JP5246514B2 - Opening and closing shutter device for fertilizer drop port of fertilizer applicator - Google Patents

Description

  The present invention includes a fertilizer machine body mounted on the rear part of a tractor body, an agitator provided in a hopper that accommodates the fertilizer of the fertilizer machine, and a spray blade provided below a fertilizer dropping port at the bottom of the hopper. It is related with the improvement about the switchgear which opens and closes the fertilizer dropping port in the fertilizer of the form which is rotated with the rotational power guide | induced from the output shaft of a tractor, and the fertilizer falling from a fertilizer dropping port is sprayed with a spreading blade.

  A fertilizer machine body is mounted on the body of the tractor inside the hopper, and the agitator that supports the fertilizer to be installed in the body is agitated. As shown in FIG. 1, a fertilizer applicator in a form in which a spraying blade that supports a fertilizer to be sprayed is driven by rotational power that is guided from the PTO shaft of the tractor is normally used as a support device. The support machine frame a is connected to the top link t1 and the lower link t2 of the three-point link type connection hitch provided at the rear part of the vehicle body of the tractor T. Directly mounted on the tractor, the rotating shaft of the agitator c provided in the hopper b of the fertilizer applicator A, and the rotating shaft of the spray vane e disposed below the fertilizer dropping port d at the bottom of the hopper b , Deceleration mission can be mounted on the support machine frame a An input shaft g of the transmission mechanism, which is connected to the transmission mechanism in the frame f and provided on the front side of the deceleration mission case f, is conducted to the PTO shaft of the tractor T via the transmission axis, and the PTO of the tractor T An opening / closing shutter device S that opens and closes the dropping port d by rotation of the shutter plate s as shown in FIG. 2 is provided at the fertilizer dropping port d at the bottom of the hopper b. In S, an operation mechanism h for rotating the shutter plate s by the operation of the electric motor M is connected to the shutter plate s, and the electric motor M is operated to open and close the opening d. It is comprised so that operation may be performed.

  When the fertilizer machine A in this form performs fertilization work on the farm field, first, the tractor T is run to the end of the field to be fertilized, and is stopped once, and the electric motor M is operated to fertilize. Open the drop opening d, switch the PTO shaft of the tractor T, which is controlled to be turned off, to the drive-on state by operating the clutch lever, drive and rotate the PTO shaft, Through the conduction mechanism in the deceleration mission case f, the fertilizer that is conducted and rotated to the rotation operation part such as the rotating shaft of the agitator c in the hopper b, and the fertilizer that falls from the opened fertilizer dropping port d, In this state, the tractor T is run and the range to be spread is moved sequentially so that the fertilizer is sequentially applied from the end to the range to be spread on the field. The fertilizer work done.

  During this fertilization work, when the tractor T comes to be located at the end of the field, etc., and when it comes to a temporary stop at that place, to avoid spreading fertilizer on the same place, The opening / closing shutter device S of the fertilizer dropping port is operated to close the fertilizer dropping port, and the manure spraying operation is temporarily stopped. At this time, the PTO shaft of the tractor T is also switched to the rotation stopped state, and thereby the rotation of the rotation operation unit is stopped. This is because when the fertilizer dropping port is closed and the agitator in the hopper is rotated to stir the fertilizer in the hopper, the fertilizer generated in a granular form is crushed into a powder, This is because it makes it impossible to disperse and spread.

  After stopping the tractor and suspending the spraying work, when running the tractor again and spreading the fertilizer, the fertilizer dropping port when the electric motor was operated by operating the switch was used when starting the work. And the operation control for rotating the PTO shaft of the tractor whose rotation is controlled to be stopped, thereby preparing the fertilizer machine for fertilization work, and then the tractor The fertilizer application work is continued while running.

This type of fertilizer applicator has the following problems.
First, the operation of switching the fertilizer drop opening to the closed state and the operation of switching the PTO shaft of the tractor to the drive-off state, which are performed when the spraying operation is temporarily stopped during the operation, are performed. Since the operation is performed by separately operating the switches and the operation levers arranged around the switch, this switching operation is complicated and the work load on the operator is increased.

  Secondly, the operation of closing the fertilizer outlet and the operation of switching the PTO shaft of the tractor to the drive-off state are performed separately, and there is a time difference between these operations. When the operation of turning off the PTO shaft is performed first, useless leakage of the fertilizer occurs until the fertilizer drop opening is closed. In addition, when the operation to turn the fertilizer drop port “closed” is performed first, the agitator in the hopper is stirred with the drop port closed until the drive of the PTO shaft of the tractor is turned off. This is a point where fertilizer crushing occurs.

  Thirdly, when the spraying operation is paused and then started again during the operation, the operation of switching operation for opening the fertilizer drop opening and the PTO shaft of the tractor are driven. By performing the switching operation to turn on each separately, the problem described above also occurs in this case.

  Fourthly, the opening and closing means for opening and closing the fertilizer dropping port by the operation of the electric motor is configured to close the dropping port and open the dropping port. Because it is done by operation, when adjusting the fertilizer application amount during work, the tractor is temporarily stopped and manual opening adjustment operation is performed. This opening adjustment operation is added to the two operations of switching the opening and closing of the drop opening that is performed when pausing the vehicle and switching the on / off of the drive of the PTO shaft of the tractor. The work load is further increased.

  The problem to be solved by the present invention is that the above-mentioned problems occurring in the conventional fertilizer applicator are caused in the conventional fertilizer applicator when the fertilizer dropping port is opened and closed at the time of temporary stop during work. Control operation of the electric motor that opens and closes the provided opening and closing device, and control to turn on and off the clutch of the PTO shaft that is the drive shaft in order to switch the rotation operation part such as an agitator between the drive state and the stop state Since the two control operations, namely, the operation, must be performed separately and sequentially, the two controls are used as countermeasures to solve the above-described problem. If one control operation among the operations is performed, the other control operation is automatically performed simultaneously in conjunction with it, so by performing an operation to turn on / off the driving of the PTO axis of the tractor, Fertilizer at the same time It lies in constituting the fertilizer machine so that the control operation for opening and closing the drop port is automatically performed.

As a means for solving the above-described problems, the present invention provides:
A frame a for supporting the machine body of the fertilizer applicator A is mounted on the vehicle body of the tractor T via a connecting hitch, and a rotation operating part such as a rotating shaft of an agitator c pivotally supported inside a hopper b to be mounted on the machine body is attached to the tractor T In the fertilizer A that is driven by the conduction mechanism of the PTO shaft through the transmission mechanism, the electric motor M that opens and closes the open / close shutter device S attached to the fertilizer dropping port d is a motor that rotates forward and backward, and the electric motor The M drive circuit Z includes a relay switch R1 that is actuated to drive the electric motor M to the forward rotation side that is actuated to the side where the shutter plate s is opened, and an electric motor that is actuated to be on. A relay switch R2 that drives M to the reverse side that operates on the side where the shutter plate s is closed is provided in a connected state, and the rotational speed at which the rotational speed of the rotational motion part is detected is provided in the rotational motion part. An intelligent device K is provided, and when the rotational speed detector K detects a rotational speed equal to or higher than a predetermined rotational speed adapted to the operation of the rotational operation section, the relay switch R1 is activated to open the shutter plate s. When the electric motor M is operated to the forward rotation side and a rotation speed equal to or lower than the predetermined rotation speed is detected, the relay motor R2 is operated to operate the electric motor M to the reverse rotation side that closes the shutter plate s. An opening / closing shutter device for a fertilizer dropping port of a fertilizer application machine, wherein the electric motor M is controlled by a rotation speed detector, and the opening / closing operation of the dropping port d is performed by an on / off operation of a clutch of a PTO shaft. Is to raise. In addition,
The electric motor M that opens and closes the shutter plate s of the open / close shutter device S attached to the fertilizer drop port d is a forward / reverse pulse motor M ′ that oscillates a pulse amount corresponding to the rotation amount, and the fertilizer drop port The opening amount of d is set in the controller C that controls the electric motor M as a pulse amount that is the amount of rotation of the electric motor M that moves the shutter plate s until the opening amount is reached. When detecting a rotation speed equal to or higher than a predetermined rotation speed adapted to the operation of the rotation operation section, the electric motor M opens the shutter plate s to a position where the set opening amount is reached. When the rotational operation is performed by the amount of the pulse that is the amount of rotation to be moved, the opening d is opened to the set opening amount, and when a rotational speed equal to or lower than the predetermined rotational speed is detected, the electric motor M The electric motor M is controlled by the rotational speed detector so as to rotate the pulse amount corresponding to the set opening amount to close the dropping port d to the side where the rate s is closed, and the clutch of the PTO shaft. An opening / closing shutter device for a fertilizer dropping port of a fertilizer applicator is provided in which the opening / closing operation of the dropping port d is performed by turning on / off of the fertilizer.

  Since the means of the present invention automatically opens and closes the fertilizer drop opening according to the rotational speed of the PTO shaft of the tractor, it is not necessary to perform the opening and closing operation of the fertilizer drop alone. The opening / closing operation of the fertilizer drop opening can be performed simultaneously with the turning on / off operation of the drive of the tractor's PTO shaft. The turning on / off operation of the tractor's PTO shaft and the opening / closing operation of the fertilizer dropping opening can be simplified, thereby reducing the work load. Moreover, since the turning on / off operation of the PTO shaft and the opening / closing operation of the fertilizer dropping port can be performed without a time difference, wasteful leakage of the fertilizer is reduced. Furthermore, since unnecessary time for fertilizer agitation is eliminated, fertilizer crushing and working power are reduced.

It is a side view of the state which connected and installed the rear part of the tractor of the fertilizer of the form which drives a rotation operation part with the conduction power from the PTO axis of a tractor. It is a vertical side view of the fertilizer same as the above. It is a vertical side view of the fertilizer machine which enforces this invention means. It is a top view of the opening-and-closing shutter apparatus part provided in the fertilizer dropping port of the fertilizer same as the above. It is the disassembled perspective view of the opening / closing shutter apparatus of the fertilizer dropping port same as the above. It is explanatory drawing of the drive circuit of the electric motor of an opening-and-closing shutter apparatus same as the above.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 3: shows the vertical side view of the fertilizer machine which implements the means of this invention. In FIG. 3, the fertilizer machine A omits the tractor and shows only the fertilizer machine A. However, the support machine frame a supporting the fertilizer machine A is mounted on the vehicle body of the tractor via a connecting hitch. Thus, the fertilizer of the form in which the rotation operation unit such as the rotation shaft of the agitator c that is pivotally supported inside the hopper b equipped in the fertilizer applicator A is transmitted to the PTO shaft of the tractor through the transmission mechanism and driven. Moreover, in this Example, the fertilizer of the type which has the spreading | spreading blade | wing e rotating is illustrated, However, The fertilizer of the form of the lime saw which does not have the spreading | spreading blade | wing e is also included.

  A supporting machine frame a for supporting the fertilizer machine A and connecting it to a connecting hitch such as a top link hitch and a lower link hitch provided at the rear part of the vehicle body of the tractor T is shown in FIG. In FIG. 2, only the outline is shown by the one-dot chain line, and the hopper b into which the fertilizer is put is omitted from the upper half side and only the lower half side.

  The agitator c that is pivotally supported inside the hopper b is supported by a stay 11 that protrudes from the peripheral surface of the vertical shaft 10 arranged at the central portion of the hopper b, and the cone 10 of the hopper b is rotated by the rotation of the shaft 10. It is formed in the shape of a scraper that rotates along the inner surface of the formed inclined wall on the lower side, and the lower end side of the shaft 10 serving as the rotating shaft is on the upper surface side of the deceleration transmission case f that is supported on the support machine frame a. The rotating power is transmitted from the PTO shaft of the tractor T to the input shaft g provided on the front end side of the deceleration mission case f, which is connected to the pivoted output shaft 20, and is stored in the deceleration mission case f. By driving and rotating the output shaft 20 through the conduction mechanism, the output shaft 20 rotates in the direction indicated by the thick line arrow in FIG. 3 and operates to stir the fertilizer in the fertilizer hopper b.

  The spray vane e that is pivotally supported below the fertilizer drop port d at the bottom of the hopper b is in a state in which a boss portion 30 serving as a rotation center is fitted on the output shaft 20 that protrudes to the upper surface side of the deceleration transmission case f. By mounting on the upper surface side of the case f and fitting the boss part 30 to the output shaft 20, the hopper 30 is rotated by being driven by the rotational power conducted from the PTO shaft in the same manner as the agitator c described above. b The fertilizer falling from the fertilizer drop d established at the bottom is received on the upper surface side, and it operates to swing out and spread by rotation.

  As shown in FIG. 4, the fertilizer dropping port d provided at the bottom of the hopper b is located at the left and right (up and down in the drawing) both sides of the bottom plate 40 at the bottom of the hopper b and is forward (right in the drawing). In addition, an opening 41 arranged so as to be symmetrical to the left and right and an adjustment hole 50 formed in the shutter plate s provided so as to be in sliding contact with the lower surface side of the bottom plate 40 are formed by superposition. Has been.

  As shown in FIG. 5, a shutter plate s provided with an adjustment hole 50 that overlaps one of the two openings 41 provided symmetrically with the bottom plate 40, on the lower surface side of each drop opening d. And a shutter plate s provided with an adjustment hole 50 to be overlapped with the other opening 41 are arranged in a stacked state so as to slide in contact with the lower surface of the bottom plate 40 of the hopper b and rotate. The shutter plate s is rotated by an operating mechanism h driven by the electric motor M, so that the degree of polymerization between the adjustment hole 50 provided in the shutter plate s and the opening 41 provided in the bottom plate 40 is changed to fall. The opening degree of the mouth d is adjusted, and when the degree of polymerization is set to zero, the fully closed state is established, and when the polymerization is completed, the fully opened state is established.

  The two shutter plates s and s arranged in a superposed state on the bottom surface of the floor plate 40 so that the respective adjustment holes 50 are opposed to the two openings 41 and 41 provided in the bottom plate 40 are shown in FIG. As shown in the figure, the outer periphery of the bearing bush 43 inserted into the center hole 42 provided in the bottom plate 40 of the hopper b is formed in a disc shape having a center circle 51 to be fitted. The bearing bush 43 is rotatably fitted and held by a washer 52 and a retaining ring 53 fitted to the bearing bush 43 from below, and each of the two shutter plates s has each of them. Actuating pieces s ′ projecting in radial directions are provided in symmetrical portions at a part of the peripheral edge, and connecting rods 60 are respectively connected to the operating pieces s ′ and are operated by the electric motor M to the connecting rods 60. The structure h is connected, and the operation of the operating mechanism h causes the left and right connecting rods 60 to move back and forth in synchronization, thereby rotating the two shutter plates s in the opposite directions by the same angular amount. The degree of polymerization between the adjustment holes 50 provided in the plates s and the opening 41 of the bottom plate 40 is changed so that the two fertilizer dropping openings d are opened and closed synchronously.

The operating mechanism h has an upper end connected to each rear end of the left and right connecting rods 60, and a lower end connected to a link sleeve 62 that is rotatably fitted to a support shaft 61 that can be pivoted on the support machine frame a. Left and right link arms 63 and 63 that are integrally connected and rotate back and forth about the support shaft 61;
The base end side is connected to one link arm 63 of the left and right link arms 63, 63 via a long hole 64 and a connecting pin 65, and the intermediate portion is parallel to the support shaft 61 to support machine frame a An operating arm 67 that is pivotally supported by a support shaft 66 that is mounted on the front end and that has a distal end formed in a fan-shaped gear plate 67a, and a lower end that rotates back and forth by the rotation of the gear plate 67a;
A small gear 69 which is attached to the output shaft of the speed reducer 68 supported on the mounting base a ′ assembled and supported on the support machine frame a and meshes with the fan-shaped gear portion G on the periphery of the gear plate 67a, and rotates.
And an electric motor M which is mounted on the mounting base a ′ so as to drive and rotate the small gear 69 and an output shaft is connected to an input shaft of the speed reducer 68.

  When the small gear 69 rotates counterclockwise in FIG. 5 by rotating the motor M to the forward rotation side, the gear portion G of the gear plate 67a is sent downward, and the operating arm 67 is centered on the support shaft 66. The link arm 63 connected to the connecting pin 65 and the long hole 64 is rotated forward to push the connecting rod 60 forward, and the lower shutter plate s is rotated clockwise. The right side of the adjustment hole 50 that is open on the left side of the bottom plate 40 is overlapped with the opening 41 on the left side of the bottom plate 40 and the tail end side is open on the right side of the bottom plate 40. A state of overlapping with the opening 41 is set.

  Further, the rotation of one link arm 63 causes the other link arm 63 to rotate in synchronism via the link sleeve 62 and push forward, pushing the right connecting rod 60 forward, and the upper shutter plate s. Rotating counterclockwise, the adjustment hole 50 opened in the plate s is positioned so that the tip end side thereof overlaps below the right opening 41 formed on the right side of the hopper bottom plate 40, and the tail It is assumed that the end side is positioned so as to overlap below the left opening 41 opened on the left side of the bottom plate 40. Thus, the two drop openings d · d formed by the opening 41 provided in the seat plate 40 and the adjustment hole 50 provided in the shutter plate s are simultaneously opened.

  When the electric motor M rotates in the reverse direction, the small gear 69 rotates in the clockwise direction, and the fan-shaped gear portion G of the gear plate 67a is fed upward to pull back the left and right operating arms 67 and 67. Rotate backward, pull the left and right connecting rods 60 toward you, and move the two overlapping shutter plates s clockwise to the right plate s and to the left to the left plate s. 5, the adjustment holes 50 provided in them occupy the state positions indicated by solid lines in FIG. 5, and the opening 41 on the right side of the seat plate 40 is closed by the plate portion of the upper shutter plate s. One opening 41 is closed by the lower shutter plate s, and the left and right drop openings d and d are closed simultaneously.

  In this example, the electric motor M that operates the operating mechanism h that drives the open / close shutter device S that opens and closes the shutter plate is a forward / reverse electric motor and also serves as a drive unit for the open / close shutter device. This on / off control of the electric motor M is performed in conjunction with the on / off operation of the clutch for turning on / off the driving of the PTO shaft of the tractor T.

  The electric motor M is connected to a controller C mounted on the body of the tractor T by a harness H and a cord for guiding current to the electric motor M, and a current guided through the cord from the battery B mounted on the body of the tractor T. The controller C is controlled by a control circuit incorporated in the controller C, and is rotated by controlling the drive circuit Z. The drive circuit Z incorporated in the controller C is turned on to rotate the electric motor M so that the shutter plate s moves to the side where the drop port d is opened. When the relay switch R1 is driven to the forward rotation side, and the on-operation is performed, the electric motor M is rotated in the reverse direction that causes the shutter plate s to operate toward the side that closes the drop port d. Is connected to a relay switch R2 that is driven to the side, and a rotation for detecting the number of rotations of the spraying blade e is provided at a lower surface side portion of the spraying blade e that is a rotation operation unit of the fertilizer applicator A. A rotation speed detector K comprising a sensor k1, a rotation sensor k2 for transmitting the detected rotation speed, and a rotation speed detector K is provided. The rotation speed detector K is connected to the controller C via the harness H and connected to the controller C. The rotation speed signal is transmitted to a microcomputer (microcomputer) incorporated in the controller C, and the rotation speed is determined based on the rotation speed sufficient for the spraying blade e to perform a predetermined spraying action. When the number of revolutions is less than a few, and the rotation speed is low and the predetermined spraying action cannot be achieved, a signal for turning it on is sent to the relay switch R2 provided in the drive circuit Z by the processing by the microcomputer. When R2 is turned on, the electric motor M is rotated in the reverse direction, the shutter plate s is operated in the closed side, the dropping port d is closed, and the rotation speed detector K is rotated at the predetermined rotation speed or higher. When the number is detected, a signal for turning it on is sent to the relay switch R1 provided in the drive circuit Z by microcomputer processing, and the electric motor M is rotated to the forward rotation side. Thus, the shutter plate s is actuated to the open side to open the drop opening d, whereby the operation of disengaging the clutch of the PTO shaft of the tractor T is performed to conduct power to the PTO shaft. , The rotational speed of the spraying blade e, which is the rotation operating part of the fertilizer applicator, thereby decreases, so that the shutter plate s of the dropping port d is actuated to close the closing port d, When the operation to engage the clutch of the PTO shaft is performed, the rotation speed of the spraying blade e, which is the rotation operating portion of the fertilizer applicator, increases to a predetermined rotation speed, so that the shutter plate s is opened. Then, the opening d is opened, and the shutter plate s is opened and closed in conjunction with the operation of turning on / off the driving of the PTO shaft.

  Thus, when the shutter plate s performs the opening / closing operation of the drop opening d in conjunction with the turning-on / off operation of the PTO shaft, the electric motor M that operates the shutter plate s closes the drop opening d. The state position to be opened and the state position to be opened are rotated to a position that is the end of the rotation operation, and are rotated in contact with a regulating member (not shown) provided to regulate the end of the rotation operation. When the operation is stopped, the drive circuit Z is controlled to be turned off by a signal transmitted from the transmitter attached to the regulating member, so that the drive is cut off. Are held and fixed at the open position and closed position, respectively.

  In this example, the basic configuration is the same as that of the first embodiment, and the configuration is the same. The opening / closing operation of the drop opening d is linked to the operation of turning on / off the PTO shaft. The opening d is opened and closed by causing the shutter plate s to open and close by the operation of the operating mechanism h by the electric motor M. This is an example in which the opening degree of the drop opening d can be set to a desired opening amount when it is opened, and can be changed and adjusted to the desired opening amount.

  In this example, the electric motor M is a forward / reverse pulse motor that oscillates a pulse amount corresponding to the rotation amount.

  Then, by the operation of the electric motor M, the operating mechanism h is operated in the order of the small gear 69 → the fan-shaped gear portion G → the operating arm 67 → the link arm 63 → the connecting rod 60 to rotate the shutter plate s. By changing the degree of polymerization between the adjustment hole 50 provided in s and the drop opening d provided in the bottom plate 40, the shutter plate s is rotated to the opening side in the opening / closing operation of the drop opening d performed. The opening amount (opening degree) that is the opening area of the dropping port d when the dropping port d is opened corresponds to the rotation amount of the electric motor M that rotates the shutter plate s until the opening amount is set. Therefore, it is calculated as a pulse amount that is the rotation amount of the electric motor M, and this is set in the controller C that controls the electric motor M.

  As a result, when the electric motor M is operated to turn the shutter plate s to the open side by turning on the relay switch R1 of the drive circuit Z, the electric motor M is moved by the pulse amount set in the controller C. When the drop opening d is closed and the drop opening d is closed, the electric motor M rotates reversely by the pulse amount to fully close the shutter plate s. Rotate to state position.

  As shown in FIG. 3, the pulse amount set in the controller C is displayed as a digital number on the display 70 provided in the body 7 of the controller C. The pulse amount can be arbitrarily changed and adjusted by operating an opening adjustment switch 71 provided in the container body 7.

  If the opening amount adjustment switch 71 is operated to change the pulse amount to be set, the electric motor M rotates by the rotation amount corresponding to the changed and set pulse amount, and the opening d is opened. The opening when it is done will be changed.

  The operation of changing the pulse amount by the opening adjustment switch 71 can be performed even during fertilization work in which the PTO shaft is driven, regardless of the “on” and “off” operations of the PTO shaft.

  During the operation, when the opening adjustment switch 71 is operated to change the set pulse amount to increase or decrease, the electric motor M is controlled by a control process by a microcomputer set in the controller C. However, a rotation amount corresponding to a pulse amount corresponding to a difference between the set pulse amount and the changed pulse amount is rotated to the forward rotation side or the reverse rotation side to obtain a changed opening degree.

  72 is a power switch assembled to the body 7 of the controller C so as to operate the power on / off, 73 is a state in which the open / close shutter device S operates in conjunction with the on / off operation of the PTO shaft, and the open / close shutter device. S is not interlocked, and the interlock switch 74 provided in the controller C so that only the on / off of the PTO axis can be switched independently is operated by operating the interlock switch 73 so that the PTO axis is not interlocked. The shutter opening / closing switch provided to operate the opening / closing shutter device S alone.

  These switches operate as described below with reference to the circuit explanatory diagram of FIG. When the power switch 72 is turned on, the power-on relay 80 opens, electricity flows through the circuit power circuit 81, and power flows through the microcontroller 82. At the same time, a signal is input from the microcontroller 82 to the relay drive circuit 83, the relay is activated, and the power-on relay 80 is kept in the “power-on state” while being on.

  When the opening adjustment switch 71 sets the opening and the shutter opening / closing switch 74 is opened, the pulses from the electric motor M are arranged by the encoder filter 84 and counted by the counter in the microcontroller 82 to be equal to the set opening. Until the number of pulses is reached, a signal is sent to the relay drive circuit 83, the relay switch R1 of the drive circuit Z is turned on, the motor M is rotated, and the drop opening d is opened.

  If the PTO interlock is turned OFF by operating the interlock switch 73, the shutter s remains open by the above movement, but if the PTO interlock is ON, the rotation sensor (rotation speed detector) K exceeds the set rotation speed. If it is detected, the drop opening d remains open, but if the rotation sensor K detects a value equal to or lower than the set rotational speed, the operation returns to the home position return (= shutter closing) operation.

  When the work is finished and the shutter open / close switch 74 is closed, or when the PTO interlock is ON and the rotation sensor K detects a rotation speed lower than the set number of rotations, the motor M performs an origin return (= shutter closing) process.

  The origin return process is performed as follows. First, the motor M moves in the reverse direction (shutter closing direction). It moves until there is no pulse change from the motor M within a short time (= the state where the large gear plate hits the zero point position and the motor does not reverse) (= the shutter is closed). When the pulse change disappears, the motor M stops.

A Fertilizer B Battery C Controller H Harness G Gear section K Speed detector M Electric motor M 'Pulse motor R1 R2 Relay switch S Open / close shutter device T Tractor Z Drive circuit a Support machine frame a' Mounting base b Hopper c Agitator d Fertilizer drop e Sprinkler blade f Deceleration mission case g Input shaft h Actuation mechanism k1 k2 Rotation sensor s Shutter plate s' Actuation piece t1 Top link t2 Lower link 10 Axis 11 Stay 20 Output shaft 30 Boss part 40 Bottom plate 41 Opening 42 Center hole 43 Bearing bush 50 Adjustment hole 51 Center circle 52 Washer 53 Retaining ring 60 Connecting rod 61 Support shaft 62 Link sleeve 63 Link arm 64 Long hole 65 Linking pin 66 Support shaft 67 Actuating arm 67a Gear plate 68 Reducer 69 Small gear 7 Equipment 70 Display 1 opening adjustment switch 72 power switch 73 interlocking switch 74 shutter switch 80 power-on relay 81 circuit power supply circuit 82 the microcontroller 83 relay driving circuit 84 encoder filter

Claims (2)

  The frame (a) that supports the body of the fertilizer applicator (A) is mounted on the body of the tractor (T) via a connecting hitch, and the rotation of the agitator (c) that is pivotally supported inside the hopper (b) that is mounted on the body Opening and closing shutter device (S) attached to fertilizer drop port (d) in fertilizer application machine (A) that drives the rotation operation part such as shaft to the PTO shaft of tractor (T) through a conduction mechanism The electric motor (M) to be operated is a motor that rotates in the forward and reverse directions, and the drive circuit (Z) of the electric motor (M) is turned on so that the electric motor (M) has the shutter plate (s). The relay switch (R1) that operates on the forward rotation side that operates on the opening side and the on-side operation on the relay switch (R1) drives the electric motor (M) on the reverse rotation side that operates on the side where the shutter plate (s) is closed. The relay switch (R2) A rotation speed detector (K) for detecting the rotation speed of the rotation operation section is provided in the rotation operation section, and the rotation speed detector (K) is a predetermined value adapted to the operation of the rotation operation section. When the number of rotations is detected, the relay switch (R1) is actuated to operate the electric motor (M) in the forward direction so as to open the shutter plate (s). When the rotation speed of the motor is detected, the rotation speed detector operates the electric motor (M) so that the relay motor (R2) is operated to operate the electric motor (M) on the reverse side where the shutter plate (s) is closed. An opening / closing shutter device for a fertilizer dropping port of a fertilizer applicator, wherein the opening and closing operation of the dropping port (d) is performed by an on / off operation of a PTO shaft clutch.   The electric motor (M) for opening and closing the shutter plate (s) of the open / close shutter device (S) attached to the fertilizer dropping port (d) is a forward / reverse type pulse motor that oscillates a pulse amount corresponding to the rotation amount. (M ′), and the opening amount of the fertilizer drop opening (d) is the amount of pulse that becomes the amount of rotation of the electric motor (M) that moves the shutter plate (s) until the opening amount is the opening amount. M) is set in the controller (C) for controlling, and when the rotation speed detector (K) detects a rotation speed equal to or higher than a predetermined rotation speed adapted to the operation of the rotation operation unit, An opening amount in which the motor (M) rotates the shutter plate (s) by a pulse amount that is a rotation amount that moves the shutter plate (s) to the opening side to a position where the opening amount is set to set the drop opening (d). The predetermined rotation speed When the lower rotational speed is detected, the electric motor (M) rotates to the side that closes the shutter plate (s) by a pulse amount corresponding to the set opening amount to close the drop port (d). The electric motor (M) is controlled by a rotation speed detector so that the opening / closing operation of the drop opening (d) is performed by the on / off operation of the clutch of the PTO shaft. An opening / closing shutter device for the fertilizer drop port of the fertilizer applicator.

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