal section.

Embodiments of the present invention will be described below with reference to the drawings.
First, as shown in the plan view of FIG. 1 and the side view of FIG. 2, the granular material spraying device 1 (hereinafter referred to as a fertilizer spraying device as an example of fertilizer as a granular material) It is attached to the rear part. A pair of left and right fertilizer tanks 10 and 10 are mounted on the rear portion of the body of the traveling spreader 2 which is mounted with the engine 3 at the front and appropriately shifts the engine speed to transmit the front and rear wheels 4 and 5. The granular material spraying device 1 includes the fertilizer tank 10, a feeding device 11, a blower 12, a first jet tube 13, a second jet tube (boom) 14, a control unit 15 (FIG. 5), and the like. However, illustration of the second jet tube 14 is omitted in FIG.

  FIG. 3 is a rear view (FIG. 3 (A)) and a plan view (partially drawn section sectional view) (FIG. 3 (B)) and a perspective view (FIG. 3 (C)) of a pair of left and right fertilizer tanks 10 and 10. Indicates. FIG. 4 shows a rear view of the traveling spreader 2 equipped with the granular fertilizer. Each of the pair of fertilizer tanks 10, 10 is provided with a feeding device 11 for feeding a predetermined amount of sprayed granule from the fertilizer tank 10. The feeding device 11 has a known configuration in which a plurality of rolls 20 are formed on the roll drive shaft 21, and a plurality of feeding recesses are formed in the circumferential direction with the same capacity. The first roll 20a and the second roll 20b have a long axial length, and the third roll 20c and the fourth roll 20d have a short axial length.

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

On the other hand, the fertilizer tank 10 includes a partition wall 10a having a U-shape in plan view, and a section A (FIG. 3 (C)) and a third roll 20c corresponding to the first roll 20a and the second roll 20b of the feeding device 11 The partition wall 10a is divided into sections B (FIG. 3C) corresponding to the fourth roll 20d. The section A is provided for use as a general fertilizer, and the section B is provided for use as a herbicide requiring a small amount of application. Accordingly, when the roll drive shaft 21 rotates in the forward direction, the first roll 20a and the second roll 20b are rotated and interlocked, and the granule in the section A is set in a large amount feeding state. When the roll drive shaft 21 rotates in the reverse direction, only the second roll 20b in the section A is rotated. It will be in the extended state. Note that when the herbicide is introduced into the section B, the feeding amount is different in the forward and reverse directions, and in particular, only a small amount of the third roll 20c is sprayed by reverse rotation.
A pair of left and right roll drive shaft 21 and 21 roll drive motor 2 5L provided in each is independently configured to be rotated at 25R, these motors 25L, 25R is in the configuration of the interlocking forward and reverse switching .

  Below the pair of feeding devices 11, 11, through-cylinders 30, 30 whose rear sides are extended obliquely inward with respect to the advancing direction of the machine body are looked into. The air cylinder 31 (FIG. 2) provided with the device 12 is communicated. The other downstream end of each through-cylinder 30, 30, that is, the front side of the machine body is configured to communicate with the first injection tube 13.

  The blower 12 is constituted by a blower fan 12a that is linked to the PTO shaft 32 of the traveling spreader 2 via an electromagnetic clutch 12b, and the blast enters the through-cylinder 30 via the blower cylinder 31 and feeds fertilizer. It is the structure which carries on airflow and reaches the 1st jet tubes 13 and 13.

  The left and right first jet tubes 13 are arranged in a space between the fertilizer tank 10 and an occupant seat 33 provided on the upper part of the traveling spreader body. The second injection tube 14 is connected to the left and right first injection tubes 13 via a bellows tube 40 so as to be inclined.

  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 projects sideways from the arm body 43 from the machine frame side. An electric telescopic cylinder 45 is interposed between the support bracket 34 and the second support tube 34. The second jet tube 14 is laterally expanded to be in a working posture by shortening the electric motor 46 by forward rotation, and is extended by reverse rotation. It is the structure which accommodates the jet tube 14 in the state along an airframe. A bracket 35 is provided on the airframe to support a rotation fulcrum around the vertical support shaft 44 by the electric telescopic cylinder 45.

  With the reverse rotation of the electric motor 46, when the second jet tube (boom) 14 is stored in a state along the fuselage, the pivotal fulcrum around the vertical support shaft 44 is disposed at a position approaching the fuselage side, so that the retracted state is achieved. Since the second jet tube 14 can be brought closer to the machine body side, it can be stored inside a lifting step 36 provided on the machine body side in a plan view, and can be easily moved up and down to the machine body during storage.

  The electric telescopic cylinder 45 and the electric motor 46 are disposed between the rear wheel 5 and the fertilizer tank 10. Although the mud is splashed up during traveling, it is located inside the rear wheel 5 and can be avoided from the jumping-up location, and it is difficult to cause adverse effects due to mud adhesion to the electric telescopic cylinder 45 and the electric motor 46.

  The cylindrical body 42 is provided with a lateral support shaft 47, and the second jet tube (boom) 14 is connected via the lateral support shaft 47, and moves around the lateral support shaft 47 in addition to the movement to the storage posture. It is the structure which can be rotated up and down by rotating. That is, electric telescopic cylinders 48L and 48R are provided between the mast portions 18 and 18 (FIG. 4) standing on the left and right first jet tubes 13 and 13 and the second jet tubes 14L and 14R, respectively. Based on the expansion and contraction of the cylinder 48, the second injection tube 14 can be rotated up and down around the lateral support shaft 47 with respect to the machine and can be operated in a rolling manner.

  Further, the left or right second jet tubes 14L and 14R can be switched to the vertical posture (non-working posture) or the horizontal posture (working posture) based on the operation of the operation lever not shown at hand. The second nozzle tube 14 is formed with nozzle holes 50, 50... Having a predetermined diameter at predetermined intervals.

Next, the fertilizer application control unit 15 of the fertilizer spraying device 1 having the above configuration will be described.
As shown in the control block diagram of FIG. 5, the fertilizer application control unit 15 (connected to the controller 19 of this machine) has a spray switch 51 (the function will be described later) on each of the roll drive motors 25L and 25R. The operation information, the driving information of the blower fan 12a by the fan switch 52, the detection signal of the remaining amount sensor 54 provided in the fertilizer tank 10 and the like are input, while the motor rotation output pulse signal and the motor rotation are respectively input to the roll drive motors 25L and 25R. A direction switching signal or the like is output.

  When the spray switch 51 is turned on, the rotation output pulses of the left and right motors 25L and 25R are driven at the preset minimum number of rotations regardless of whether the vehicle speed is present or not, and after a while, the vehicle speed is properly input. The rotation of the motor is controlled so as to be linked to the vehicle speed. Therefore, even if it is in a stopped state at the start of work, a small amount of spraying can be performed and the non-spraying section can be eliminated. The fertilizer application control unit 15 is connected to the machine controller 19 (FIG. 6) of the traveling spreader 2 so as to receive GPS speed data and speed data from the vehicle speed sensor 37 described later.

  Further, the fertilizer application control unit 15 inputs information on switches disposed on the operation panel 26. As shown by the control block in FIG. 5, a variable switch 57, a fertilizer setting switch 58, increase / decrease switches 59U and 59D, and a cumulative reset switch 60 are arranged in the vicinity of the liquid crystal display unit 56 on the operation panel. The switch signal is configured to be input to the fertilizer application control unit 15. The display content of the liquid crystal display unit 56 can display the fertilizer application amount setting value, specific gravity value, memory value, and cumulative value related to the application of the fertilizer (or herbicide). It is output accordingly.

  The automatic (control) mode is activated by input to the fertilizer application control unit 15. That is, when the key switch 62 (FIG. 5) is turned on and the spray switch 51 is turned on, the automatic mode is entered. In this automatic mode, each of the roll drive motors 25L and 25R that drives the roll 20 of the feeding device 11 in accordance with the fertilizer application amount setting value and the vehicle speed so that the fertilizer application amount per unit area is constant, The rotation signal of the roll drive motor 25 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.

Next, the specific gravity is set. 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 / cm ³ ) is stored.
Thereafter, the fertilizer application control unit 15 is configured to perform the feed amount control of the feed device 11 necessary for spraying the set fertilizer amount while taking in the vehicle speed data. The feed amount increase / decrease control is performed by controlling the rotation speed of the feed roll 20 by the fertilizer application amount calculation means 17.

  The left boom spray lever 53L and the right boom spray lever 53R allow the left and right second spray pipes 14L and 14R to spray fertilizer or herbicide, respectively. Move to the position to be sprayed.

  3 includes the first and second large rolls 20a and 20b, and the third and fourth small rolls 20c and 20d, and improves the feedability of the particulate matter in the through-cylinder 30. The improved configuration shown is shown. That is, the large rolls 20a, 20b and the small rolls 20c, 20d can be sprayed simultaneously. At this time, the partition wall 10a in the fertilizer tank 10 is filled with a small amount of herbicide and the fertilizer tank 10 is filled. Is filled with a large amount of fertilizer. Since the herbicide has a large specific gravity and is heavy and the fertilizer applied in a large amount is composed of a relatively light specific component, the herbicide is fed to the front side of the blower conveyance in the through-cylinder 30 and the fertilizer is fed to the rear side. It is configured as follows. With this configuration, clogging can be reduced.

  As shown in FIG. 6, a GPS receiver 67 is connected to the machine controller 19 of the traveling spreader 2. The GPS receiver 67 receives signals from a plurality of GPS satellites, stores the signals as current position data of the traveling spreader 2, and updates the current position data at predetermined time intervals measured by a clock circuit while determining the movement distance. The vehicle speed is calculated by the vehicle speed calculation means 16 in the controller 19 of the machine controller 19 so that the speed, that is, the vehicle speed, is calculated every predetermined time by the clock circuit.

  In the fertilizer spreading device 1 that is mounted on the traveling spreader 2 and spreads the fertilizer in conjunction with the vehicle speed, roll according to the set fertilizer amount and vehicle speed, specific gravity of the spray agent, spread width setting, unit discharge amount of the roll 20 for feeding, etc. When the number of rotations of 20 is calculated, and two sets of the rolls 20a to 20d are provided on the left and right, and the respective rolls 20a to 20d are individually driven by the motors 25L and R to perform the rotation number control, The GPS receiver 67 and the vehicle speed sensor 37 are mounted, and the speed information obtained from the GPS receiver 67 is converted into the vehicle speed by the vehicle speed calculation means 16 by connecting the fertilizer control unit 15 of the fertilizer and the machine controller 19. It is used for calculation of roll rotation speed, and it is set as the structure which calculates and uses the vehicle speed with the signal from the vehicle speed sensor 37 until the speed information from GPS is obtained at the time of a driving | running | working start.

  The GPS receiver 67 can obtain vehicle speed information and position information from GPS. At this time, the second jet tube (boom) 14 is spread to the left and right to spread fertilizer and the like. The power of the blower fan 12a that transports the fertilizer and the like is taken from the PTO shaft 32 of the traveling spreader 2, and the fertilizer application amount setting value Based on the above, the rotation speed (rotation speed) of the fertilizer feeding motor 25 is changed according to the vehicle speed of the traveling spreader 2.

  When vehicle speed data from the GPS receiver 67 cannot be obtained during the fertilizer application, the pulse output of the vehicle speed sensor 37 that outputs a vehicle speed pulse by counting the number of gear teeth incorporated in the traveling transmission shaft in the transmission case of the vehicle body is used. Read the vehicle speed and use it to calculate the roll speed.

When the speed can be calculated from the GPS position information, the vehicle speed obtained by the vehicle speed sensor 37 is corrected, the correction value (VS ′) is obtained from the following equation, and the vehicle speed obtained from the speed information from the GPS is obtained. Use.
VS ′ = N × K × (1−VS / VG)
Here, N is the number of rotations of the wheel, K is a coefficient, VS is a measured vehicle speed value (average value) by the vehicle speed sensor 37, and VG is a vehicle speed obtained by GPS.
Here, (1-VS / VG) represents a slip state in which the wheel is rotating but the fertilizer application device 1 does not move forward, and (1-VS / VG) × 100 is the slip rate.

  FIG. 7 shows a flowchart for the rotation output control of the fertilizer feeding motor 25 during the vehicle speed control in the above case. In addition, in the flowchart of FIG. 7 and the like, “roll judgment” indicates in advance which of the rolls 20a to 20d in FIG. 3 is used in order to change the fertilizer feed amount according to the set fertilizer application amount. This is a step to identify it.

In this way, even if vehicle speed data from GPS cannot be obtained while fertilizer is being sprayed, as soon as the fertilizer spray switch 51 is turned on until the GPS receiver 67 captures and speed calculation can be performed from the GPS position information, Further, fertilizer application work can be performed based on the measured value of the vehicle speed sensor 37.
Further, the average value obtained from the vehicle speed data from the GPS receiver 67 and the average value of the vehicle speed data obtained from the vehicle speed sensor 37 are compared to obtain a correction coefficient (slip rate), and the corrected vehicle speed is based on the correction coefficient. The roll speed can be controlled with high accuracy at the vehicle speed.

Note that when the vehicle speed information cannot be obtained from the GPS even after a certain time has elapsed, the buzzer 63 outputs an abnormality alarm.
If the vehicle speed information from the GPS cannot be obtained during the fertilizer application, the previous vehicle speed data stored in the memory of the control device 15 is read, and the rotation speed of the feeding roll 20 is determined based on the vehicle speed data. By calculating, it becomes possible to continue work even when speed information from GPS cannot be obtained during fertilizer application.
The vehicle speed data up to the previous time is vehicle speed data in which the vehicle speed when the vehicle speed is calculated from the speed information from the GPS receiver 67 during the fertilizer application is stored in the memory.

  Alternatively, the vehicle speed information from the GPS may be stored in the memory, and the calculated vehicle speed from the vehicle speed sensor 37 when the speed information from the GPS cannot be obtained may be corrected. In this case as well, it becomes possible to continue the fertilizer application even if the speed information from the GPS cannot be obtained during fertilizer application, and the calculated speed from the vehicle speed pulse is corrected with the stored GPS speed information. This improves speed accuracy.

  When the speed information from the GPS is obtained, the corrected vehicle speed is naturally obtained in consideration of the vehicle speed data from the GPS. FIG. 8 shows a flowchart for controlling the rotation output of the fertilizer feeding motor 25 during vehicle speed control in this case.

  As described above, the vehicle speed is calculated based on the slip ratio obtained by (1−VS / VG) × 100, and when the vehicle speed is calculated by the vehicle speed sensor 37, the vehicle speed is calculated using the slip ratio. Highly accurate vehicle speed can be calculated.

  The slip ratio is calculated from an average value (VGA) of speed information from GPS and a vehicle speed measurement value (VS) from a vehicle speed pulse at regular intervals, and the calculated speed from the vehicle speed sensor 37 is corrected with the calculated value. With this, more accurate vehicle speed can be obtained. FIG. 9 shows a flowchart for calculating the motor rotation output of the fertilizer feed roll 20 after the slip ratio is obtained.

  As described above, since the speed from the GPS speed information is not used as it is, it can be configured with an inexpensive GPS receiver 67, and when the GPS speed information cannot be detected or the influence of error fluctuation can be reduced.

Further, when the slip ratio becomes a certain value (for example, 20%) or more, the vehicle speed is calculated by replacing it with the certain value. This is because the slip rate is large and the speed changes (the vehicle speed becomes slow), so that the fertilizer application amount proportional to the vehicle speed is not appropriate. Therefore, by limiting the slip ratio, it is possible to suppress a large speed change and suppress a large fluctuation in the roll rotation speed.

  When vehicle speed information from GPS cannot be obtained during fertilizer application in consideration of the slip ratio, an alarm is issued by the buzzer 63 to obtain the vehicle speed at a predetermined slip ratio, and the vehicle speed is Determine fertilizer amount based on FIG. 10 shows a flowchart for controlling the rotation output of the fertilizer feeding motor 25 during vehicle speed control in this case.

  Although the vehicle speed information can be obtained from the GPS even during fertilizer application, if the signal from the vehicle speed sensor 37 cannot be obtained for a certain time or more, an alarm is given to the operator that the vehicle speed sensor 37 is abnormal. The buzzer 63 notifies the abnormality and determines the amount of fertilization based on the vehicle speed obtained from the GPS. FIG. 11 shows a flowchart for controlling the rotation output of the fertilizer feeding motor 25 during vehicle speed control in this case. As shown in the flow of FIG. 11, if the vehicle speed sensor 37 has a failure, the vehicle speed is obtained without calculating the slip ratio thereafter.

  In the flow shown in FIG. 10 and FIG. 11, since the operator can know the abnormality by issuing an alarm with the buzzer 63, it is possible to know the subsequent fertilizer application work state and take countermeasures.

  Conventionally, in this kind of traveling spreader 2, the rotation speed of the feeding roll 20 is controlled in conjunction with the vehicle speed. For example, the rotation speed of the feeding roll 20 is set in the range of the lower limit rotation 10 rpm (motor rotation speed 200 rpm) to the upper limit rotation 80 rpm (motor rotation speed 1600 rpm), but the calculated supply roll rotation speed is equal to or less than the lower limit rotation speed ( For example, when the rotation speed is equal to or higher than the upper limit rotation speed (for example, 85 rpm), the rotation of the feeding roll 20 is prevented from becoming unstable by performing the operation at the lower limit rotation speed or the upper limit rotation speed. At the same time, the indicator displays a warning to increase or decrease the vehicle speed.

  Therefore, in this embodiment, when the upper limit value of the controllable set rotational speed of the roll drive motor 25 that drives the feeding roll 20 is exceeded, the vehicle speed is automatically decelerated, and the controllable rotation of the roll drive motor 25 is achieved. As a configuration in which the vehicle speed is controlled so as to fall within a range of numbers, proper fertilizer and the like can be continuously sprayed.

  The travel spreader 2 of this embodiment can operate the trunnion arm 65 separately from the hydrostatic continuously variable transmission (HST) 64, the transmission lever 68 that operates the trunnion arm 65 of the HST 64, and the transmission lever 68. A trunnion motor 66 is provided.

  FIG. 12 is a side view of the vehicle body showing the shift interlocking mechanism R of the hydrostatic continuously variable transmission device 64, FIG. 13 is a rear view of the vehicle body, and a plan view showing the operation interlocking mechanism of the vehicle speed reduction arm 96 partially broken. Is shown in FIG. 14, and an exploded perspective view showing the shift interlocking mechanism R is shown in FIG.

  By operating the shift lever 68 shown in FIG. 13, the hydrostatic continuously variable transmission (HST) 64 provided between the left and right frames 6L and 6R is switched and shifted. The shift lever 68 is connected to the left end of a horizontal operation interlocking shaft 71 supported on the left and right machine frames of the post 8 of the steering handle 7 via a support pin 72, and the operation interlocking shaft 71 is moved by a forward and backward rotation operation. It is provided to rotate around the shaft core. In addition, by interposing the support pin 72, the shift lever 68 can be rotated by being displaced in the left-right direction, and the forward operation side and the reverse operation side of the non-illustrated lever guide can be displaced left and right. Further, the shift lever 68 is accompanied by a brake plate 74 and constitutes a brake mechanism with the stationary machine frame side so that the shift lever 68 can be arbitrarily held at the front and rear operation positions.

  The brake mechanism will be described in detail. An arc-shaped elongated hole 74a is formed in the braking plate 74 that is integrally linked to the speed change lever 68, and a braking spring shaft 75 protruding from the plate-shaped fixing machine frame side is penetrated through the elongated hole 74a. The brake spring shaft 75 has a fixed housing that receives the brake plate 74, and a housing that is movable to the opposite side across the brake plate 74 is provided in a pressed state by a spring 75 a. The brake plate 74 is held in the body urged by the spring 75a, and the brake plate 74 is held at the operation position of the shift lever 68 with respect to the stationary machine frame side. Therefore, the brake mechanism includes a brake plate 74 having a long hole 74a, a brake spring shaft 75 protruding from the fixed machine frame, a fixed housing, a moving housing, a spring 75a, and the like.

  The operation force of the transmission lever 68 is connected to a trunnion shaft 76 for operating a swash plate that controls the flow of hydraulic oil of a hydraulic pump (not shown) constituting the HST 64.

  As shown in FIG. 13, the other end of the operation interlocking shaft 71 mounted in the horizontal direction is connected to the upper end portion of the interlocking rod 78 extended downward via the mounting arm 79, and the lower end of the interlocking rod 78 is connected. The operation of the shift lever 68 is linked to the operation of the trunnion arm 65 by the members such as the pivot arm 85a, the intermediate interlock shaft 84, the pivot arm 85b, the plates 88a and 88b, the interlock rod 91, and the spring 93 (FIG. 15). It is configured as follows. These members including the operation interlocking shaft 71 are referred to as a speed change interlocking mechanism R.

  As shown in FIGS. 13 and 14, the trunnion arm 65 that operates via the gear shift interlocking mechanism R is connected to the trunnion shaft 76 as shown in FIGS. It is configured to be able to transmit to the trunnion shaft 76 of an HST hydraulic pump (not shown).

  That is, as shown in the exploded view of the gear shift interlocking mechanism R in FIG. 15, the gear shift interlocking mechanism R is provided with an intermediate interlocking shaft 84 mounted in the horizontal direction on the housing of the HST 64 in the vicinity of the trunnion shaft 76. The one end of the intermediate interlocking shaft 84 and the lower end of the interlocking rod 78 are connected by a rotating arm 85a. A rotation arm 85b is fixed to the other end of the intermediate interlocking shaft 84, and a pin 94 is provided on the arm 85b. A plate 88a is pivotally attached to the rotation arm 85b by the pin 94, and a long hole is formed in the plate 88a. 89a and 89b are formed and engaged with the long holes 89a and 89b via the locking pins 90 and 92 of the plate 88b, respectively, and act in a predetermined direction. On the other hand, an interlocking rod 91 is pivotally attached to the trunnion arm 65 that integrally interlocks the trunnion shaft 76, and a locking pin 92 provided on a plate 88b connected to one end of the interlocking rod 91 is provided on the plate 88a. The pin 90 is linked via a spring 93. Therefore, when the intermediate interlocking shaft 84 is rotated by a predetermined distance, the plate 88a engaged with the intermediate interlocking shaft 84 via the pin 94 attached to the rotating arm 85b is pushed and pulled, and the long holes 89a, In the range 89b, the trunnion arm 65 and the trunnion shaft 76 are rotated via the interlocking rod 91 by being pushed and pulled by the action of the spring 93.

  The interlocking rod 91 is composed of a female screw body 91a integrated with the plate 88a by welding, a second female screw body 91c pivotally attached to the trunnion arm 65, and a male screw body 91b screwed to these. The female screw bodies 91a and 91c are threaded in different directions from each other. The female screw bodies 91a and 91c are separated from each other by rotation in a fixed direction, and the distance between the female screw bodies 91a and 91c is approximated by rotation to the other. The neutral position setting of the trunnion arm 65 can be finely adjusted.

  When the shift lever 68 connected in this way is operated to one side with respect to the neutral zone, a forward (forward) rotation is output, and a high-speed output is sequentially generated by the lever operation, and is operated from the neutral zone to the other side. For example, a reverse rotation (reverse) rotation is output, and a conventionally known travel switching and acceleration / deceleration operation that is sequentially shifted to a high-speed output with a lever operation can be performed. In the case of the present embodiment, as shown in FIG. 12, the trunnion shaft 76 has a position N in which the trunnion arm 65 is perpendicular to the trunnion shaft 76 in the vertical direction, which is the neutral position. Thus, the left rotation F is forward rotation (forward movement side) and the right rotation R is reverse rotation (reverse movement side). As described above, the rotation speed increases as the trunnion arm 65 rotates away from the neutral position N.

  As shown in FIG. 13, the transmission lever 68 is provided on the left side of the steering handle 7 on the same side as the auxiliary transmission lever 95, and is configured to extend higher than the auxiliary transmission lever 95. The shift lever 68 is provided so that the grip 68a is located in the vicinity of the left of the handle 7 and the base mounting fulcrum is provided near the left side of the handle post 8 as described above.

  Therefore, the shift lever 68 is easy to perform a shift operation because the grip 68a that the driver grips and operates is on the left side of the handle 7 and is higher than the auxiliary shift lever 95 and at the same height as the handle 7. There is an advantage that it can be operated safely without being mistaken for the auxiliary transmission lever 95. Furthermore, the shift lever 68 has a base mounting position away from the driver's knee circumference to the front upper position, so there is a margin, and the shift lever 68 and the knee do not interfere with each other and work in an easy posture. There is a feature that can.

  Next, as shown in a partial side view of the airframe showing the transmission interlocking mechanism R of the HST 64 in FIG. 12, when the vehicle speed is decelerated by the transmission lever 68, the transmission lever 68 moves in the direction of arrow A, The brake plate 74 is held in position by a brake mechanism including a brake plate 74 that is a triangular plate on the base side, a spring urging means 75 a incorporated in the brake spring shaft 75, and the interlocking rod 78 integrally with the brake plate 74. The attachment arm 79 at the upper end is rotated in the direction of arrow B (see FIG. 13), and the lower end of the interlocking rod 78 moves in the direction of arrow C. When the lower end of the interlocking rod 78 moves in the direction of arrow C (the movement of the interlocking rod 78 shown in FIG. 15 is also indicated in the direction of arrow C), the plate 88a is pushed in the direction of arrow D as shown in FIG. The trunnion shaft 65 fixed to the trunnion arm 65 and the trunnion arm 65 via the rod 91 is configured to rotate to the deceleration side (arrow E direction).

  That is, the transmission interlocking mechanism R has an intermediate interlocking shaft 84 horizontally mounted on the housing of the HST 64 in the vicinity of the trunnion shaft 76, and one end of the intermediate interlocking shaft 84 and the lower end of the interlocking rod 78. Are connected by a rotating arm 85a. A rotating arm 85 b is fixed to the other end of the intermediate interlocking shaft 84, and a locking pin 94 is provided on the arm 85 b, and a plate 88 a is pivotally attached via the locking pin 94. Further, as shown in FIG. 15, the plate 88a is provided with elongated holes 89a and 89b, and the plates 88a and 88b are engaged via locking pins 90 and 92 provided on the plate 88b arranged in parallel with the plate 88a. The plate 88a and the plate 88b are slidable and moveable in a predetermined direction while bringing the surfaces into contact with each other.

  As shown in FIG. 15, the interlocking rod 91 includes a female screw body 91a integrated with one end of the plate 88b by welding, a second female screw body 91c pivotally attached to the trunnion arm 65, and these female screw bodies 91a and 91c. And the female screw bodies 91a and 91c are threaded in directions in which the directions of the screws are different from each other, so that each female screw body 91a is rotated by rotation in a predetermined direction. , 91c are separated from each other, and the distance between the female screw bodies 91a, 91c is approximated by rotation in the direction opposite to the predetermined direction, so that the neutral position setting of the trunnion arm 65 can be finely adjusted.

  On the other hand, one end of the female screw body 91c of the interlocking rod 91 is pivotally attached to the trunnion arm 65 that integrally interlocks the trunnion shaft 76. The plate 88b having one end fixed to the other end of the interlocking rod 91 is provided with a locking pin 92, and a spring 93 is provided between the locking pin 97 fixed to the end of the plate 88a and the locking pin 92. Is engaged, the plate 88a and the interlocking rod 91 are elastically linked. Further, the arm 85b and the plate 88a are detachably connected by a locking pin 94 between the hole of the arm 85b and the hole of the plate 88a.

Therefore, when the intermediate interlocking shaft 84 is rotated by a predetermined angle through the interlocking rod 78 by the operation of the speed change lever 68, the plate 88a pushes and pulls the plate 88b within the range of the size of the long holes 89a and 89b. A structure in which the interlock rod 91 fixed to the plate 88b is operated by extending and contracting the spring 93 to rotate the trunnion arm 65 rotatably connected to the interlock rod 91 and the trunnion shaft 76 connected to the trunnion arm 65. It is.
With the shift lever 68 configured as described above, if the forward rotation operation is performed forward after the operation to the left and right inward with respect to the neutral position N, the forward rotation (forward output) sequentially becomes high-speed output, and the neutral position N is used as a reference. When operated to the rear after operating to the left and right outside, a reverse rotation (reverse output) is output, so that the forward / reverse travel switching and the speed increasing / decreasing operation can be performed.

  On the other hand, as shown in FIG. 12, when the trunnion arm 65 is vertically below the trunnion shaft 76, the HST 64 is at the neutral position N, and the left rotation F with respect to the neutral position N is The forward rotation (forward movement side), the right rotation R is reverse rotation (reverse movement side), and the HST 64 rotates faster as the trunnion arm 65 rotates away from the neutral position N.

  A trunnion motor 66 (FIG. 15) that operates the trunnion shaft 76 to the deceleration side without operating the speed change lever 68 can be provided by the configuration of the interlocking mechanism R shown in FIG. By simply rotating the trunnion motor 66 by a predetermined amount, the trunnion arm 65 can move the trunnion shaft 76 to the deceleration side.

  As shown in FIG. 15, when the trunnion motor 66 is provided so as to be able to interlock forward and reverse, and when rotating in the direction of arrow F, the cam-like vehicle speed reduction arm 96 attached to the tip of the rotating shaft 66 a of the motor 66 and When the rod 96a integrated with the cam 96 is rotated so that the rod 96a hits the side surface of the trunnion arm 65 and the trunnion arm 65 is rotated in the direction of arrow E, the trunnion shaft 76 is maintained in the forward deceleration state.

  Further, when the gear shifting mechanism 68 in FIG. 15 operates the gear shifting trunnion shaft 76 in conjunction with the gear shifting lever 68 to decelerate the vehicle speed, in this deceleration operation, in the gearing lever 68 side interlocking configuration, And the lower end of the rotating arm 85a are connected by a pin 94. One end of the intermediate interlocking shaft 84 is fixed to the upper end of the rotating arm 85a, and the other end of the intermediate interlocking shaft 84 is connected to the rotating arm 85b. Since the rotating arm 85b is connected to the plate 88 having the long holes 89a and 89b via the pin 94 via the spring 93, the interlocking rod 91 for operating the trunnion arm 65 to the deceleration side is If the 88a and 88b do not move by a predetermined amount, the deceleration side operation of the trunnion arm 65 by the shift lever 68 is absorbed by the elongated holes 89a and 89b, and this deceleration side operation is performed. The order not interlocked well transferred to the intermediate interlocking shaft 84, the interlocking mechanism of the shift lever 68 side can maintain the desired vehicle speed setting.

  Therefore, when the deceleration side control by the trunnion motor 66 is stopped, the trunnion arm 65 is moved to the initially set shift position (the shift lever 68 position held by the brake mechanism and the plate 88a position corresponding to the shift lever 68 position). The plate 88b is pulled in), and the traveling speed returns to the speed set by the speed change lever 68.

  The operation by the trunnion motor 66 can be decelerated within the range on the forward side of the trunnion arm 65, and does not reach the neutral position or the range on the reverse side. That is, the trunnion arm 65 is rotated in conjunction with the trunnion motor 66, but the operation amount is set to a length that does not reach the neutral position or the reverse range even when the trunnion arm 65 is displaced most. Therefore, it is possible to ensure safe traveling without causing the vehicle to stop suddenly or operate on the reverse side.

  During the fertilizer spraying operation by the traveling spreader 2, when the operating speed is too fast and exceeds the specified value without changing the position of the HST main transmission lever 68, the trunnion arm 65 of the HST 64 is automatically decelerated by the trunnion motor 66. The software configuration shown in the flowchart shown in FIG.

  Conventionally, the working speed of the work machine 2 is too fast during the fertilizer spraying work, and the specified value (the maximum number of rotations that can be controlled by the roll drive motor 25, which is proportional to the maximum number of rotations that can be controlled by the feeding roll 20). In this case, a warning sound or warning indicator was used to notify the operator of the abnormality, but during work, the engine sound or the rotation sound of the blower may not be heard or recognized, and the timing to notice the abnormality is delayed. , Fertilizer application unevenness may occur.

  Therefore, in this embodiment, if the feeding roll rotation speed R calculated based on the following equation (1) is a specified value, for example, 80 rpm, the trunnion motor 66 is driven to the deceleration side so as not to exceed 80 rpm. Control to automatically reduce the working speed S.

  Further, if the feeding roll rotational speed R is equal to or less than the specified value, the feeding roll rotational speed R is increased to a lower limit rotational speed, for example, 10 rpm. At this time, the traveling speed of the work implement is not operated. This is because even if the trunnion motor 66 is operated, the speed change lever 68 does not move as shown in FIG.

R = AWS × 30 / CD (1)
(A: fertilizer application amount, W: spread width (m), S: work speed, C: roll volume, D: specific gravity of fertilizer)
In this embodiment, the HST 64 and the trunnion motor 66 are used. However, the present invention is not limited to the HST 64 and the trunnion motor 66, and includes hydraulic clutches corresponding to each of the first to fourth gears. A configuration in which the control shown in FIG. 16 is performed using a transmission that switches on and off by switching on and off the hydraulic clutch may be used.

In the flowchart of FIG. 16, specific supplementary deceleration processing when “trunion motor deceleration side output” occurs will be supplementarily described below.
Based on the set fertilizer application amount, the appropriate vehicle speed is calculated and stored in the control unit. When the “trunion motor deceleration side output” request is made, the appropriate vehicle speed is called and the deceleration range of the trunnion motor 66 is determined.

  Also, calculate the difference between the roll rotation speed calculation value at the time when the “trunion motor deceleration side output” request is made and the roll rotation upper limit value calculated in advance, and calculate the deceleration side rotation amount of the trunnion shaft from this difference. As a result, the trunnion motor may be subjected to deceleration control output.

  The trunnion deceleration amount per one deceleration output to the trunnion motor 66 is set as a predetermined unit. When the roll rotation upper limit value is exceeded, the roll rotation upper limit value is compared with the roll rotation upper limit value per one deceleration output. The above-described deceleration control and detection for each unit are repeated until the value decreases.

  If the vehicle speed calculation after a definite period of time has elapsed after the deceleration output to the trunnion motor 66 and the roll rotation number are calculated and compared with the roll rotation upper limit value, the vehicle speed is reduced by the elapse of the definite period of time. It is stable and the rotation speed of the roll after changing the vehicle speed can be reliably calculated.

  Further, as shown in the flowchart of FIG. 17, in a self-propelled fertilizer spreader having a continuously variable transmission such as HST64, even if the work is started at a specified work speed, the work is once decelerated to a predetermined vehicle speed immediately after the work is started. It was configured as follows.

  This is because the prior art has the following problems. That is, when the work is started at a work speed within a range in which the rotation speed of the feeding roll 20 can be controlled, for example, when starting at a speed of 0.7 m / second, the spray reaches the second jet tube 14 immediately after the start of fertilizer spraying. Since it takes about 2 seconds at the shortest, the boom-type fertilizer spreader 1 having a length of 15 m generates a non-spraying area with an area of 1.4 m × 15 m.

  Therefore, as shown in the flowchart of FIG. 17, even if the work is started at the specified work speed, immediately after the start of the work, if the vehicle is once decelerated to the predetermined vehicle speed, the non-spreading area is set immediately after the start of the work to start slowly at the specified speed. There is an advantage that can be made smaller than before.

  Also in this case, using the configuration shown in FIG. 15, the trunnion motor 66 rotates only the trunnion arm 65 to the deceleration side while keeping the HST main transmission lever 68 as it is.

  As described above, when the shift lever 68 is operated, it is held at the operating position by the brake mechanism. In addition, the trunnion arm 65 can be independently controlled by the trunnion motor 66 regardless of the operation position of the transmission lever 68, and can be restored to the original speed state when the motor control is released.

  For this reason, the vehicle speed can be controlled so as to automatically switch to the work speed set by the driver after the work at a low speed immediately after the start of the fertilizer application work (after a predetermined time has elapsed). The operating speed set by the driver is that the trunnion arm 65 is automatically switched to the operation position of the main transmission lever 68. That is, when the transmission lever 68 is operated as described above, it is held at the operation position by the brake mechanism. Regardless of the operation position of the speed change lever 68, the trunnion arm 65 can be independently decelerated with the trunnion motor 66, and can be restored to its original speed state when the motor control is released.

Thus, there is an advantage that the occurrence of the non-spreading area can be reduced by the vehicle speed control that automatically sets the speed quickly, and that the vehicle speed need not be changed each time. Thus, there is no need to change the position of the HST main transmission lever 68 after the work starts.

Next, the structure of the granular material (fertilizer) feeding device 11 of the second embodiment mounted on the traveling granular material spreader will be described.
Since the structure of the conventional feeding roll is a double tank structure in which a small tank is provided inside a large tank, a feeding roll dedicated to the small tank is provided, and a plurality of feeding rolls that rotate independently are arranged. In addition, since it is necessary to provide a partition wall for separating the fertilizer from the main tank and the fertilizer from the sub tank in the roll case, the configuration of one roll case has a configuration that does not allow the entire feeding roll to be pulled out in one direction. For this reason, there is a demerit that the maintainability of the feeding roll is extremely inferior.

  Then, the principal part of the granular material feeding apparatus of the Example of this invention is shown in FIG. 18A is a side view of a feeding device having a part of a longitudinal section, FIG. 18B is a view seen from the direction of arrow A in FIG. 18A, and FIG. 18C is a first roll case 81. The top view of is shown.

The bottom opening of a mortar-shaped granular material (which will be described below as a specific example of a fertilizer ) is divided into a main tank 80a and a sub-tank 80b. Arrange it according to the fertilizer filling port on the ceiling. A second roll case 82 having the same outer shape as the volume of the first roll case 81 is mounted in the first roll case 81. Since the fertilizer filling port having the same shape as the fertilizer filling port of the first roll case 81 is also provided in the ceiling portion of the second roll case 82, the fertilizer filling ports of the two roll cases 81 and 82 are matched. Deploy. Also, openings of the same shape are provided at the bottoms of the first roll case 81 and the second roll case 82, and these openings are also matched and connected in accordance with the opening provided on the upper surface of the through-cylinder 30.

  A partition plate 80c that divides the inside of the fertilizer tank 80 vertically into a main tank 80a and a sub tank 80b is provided, and fertilizer filling ports 81a and 81b that match the two bottom openings of the main tank 80a and the sub tank 80b are provided in the first roll. The case 81 is provided. Similarly, the second roll case 82 is provided with fertilizer filling ports 82a and 82b (FIG. 19B).

In the second roll case 82, a feeding roll 20 having a rotating shaft 83 oriented in the horizontal direction is provided, and a driving motor for rotating the feeding roll is provided at the end of the feeding roll rotating shaft 83 in the second roll case 82. 25 is attached to the motor mounting flange 82e with a bolt 87a, fertilizer is filled into the feed roll 20 that rotates at a predetermined rotational speed from the bottom filling port of the fertilizer tank 80, and is discharged into the through-cylinder 30 immediately below the feed roll. fertilizer supplied into the 30 Ru is sprayed in the field from the jetting nozzle 50 (FIG. 1) of the second噴管14 is transported by air blown in the direction of the first噴管13.
A plurality of feeding rolls 20 are arranged in parallel on the rotating shaft 83 in order to use the feeding rolls 20 set in advance according to the set feeding amount for the feeding action.

  In the case of the present embodiment, the flange 82e provided on the side of the first roll case 81 on the side of the drive motor 25 is provided with 4 bolts 87b for fixing the drive motor mounting bolt 87a, the fertilizer tank 80, and the through cylinder 30, respectively. A book is provided. Since the 2nd roll case 82 on the opposite side to a bolt attachment part is set as the structure fitted in the 1st roll case 81, attachment members, such as a bolt, become unnecessary.

  According to the granular material (fertilizer) feeding device 11 having the above-described configuration, the drive motor 25 for rotating the feeding roll 20 is removed, then the plurality of feeding rolls 20 are removed from the second roll case 82 together with the rotary shaft 83, and then Since one roll case 81, the fertilizer tank 80, and the through cylinder 30 can be easily removed, the maintenance performance such as the work of detaching the spraying agent (fertilizer) adhering to the feeding roll 20 after the fertilizer spraying operation is completed is extremely excellent.

  In addition, the maintenance work can be performed safely by removing the four bolts 87b from the fertilizer spraying device 1 of the traveling spreader 2 while removing the four bolts 87b while maintaining the integrated structure of the granular material (fertilizer) feeding device 11. I can do it easily.

  Since the feeding device 11 is integrally slid to the rear side of the machine body so that the feeding device 11 can be removed from the main body, the feeding device having a length of about 30 cm including the drive motor 25 is also heavy. The workability is improved by pulling it out to the rear side of the machine.

  According to the above configuration, the first roll case 81 and the second roll case 82 can be easily slide-divided, and the first roll case 81 provided in contact with the outer periphery of the second roll case 82 can be used as a fertilizer tank during the slide division. Since the second roll case 82 can be pulled out while remaining between the cylinder 80 and the cylinder 30, the attachment / detachment time of the second roll case 82 can be greatly shortened.

  Since the outer shape of the second roll case 82 included in the first roll case 81 is circular, the inner processing of the first roll case 81 can be easily and inexpensively manufactured, and the first roll case 81 can be made small and compact. There is an advantage that enables a space-saving structure that can be designed.

  Conventionally, when the feeding roll 20 completely fixed to the rotating shaft 83 of the second roll case 82 and the feeding roll 20 provided with the one-way clutch 89 on the rotating shaft 83 are provided adjacent to each other, the feeding roll 20 having the one-way clutch 89 is provided. When the rotating shaft 83 rotates in the direction in which the rotating shaft is stationary, the two feeding rolls 20 are normally in contact with each other, so that the feeding roll 20 having the one-way clutch 89 for the rotation of the feeding roll 20 completely fixed to the rotating shaft 83. Rotating around, there may be a disadvantage that the fertilizer application amount is larger than the set amount.

  Accordingly, FIG. 19 (FIG. 19A is a side view of the feeding device, part of which is a longitudinal section, FIG. 19B is a top view of the second roll case 82, and FIG. 19C is a perspective view of the partition plate. In the roll arrangement structure of the second roll case 82 that is configured to be easily detachable from the first roll case 81 integrally with the drive motor 25, as shown in FIG. In addition, a part of the feeding rolls 20 is provided on the rotating shaft 83 via a one-way clutch 89, and the other feeding rolls 20 are fixed on the rotating shaft 83. Since the drive motor 25 is capable of forward and reverse rotation, when a large amount of fertilizer is sprayed, the rotation shaft 83 is rotated in the rotating direction of the feeding rolls 20 provided through the one-way clutch 89 so that a small amount of the feeding rolls 20 are rotated. When the fertilizer is sprayed, the rotating shaft 83 is rotated in the direction in which only the feeding roll 20 fixed on the rotating shaft 83 rotates. In order to prevent the feeding roll 20 having the one-way clutch 89 from rotating when the feeding roll 20 completely fixed to the rotating shaft 83 rotates, the feeding roll 20 provided via the one-way clutch 89 and the rotating shaft 83 are disposed. A partition plate 98 that partitions the feeding space of the fixed feeding roll 20 is attached to the inside of the second roll case 82. As shown in FIG. 19B, a main opening 82a and a sub-opening 82b are provided above the second roll case 82.

Further, the partition plate 98 is provided with a groove 82c in the inner peripheral portion of the second roll case 82, and the protruding portion 98a of the partition plate 98 is inserted into the groove 82c. The roll case 82 is provided inside the both side surfaces so as to be freely rotatable. The material of the partition plate 98 is preferably elastic hard rubber. Since the partition plate 98 rotates integrally with the feeding roll 20, the partition plate 98 is worn, but both side surfaces of the second roll case 82 are not worn. Since the relatively cheap partition plate 98 is cheaper than the second roll case 82, only the partition plate 98 can be easily replaced.
In this way, it is possible to select whether to rotate all of the plurality of rolls 20 according to the fertilizer application amount or to rotate some of the feeding rolls 20 while preventing the adjacent rolls 20 and 20 from being rotated together.

  Further, as shown in FIG. 19A, an opening 81 d on the side surface of the first roll case 81 is provided, and a convex portion (projection) 82 d that also serves as a bearing is provided on the second roll case 82. And the second roll case 82 fixed the phase. Note that ventilation openings are provided on the side surfaces of the first roll case 81 and the second roll case 82 on the side of the cylinder 30. FIG. 19A shows openings 81 e and 81 f provided in the first roll case 81.

  FIG. 20 shows a side view of the feeding device in which a part of the BB line of FIG. 19A (when the feeding roll 20 is incorporated) is a longitudinal section, a pair of opposed first roll cases 81. When a groove portion extending in the horizontal direction is provided on the inner surface, and a protrusion 82e is provided at a location corresponding to the groove of the second roll case 82 to join the both, the roll cases 81 and 82 can be fixedly supported as a unit. The openings of the roll cases 81 and 82 on the tank 80 side and the through-cylinder 30 side can be made to coincide with each other, the opening area is unchanged, the filling amount of the spraying agent (fertilizer) into the feeding roll 20 is stable, and according to the spray setting There is a merit that can be sprayed.

  Further, the upper surface of the first roll case 81 and the second roll case 82 has an opening having the same area as the opening at the bottom of the fertilizer tank 80, but inside the boundary surface between the first roll case 81 and the second roll case 82. The fertilizer powder may invade, and the components of the second roll case 82 that are slid and attached may become hard and cannot be attached or detached. Therefore, an O-ring 99 may be provided on the boundary surface between the first roll case 81 and the second roll case 82.

  Conventionally, when fertilizer particles enter the inside of the boundary surface between the first roll case 81 and the second roll case 82, it becomes a resistance when sliding and removing, and the maintainability may be remarkably deteriorated.

As shown in the side view of FIG. 21, the second roll case 82 is extracted from the first roll case 81 for maintenance of the second roll case 82 as a three-part structure in the area of the roll 20, the flange 82 e and the drive motor 25. The (drawn) second roll case 82 has a structure that can be easily divided into three.
As described above, the purpose is to easily take out the feeding roll 20 from the inside of the second roll case 82 in a short time. When the feeding roll 20 is used for a long time, the roll 20 is also cracked or worn. . The exchange time at that time is shortened.

A first roll case 81 (second roll case) as shown in a side view of the feeding device in which a part of FIG. 22 (sectional view taken along line BB in FIG. 19 (when the feeding roll 20 is incorporated)) is a longitudinal section is shown. and inside the impeller and those Sessu that portion of the feed roll 20 of the opening of the lower illustrated as an integral), a second roll case 82 feeding fertilizer by the impeller of the delivery roll 20 which rotates in the direction of arrow D is completed A resistance plate 98 protruding from the inner diameter of the roll is disposed on the side where no fertilizer is present. The position of the resistance plate 98 is the most suitable position for preventing a small amount of fertilizer from being taken back to the fertilizer tank 80 side, and the fertilizer adhering to the impeller can be automatically removed. It becomes possible to always discharge toward the specified amount of the field.

  The present invention is not limited to the traveling spreader 2 that sprays fertilizer and the like provided with the granular material spraying device 1, and may be used for a work vehicle that sprays other fertilizer and the like.

DESCRIPTION OF SYMBOLS 1 Granules spreading apparatus 2 Traveling spreader 3 Engine 4 Front wheel 5 Rear wheel 6L, 6R Frame 7 Handle 8 Handle post 10 Fertilizer tank 10a Partition wall 11 Feeder 12 Blower 12a Blower 12b Electromagnetic clutch 13 First jet pipe 14 2 jet tube (boom)
DESCRIPTION OF SYMBOLS 15 Fertilizer application control part 16 Vehicle speed calculation means 17 Fertilizer application amount calculation means 18 Mast part 19 This machine controller 20 Roll 21 Roll drive shaft 22 One-way clutch 25 Roll drive motor 30 Cylinder 31 Blow cylinder 32 PTO shaft 33 Passenger seat 34 Support bracket 35 Bracket 36 Elevating step 37 Vehicle speed sensor 40 Bellows tube 42 Cylindrical body 43 Arm body 44 Vertical support shaft 45 Telescopic cylinder 46 Electric motor 47 Lateral support shaft 48 Electric telescopic cylinder 49 Inclination sensor 50 Spray nozzle 51 Spray switch 52 Fan switch 53 Boom spreading lever 54 Remaining tank sensor 56 Liquid crystal display 57 Variable switch 58 Fertilizer setting switch 59U, 59D Increase / decrease switch 60 Cumulative reset switch 61 Display switch 62 Key switch 63 Buzzer 64 HST
65 trunnion arm 66 trunnion motor 67 GPS receiver 68 shift lever 71 operation interlocking shaft 72 support pin 74 brake plate 74a long hole 75 brake spring shaft 75a spring 76 trunnion shaft 78 interlocking rod 79 mounting arm 80 fertilizer tank 80a main tank 80b sub tank 80c Partition plate 81 First roll case 81a, 81b Fertilizer filling port 81d Opening portion 81e, 81f Opening portion 82 Second roll case 82a Main opening portion 82b Sub-opening portion 82c Groove 82d Protruding portion (protruding portion) 82e Motor mounting flange 82f Protruding portion 83 Rotating shaft 84 Intermediate interlocking shaft 85a, 85b Rotating arm 25 Drive motor 87a, 87b Bolt 88a, 88b Plate 89 One-way clutch 89a, 89b Long hole 90,92 Locking pin 91 Interlocking rod 91a Female screw body 1c second female screw member 91b male screw member 92,94,97 pin 93 spring 94 pin 95 auxiliary shift lever 96 cam 96a rod 98 resistive plate 98a projecting portion 98 partition plate 99 O-ring R shift interlock mechanism

Claims (1)

A plurality of feeding rolls (20) for feeding out the granular material accommodated in the granular material tank (80) by rotation, a driving motor (25) for driving the feeding roll (20), and a feeding roll (20). A granular material spraying device ( 12) having a granular material tube ( 14) extending in the left-right direction of the machine body for spraying the granular material through the cylinder (30) and an air blower (12) for blowing air to the through cylinder (30). 1) and a traveling spreader provided with a vehicle speed sensor (37) for detecting the traveling speed of the aircraft,
When the rotational speed of the feeding roll (20) is linked to the vehicle speed measured by the vehicle speed sensor (37) and the rotational speed of the drive motor (25) of the feeding roll (20) exceeds the set upper limit value, it is automatically A control device (15, 19) for reducing the vehicle speed and controlling the drive motor (25) so as to fall within a controllable rotational speed range ;
The plurality of feeding rolls (20) are provided in series with the rotating shaft (83) so as to be able to rotate forward and backward.
A part of the feeding roll (20) is provided on the rotating shaft (83) via a one-way clutch (89),
When the rotating shaft (83) rotates in one direction, all of the plurality of feeding rolls (20) are rotated, and when the rotating shaft (83) rotates in the other direction, a part of the feeding rolls (20) rotates.
The granular material tank (80) contains herbicide and fertilizer separately,
Providing a first roll case (81) that forms a fertilizer filling port that matches the bottom opening of the particulate tank (80);
In the second roll case (82) fitted in the first roll case (81), a rotating shaft (83) and the plurality of feeding rolls (20) are provided,
A drive motor (25) is provided at one end of the rotating shaft (83),
When the drive motor (25) was removed, the drive motor (25) was attached to the first roll case (81) with the second roll case (82), the rotating shaft (83), and the plurality of feeding rolls (20). Slide to the side to make it removable,
When the second roll case (82) is removed, the first roll case (81) remains between the particulate tank (80) and the cylinder (30),
A traveling spreader characterized in that the herbicide is fed out to the front side of the blower conveyance in the cylinder (30) and the fertilizer is fed out to the rear side of the blower conveyance .

Images