JP5570770B2 - Feeding and transferring device for powder and granular materials - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a powder and granular material feeding device used in a spreader or the like for spraying particles and powder such as granular fertilizer accommodated in a tank to a field by a jet tube.

  Some tank chambers are provided with a plurality of tank chambers, and each tank chamber is provided with a plurality of drop openings so that the sprayed material can be put into the plurality of drop openings (for example, Patent Documents). 1). Therefore, there is a technique in which a plurality of types of sprayed materials such as agricultural chemicals and fertilizers are simultaneously put in each tank room and sprayed simultaneously.

Japanese Patent No. 3043577

  By the way, in the above-mentioned patent document, as a feeding mechanism, three types of feeding rolls having different feeding amounts are arranged on the feeding roll shaft via the clutch means, and the granular material in the tank is fed out.

  And a ring-shaped partition plate is arrange | positioned in the loosely-fitted state between several delivery rolls, and the movement of a granular material is controlled. However, when the partition plate is loosely fitted, when one of the adjacent feeding rolls is driven and the other is not driven, a rotational force may be transmitted from the driving side to the non-driving side to rotate unexpectedly. Moreover, according to said patent document 1, although the structure which has a side cover in the both ends of the case which accommodates a feeding roll, and is attached or detached is disclosed, it is not the structure which considered the maintainability of internal structures, such as a feeding roll. There is room for improvement. The present invention is intended to facilitate maintenance of an internal feeding roll and the like while making the configuration of the roll case rational.

The invention according to claim 1 is provided with a feeding device 8 so that the granular material can flow into the lower opening of the tank 7, and the feeding device 8 includes a feeding roll shaft 15 and a plurality of feeding rolls 14a to 14d, In these powder rolls provided with a through-cylinder 62 for transferring the powder fed from the feed device 8 below the feed rolls 14a to 14d by a blast, an inflow portion 19 communicating with the tank 7 is provided below. A roll case 17 having a discharge portion 20 communicating with the through-cylinder 62 is provided. The roll case 17 is formed with a partition portion 18 for partitioning the inner space in the longitudinal direction, and the feeding roll shaft 15 is connected to the roll case 17. The feeding roll shaft 15 is provided with a length extending from the rear end portion to the front end portion thereof, and a part of the plurality of feeding rolls 14c is detachably provided on the front end side of the feeding roll shaft 15, The other end of the roll shaft 14 is provided with a group of other feed rolls 14 a, 14 b, 14 d, and the feed roll shaft 15 with the part of the feed rolls 14 c removed is disposed in the longitudinal direction with respect to the roll case 17. together is inserted into the front side from the rear side opening beyond the partition portion 18, the configured that assembling a part of the feed roll 14c from the front side opening feeding the front end of the roll shaft 15 of the roll case 17,
The other feeding rolls 14a, 14b, 14d are assembled to the feeding roll shaft 15 via one-way clutches 16x, 16x, 16y,
The other feeding rolls 14a, 14b and 14d are composed of feeding rolls 14a and 14b having a large feeding capacity and feeding rolls 14d having a small feeding capacity, and the one-way clutches 16x, 16x and 16y are used for forward rotation of the feeding roll shaft 15. The one-way clutches 16x, 16x interlocking with the feeding roll and the one-way clutch 16y interlocking with the feeding roll in conjunction with the reverse rotation of the feeding roll shaft 15 are connected to the feeding rolls 14a, 14b having a large feeding capacity. 16x and 16x are configured to interlock with the rotation of the feeding roll shaft 15, and the one-way clutch 16y is configured to interlock with the rotation of the feeding roll shaft 15 by the one-way clutch 16y. It is set as the feeding apparatus of the characteristic granular material.

According to the second aspect of the present invention, the feeding roll 14d having a smaller feeding capacity among the other feeding rolls 14a, 14b, and 14d is inflow in phase with the inflow portion 19d and the discharge portion 20d of the roll case 17. A block body 27a having a portion 27D and a discharge portion 27d, and a partition wall body 27b that also serves as a definition of the feeding roll 14a, and is mounted in a case block 27 that can be attached to the feeding roll shaft 15; The outer periphery of the powder case is set as a feeding device for the granular material according to claim 1, which is provided to have substantially the same diameter as the inner periphery of the roll case 17 .

According to a third aspect of the present invention , a fixing plate 32 is provided on the rear surface of the case block 27 in the rear opening portion of the roll case 17, and the cup is moved to the fixing plate 32 by moving in the axial direction with respect to the end of the feeding roll shaft 15. It is set as the feeding apparatus of the granular material of Claim 2 which provided the roll drive motor 33 provided with the motor shaft 33a contacted / separated via the ring 37. As shown in FIG.

  According to the first aspect of the present invention, the feeding roll shaft 15 in which a plurality of feeding rolls are arranged in the longitudinal direction of the feeding roll shaft 15 and a part of the feeding rolls 14 c is removed is long with respect to the roll case 17. It passes through the partitioning portion 18 from the rear side opening portion in the direction to the front side, and the part of the feeding rolls 14 c is assembled from the front side opening portion of the roll case 17 to the front end side of the feeding roll shaft 15. Therefore, the partition portion 18 can be formed integrally with the roll case 17, and the feeding roll 14 c disposed on the front side and the feeding roll 14 b disposed on the rear side may be rotated with the partition portion 18 interposed therebetween. And no premature deterioration due to wear. Further, among the plurality of feeding rolls, the feeding roll shaft 15 is inserted from the rear side of the roll case 17 with the other feeding rolls 14a, 14b, and 14d assembled, and the one feeding roll 14c is fed from the front side. Since it is assembled to the shaft 15, maintenance work can be facilitated by configuring the layout so that a relatively wide working space can be secured on the rear side.

Further, the other feeding rolls 14a, 14b, and 14d are assembled to the feeding roll shaft 15 through the one-way clutches 16x, 16x, and 16y, but the one-way clutch is assembled in advance at a location away from the feeding roll mounting position. Assembled and inserted into the roll case 17 from the rear open part, and the assembly work and the maintenance work are facilitated by taking advantage of the sub-assembly.

Further, Repetitive out capacity of large feed roll 14a, 14b is one-way clutch 16x, rotating interlocked been accompanied in the normal rotation of the feed roll shaft 15 by 16x, the smaller feed roll 14d is the one-way clutch 16y of feeding capacity feed roll shaft 15 Because the large feed rolls 14a and 14b and the small feed roll 14d are provided for spraying different granular materials by rotating in conjunction with the reverse rotation of the roller, it is not necessary for both to be rotationally driven. Since unnecessary rotation is not performed, it is rational and extends the life of the feeding roll.

According to the second aspect of the present invention, the case block 27 covers the feeding roll 14 d having a small feeding capacity with the case block 27, and the outer periphery of the case block 27 is substantially the same diameter as the inner periphery of the roll case 17. Thus, even when the feeding roll 14 has a small feeding capacity, it can be inserted into the roll case 17 together with the case block 27, and when the effective width is set short as the feeding rolls 14a and 14b having a large feeding capacity. Compared to the above, the remaining grains in the feeding roll 14d are reduced, and the assembly of the case block 27 to the feeding roll shaft 15 is also performed by sub-assembly, so that replacement and maintenance work can be easily performed.

According to the third aspect of the present invention, the roll drive motor 33 can be mounted on the rear surface side of the case block 27 via the coupling 37 while the motor shaft 33a and the feeding roll shaft 15 are easily released from each other. 33 and the feeding roll shaft 15 can be integrally inserted into and removed from the roll case 17, so that maintainability can be improved.

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 with a partial cross section of the feeding device of the granular fertilizer Top view of tank section of granular fertilizer Side view (A) and front sectional view (B) of feeding device of granular fertilizer Side sectional view of feeding device Side sectional view (A) and exploded side view (B) of feeding device Exploded view around feed roll shaft (A), feed roll exploded cross-sectional view (B) with large feed capacity, and cross-sectional view (C) with feed roll and roll block with small feed capacity Top view of the operation unit Overview diagram showing an example of controller connection Control block diagram flowchart flowchart Time chart Time chart flowchart Perspective view of collision plate Side cross-sectional view of tip guide tube (A) and perspective view of medium adjustment plate (B) A perspective view of an inclined guide plate (A) and a perspective view showing a modification of the inclined guide plate (B) The perspective view which shows the modification of a front-end | tip guide cylinder part

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 7 and 7 are mounted on the rear part of the two riding management machines mounted with the engine 3 at the front and appropriately shifting the engine speed to transmit the front and rear wheels 4 and 5. The granular spraying device 1 includes the tank 7, a feeding device 8, a blower 9, a first injection tube 10, a second injection tube 11, a control unit 12, and the like.

  Each of the pair of tanks 7 and 7 is provided with a feeding device 8 for feeding a predetermined amount of sprayed granule from the tank 7. The feeding device 8 comprises a plurality of types of feeding rolls 14 on the feeding roll shaft 15, and a first feeding roll 14a formed in the circumferential direction with a feeding recess as the same capacity, and a first feeding roll 14a having the same configuration as the first feeding roll 14a. The two feeding rolls 14b, the third feeding roll 14c, and the fourth feeding roll 14d formed shorter than these feeding rolls and with a shallow recess depth are set as one set, and the first and second feeding rolls 14a and 14b are one-way. The fourth roll 14 is attached to the feeding roll shaft 15 via the one-way clutch 16y, and is attached to the feeding roll shaft 15 via the clutches 16x, 16x. Further, the third feeding roll 14 c is configured to be integrally attached to the feeding roll shaft 15.

  Accordingly, when the feed roll shaft 15 is driven forward, the first and second feed rolls 14a to 14c are driven because the first and second feed rolls 14a and 14b are driven by the interlocking action of the one-way clutches 16x and 16x. It is a configuration to be driven. Conversely, when the feed roll shaft 15 is driven in reverse, the one-way clutch 16y is interlocked, so the first and second feed rolls 14a and 14b are stopped, and the third feed roll 14c and the fourth feed roll 14d are driven. .

  On the other hand, the inside of the tank 7 is provided with a partition wall 7a that is U-shaped in plan view, and is divided into a section A corresponding to the first to third feeding rolls 14a to 14c of the feeding device 8 and a section B corresponding to the fourth feeding roll 14d. It becomes the composition which is done. 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 feeding roll shaft 15 rotates in the forward direction, the first feeding roll 14a to the third feeding roll 14c rotate in conjunction with each other so that the granule in the section A is set in the feeding state. Only 14c is extended. When the herbicide is introduced into the section B, a small amount is sprayed by this reverse interlocking.

  In the following description, the feeding state of the first to third feeding rolls 14a, 14b, 14c is the large supply state, the feeding state of the third feeding roll 14c is the medium supply state, and the feeding state of the fourth feeding roll 14d is the small supply. It is called a state. Further, the feed roll types 1, 2 and 3 are set by the feed roll or the feed roll set used in the three forms of large, medium and small.

  Further, the configuration of the feeding device 8 and the feeding rolls 14a to 14d will be described in detail. As shown in FIGS. 6 to 8, four feeding rolls 14 a to 14 d are mounted in the roll case 17 with the feeding roll shaft 15, but the first and second feeding lengths are long. A third feeding roll 14c having a slightly shortened roll length is arranged on the right side (front side in the front-rear direction) with the rolls 14a and 14b in the center, and the blade diameter is the shortest on the left side (rear side in the front-rear direction). This is a configuration in which a fourth feeding roll 14d formed with a short length is disposed.

  The roll case 17 is made of a resinous material, and the inflow portions 19a and 19c of the granular material (application agent) face the section A, and the inflow portion 19d looks into the section B, and the inflow portions 19a and 19c Correspondingly, the discharge portions 20a and 20c are formed, and the discharge portion 20d is formed corresponding to the inflow portion 19d. In the illustrated example, the discharge portion 20a and the discharge portion 20d are formed in common. In addition, the partition part 18 is the structure which partitions off between the said delivery roll 14b and the delivery roll 14c, ie, the structure which partitions off and forms the inflow part 19a and the inflow part 19c.

  As shown in FIG. A, one-way clutches 16x and 16x are provided in the boss portions of the feeding rolls 14a and 14b and are attached to the feeding roll shaft 15. The partition plate 21 is interposed between the feeding rolls 14a and 14b. Shaft is attached in close contact with the front and back. Due to the presence of the partition plate 21, the feeding roll 14a and the feeding roll 14b are defined so as to restrict the flow of the granular material and guide only downward. 22A, 22B, and 22C are fitting members also serving as seal rings that are interposed between the boss portion and the feeding roll shaft 15 and restrict the movement of the feeding rolls 14a and 14b in the axial direction. Thin sliding contact plates 23a and 23b are provided on the boss portion before and after the integrated feeding rolls 14a and 14b. The sliding plates 23a and 23b are defined so as to regulate the movement of the powder and granular materials flowing into the feeding roll 14a and the feeding roll 14b together with the partition plate 21 to the adjacent portions. The front and rear ends of the boss part are provided with a seal ring 22A, 22B. Of these, a collar part 22Aa is formed on the outer periphery of the seal ring 22A side, The slidable contact plate 23a is slidable with the feeding roll shaft 15 to the rear side (left side in the figure).

  The feeding roll 14c is provided integrally with the feeding roll shaft 15 by fitting a boss portion to a rectangular tube shaft 25 which is sunk on the front side of the feeding roll shaft 15 and is detachably fixed by a plug 24. It is the structure interlocked with the forward / reverse rotation. A seal holding ring 26a fitted with a seal 26 is fitted inside the roll case 17 with the space ring member 40 sandwiched between the front side portion (right side portion in the figure) of the feeding roll 14c, and the open end of the roll case 17 is The lid 26b is detachably attached.

  Further, a feeding roll 14d is disposed on the rear side portion (left side portion in FIGS. 6 to 8) of the roll case 17, and the feeding roll 14d is held in a case block 27 fitted in the roll case 17. Is provided. That is, the case block 27 also serves as a block main body 27a formed with the inflow portion 27D and the discharge portion 27d that are in phase with the inflow portion 19d and the discharge portion 20d of the roll case 17, and the feed roll 14a. The case block 27 is provided so as to be detachable with respect to the roll case 17, and the feed roll 14d is passed through the one-way clutch 16y to the feed roll shaft 15 that can penetrate the case block 17. Partition plates 28a and 28b and seal holding rings 29a and 29b are provided on the block main body 27a side and the partition wall body 27b side, respectively. These are sub-assembled and are long in a state where the feeding roll shaft 15 can be inserted and removed. Unitized with bolt members 30, 30. The one-way clutch 16y is different from the one-way clutches 16x, 16x of the feeding rolls 14a, 14b in the direction of rotation that can be interlocked by the feeding roll shaft 15, and the one-way clutches 16x, 16x are in a drive-linked state in the forward rotation state. In some cases, the direction of rotation of the one-way clutch 16y that can be driven and linked is set to the reverse state.

  The unitized case block 27 has an outer diameter substantially the same as that of the feeding rolls 14a and 14b and the feeding roll 14c, and an inner peripheral surface of the roll case 17 is formed.

The fixing plate 32 is fastened by bolting with the packing ring 31 sandwiched between the rear surface side of the block body 27a of the case block 27.
On the rear surface side (left side in the figure) of the fixing plate 32, the base plate 34 for the motor 33 can be mounted, and both can be fixed in a connected state by interposing interval holding cylinders 35, 35. The motor 33 is a roll driving motor that drives the feeding rolls 14a to 14d, and the shaft core of the motor shaft 33a of the roll driving motor 33 is configured as described above so that it can coincide with the feeding roll shaft 15. A coupling 37 having a notch 37a formed on the tip side is detachably provided at the end of the motor shaft 33a. On the other hand, a roll pin 38 is provided at the rear end facing the motor shaft 33a on the feeding roll shaft 15 side, and the forward / reverse driving force of the roll drive motor 33 is fed by engaging with the notch 37a of the coupling 37. The configuration is transmitted to the roll shaft 15.

  A pair of feeding devices 8 composed of the roll drive motor 33 and a roll case 17 incorporating components such as various feeding rolls 14a to 14d are provided on the left and right sides, and are detachably attached below the tanks 7 and 7. That is, by means of the bolt members 39, 39... In the vertical direction with the roll case 17 of the feeding device 8 sandwiched between the tanks 7, 7 and the passing cylinder 62 for blowing the fed granular material (application agent). Provided integrally. 41U is a seal rubber interposed between the tank 7 and the roll case 17, and 41D is a seal rubber interposed between the roll case 17 and the lower cylinder 62.

The assembly of the feeding device 8 configured as described above and the disassembly at the time of maintenance can be performed as follows.
First, the rectangular tube shaft 25 is attached and fixed to the feeding roll shaft 15, and then the feeding rolls 14a and 14b are assembled. These feeding rolls 14a, 14b are fitted with fitting members 22, 22, 22, a boss portion having one-way clutches 16x, 16x, a central partition plate 21, and front and rear seal rings 22a, 22b. Further, a case block 27 incorporating the feeding roll 14d is mounted on the feeding roll shaft 15. The case block 27 is preinstalled with a holding portion including the one-way clutch 16y, seal holding rings 29a and 29b, and the like.

  The feeding roll shaft 15 incorporating the feeding rolls 14a and 14b and the feeding roll 14d as described above is attached to the roll case 17 disposed under the tanks 7 and 7 from behind. Then, in the feeding roll shaft 15 attached to the roll case 17, the feeding roll 14 c is fitted to the rectangular tube shaft 25 from the front side of the roll case 17.

  When all of the feeding rolls 14a to 14d are assembled as described above, the seal holding ring 26a is fitted on the front side of the roll case 17 and the lid 26b is mounted, while the packing ring 31 is mounted on the rear side. The fixing plate 32 is mounted with the pinch in between. In this way, the assembly of the constituent members inside the feeding device 8 is completed. When the roll drive motor 33 is mounted, the base plate 34 of the motor 33 is bolted to the fixed plate 32, while the motor shaft 33 a is linked to the feed roll shaft 15 by a coupling 37.

When disassembling the feeding device 8 for maintenance or the like, the procedure is reversed from the above procedure.
As described above, the feeding rolls 14a to 14d and the peripheral constituent members of this embodiment can be assembled conveniently without removing the roll case 17 for mounting.

  In particular, the partition portion 18 is formed in the roll case 17 to be reinforced, and the roll drive shaft 21 is inserted from one side (rear side) across the partition portion 18 so as to extend beyond the partition portion 18 to the other side (front side). ) Are extended and assembled, and one side (rear side) is provided with feeding rolls 14a, 14b and 14d for mounting one-way clutches 16x, 16x and 16y, and the other side (front side) is relatively configured. Therefore, the feeding roll shaft 15 is not connected or separated around the partition portion 18, and the complicated component is on one side ( It can be pulled out to a place where it is easy to ensure a relatively large maintenance space on the rear side, so that workability is impaired even if the other side (front side) is a narrow space. Without it is possible to perform the maintenance easily quickly.

  The feeding roll 14d for feeding a small amount has a small roll space volume formed radially to accommodate the powdered granular material (application agent), and constitutes a case block 27 for holding the feeding roll 14d. Since the small-capacity feeding roll 14d is assembled to the feeding roll shaft 15 penetrating the block 27 and the outer diameter of the case block 27 is the same as the outer diameter of the large-capacity feeding rolls 14a and 14b, the roll case The inner peripheral surface 17 can be formed in the same shape, which is advantageous in processing. In addition, when the outer diameter of the case block 27 is formed to be slightly larger than the inner peripheral surface of the roll case 17, the case block 27 can be pulled out by the feeding roll shaft 15, and the above-described good maintainability can be secured.

  Further, by adopting the mounting configuration of the roll drive motor 33 as described above, the motor shaft 33a can be provided coaxially with the feeding roll shaft 15 of the roll case 17 and both can be coupled to the coupling 37. Can be easily mounted and removed.

  A pair of the feeding devices 8 and 8 are provided under the tank 7, and the roll feeding motors 33 and 33 in the left and right feeding devices 8 and 8 are activated by the ON operation of the spraying switch described later. Further, the left and right boom spreading levers 53L and 53R are provided so as to be independently operable, and are configured such that the motor can be driven by selecting left and right.

  The through cylinders 62 and 62 are respectively looked under the pair of feeding devices 8 and 8, and one end of each of the through cylinders 62 and 62 is communicated with the blow cylinder 63 provided with the blower 9. The other end on the downstream side is configured to communicate with the first jet tube 10.

  The blower device 9 is constituted by a blower fan 9a that is linked to the PTO shaft 64 of the passenger management machine 2 via an electromagnetic clutch 9b, and the blast air enters the through-cylinder 62 through the blower cylinder 63 and is fed out. Is transported in an air stream to reach the first jet tube 10. An air volume adjusting valve 65 is provided in the middle of the blow tube 63, and the air volume adjusting lever 66 can be rotated around the axis.

  A second jet tube 11 is connected to each of the left and right first jet tubes 10 via a bellows tube 67 so as to be bent. The cylindrical body 68 is provided with a lateral support shaft 69, and the second injection tube 11 is connected via the support shaft 69, and in addition to the movement to the storage posture, it is rotated around the lateral support shaft 69. It can be turned up and down and can be switched between a vertical storage position and a horizontal working position. The left or right second jet tube is operated based on the operation of the left / right adjustment lever (not shown) at hand. 11L and 11R can be switched to a vertical posture (non-working posture) or a horizontal posture (working posture). 70L and 70R are traction ropes for interlocking operation of the second jet tube 11L or 11R.

  Subsequently, the control part 12 of the granular spraying apparatus 1 of the said structure is demonstrated. The control unit 12 includes a fertilizer controller 12A, a motor controller 12B, and a main machine controller 12C connected to each other (FIG. 10). Among them, the fertilizer controller 12A includes data necessary for fertilization and herbicide application, for example, the feeding roll. While inputting the motor rotation pulse of the drive motor 33, the selection information by the left and right boom spreading levers 72L and 72R, the drive information of the blower fan 9a, the remaining amount sensors 54 and 54 provided in the tank 7, the motor controller 12B A motor rotation output pulse signal, a motor rotation direction switching signal, etc. are output to (Fig. 10).

The machine controller 12C is configured to transmit vehicle speed data from the means for detecting the vehicle speed to the fertilizer controller 12A.
In addition, the fertilizer controller 12 </ 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. 12A is input to 12A. 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.

The fertilizer controller 12A 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. 12). Hereinafter, the automatic mode and the variable mode will be described.
(auto mode)
If the key switch 73 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 (feeding roll drive motor) is supplied to the motor controller 12B that drives the feeding roll of the feeding device 8 in accordance with the fertilizer application set value and the vehicle speed so that the fertilizing amount per unit area is constant. (Rotation signal) 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 fertilization setting switch 58 is turned on again for a predetermined time (for example, 2 seconds or more) by changing the switch 59U or the decrease switch 59D in units of 1 kg, the value A (kg) is stored (FIG. 13, step 101).

  Next, specific gravity is set (step 102). 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.

  As described above, which of the feeding rolls of the feeding device 8 is used, that is, the type of the feeding roll, is determined depending on whether the fertilizing amount A falls within a preset range of large, medium, or small. The In the case of the present embodiment, when the fertilization amount is determined (steps 102 to 105), the rotation direction of the feeding roll drive motor 33 is determined. That is, when the fertilizing amount A corresponds to a large application amount of, for example, a1 (for example, a1 = 25 kg) or more, the feeding rolls so that the first feeding roll 14a, the second feeding roll 14b, and the third feeding roll 14c are operated. A normal rotation signal is output to the drive motor 33 (steps 106 and 108).

  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 feeding roll drive motor 33 so that the third roll 14c operates (step) 104, 107).

  A reverse rotation signal is output to the feeding roll drive motor 33 so that the fourth roll 14d operates even when the fertilizing amount A corresponds to a small application amount of A <a2 (steps 105 and 107). In addition, although the same motor reverse rotation signal is output as the medium spray amount, the feed spatter from the feeding device 8 is determined depending on whether the spatter is stored in the section A or the section B (step) 108, 109).

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

After the determination of the motor drive rotation direction is made as described above, the feed roll rotation speed is determined after the input of the vehicle speed signal and the determination of the set specific gravity (steps 110 to 113).
The feed roll rotation speed Rb calculated by the fertilizer controller 12A based on the vehicle speed S and the like as described above is output to the motor controller 12B, and the feed roll drive motor 33 is rotationally interlocked based on this 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 74 is turned off or the fan switch 75 is “OFF”, the output of the motor rotation output pulse (feed roll drive motor rotation signal) is stopped. Further, when the vehicle speed becomes high and the motor rotation number calculation value exceeds a preset upper limit value, the buzzer 76 is turned on intermittently with a long sound.

When the set fertilizer amount is changed while the motor rotation output pulse (feeding roll drive motor rotation signal) is being output and changed from a small amount range to a range exceeding this amount (or vice versa), the motor rotation output is left unchanged. The output of the pulse (feeding roll drive motor rotation signal) is stopped, and after a predetermined short time (for example, 100 msec) has elapsed, the rotation direction switching output and the motor rotation output pulse (feeding roll drive motor rotation signal) are output again. .
(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.

During the variable mode period, the variable lamp 77 is turned on.
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.

Further, the feeding roll rotation control based on the changed fertilizer application amount A ′ is configured in accordance with the automatic mode.
.. Are formed in the first nozzle tube 10 and the second nozzle tube 11 at predetermined intervals.

  FIG. 17 shows an example of a collision plate disposed in the nozzle 71 of the first injection tube 10. The collision plate 80 having a V-shaped cross section is naturally sprayed so that the sharpened portion is opposed to the flow direction of the blast. The upper side located in the pipe 10 is inclined so that the upper side in the flow direction is the upper side and the lower side coming out of the pipe from the nozzle 71 is the lower side. By comprising in this way, an inclination guide surface can be formed in the right and left of a flow direction, and it can contribute to the spreading | diffusion of the granular material scattered from the nozzle 71. The V-shaped collision plate 80 is configured to be vertically adjustable with an adjusting bolt 82 with respect to the mounting stay 81 on the lower surface of the injection tube 10. For this reason, a diffusion condition can be adjusted according to properties, such as specific gravity of the granular material spread.

  FIG. 18 shows the configuration of the tip guide tube 83 attached to the tip of the second jet tube 11. The tip guide tube is formed so that the tip side is slightly smaller in diameter, and the larger diameter portion is fitted to the tip of the second jet tube 11. The upper adjustment plate 84 is fixed to the upper side of the inside of the small-diameter portion, and the intermediate adjustment plate 86 is provided with a height adjustment bolt 85 erected from the bottom surface on the lower side, and the connection position with the bolt 85 is the second jet tube. 11 is provided so that it can be adjusted up and down across the vertical center S. Of these, the upper adjusting plate is inclined downward at a predetermined angle. The middle adjusting plate 86 is formed by dividing the front side into three left and right sides from the horizontal plane including the connecting portion with the bolt 85, and is provided so that the downward angle can be adjusted independently. A proper and desired scattering situation can be performed based on the vertical position adjustment of the middle adjustment plate 86 and the downward angle adjustment of the tip division guide surface depending on the properties of the powdered granular material to be dispersed. In addition, the adjustment structure of the vertical angle of the divided guide surface of the middle adjustment plate 86 is configured such that a friction material is formed at the rotation fulcrum and can be adjusted and held at an arbitrary angle.

  An inclined guide plate 87 is disposed at the nozzle holes 71, 71... Of the second injection tube 11 in a bolt-fixed state so as to be adjustable in the longitudinal direction by means of an attachment stay 88 and a long hole 91. The inclined guide plate 87 is provided so as to be resistant to the flow direction of the jet, and the collision portion 87a located in the jet tube 11 is partially divided in the longitudinal direction so that the central collision portion 87b located in the center is directed downward. Bending is formed so that the inclination direction is relatively reversed. By comprising in this way, the amount of scattering from the nozzle 71 and the condition of diffusion can be made appropriate (FIG. 19A). FIG. 19B shows a modified guide 87 ′ of the inclined guide plate, in which an opening 89 having a predetermined size is provided at the center of the upper side, and a portion corresponding to the opening is bent downward to guide the upper side of the opening 89. Since it can be left as a surface, it is possible to guide the collision so that it can be efficiently scattered from the nozzle 71 to the outside.

  FIG. 20 shows a modification 83 ′ of the tip guide tube, and the position of the tip guide tube 83 ′ is vertically shifted so that both end portions of the horizontal portion of the middle adjustment plate 86 ′ can be pointed and fixed. Thus, a plurality of sets of slit holding portions 90U, 90M, and 90L are formed and inserted and held therethrough so that the vertical position of the middle adjustment plate 86 ′ can be changed and adjusted. In addition, although the change depends on the properties of the granular material, “herbicide”, “chemical fertilizer”, etc. are added.

7 Tank 8 Feeding devices 14a to 14d Feeding roll 15 Feeding roll shafts 16x, 16y One-way clutch 17 Roll case 18 Partition part 19 Inflow part 20 Discharge part 27 Case block 27a Block body 27b Partition wall body 27D Inflow part 27d Discharge part 32 Fixing plate 33 Roll drive motor 33a Motor shaft 37 Coupling 62 Cylinder

Claims (3)

A feeding device (8) is provided in the lower opening of the tank (7) so that the particulate matter can flow in. The feeding device (8) includes a feeding roll shaft (15) and a plurality of feeding rolls (14a to 14d). In the granular material feeding device, a through-cylinder (62) is provided below the feeding rolls (14a to 14d) to transfer the granular material fed from the feeding device (8) by a blast. The tank (7) A roll case (17) having an inflow part (19) communicating with the exhaust and a discharge part (20) communicating with the lower cylinder (62) is provided. The roll case (17) has an internal space extending in the longitudinal direction. A partition portion (18) is formed, and the feeding roll shaft (15) is provided in a length from the rear end portion to the front end portion in the longitudinal direction of the roll case (17), and the feeding roll shaft (15) A plurality of feeding rolls are provided on the front end side. A part of the feeding rolls (14c) is detachably provided, and another group of feeding rolls (14a, 14b, 14d) is provided on the rear end side of the feeding roll shaft (15). The feed roll shaft (15) from which (14c) has been removed is inserted into the roll case (17) from the rear side opening portion in the longitudinal direction to the front side beyond the partition portion (18), and the roll case (17 the constructed that assembling a part of the feed roll (14c) from the front opening at the front end of the feed roll axis (15) of)
The other feeding rolls (14a, 14b, 14d) are assembled to the feeding roll shaft (15) via one-way clutches (16x, 16x, 16y),
The other feeding rolls (14a, 14b, 14d) are composed of feeding rolls (14a, 14b) having a large feeding capacity and feeding rolls (14d) having a small feeding capacity. The one-way clutches (16x, 16x, 16y) are A one-way clutch (16x, 16x) that interlocks the feeding roll in conjunction with the forward rotation of the feeding roll shaft (15), and a one-way clutch (16y) that interlocks the feeding roll in conjunction with the reverse rotation of the feeding roll shaft (15). The feeding rolls (14a, 14b) having a large feeding capacity are interlocked with the forward rotation of the feeding roll shaft (15) by a one-way clutch (16x, 16x), and the feeding roll (14d) having a small feeding capacity. characterized by being configured for rotation interlock is accompanied with a one-way clutch (16y) to the reverse rotation of the feed roll shaft (15) Feeding device of particulate matter to be. Among the other feeding rolls (14a, 14b, 14d), the feeding roll (14d) having a small feeding capacity is in phase with the inflow part (19d) and the discharging part (20d) of the roll case (17). A block body (27a) having an inflow portion (27D) and a discharge portion (27d), and a partition wall body (27b) that also serves as a feed roll (14a), is mounted on the feed roll shaft (15). The apparatus for feeding a granular material according to claim 1 , wherein the case block (27) is provided with a case block (27), and an outer periphery of the case block (27) is provided with substantially the same diameter as an inner periphery of the roll case (17) . A fixed plate (32) is provided on the rear surface of the case block (27) in the rear open side of the roll case (17), and the fixed plate (32) is moved axially relative to the end of the feed roll shaft (15). The feeding apparatus of the granular material of Claim 2 provided with the roll drive motor (33) provided with the motor shaft (33a) which contacts / separates via a coupling (37) .

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