JP6333159B2 - Normal combine - Google Patents

Description

  The present invention relates to an ordinary combine that includes a reaping device and a threshing device, and is provided with a dust removing device having a rotary fan in a feeder that supplies the threshing cereal from the reaping device to the threshing device.

  Such a combine is disclosed in, for example, Patent Document 1, and a feeder for conveying the harvested cereal meal to the threshing device is provided at the rear of the harvesting device provided in front of the traveling machine body. A dust discharge device is provided at the feeding start end of the feeder. By this dust removal device, dust such as dirt that has entered the feeder case together with the harvested cereal and dust generated in front of the feeder are sucked and discharged to a place away from the operation unit. Further, the dust discharger is configured such that the rotary fan of the dust discharger operates to perform the dust discharge operation only during the cutting operation in which the harvesting clutch is operated and the crop is harvested and conveyed toward the threshing device. It is configured.

JP2013-027367A (FIGS. 3, 4, and 5)

  In the ordinary combine according to Patent Document 1, it is possible to suppress the dust accompanying the cutting operation from entering the operation unit by the dust removing device. It can happen to get tangled. An emergency stop is possible when overcurrent flows to the motor that rotates the rotating fan due to a large amount of entanglement in the rotating fan. It will be a burden. For this reason, it is desired to suppress the entanglement of the harvested grain culm and leaves on the rotating fan in advance as much as possible.

According to the present invention, a normal combine having a reaping device and a threshing device has a feeder that supplies the threshing mash from the reaping device to the threshing device, and a rotary fan, and is provided in a feeder case of the feeder. A dust removal device that sucks and discharges dust around the cutting device through the feeder case to the outside, a motor that drives the rotary fan forward and backward, a motor control unit that controls the motor, and the motor control unit And a motor reverse rotation command unit for outputting a reverse rotation command for commanding the reverse rotation drive of the motor.The feeder is equipped with a cereal transport conveyor in the feeder case, and is located above the cereal transport conveyor. A cedar sensor for detecting the reaped sorghum is provided on the inner surface of the ceiling wall of the feeder case. Is the motor control unit have to stop the motor.

According to this configuration, when it is considered that there is a possibility that the rotating fan is entangled with the harvested culm slimming or leaves, the rotating fan is rotated in the reverse direction so that the Leaves can be removed. Furthermore, since the flow of wind by the rotating fan is reversed, it is also possible to expect the effect of removing the accumulated matter at other locations that have been clogged until then.
Before the slimming grains or leaves of the large cereal grains enter the dust removal device, they pass through the inner surface of the feeder case ceiling wall. In this configuration, since the motor is stopped when the grain detector detects a large slime or leaf of the harvested grain cake, an increase in the motor load due to excessive entanglement with the rotating fan is avoided. The

  In a preferred embodiment of the present invention, a sequential reverse rotation management unit is provided that sequentially gives a reverse rotation timing to the motor reverse rotation command unit, and the motor reverse rotation command unit outputs the reverse rotation command based on the sequential reverse rotation timing. . According to this configuration, the rotating fan is rotated in reverse at a predetermined time interval or when a specific condition is satisfied, so that the culm flesh and leaves entangled with the rotating fan are periodically removed. Become. These time intervals and conditions may be constant, may be changed as the work time elapses, or may be selected depending on the work amount and work type.

  A specific work state that requires less drive to the dust removal device, or a specific work state that is considered to be likely to have the harvested culm slime or leaves tangled in the rotating fan (including specific timing) ) Can be obtained empirically and statistically in advance. For example, the fact that the combine is in such a specific work state can be estimated by evaluating a sensor or switch provided in the combine. Based on such knowledge, in one of the preferred embodiments of the present invention, a work state detection unit that detects a specific work state of the combine and outputs a specific work state detection signal is provided, and the motor reverse rotation command is provided. The unit outputs the reverse rotation command based on the specific work state detection signal. According to this configuration, the motor that drives the rotary fan of the dust removal device triggered by the specific work state detection signal output when the work state detection unit detects the specific work state of such a combine. Rotates in reverse. As a result, the rotary fan effectively reversely rotates, and the slimmings, leaves, etc. of the cereal tangled around the rotary fan are removed.

  Original dust removal device that discharges dust, such as dust that has entered the feeder case together with the harvested cereal rice cake, and dust generated in front of the feeder to a place away from the boarding operation part when the rotating fan of the dust removal device is reversed. Can no longer function. For this reason, the reversal of the rotary fan may be conditioned so as to be performed in a situation where the harvested cereals do not flow in the feeder case. Therefore, in one of the preferred embodiments of the present invention, the work state detection unit determines that the harvested cereal is not flowing in the feeder case based on a signal from the state detection sensor. Detect as one of the states.

  In general, it is not necessary to continue the reverse rotation drive of the rotary fan for a long time in order to remove the slime and leaves of the cereal tangled around the rotary fan. The appropriate reversal time can be estimated in advance according to the combine performance, the size of the rotating fan, and the type of harvested crop. For this reason, in one preferred embodiment of the present invention, the reverse rotation driving of the motor by the reverse rotation command is executed for a predetermined time that can be set in advance.

  In order to avoid damage to the motor itself and the motor control system due to excessive current flowing through the motor even in an unexpected state, the motor is provided with a breaker that detects excess current and cuts off power supply. It is preferable.

It is a schematic diagram which shows the basic control principle with respect to the dust removal apparatus by this invention. It is a whole side view of an ordinary combine. It is a whole top view of a normal combine. It is a partial vertical side view of a cutting and conveying apparatus. It is a vertical front view of a dust removal apparatus. It is a functional block diagram of a control unit.

  Prior to describing a specific embodiment of a conventional combine according to the present invention, FIG. 1 is used to explain the basic control principle for a dust removal device that characterizes the present invention. Here, the reaping device 15, the threshing device 13, and the feeder 2 that supplies the threshing cereal meal from the reaping device 15 to the threshing device 13 are schematically shown. The feeder 2 includes a culm transport conveyor 3 that transports the harvested cereal mash and a feeder case 20 that covers the cereal transport path of the cereal transport conveyor 3. Around the feeder case 20, for example, at the upper part of the feeder case 20, a dust discharging device 4 having a rotating fan 40 that sucks dust in the feeder case 20 and discharges it to the outside is provided.

  The rotary fan 40 is driven by a motor M so as to be able to rotate forward and backward. The motor M is driven by a control signal from the motor control unit 61, that is, a normal rotation signal, a reverse rotation signal, a stop signal, and the like. Various types of switches, sensors, and the like are mounted on the ordinary combine, and various working states of the combine are detected. Among such work states, a work state detection unit 8 that detects a specific work state related to the operation of the dust removal device 4 from a detection signal such as a switch or a sensor and outputs a specific work state detection signal. Is provided. The motor reverse rotation command unit 62 sends the reverse rotation of the motor M to the motor control unit 61 based on the sequential reverse rotation timing sequentially output from the sequential reverse rotation management unit 63 or the specific work state detection signal output from the work state detection unit 8. Outputs reverse rotation command to command driving. Upon receiving a reverse rotation command, the motor control unit 61 gives a reverse rotation signal to the motor M to drive the motor M in the reverse direction. The sequential reverse management unit 63 can be simply configured by a programmable timer.

There are various conditions for the work state detection unit 8 to output the specific work state detection signal and the motor reverse rotation command unit 62 to output the reverse rotation command. Some examples are shown below.
(1) A reverse rotation command is output on condition that the harvested cereals are not flowing in the feeder case 20. Specifically, a grain detector 7 for detecting a harvested grain basket is provided on the inner surface of the ceiling wall of the feeder case 20 above the grain conveyor 3 of the feeder 2. Further, the work state detection unit 8 detects a specific work state based on the grain detection signal from the grain detector 7, and the motor reverse rotation command unit 62 is configured to output the reverse rotation command based on the specific work state. .
(2) A state in which a reaping clutch that transmits power to the reaping device 15 is included and the cereal detector provided in the entrance region of the threshing device 13 does not detect the cereal is regarded as a specific work state. An example of this state is a state in which the combine harvests the planted cereal group. When this specific work state is detected, it is presumed that the harvesting work is in progress but the cereals do not flow into the feeder 2, so that a reverse rotation command is output.
(3) The state where the reaping device 15 is raised is regarded as the specific work state. Even during the harvesting operation, the harvesting device 15 rises at the time of turning in the field, but the rise of the harvesting device 15 confirms that the cereals do not flow into the feeder 2. Therefore, this increase is regarded as a specific work state, and a reverse rotation command is output.
(4) When the sensor that detects the threshing processing amount in the threshing device 13 detects that the threshing processing amount is zero or extremely small, it can be estimated that the cereal meal is not substantially flowing into the feeder 2. This state is regarded as a specific work state, and a reverse rotation command is output.
(5) A state in which the clutch for transmitting power to the auger equipped in the reaping device 15 is engaged and the auger is in a posture other than the retracted posture (for example, the discharging posture) is regarded as a specific work state. When this specific work state is detected, it is presumed that no substantial reaping work has been performed and the cereal straw does not flow into the feeder 2, so that a reverse rotation command is output.

  The primary purpose of the reverse rotation of the motor M is to remove the slime and leaves of the corn that is entangled with the rotary fan 40, so it may be a predetermined time of several seconds to several tens of seconds. It is better to be able to adjust the reversal time according to the type and growth condition. Alternatively, the reverse rotation may be stopped when the load of the motor M is detected and the load becomes light, for example, when almost no-load rotation is detected.

  Regardless of forward rotation or reverse rotation, when a large amount of cereals are intertwined and a large load is applied to the motor M, damage to the motor M must be avoided. For this reason, in one of the preferred embodiments of the present invention, the motor is provided with a breaker B that detects excess current and cuts off power supply.

  Next, one specific embodiment of the ordinary combine according to the present invention will be described with reference to the drawings. FIG. 2 is an overall side view of an ordinary combine, and FIG. 3 is an overall plan view. As shown in FIGS. 2 and 3, the ordinary combine is provided with a crawler type traveling machine body 11. A driving unit 12 is provided at the front of the traveling machine body 11. A threshing device 13 and a grain tank 14 are juxtaposed in the left-right direction behind the operation unit 12. Further, a cutting device 15 is provided in front of the traveling machine body 11. At the rear part of the reaping device 15, a feeder 2 that conveys the reaped cereal meal to the threshing device 13 is provided.

  As shown in FIG. 3, the feeder 2 includes a culm transport conveyor 3 and a feeder case 20 that covers the culm transport conveyor 3 and the harvested culm to be transported. At the front end of the feeder case 20, a front rotating body 31 constituting the cereal conveying conveyor 3 is rotatably supported. Similarly, a rear rotating body 32 constituting the cereal conveying conveyor 3 is rotatably supported at the rear end of the feeder case 20. A pair of left and right transport chains 33 are wound around the front rotating body 31 and the rear rotating body 32. A pair of left and right transport chains 33 is provided with a transport plate 34. The pair of left and right transport chains 33 are rotated forward in the direction of arrow A (FIG. 4) by a forward rotation mechanism (not shown), and reversely rotated in the direction opposite to arrow A by a reverse rotation mechanism (not shown).

  Further, a dust suction port 210 is formed in the ceiling wall 21 of the feeder case 20. Above the dust suction port 210, a dust discharge device 4 is provided that sucks dust in the feeder case 20 from the dust suction port 210 and discharges it to the outside.

  Next, the dust exhaust device 4 will be described with reference to FIGS. 4 and 5. The dust removal device 4 includes a rotating fan 40 that rotates about a horizontal axis Px that is directed to the left and right. The dust removal device 4 is disposed in the vicinity of the left lateral end of the ceiling wall 21 of the feeder case 20. The rotary fan 40 is covered with a fan case 41 and driven by a motor M. The lower end portion of the rotation locus of the rotary fan 40 is located at the peripheral edge (or the vicinity thereof) of the dust suction port 210.

  The fan case 41 includes a suction side case 42 and a discharge side case 43. The suction side case 42 is arranged on the upstream side in the dust flow direction with respect to the rotary fan 40. The discharge side case 43 is disposed downstream of the rotating fan 40 in the dust flow direction. The suction side case 42 and the discharge side case 43 are detachably connected (can be disconnected) by bolts 44. The connection surface between the suction side case 42 and the discharge side case 43 is located on substantially the same plane as the side wall 22 of the feeder case 20 on the outer side in the body width direction.

  The lower end of the suction side case 42 is connected to the ceiling wall 21 by a bolt 45. A recessed portion 46 that is recessed into the rotating fan 40 side is formed in a portion of the suction side case 42 that faces the rotating fan 40.

  The recessed portion 46 is formed in a portion of the suction side case 42 that faces the rotating fan 40 in the direction of the horizontal axis Px. The recessed direction of the recessed portion 46 is the aircraft transverse direction.

  The motor M is disposed upstream of the rotating fan 40 in the direction of dust flow. That is, the motor M inputs power to the rotating fan 40 from the upstream side in the dust flow direction. The motor M is disposed between the dust suction port 210 and the rotary fan 40. The motor M is partitioned from a dust flow path through which dust flows. Specifically, the motor M is covered with a cover 47 in a section where the recessed portion 46 and the rotary fan 40 face each other. As apparent from FIG. 5, the motor M is supported in a state of penetrating the bottom of the recessed portion 46.

  A breaker B is attached to the rear side of the suction side case 42 via a bracket 48 fixed to the ceiling wall 21. The breaker B cuts off the power supply line when an overcurrent flows through the power supply line of the motor M.

  Near the breaker B, on the inner surface of the ceiling wall 21 is provided a culm detector 7 for detecting the chopped culm carried by the upper travel path portion of the transport chain 33. Normally, the harvested cereal meal is conveyed from the harvesting device side to the threshing device side by the lower travel path portion. However, for example, when the delivery at the carry-out unit is insufficient, the harvested cereal meal may return to the reaping device side through the upper travel path portion, and be sucked by the dust removing device 4 and entangled with the rotary fan 40. Arise. For this reason, when the harvested cereal meal returning is detected by the cereal meal detector 7, since this harvested grain meal may be sent to the rotation fan 40, it can be used as a stop trigger for the motor M. it can. Note that the culm detector 7 can be configured by using a limit switch or the like such that the lever is swung and switched on by the reaped culm.

  FIG. 6 shows functional blocks of the control unit 6 which is a core element of the control system of this ordinary combine. The control unit 6 is substantially constructed by a computer system, and each functional unit is realized by starting a program. However, the control unit 6 may be partially used by hardware or may be configured by hardware. The control unit 6 of this embodiment includes a work state detection unit 8, a device control unit 60, a motor control unit 61, a motor reverse rotation command unit 62, and a sequential reverse rotation management unit 63 as functional units particularly related to the present invention. The control unit 6 employs the control principle described with reference to FIG.

The work state detection unit 8 uses a switch or a sensor mounted on the ordinary combiner to generate a detection signal suitable for determining a specific work state that is highly likely to require reverse rotation of the rotary fan 40. The work state detection sensor group 80 including the state detection sensors such as is selected and received. As such a switch or sensor, a cutting clutch, a switch that detects the raised position of the cutting device 15, a wheat straw sensor that detects that the wheat straw has been sent to the threshing device 13, a threshing throughput A sensor that detects the state of the clutch, a clutch sensor that detects the state of the clutch that transmits power to the reaping device 15, a vehicle speed sensor, an engine speed sensor, and the like.
The work state detection unit 8 gives a specific work state signal to the motor reverse rotation command unit 62 when the specific work state is determined. Furthermore, a detection signal from the cereal detector 7 is input to the work state detector 8. In this embodiment, when the culm detector 7 detects a foreign matter such as a chopped culm, it gives a tangled danger signal to the motor control unit 61. Upon receiving the tangled danger signal, the motor control unit 61 outputs a stop signal for the motor M to the device control unit 60. Thereby, the apparatus control part 60 stops the motor M via motor driver MD.

  The sequential reverse management unit 63 has a time measuring function, and sends a sequential reverse timing signal indicating the timing to reverse the rotation fan 40 to the motor reverse rotation command unit 62 every time the forward drive of the rotation fan 40 elapses for a predetermined time. give.

  When the motor reverse rotation command unit 62 receives the specific work state signal from the work state detection unit 8, the motor reverse rotation command unit 62 gives a reverse rotation command to the motor control unit 61 to drive the rotation fan 40 in the reverse rotation direction. The motor control unit 61 outputs a reverse rotation signal for the motor M to the device control unit 60 in response to the reverse rotation command. Thereby, the device control unit 60 reverses the motor M via the motor driver MD. When the motor reverse rotation command unit 62 receives the sequential reverse rotation timing signal from the sequential reverse rotation management unit 63, the motor reverse rotation command unit 62 gives a reverse rotation command to the motor control unit 61. Thereby, the device control unit 60 reverses the motor M. In any case, the reverse drive of the motor M is continued for a preset time, and then returns to the normal drive.

  As shown in FIG. 6, a dust removal switch 70 that is a manual operation tool for driving the dust removal device 4 is also provided, and the motor M is forcibly driven forward by an operation command from the dust removal switch 70. Or it can be driven in reverse. Only the forward rotation drive of the motor M may be manually driven by the dust switch 70, and the reverse drive may be automatically performed by the function of the control unit 6 as described above.

[Another embodiment]
(1) In the above-described embodiment, the drive of the dust removal device 4 is controlled on the condition that it is in a specific work state. However, the drive of the dust removal device 4 is controlled regardless of such conditions. Also good. For example, a simple control program that controls the forward drive and the reverse drive of the rotary fan 40 using only a timer is possible.
(2) In the embodiment described above, the detection of the return chopped cereal by the cereal detector 7 is used as a stop trigger of the motor M. However, the detection of the return chopped cereal is used as a trigger for the reverse drive of the rotary fan 40. May be used.
(3) In the above-described embodiment, the dust suction port 210 of the dust removal device 4 is formed in the ceiling wall 21 that is the upper surface of the feeder case 20. It is not excluded that the dust suction port 210 is formed on the side surface or the bottom surface. Further, the dust removal device 4 itself may be disposed other than the ceiling wall 21 of the feeder case 20.
(4) In the embodiment described above, the rotary fan 40 is schematically illustrated as an axial flow fan, but another type of rotary fan 40 may be used.
(5) The functional units of the control system shown in FIG. 1 and FIG. 6 are divided for convenience of explanation, and a plurality of arbitrary functional units may be integrated. It may be divided.

  INDUSTRIAL APPLICABILITY The present invention can be used for a normal combine that includes a feeder that conveys the harvested cereal meal and a rotary fan that sucks dust out through the feeder case and discharges the dust to the outside.

13: Threshing device 15: Harvesting device 2: Feeder 20: Feeder case 21: Ceiling wall 3: Grain basket conveyor 4: Dust removal device 40: Rotating fan 41: Fan case 6: Control unit 60: Device control unit 61: Motor Control unit 62: Motor reverse rotation command unit 63: Sequential reverse rotation management unit 7: Grain basket detector 8: Work state detection unit 80: Work state detection sensor group B: Breaker M: Motor

Claims (6)

A normal combine with a reaping device and a threshing device,
A feeder that supplies the threshing device with the harvested cereal meal from the reaping device;
A dust exhaust device that has a rotating fan, is provided in a feeder case of the feeder, sucks dust around the cutting device through the feeder case, and discharges the dust to the outside;
A motor for driving the rotary fan forward and backward, and
A motor control unit for controlling the motor;
A motor reverse rotation command unit that outputs a reverse rotation command that commands the motor control unit to perform reverse rotation driving of the motor;
Equipped with a,
The feeder is equipped with a cereal transport conveyor in the feeder case, and a cereal sensor is provided on the inner surface of the ceiling wall of the feeder case and above the cereal transport conveyor. And the motor control unit stops the motor based on the detection of the culm by the culm sensor .   2. The ordinary combine according to claim 1, further comprising a sequential reverse management unit that provides sequential reverse timing to the motor reverse command unit, and the motor reverse command unit outputs the reverse command based on the sequential reverse timing.   A work state detection unit that detects a specific work state of the ordinary combine and outputs a specific work state detection signal is provided, and the motor reverse rotation command unit outputs the reverse rotation command based on the specific work state detection signal The ordinary combine according to claim 1 or 2.   4. The normal type according to claim 3, wherein the work state detection unit detects, as one of the specific work states, that the harvested culm does not flow in the feeder case based on a signal from a state detection sensor. Combine.   5. The ordinary combine according to claim 1, wherein the reverse rotation driving of the motor by the reverse rotation command is executed for a predetermined time that can be set in advance. The ordinary combine according to any one of claims 1 to 5 , wherein the motor is provided with a breaker that detects excess current and cuts off power supply.

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