JP2011092062A - Grain unloader of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid defects in which grains are dropped while a shutter is not closed as it is and to increase general versatility in automating opening and closing operation of shutter and improving operability. <P>SOLUTION: The grain unloader of combine harvester has a constitution that a drive stop command is outputted to a conveying screw while maintaining an opening position of the shutter by a shutter drive device with input of an operation signal to command a drive stop by an unloading command means for turning on or off the drive of a conveying screw of grain conveying part, and an operation command to a shutter closing position side is outputted to the shutter drive device on the basis of a detection result that a conveying cylinder is reached to a standard storage position by a rotation position detection means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides a grain of a combine provided with a grain conveying part having a conveying screw inside a conveying cylinder and provided with a shutter capable of opening and closing a discharge port provided on the conveying terminal side of the grain conveying part. The present invention relates to a grain carry-out device.

  In such a combine grain carrying-out device provided with a shutter capable of opening and closing the discharge port of the grain conveying unit, the shutter is opened and closed by a driving force of an electric motor. ] And [2] are known.

[1] A flat shutter is provided in the vicinity of the discharge port of the grain conveying unit having a conveying screw inside the conveying cylinder, and the shutter is opened and closed by the driving force of the electric motor. In the combine grain unloading device, a sensor is provided to detect the upper limit position of the grain transport section with the discharge port, and the operation of the overhang switch that automatically moves the grain transport section in the storage position to the discharge position Accordingly, when the grain transport unit reaches the upper limit position, the shutter is opened, and conversely, the grain transport unit is moved to the upper limit position in accordance with the operation of the storage switch that automatically moves the grain transport unit at the discharge position to the storage position. When it reaches, the shutter is closed (see Patent Document 1).

[2] A flat shutter is provided in the vicinity of the discharge port of the grain conveying portion having a conveying screw inside the conveying cylinder, and the shutter is rotated in the forward and reverse directions by the driving force of the electric motor. Thus, the shutter can be rotated in the forward and reverse directions to switch between a state in which the grain is discharged from the discharge port and a state in which the discharge of the grain from the discharge port is restricted. Based on the operation of the discharge clutch lever that turns the clutch on and off, the shutter is opened and closed and the shutter is closed when the grain is discharged and the shutter is closed when the discharge is stopped. (See Patent Document 2).

JP-A-10-4771 (paragraphs [0010], [0011], [0012], FIG. 1, FIG. 2, FIG. 4) JP 2003-111511 (paragraphs [0008], [0011], FIG. 2, FIG. 5)

  As described in [1] above, in the structure in which the opening / closing operation of the shutter at the discharge port is performed depending on whether or not the grain conveying unit reaches the upper limit position, the opening / closing operation of the shutter does not reach the upper limit position. At an arbitrary position, it cannot be linked to the position movement of the grain conveying unit, and a means for enabling an opening / closing operation separately is required.

As in the above [2], based on the operation of the discharge clutch lever for turning on and off the grain discharge clutch, the shutter is opened during the grain discharge operation, and the shutter is closed during the discharge stop operation. With a structure in which the opening / closing operation of the shutter by the driving force of the electric motor is linked to the operation of the discharge clutch lever, the shutter opening / closing operation can be performed at the same time simply by operating the clutch with the discharge clutch lever. There is.
However, with this structure, the shutter may not be closed as expected due to a trouble or some trouble on the side of the electric motor that performs the opening / closing operation of the shutter, and there is a possibility that problems such as spilling of grains may occur.

  An object of the present invention is to provide a combine grain carry-out device that can avoid the problem of spilling while the shutter is not closed when automating the opening / closing operation of the shutter and improving the versatility. There is.

The technical means of the present invention taken in order to achieve the above object has the following structural features and operational effects.
[Solution 1]
The present invention includes a grain transport unit with a transport screw inside a transport cylinder, and a horizontal axis in a direction crossing the discharge port at a discharge end provided on the transport terminal side of the grain transport unit. A combine grain carry-out device provided with a shutter that swings around a center and can open and close the discharge port,
The shutter drive device that opens and closes the shutter with the driving force of the opening / closing electric motor, the unloading command means for turning on and off the drive of the transfer screw of the grain transfer unit, and the transfer cylinder of the grain transfer unit up and down A turning drive device that turns around an axis, a turning operation tool that artificially outputs a turning operation command to the turning drive device, and the transfer cylinder are preset around the vertical axis. A turning position detecting means for detecting whether or not the reference storage position has been reached, and a control device for controlling the operation of the shutter driving device and the conveying screw,
In the control device, in response to an input of an operation signal for instructing to stop driving by the carry-out command means, a driving stop command to the conveying screw is maintained while maintaining the shutter open posture by the shutter driving device. And the operation command to the shutter closing posture side is output to the shutter driving device based on the detection result that the conveying cylinder has reached the reference storage position by the turning position detecting means. It is comprised by these.

[Operation and effect of invention according to Solution 1]
According to the configuration of the present invention shown in the above solution 1, the operation command to the shutter closing posture side of the shutter driving device is performed based on the detection result that the conveyance cylinder has reached the reference storage position. There is no need for a dedicated operation means for performing the shutter closing operation at an appropriate timing, or the shutter closing operation itself for the appropriate timing.
In addition, the shutter is closed based on the detection result that the transport cylinder has reached the reference storage position. At this reference storage position, the operation of the transport screw is stopped, so the shutter is closed. In this case, the grain to be transported can be prevented from being damaged, and grain spillage can be avoided by closing the shutter.
In a range that is out of the reference storage position in the turning direction, the shutter of the discharge port is maintained in an open posture, and in this state, driving and drive stop commands can be output to the conveying screw. it can. Therefore, for example, when bagging the grain at the midway position where the drive of the conveying screw that has carried the grain to a transporting vehicle or the like at a predetermined discharge position is stopped and moved to the reference storage position, Drive the screw again at the position to supply the grain into the bag, stop the drive screw again and return it to the standard storage position, etc. Can be done.

As a result, the turning position detecting means for detecting the position in the turning direction of the transport cylinder can be used as closing operation means for appropriately setting the shutter closing timing by the shutter driving device, The dedicated operation means for performing the closing operation of the shutter and the operation itself are not necessary, which is effective in simplifying the apparatus and improving the operability.
Further, when the shutter is closed at the reference storage position, the driving of the conveying screw is also stopped, so that there is an advantage that it is possible to avoid problems such as crushed grains and spilling many grains.
Further, the grain can be carried out at any position other than the reference storage position, and there is also an advantage that the versatility of the combine grain carrying out apparatus can be improved by making it easy to use for bagging work.

[Solution 2]
According to another technical means of the present invention taken to solve the above-mentioned problem, as described in claim 2, the grain conveying part is a vertical feed conveying part that rotates around a vertical axis and a horizontal axis. And a horizontal feeding conveyance unit that undulates and swings around. When it is detected that the horizontal feeding conveyance unit has reached the reference storage position, the shutter is moved over the entire range of the undulation oscillation range at the reference storage position. That is, an operation command to the shutter closing posture side with respect to the driving device is output.

[Operation and effect of invention according to Solution 2]
In the combine grain carry-out device of the present invention according to the above solution 2, when it is detected that the transverse feed conveyance unit has reached the reference storage position as described above, the undulation swing range at the reference storage position is as follows. The operation command to the shutter closing posture side with respect to the shutter driving device is output in the entire range. That is, the operation command to the shutter closing posture side of the shutter driving device is output in relation to the reference storage position in the turning direction, regardless of the undulation height position in the up-down direction of the lateral feed conveyance unit. is there.

  Therefore, there is no inconvenience that the closing operation of the shutter cannot be performed unless the laterally transporting portion that has reached the reference conveying position in the turning direction is moved to a predetermined height position such as the upper limit position thereafter. It has excellent properties.

Combine side view Overall plan view of combine Plan view showing telescopic drive mechanism Longitudinal section around the discharge port of the grain unloader Longitudinal section around the discharge port of the grain unloader Sectional view taken along line VI-VI in FIGS. 4 and 5 VII-VII cross-sectional view in FIGS. 4 and 5 Rear view showing shutter drive Block diagram showing the controller Flowchart showing a main routine in the control device Flow chart showing a routine for grain carry-out control Chart explaining grain export control mode

  Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.

[Overall structure of the combine]
First, the overall structure of a combine to which the present invention is applied will be described.
FIG. 1 shows the entire side of the self-decomposing combine. This combine is equipped with a pair of left and right crawler type traveling devices 10 at the lower part of the body frame 1, and a cutting pretreatment device 11 connected to the front and left front portions of the body frame 1 so as to be movable up and down is provided.
The cereals harvested by the pre-harvest processing device 11 are threshed by a threshing device 12 provided at the left rear part of the machine body frame 1, and the threshed grains are collected in the grain tank 13 and discharged after the threshing processing. The straw is configured to be delivered to the rear waste straw processing apparatus 14.

An engine 15 serving as a power source for the crawler travel device 10 and various work devices is disposed at the right front portion of the machine body frame 1. A driver's seat 16 is disposed in a state of being positioned above the engine 15, and a boarding operation unit 18 including a control tower 17 is disposed on the front side and the left side of the driver seat 16.
The grain tank 13 is provided with a grain sending screw 13a for sending out the grains stored in the grain tank 13 to the outside of the tank, and is sent out from the grain sending screw 13a. It is configured such that the grain is taken over by the grain unloading device 2 described later and discharged to the outside of the machine.

[Configuration of grain unloading device]
The grain unloading device 2 is connected to the longitudinal feed transport unit 3 that receives the grain supplied from the grain tank 13 side and transports it to the upper side, and the terminal side of the vertical feed transport unit 3, and is transported vertically. Transverse feed part 4 (corresponds to a grain transport part) that feeds the grain supplied from the unit 3 (corresponds to a grain transport part) and discharges it to the outside from the discharge port 45 at the end. It consists of and. 1 and 2, the vertical feed conveyance unit 3 of the grain carry-out device 2 is in the “reference storage position” within the turning operation range, and the horizontal feed conveyance unit 4 is placed on a cradle 19 on the machine body. Storage status.
The above-mentioned “reference storage position” is a range corresponding to the position directly above the cradle 19 in the turning direction of the lateral feed transport unit 4, and is placed on the cradle 19 when the lateral feed transport unit 4 is operated up and down. It includes the range stored in the state and the range from the position to the upper limit in the direction of rising upward.

  The vertical feed conveyance unit 3 includes a vertical feed cylinder 30 (corresponding to a conveyance cylinder) having a passage for lifting and conveying the grains therein, and grains equipped in the vertical feed cylinder 30. A transverse feed cylinder 31 (corresponding to a delivery screw) for conveying the grain, and the transverse feed part 4 has a passage for passing the grain in the transverse direction. 40 (corresponding to a conveying cylinder) and a transverse conveying screw 41 (corresponding to a conveying screw) for conveying a grain equipped in the laterally conveying cylinder 40.

The vertical feed cylinder 30 and the horizontal feed cylinder 40 are provided with a connecting cylinder portion 32 bent laterally at the upper end portion of the vertical feed cylinder 30 and also horizontally on the base end side of the horizontal feed cylinder 40. A bent connecting tube portion 42 is provided, and the opposite end portions of the horizontally connecting tube portions 32, 42 are fitted together so as to be relatively rotatable.
A known transmission mechanism (not shown) for transmitting the rotational power of the longitudinal feed screw 31 to the lateral feed screw 41 is provided inside the connecting cylinder portions 32 and 42, and the longitudinal feed cylinder 30. The inner grains are fed into the transverse feed tube 40 and the screws 31 and 41 are interlocked.

  The horizontal feed cylinder 40 connected to the upper end side of the vertical feed cylinder 30 extends between the upper end side of the vertical feed cylinder 30 and a support body 43 attached integrally to the lateral side portion of the horizontal feed cylinder 40. The provided hydraulic cylinder 44 (an example of an actuator for swinging operation) is configured to swing up and down around the horizontal axis x in the horizontal direction on the upper end side of the vertical feed cylinder 30.

An annular driven gear 33 is integrally formed on the outer periphery of the vertical feed cylinder 30, and is driven by meshing with a drive gear 20a on the electric motor 20 for turning supported at a fixed position on the machine body frame 1 side. Thus, the vertical feed cylinder 30 and the horizontal feed cylinder 40 provided on the upper end side of the vertical feed cylinder 30 are swung around the vertical axis y which is the center of rotation of the vertical feed screw 31 in the vertical feed cylinder 30. It is configured to be operable.
The turning operation position of the vertical feed cylinder 30 around the longitudinal axis y is configured to be detected by a turning potentiometer 34 (an example of a turning position detecting means) that detects the rotation angle of the driven gear 33. is there.

The power of the engine 15 is transmitted to the grain carry-out device 2 via a grain delivery screw 13 a provided at the bottom of the grain tank 13.
That is, the driving force is transmitted from the downstream end of the grain sending screw 13a in the grain conveying direction to the longitudinal feed screw 31 through an appropriate transmission mechanism such as a bevel gear, and the driving force is longitudinally fed. It is transmitted from the upper end portion on the conveyance end side of the screw 31 to the transverse feed screw 41 so that the grains in the grain tank 13 are discharged from the discharge port 45 on the conveyance end side of the transverse feed conveyance portion 4. It is.

As shown in FIG. 1 and FIG. 2, the transverse feed conveyance unit 4 is located on the downstream side in the grain conveyance direction and the start end side conveyance unit 4 </ b> A located on the upstream side in the grain conveyance direction. It is comprised by the termination | terminus conveyance part 4B.
In other words, the lateral feed cylinder 40 is connected to the vertical feed cylinder 30 side, and the end-side transport cylinder 40a is configured to be externally fitted to the start-end transport cylinder 40a so as to be relatively movable in the cylinder axis direction. 40b, and the lateral feed screw 41 is also connected to the start end side screw 41a whose start end side is connected to the longitudinal feed conveyance unit 3 side and the end side screw 41b connected to the discharge port case 45A including the discharge port 45 on the end side. It consists of and.
Then, the start end side transport section 4A is configured by the combination of the start end side transport cylinder 40a and the start end side screw 41a, and the end side transport section 4B is configured by the combination of the end end side transport cylinder 40b and the end side screw 41b. Has been.

An expansion / contraction drive mechanism 21 is provided between the start-end side transfer cylinder 40a and the end-side transfer cylinder 40b to connect the start-end side transfer cylinder 40a and the end-side transfer cylinder 40b so as to be slidable relative to each other.
As shown in FIG. 3, the telescopic drive mechanism 21 fixes a guide rail 22 to the start end side of the start end side transfer cylinder 40 a, and a power source near the start end side of the start end side transfer cylinder 40 a of the guide rail 22. The telescopic electric motor 23 is provided.
A drive sprocket 23a attached to the output shaft side of the telescopic electric motor 23 and a driven sprocket 23b attached to the other end side of the guide rail 22 are connected by a transmission chain 24, and the end side conveyance is performed. A piece member 25 attached to the start end side of the cylinder 40b is attached to one side of the transmission chain 24.

  With this configuration, when the transmission chain 24 is reciprocated by the forward / reverse drive of the telescopic electric motor 23, the transmission chain 24 is fixed to the chain portion on one side of the reciprocation stroke, and the other chain portion In contrast, the relatively moving piece member 25 reciprocates between the drive sprocket 23a and the driven sprocket 23b. As a result, the terminal-side transport cylinder 40b to which the piece member 25 is attached is configured to move relative to the start-end-side transport cylinder 40a, so that the lateral feed transport section 4 is expanded and contracted.

At this time, the terminal-side screw 41b whose end side is supported on the end-of-conveying side of the terminal-side transport cylinder 40b moves following the expansion / contraction movement of the terminal-side transport cylinder 40b. It moves relative to the start end side screw 41a.
Although the structure for this relative movement is not shown in the figure, the start side screw 41a and the end side screw 41b are provided at the same pitch and slightly shifted in the axial direction position, and when contracted, the end side screw 41a The screw 41b is configured by a well-known structure in which the screw 41b enters while rotating between the screw pitches of the start end side screw 41a.

A shutter 46 for opening and closing the discharge port 45 is provided in a discharge port case 45A constituting the discharge port 45 provided on the transfer terminal side of the terminal-side transfer cylinder 40b, and the shutter 46 is pivotally supported. The shutter drive device 5 for rotating the discharge port 45 by opening and closing the discharge port 45 by rotating around the horizontal axis p1 of the support shaft 46a, the full detector 47, and the lighting device 48 for illuminating the periphery of the discharge port 45 are provided. .
The support shaft 46a that pivotally supports the shutter 46 is fitted into the support tube portion 46b on the base end side of the shutter 46, and is inserted in a state of penetrating between the left and right side walls of the discharge port case 45A. The side is fixed with a β pin (not shown), and the support shaft 46a can be extracted from the discharge port case 45A by removing the β pin.
Thus, if the support shaft 46a is extracted from the discharge port case 45A, the entire plate-shaped shutter 46 can be extracted from the discharge port 45 side. In this state, the discharge port 45 is always open.

The full detector 47 is integrally attached to the lower portion of the mounting plate 7 so as to protrude downward from the lower end edge of the discharge port case 45A. The full detector 47 is configured such that when the grains are directly fed into the straw bag with the discharge port 45 inserted into the top of the straw bag (not shown), This is for detecting that the upper edge is near full.
Although not shown, when this full detector 47 detects fullness, it is possible to employ a linkage structure with an appropriate mechanism, such as operating some notification means or stopping the grain export.
Incidentally, reference numeral 49 shown in the figure is a splash prevention cover that hangs downward from the periphery of the discharge port case 45A, and is made of a transparent soft synthetic resin material that can be bent and deformed.

[Shutter drive device]
The shutter driving device 5 is configured as follows.
As shown in FIGS. 4 to 8, the shutter driving device 5 transmits the opening / closing electric motor 50 as a power source and the driving force of the opening / closing electric motor 50 to the shutter 46 to open / close the shutter 46. The operation mechanism 6 includes an opening / closing electric motor 50 and an attachment plate 7 for mounting the operation mechanism 6 on the discharge port case 45A.

As shown in FIG. 8, the operation mechanism 6 is configured to transmit the rotational cam 60 driven by the output from the opening / closing electric motor 50 and the rotational power of the opening / closing electric motor 50 to the rotating cam 60. And a movement direction conversion mechanism 6A that converts the transmission direction of power.
That is, the output shaft 51 of the electric motor 50 for opening and closing is arranged in parallel with the mounting plate 7 so that the axis line p2 thereof is along the plate surface of the mounting plate 7, and the rotation of the rotary cam 60 The shaft 61 is disposed so as to be orthogonal so that its axis p3 intersects the plate surface of the mounting plate 7. The movement direction conversion mechanism 6A includes a worm 51a formed on the peripheral surface of the output shaft 51, and a worm wheel 62 formed integrally with the rotation shaft 61 of the rotary cam 60 so as to mesh with the worm 51a. It is configured.

  Therefore, when the opening / closing electric motor 50 is rotationally driven in one direction, the rotational power is transmitted to the worm wheel 62 via the worm 51a of the output shaft 51, and the rotary cam 60 that rotates integrally with the worm wheel 62 is driven. The shutter 46 that contacts the periphery of the rotating cam 60 is operated to the closing side or the opening side. As shown in FIGS. 4 and 5, the shutter 46 is formed in a shape that is bent into a “h” shape in a side view. The shutter 46 is provided so that the cam surface 60a of the rotating cam 60 is in sliding contact with a portion between the bent portion of the “he” and the horizontal axis p1. That is, in the open position of the shutter 46 shown in FIG. 4, the lower side of the shutter 46 than the bent portion is positioned substantially parallel to the plate surface of the mounting plate 7, and the horizontal axis p1 is higher than the bent portion. The back surface of the shutter 46 on the side close to the position of the rotary cam 60 intersects with the rotational surface of the rotary cam 60 and has a function as a cam follower.

The interlocking relationship between the opening / closing operation of the shutter 46 and the operation mechanism 6 is as described in FIGS.
That is, the state shown in FIG. 4 is a state in which the shutter 46 is fully opened. In this state, as shown in FIGS. 6 (a) and 7 (a), the rotating cam 60 has a cam periphery at the maximum radius portion. Located in the middle and lower part, it is separated from the rear surface of the shutter 46 (the surface that is the lower side in the discharge port closing posture).

  From the state shown in FIG. 4, FIG. 6A and FIG. 7A, the rotating cam 60 is rotated clockwise in FIG. 6 (counterclockwise in FIG. 7), and FIG. ) And FIG. 7B, when the cam periphery of the maximum radius portion of the rotary cam 60 is operated to be positioned in the upper part in the figure, the rotary cam that contacts the back side of the shutter 46 as shown in FIG. 60 is operated to push the shutter 46 up and close the discharge port 45.

  Thereafter, in order to return the shutter 46 to the open position again, when the opening / closing electric motor 50 is further rotated in the same direction, the state in which the maximum radius portion of the rotating cam 60 is located at the upper side in the drawing passes again. As shown in FIG. 6A and FIG. 7A, the posture is changed so that the cam periphery of the maximum radius portion of the rotating cam 60 is positioned below in the drawing. Along with this, the shutter 46 rotates by its own weight around the horizontal axis p1, and returns to the discharge port opening posture shown in FIG.

The posture change state of the rotary cam 60 is detected by an angle detector 52 (an example of an open / close detection means) that detects a rotation angle of the rotary cam 60 around the axis line p3 of the rotary shaft 61. It is.
The angle detector 52 includes a contact detection operation provided with a detection portion 53a that comes into contact with the cam surface 60a at a location different from the location in contact with the shutter 46 on the cam surface 60a of the rotating cam 60. It comprises a body 53 and a cam position detecting potentiometer 54 that supports the contact detection operation body 53 so as to be swingable around the axis p4 of the operation shaft 54a.

With this configuration, the maximum radius portion of the rotary cam 60 in a state where the detection unit 53a of the contact detection operation body 53 is positioned downward in the drawing as shown in FIGS. 6 (a) and 7 (a). Alternatively, when the cam surface 60a in a position close to that is in contact with the cam surface 60a, it is detected that the rotating cam 60 is in the open posture angle position where the shutter 46 is opened.
Then, as shown in FIG. 6B and FIG. 7B, the detection unit 53a of the contact detection operating body 53 is located at the minimum radius portion of the rotary cam 60 located at the lower side in the drawing or at a location close thereto. If it is in contact with the cam surface 60 a, it is detected that the rotating cam 60 is in the closing posture angle position that closes the shutter 46.

〔Control device〕
The control device 100 that controls the opening / closing operation of the shutter 46 by the shutter drive device 5 and the turning, undulation, expansion and contraction of the grain carrying-out device 2 is performed by the discharge clutch switch 27 and the unloader operation tool 28 provided in the boarding operation unit 18. The following configuration is made in connection with the operation of (an example of the turning operation tool).

As shown in FIG. 1 and FIG. 2, in the boarding operation unit 18, on the rear side of the driver seat 16, on the grain delivery screw 13 a disposed on the bottom side of the grain tank 13, and on the lower transmission side thereof. A discharge clutch switch 27 is provided as a carry-out command means for turning on and off the drive of the transverse feed screw 41 which is a conveying screw of the grain carrying-out device 2 located.
Further, the unloader operation tool 28 for performing the turning operation of the grain carrying-out device 2 and the up-and-down undulating operation, and the lateral feed conveyance unit 4 of the grain carrying-out device 2 are extended and retracted at the rear side portion of the driver seat 16. An expansion / contraction operation button 29 for actuating is also provided.

  As shown in FIGS. 2 and 9, the discharge clutch switch 27 includes a discharge start switch 27a for driving the grain delivery screw 13a and the transverse feed screw 41 to start grain discharge, and a grain delivery. And a discharge stop switch 27b for stopping the discharge of the grain by stopping driving of the screw 13a and the transverse feed screw 41, and an operation signal of each switch 27a, 27b is input to the control device 100. It is constituted as follows.

In the control device 100, based on the operation signal input from the discharge clutch switch 27, the grain discharge clutch 26 provided on the transmission upper side of the grain delivery screw 13 a in the power transmission system from the engine 15. Is configured to output a control signal to the clutch motor 26a.
In other words, the grain discharging clutch 26 includes a belt transmission mechanism (not shown) for transmitting power from the engine side and a tension ring (not shown) spring-biased on the belt tension side, and tension on the belt. It is constituted by a well-known structure in which the belt tension force is switched by changing the degree of pressure contact of the ring body to perform the clutch on / off operation.

  The clutch motor 26a is used to change the pressure contact degree of the tension ring body in the grain discharge clutch 26. In this clutch motor 26a, a state in which the clutch is disengaged by pulling the tension ring body to the side that loosens the belt against the spring biasing force to the side that presses the tension ring body is released, and the pulling operation is released to release the clutch. It is configured to be switchable so that the tension ring body can be moved to the tension side of the belt by a spring biasing force and the clutch is engaged.

The unloader operating tool 28 is configured to be swingable in a cross direction, and is controlled by detecting whether the unloader operating tool 28 has been operated to the right, left, up or down by the unloader switch 28a. It is configured to input to the device 100.
Whether the expansion / contraction operation by the expansion / contraction operation button 29 is an operation to the expansion side or an operation to the contraction side is detected by the expansion / contraction switch 29a, and the detection result is input to the control device 100.
A detection signal from a turning potentiometer 34 that detects the position in the turning direction in which the longitudinal feed conveyance unit 3 in the grain unloading device 2 is operated is also input to the control device 100.
A detection signal of the operation position of the rotary cam 60 detected by the cam position detection potentiometer 54 in the shutter drive device 5 is also input to the control device 100.

As shown in FIG. 10, the control device 100 constituted by a microcomputer includes a turning control means 101 for controlling the operation of the turning electric motor 20 for turning the longitudinal feed conveyance unit 3 in the main routine. The hoisting control means 102 for controlling the operation of the electromagnetic valve 44a of the hydraulic cylinder 44 for raising and lowering the transverse feed conveyance unit 4 and the electric motor for extension and contraction of the extension drive mechanism 21 for extending and retracting the horizontal feed conveyance unit 4 Each subroutine of the expansion / contraction control means 103 that controls the operation of the shutter 23 and the grain carry-out control means 104 that controls the operation of the opening / closing electric motor 50 for performing the opening / closing operation of the shutter 46 of the discharge port 45 are incorporated as programs. It is.
This main routine ends upon detection of a work end signal such as a key switch (not shown) turning operation.

  When the unloader operation tool 28 is operated to the “right turn” or “left turn” side, the turning control unit 101 is configured to move the unloader operation tool with respect to the turning electric motor 20 only during the operation. A turn operation command in the direction in which 28 is operated is output. Then, the turning potentiometer 34 detects the turning position of the vertical feed conveyance unit 3 that is turned by the turning electric motor 20, and the detection result is fed back to the turning control means 101, and the current position of the vertical feed conveyance unit 3 is detected. It is stored as a turning position.

  The undulation control means 102 inputs that the unloader operating tool 28 has been operated in the “upward” or “downward” direction, which is a direction different from the “right turn” or “left turn”. Upon receipt of the signal, the hydraulic cylinder 44 for hoisting operation is configured to output an operation command to the electromagnetic valve 44a for hoisting operation so that the hoisting operation is performed on the conveyance end side of the laterally feeding transport unit 4. . As a result, the electromagnetic valve 44a is operated so that the hydraulic cylinder 44 expands and contracts based on the “upward” or “downward” operation by the unloader operation tool 28, and the conveyance end side of the lateral feed conveyance unit 4 is moved. Are configured to move up and down in the direction in which the unloader operating tool 28 is operated.

  The expansion / contraction control means 103 detects whether the expansion / contraction operation button 29 has been operated by operating the expansion / contraction electric motor 23 of the expansion / contraction drive mechanism 21 to the side for extending or contracting the lateral feed conveyance unit 4. Based on a detection signal from the expansion / contraction switch 29a, the operation of the expansion / contraction electric motor 23 is controlled. According to this control, when the expansion / contraction operation button 29 is operated to the extension side of the lateral feed conveyance unit 4, the expansion / contraction electric motor 23 is driven to the extension side only during the operation, and the expansion / contraction operation button 29 is moved horizontally. When operated to the contraction side of the feed conveyance unit 4, the electric motor 23 for expansion / contraction is driven to the contraction side only during the operation, and when the lateral feed conveyance unit 4 is operated to the expansion / contraction operation limit, the expansion / contraction operation is stopped. To do.

The grain carry-out control means 104 is detected by the operation signal of the discharge clutch switch 27, the signal of the detection position of the longitudinal feed unit 3 by the turning potentiometer 34, and the cam position detection potentiometer 54 of the shutter driving device 5. Based on the detection signal of the operation position of the rotating cam 60, a control signal is output to the open / close electric motor 50 for opening / closing the shutter 46 and the grain discharging clutch 26.
The opening / closing operation of the shutter 46 and the control operation of the grain discharging clutch 26 by the grain carrying-out control means 104 are as follows.

(Grain export control)
In each subroutine, the grain carry-out control for performing the opening / closing operation of the shutter 46 and the control action of the grain discharge clutch 26 by the grain carry-out control means 104 is executed as shown in FIG.

That is, when the discharge start switch 27 a or the discharge stop switch 27 b of the discharge clutch switch 27 is operated, the detection signal is input to the grain carry-out control means 104.
In the grain carry-out control means 104, the input signal is a discharge start command (a command to enter the clutch for the grain discharge clutch 26) by operating the discharge start switch 27a, or a discharge stop command ( It is determined whether or not it is a clutch disengagement command for the grain discharge clutch 26 (step # 1).

If the input signal is a discharge start command by operating the discharge start switch 27a, it is next determined whether or not the emergency mode switch 35 is OFF (step # 2).
The emergency mode switch 35 detects the detection from the angle detector 52 when the detection signal from the angle detector 52 for detecting the opening posture of the shutter 46 is not input to the control device 100 due to some trouble. This is for switching the control mode so that the signal does not become the determination condition of the clutch on / off command for the grain discharge clutch 26. If the emergency mode switch 35 is ON, the discharge start switch 27a Immediately after the operation, a signal for instructing the clutch motor 26a to enter and operate the grain discharging clutch 26 is output (step # 2, step # 6), and this subroutine is terminated and the process returns to the upper routine.

If the emergency mode switch 35 is OFF, the detection position in the turning direction of the vertical feed conveyance unit 3 is stored in advance in the memory of the control device 100 based on the detection signal of the turning potentiometer 34. It is detected whether the position corresponds to the “reference storage position” (step # 3).
If the detection position in the turning direction of the vertical feed conveyance unit 3 is outside the range of the reference storage position, the shutter 46 is driven to the shutter opening side with respect to the opening / closing electric motor 50 of the shutter driving device 5. A drive signal is output (step # 3, step # 4).
If the detection position in the turning direction of the vertical feed conveyance unit 3 is within the range of the reference storage position, the shutter 46 is driven to the shutter closing side with respect to the opening / closing electric motor 50 of the shutter driving device 5. A drive signal is output (step # 3, step # 9).

  When the shutter 46 is driven to the shutter open side by the opening / closing electric motor 50 of the shutter driving device 5 and the angle detector 52 detects that the shutter 46 has been opened, the grain discharge clutch 26 is connected to the clutch motor 26a. A signal instructing to enter and operate is output (step # 5, step # 6), this subroutine is terminated, and the process returns to the upper routine.

  When it is determined in step # 1 that the discharge stop command is issued by the discharge stop switch 27b (clutch disconnection command for the grain discharge clutch 26), the clutch discharge motor 26a is operated to disconnect the grain discharge clutch 26. A signal for instructing to output is output (step # 7).

  After that, based on the detection signal of the turning potentiometer 34, whether or not the detection position in the turning direction of the vertical feed conveyance unit 3 is a position corresponding to the “reference storage position” stored in advance in the memory of the control device 100. (Step # 8), and if it is within the range of the reference storage position, a drive signal is output to the opening / closing electric motor 50 of the shutter driving device 5 so that the shutter 46 is driven to the shutter closing side. The process returns to the upper routine (step # 9). If the detected position in the turning direction is outside the range of the reference storage position, the subroutine is terminated and the process returns to the upper routine.

Grain carry-out control is performed in the control form as described above. That is, as shown in FIG. 12, if the detection position in the turning direction of the vertical feed conveyance unit 3 is outside the range of the reference storage position, immediately after the discharge start switch 27 a of the discharge clutch switch 27 is operated, Since the opening state of the shutter 46 by the angle detector 52 is not detected, an operation command to the opening side is issued to the opening / closing electric motor 50 of the shutter driving device 5 that drives the shutter 46, but for the grain discharge The clutch 26 remains disengaged.
When the angle detector 52 detects that the shutter 46 is opened, the grain discharge clutch 26 is engaged at that time, and the grain discharge is started.
If the discharge stop switch 27b of the discharge clutch switch 27 is operated outside the range of the reference storage position, no operation command is output to the open / close electric motor 50 of the shutter drive device 5, and the shutter 46 is Without changing the posture (with the shutter 46 open), the grain discharging clutch 26 is turned off. Next, when the discharge start switch 27a of the discharge clutch switch 27 is operated in this state, the grain discharge clutch 26 is engaged.

  If the detection position in the turning direction of the vertical feed conveyance unit 3 is within the range of the reference storage position, the discharge start switch 27a of the discharge clutch switch 27 is operated or the discharge stop switch 27b is operated. Regardless of the state, the grain discharging clutch 26 is turned off, and a command is output to the opening / closing electric motor 50 of the shutter driving device 5 to close the shutter 46.

[Others]
As described above, the opening / closing operation of the shutter 46 is linked to the clutch engagement operation of the discharge clutch switch 27 on the “open side”, and linked to the detection signal of the reference storage position of the vertical feed conveyance unit 3 on the “close side”. The reason is as follows.
That is, it is necessary to open the shutter 46 when the grain is discharged, and when the vertical feed transport unit 3 is swung, the horizontal feed transport unit 4 swivels in an upward posture with the discharge port 45 side raised. Therefore, in this state, there is little possibility that the grain will spill out from the discharge port 45, and it is relatively common to take a work form in which the grain discharge is started again at another location during the turning.
Then, when the vertical feed conveyance unit 3 reaches the reference storage position and attempts to store the horizontal feed conveyance unit 4 on the receiving table 19, the discharge port 45 on the end side of the horizontal feed conveyance unit 4 gradually descends. Since there is a high possibility that the grains in the lateral feed transport unit 4 will spill out, a control signal is output to the opening / closing electric motor 50 so that the shutter 46 is closed when the reference storage position is detected. Is done.

  Although not shown, the emergency mode switch 35 is disposed on the inner side of the hood on the rear side of the driver's seat 16 so that it can be prevented from coming into contact with other objects and is not inadvertently operated. Is installed.

[Other Embodiment 1]
The opening / closing detection means of the shutter drive device 5 is not limited to the rotation cam 60 or the angle detector 52 that detects the operation position of the rotation cam 60 as described in the above-described embodiment. The shaft is rotated by an electric motor and the rotation angle of the shaft integrated with the shutter 46 is directly detected by a potentiometer, or the open / close position of the rotary cam 60 or the shutter 46 itself is detected by a limit switch. Various structures can be employed.

[Second embodiment]
As shown in the above-described embodiment, the shutter driving device 5 mounted on the mounting plate 7 is not limited to the one disposed on the upper side in the grain conveying direction than the opening portion of the discharge port 45, for example, Conversely, on the lower side in the grain conveyance direction than the opening location of the discharge port 45 (the front side of the machine body away from the vertical axis y that is the center of rotation of the longitudinal feed screw 31 than the location where the discharge port 45 exists). It may be arranged, or may be on the lateral side of the opening of the discharge port 45. In this case, the mounting position of the shutter 46 and the swinging direction of the shutter 46 also need to be changed according to the mounting location so that the opening / closing operation by the rotating cam 60 of the shutter driving device 5 is effective.
That is, if it is arranged on the lower side in the grain conveyance direction than the opening portion for discharging the koji at the discharge port 45, the horizontal axis p1 serving as the swing center of the shutter 46 is shown in FIGS. The outlet case 45A on the opposite lower side (the side on which the luminaire 48 is provided in FIGS. 4 and 5) rather than on the upper side in the grain conveying direction than the opening location of the outlet 45 as shown. It must be provided on the peripheral wall.
Further, when the shutter 46 is attached to the lateral side of the opening of the discharge port 45, the horizontal axis p1 serving as the center of swinging of the shutter 46 can be swung at the mounting position of the shutter 46. The horizontal axis p1 may be provided in a direction along the axial center of the lateral feed screw 41 so that the horizontal axis p1 is positioned laterally to the opening of the discharge port case 45A.

[3 of another embodiment]
In the above-described embodiment, the shutter 46 itself is configured to serve as a cam follower by directly contacting the back surface side of the shutter 46 with the rotary cam 60 on the shutter driving device 5 side. For example, a contact guide plate piece or a roller other than the shutter 46 may be attached to the rear surface side of the shutter 46 and brought into contact therewith.

[4 of another embodiment]
In the structure using the contact detection operation body 53 and the cam position detection potentiometer 54 as the angle detector 52 for detecting the operation position of the rotary cam 60, the driving direction of the rotary cam 60 by the shutter driving device 5 is set to one direction. However, the present invention is not limited to this, and the open / close electric motor 50 is configured to be capable of forward and reverse rotation, and the rotary cam 60 is configured to reciprocate within a predetermined angle range. May be.

[5 of another embodiment]
In the above-described embodiment, an example in which the guide rail 22, the electric motor 23 for expansion / contraction, the drive sprocket 23a, the driven sprocket 23b, the transmission chain 24, the piece member 25, and the like are used as the expansion / contraction driving mechanism 21 is shown. For example, a structure in which a rack gear is fixed to one of the start-end side transfer cylinder 40a and the end-side transfer cylinder 40b and a rack pinion is provided on the other side, or the start-end side transfer cylinder 40a and the end-side side are driven. It is possible to adopt an appropriate structure, such as installing a hydraulic cylinder that can be expanded and contracted across the transport cylinder 40b. Moreover, it is of course possible to apply the present invention to the grain carry-out device 2 that does not have such a stretchable structure.

[6 of another embodiment]
Regarding the removal of the shutter 46, as shown in the embodiment, it is not limited to a structure in which the support shaft 46a pivotally supporting the shutter 46 can be inserted and removed, and the mounting plate 7 to which the shutter driving device 5 is attached is attached to the discharge plate. The shutter 46 may be removed together with the attachment plate 7 together with the shutter driving device 5 and the operation mechanism 6 so that the outlet case 45A can be attached and detached.

[7 of another embodiment]
The “reference storage position” within the turning operation range of the grain unloading device 2 is not limited to the position directly above the cradle 19 as shown in the embodiment, but is set to a wider range in the turning direction. It doesn't matter. For example, as shown by phantom lines a and b in FIG. 2, an appropriate range such as an angle range α where the discharge port 45 is located on the traveling machine body or an angle range that does not protrude significantly from the traveling machine body can be set. .

[8 of another embodiment]
As a “reference storage position” within the turning operation range of the grain unloading device 2, a detection switch (see FIG. 5) provided on the receiving table 19 when the vertical feed conveyance unit 3 reaches the standard storage position and the horizontal feed conveyance unit 4 is received. The position at which the laterally-feeding transport unit 4 detects the state stored in the cradle 19 may be the position of the electric motor 50 for opening / closing of the shutter drive device 5 based on the detection result of the detection switch. On the other hand, a control signal may be output from the control device 100 so that the shutter 46 is driven to the shutter closing side.

[9 of another embodiment]
In order to output a control signal from the control device 100 so as to drive the shutter 46 toward the shutter closing side with respect to the opening / closing electric motor 50 of the shutter driving device 5, the vertical position at the time when the automatic storage switch (not shown) is pressed is operated. The position of the feed conveyance unit 3 in the turning direction is detected by the turning potentiometer 34, the time required for the lateral feed conveyance unit 4 to reach the reference storage position is calculated from the position detected by the potentiometer 34, and the automatic storage is performed. The shutter 46 may be configured to be closed after a time that is assumed to be required from the time when the switch is pressed to the time when the laterally transporting portion 4 reaches the reference storage position.

[10 of another embodiment]
In order to output a control signal from the control device 100 so as to drive the shutter 46 toward the shutter closing side with respect to the opening / closing electric motor 50 of the shutter drive device 5, the time point when the discharge stop switch 27b is operated or the automatic operation not shown in the figure. The shutter 46 may be configured to be closed after a predetermined time from when the storage switch is pressed. The predetermined time is, for example, that the horizontal feed cylinder 40 provided on the upper end side of the vertical feed cylinder 30 is farthest from the reference storage position around the vertical axis y that is the rotation center of the vertical feed screw 31. What is necessary is just to set suitably, such as the time which is estimated that it is required for the feed cylinder 40 to turn to the reference | standard storing position, or the time defined arbitrarily. Further, the predetermined time may be configured to be changeable by a dial operation (not shown).

  The present invention relates to a combine grain carry-out device, and the combine is not limited to the self-removing type, and may be a whole-pile-in type.

2 Grain unloading device 3 Longitudinal transport unit (grain transport unit)
4 Transverse transport section (grain transport section)
DESCRIPTION OF SYMBOLS 5 Shutter drive device 6 Operation mechanism 26 Grain discharge clutch 26a Clutch motor 27 Discharge clutch switch (carry-out command means)
28 Unloader operation tool (swivel operation tool)
30 Vertical feed cylinder (cylinder for conveyance)
31 Vertical feed screw (Screw for conveyance)
34 Turning potentiometer (turning position detection means)
35 Emergency mode switch 40 Horizontal feed cylinder (cylinder for conveyance)
41 Transverse feed screw (conveying screw)
45 Discharge port 45A Discharge port case 46 Shutter 50 Electric motor for opening / closing 51 Output shaft 52 Angle detector (open / close detection means)
100 Controller x Horizontal axis y Vertical axis

Claims (2)

A grain transport unit with a transport screw installed inside the transport cylinder is provided, and the discharge port provided on the transport end side of the grain transport unit is swung around the horizontal axis in the direction crossing the discharge port. A combine carrying-out device provided with a shutter capable of moving and opening and closing the discharge port,
The shutter drive device that opens and closes the shutter with the driving force of the opening / closing electric motor, the unloading command means for turning on and off the drive of the transfer screw of the grain transfer unit, and the transfer cylinder of the grain transfer unit up and down A turning drive device that turns around an axis, a turning operation tool that artificially outputs a turning operation command to the turning drive device, and the transfer cylinder are preset around the vertical axis. A turning position detecting means for detecting whether or not the reference storage position has been reached, and a control device for controlling the operation of the shutter driving device and the conveying screw,
In the control device, in response to an input of an operation signal for instructing to stop driving by the carry-out command means, a driving stop command to the conveying screw is maintained while maintaining the shutter open posture by the shutter driving device. And the operation command to the shutter closing posture side is output to the shutter driving device based on the detection result that the conveying cylinder has reached the reference storage position by the turning position detecting means. The combine grain carrying-out apparatus characterized by being comprised in this.   The grain transport unit is composed of a vertical feed transport unit that pivots around the vertical axis and a horizontal feed transport unit that swings around the horizontal axis, and the horizontal feed unit reaches the reference storage position. 2. The combine according to claim 1, wherein when it is detected, an operation command to the shutter closing posture side with respect to the shutter driving device is output in the entire range of the undulation swing range at the reference storage position. Grain unloading device.

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