JPH0687709B2 - Operation device of auger for grain discharge in combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to driving and stopping of a lifting actuator and a turning actuator of a grain discharging auger pivotally attached to a machine body so as to move up and down and turn freely. An operating device for a grain discharging auger in a combine, which is provided with a manually operated operating means for instructing and a control means for controlling the operation of the lifting actuator or the turning actuator based on instruction information of the operating means. Regarding

[Conventional technology]

In the operating device for the grain discharging auger in this type of combine, the actuator is usually configured to be driven at the maximum speed in order to quickly move to the desired target position.

However, if the moving speed of the auger is high, for example, when finely adjusting the position of the auger once stopped,
There is an inconvenience that the moving speed is too fast and it becomes difficult to finely adjust.

Therefore, conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 62-122528, the manually operated operation means is switched between two positions, that is, a state in which the actuator is driven at a low speed and a state in which the actuator is driven at a high speed. It is provided freely so that the moving speed of the auger can be selectively switched between high and low based on the detected information of the operation position.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional configuration, it is necessary to provide a means for detecting which of the high and low operation positions the manually operated operation means has, and there is a disadvantage that the apparatus configuration becomes complicated.

Further, it is necessary to adjust the operation position of the operation means according to the moving speed to be selected, which makes the operation troublesome.

The present invention has been made in view of the above circumstances, and an object thereof is to facilitate fine adjustment of an auger position while simplifying the apparatus configuration.

[Means for Solving the Problems]

An operating device for a grain discharging auger in a combine according to the present invention is a manual instruction to drive and stop a lifting and lowering actuator and a swinging actuator for a grain discharging auger pivotally attached to a machine body so as to be lifted and lowered. An operation type operation means and a control means for controlling the operation of the lifting actuator or the turning actuator based on instruction information of the operation means are provided, and the characteristic configuration thereof is the grain discharge. Is provided with time measuring means for measuring the elapsed time after the drive command for raising or lowering or turning to the auger for agglomeration is instructed by the operating means, and the control means is provided when the movement of raising or lowering or turning of the grain discharging auger is started So that the moving speed at the time of travel is slower than the speed at the time of moving in the range following the moving range at the start of the moving. Based on the information means, certain operating speed of the elevating actuator or swing actuator that is configured to automatically adjust.

In addition, as a specific configuration for slowing the moving speed at the time of starting the movement of the grain discharging auger than that at the time of the subsequent movement, for example, the control means may be driven to move up and down or turn by a manually operated operation means. As the moving speed of the grain discharging auger gradually increases toward the set maximum speed with the increase of the elapsed time after being instructed, the operating speed of the lifting actuator or the turning actuator is continuously or It is configured to change in stages, or the control means is
Until the elapsed time becomes longer than the set time, the lift actuator or the swing actuator is operated once for a predetermined time shorter than the set time, and after the set time has elapsed, the lift actuator is operated. Alternatively, the turning actuator may be configured to be continuously operated.

[Action]

When fine-adjusting the position of the grain discharging auger stopped at any position, manual operation is performed for a shorter time than when moving the grain discharging auger continuously toward the target position. The operation means of the formula will be operated.

Therefore, the elapsed time after the instruction to drive the raising or lowering or the turning is instructed by the manually operated operating means, and the moving speed of the raising or lowering or the turning of the grain discharging auger is slower than the subsequent moving at the start of the moving. The operating speed of the lifting actuator or the turning actuator is automatically adjusted so that the speed becomes the same.

For this reason, when finely adjusting the position of the grain discharging auger, the grain discharging auger is slowly moved up and down and rotated, so that the grain discharging auger does not need to be switched between high and low speed. It is easy to perform good position adjustment and adjustment only by instructing by the operating means for driving the discharging auger.

〔The invention's effect〕

Therefore, the moving speed at the time of starting the movement of the grain discharging auger can be automatically made slower than the moving speed at the time of the subsequent movement. Therefore, it is not necessary to provide a means for detecting which high or low movement speed is selected, and it is possible to simplify the overall apparatus configuration. Further, since the moving speed of the grain discharging auger is automatically decreased at the start of the movement, it is possible to reduce the shock at the start of the movement.

In the case of continuously moving the grain discharging auger, the grain discharging auger can be moved at a high speed only by continuously operating the operating means, and the operability is rather improved.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 7 and FIG. 8, in the combine, a mowing part (2) is provided in the front part of a vehicle body (V) provided with a pair of left and right crawler traveling devices (1), and the mowing part (2) is provided. On the rear side of the control section (3), a threshing device (4) for threshing the grain culms cut by the mowing section (2) to sort and collect the grains, and the threshing device (4). A grain tank (5) for storing the grains to be sorted and collected is installed. In addition, in FIG. 7, (E) is an engine.

Then, an auger (6) for discharging the grains stored in the grain tank (5) to the outside of the machine is provided on the rear side of the grain tank (5) so as to be rotatable and movable up and down. Has been.

A description will be given of a grain transport structure from the grain tank (5) to the auger (6). A bottom screw conveyor that transports the grain in the tank to the rear side of the machine is provided at the bottom of the grain tank (5). (7) is provided, and the grain tank (5) is provided from the conveying end of the bottom screw conveyor (7).
Is provided with a vertical screw conveyor (8) for lifting the grains upward, and the upper end of the vertical screw conveyor (8) is provided with the grains to be lifted by the auger (6).
Is provided with a horizontal screw conveyor (9) that conveys toward a discharge port (6a) formed on the front end side of the.

However, although not described in detail, each of the bottom screw conveyor (7), the vertical screw conveyor (8), and the horizontal screw conveyor (9) uses bevel gears to integrally rotate their axes. As described above, the augers (6) are interlocked and connected. Then, as will be described later, an input pulley (for driving the bottom screw conveyor (7) to rotate is provided at an end portion of the grain tank (5) on the front side of the machine body which is on the transfer side of the bottom screw conveyor (7). 10) is provided.

The power transmission to the pulley (10) is made to be turned on and off by a belt tension type clutch (11) as described later.

That is, as the belt tension type clutch (11) is turned on and operated, the grains in the grain tank (5) are discharged to the outside of the machine, and the belt tension type clutch. As (11) is turned off,
The discharge of the grain will be stopped.

Explaining the turning operation structure of the auger (6),
As shown in FIG. 5, the horizontal screw conveyor (9)
A connection case (9A) connected to the base end of the vertical screw conveyor (8) pivots around the vertical axis (Y) at the upper end of the vertical screw conveyor (8) that matches the screw axis of the vertical screw conveyor (8). The gear (12) for swiveling drive is fixed to the outer surface of the connection case (9A). An electric motor (14) as a turning actuator that rotationally drives the gear (13) that meshes with the turning drive gear (12) is provided in a state of being fixed to the vertical screw conveyor (8), As the electric motor (14) is driven in the forward and reverse directions, the auger (6) is turned around the vertical axis (Y), and
The rotation of the electric motor (14) is stopped when the electric motor (14) is stopped.

However, the operating speed of the electric motor (14) can be changed by PWM-modulating the supplied drive power as described later.

That is, as will be described in detail later, the auger (6) gradually increases its moving speed toward the maximum speed with the increase of the elapsed time from the start of its movement.

Explaining the lifting operation structure of the auger (6),
As shown in FIG. 5, the horizontal screw conveyor (9)
The base end part of is at the upper end part of the connection case (9A),
It is also rotatably mounted around a horizontal axis (X) that intersects the vertical axis (Y). A hydraulic cylinder (15) as an ascending / descending actuator is provided between the base end of the horizontal screw conveyor (9) and the connection case (9A).
Is provided so that the auger (6) is operated to be raised as the hydraulic cylinder (15) is extended, and
As the hydraulic cylinder (15) is contracted, the auger (6) is lowered.

Explaining the belt tension type clutch (11), as shown in FIG. 6, the driving force from the engine (E) and the input pulley (10) interlockingly connected to the bottom screw conveyor (7) are connected. Drive pulley transmitted (16)
And are linked together by a belt (17), and the belt (17)
The tension pulley (18) acting on the electric motor (1
It is interlockingly connected to a link member (20) which is connected to the free end of an arm (19a) which is vertically swung by means of (9).

That is, as the link member (20) is pulled upward, the tension pulley (18) is pressed by the belt (17), and the drive pulley (16) moves to the input pulley (10). The power transmission is switched to the on state, and the grain is discharged. On the other hand, as the link member (20) is pushed downward, the pressing action of the tension pulley (18) on the belt (17) is released, and power is transmitted to the bottom screw conveyor (7). Will be cut off and grain discharge will be stopped.

In the figure, (21) is a spring for buffering the operating force to the tension pulley (18), and (22) is a manually operated grain discharge switch for instructing start and stop of grain discharge. Further, (23) is a manually operated operation lever as a manually operated operation means for instructing the driving of the turning electric motor (14) and the lifting hydraulic cylinder (15). Together with the switch (22), it is provided on the operation panel (24) provided on the front side of the body of the grain storage tank (5). Further, (SW ₁ ) is a switch for detecting that the clutch (11) is in the engaged state, that is, the auger (6) is in the grain discharge state, and is swung by the electric motor (19) for operating the clutch. Moved arm (19
In a), it is designed to be operated.

However, the operation lever (23) is instructed to move up and down by operating in the front-back direction of the machine body, and instructed to turn by operating in the left-right direction. It should be noted that when the operation is performed in an oblique direction, it is possible to instruct up and down and turning at the same time.
Then, although not described in detail, it is urged to return to the neutral state, and when the operation is stopped, the state is automatically returned to the neutral state, and the lifting and turning of the auger (6) are stopped.

By the way, as shown in FIG. 4, at the tip of the auger (6), a manual operation type operation means for instructing to drive the turning electric motor (14) and the lifting hydraulic cylinder (15) is provided. The operation part (25) of the
The turning and lifting of the auger (6) can be operated by both 5) and the operating lever (23) on the machine side.

The operation portion (25) at the tip of the auger (6) is raised by a plurality of push button type switches (S _{5 to} S ₈ ).
It is configured to individually instruct each of descending, turning left, and turning right. Further, a switch (S ₉ ) of a changeover type for instructing discharge and stop of the grain is provided.

Although not described in detail, if the operation direction of the operation section (25) is opposite to the operation direction of the operation lever (23) on the machine side, for safety, this operation section ( The instructions given by 25) are prioritized. In addition, the instruction of the operation unit (25) is prioritized in the same manner for the instruction of discharging and stopping the grain.

As shown in FIG. 1, an operating portion (25) provided at the tip of the operating lever (23) on the fuselage side or the auger (6).
Based on the instruction information from the electric motor for turning (1
4) and a control device (26) using a microcomputer for controlling the operation of the lifting hydraulic cylinder (15).

In FIG. 1, (27) is a drive circuit for the electric motor (14), (28) is a control valve for the hydraulic cylinder (15), and (29).
Is a drive circuit of the electric motor (19) for operating the clutch,
(SW ₀ ) is a threshing switch which detects that the threshing device (4) is in a driving state, and a threshing clutch (which controls the transmission of the driving force from the engine (E) to and from the threshing device (4) ( The operating state (not shown) is detected. Further, (SW ₀ ) is a switch for detecting the disengaged state of the belt tension type clutch (11) and is incorporated in the clutch operating electric motor (19).

That is, by using the control device (26), based on the instruction information of the operation lever (23) and the operation section (25) as the manually operated operation means, the turning electric motor (14) And a control means (100) for controlling the operation of the lifting hydraulic cylinder (15), and the operation lever (23) and the operation section (25) as the manually-operated operation means for driving up and down or turning. A time measuring means (101) for measuring an elapsed time after being instructed is configured.

The operation of the control device (26) will be described below with reference to the flowchart shown in FIG.

First, based on the states of the plurality of switches (S _{1 to} S ₈ ) that detect the operating state of the operating lever (23) or the operating portion (25), it is determined whether or not a turning instruction has been given.

If there is no turning instruction, the first flag (fragl) indicating that the auger (6) has been switched from the stopped state to the movement start state, and that the set time has elapsed after the auger (6) starts movement. Both of the second flags (frag2) indicating the are reset to false.

When there is a turning instruction, the second flag (frag
2) is true, and if true, it is determined that the auger (6) has moved for a set time or longer after the start of movement, and the second flag ( After setting frag2) to true, the electric motor (14) is continuously driven to move the auger (6) at the maximum speed.

If the second flag (frag2) is not true (true), it is determined whether the first flag (fragl) is true (true). The 1 flag (frag1) is set to true, and the value (TIME) of a timer (not shown) for measuring the elapsed time after the start of movement is initialized to zero.

When the first flag (frag1) is true, "1" is added to the timer value (TIME) to measure the elapsed time.

Then, after the elapsed time is measured, it is determined whether or not the value (TIME) of the timer reaches a preset value (S) corresponding to the preset time, and the preset value (S If it has reached S), it is determined that the set time or more has elapsed after the start of movement, and the second flag (frag2) is set to true (true).
To the process for continuously driving the electric motor (14).

When the timer value (TIME) has not reached the set value (S), the drive power of the electric motor (14) is set to PW.
ON time and OFF of drive pulse for adjustment by M modulation
Each time is calculated based on each of the following equations (i) and (ii), and the electric motor (14) is pulse-driven.

ON = S · TIME / α (i) OFF = S · (1-TIME / α) (ii) where α is a preset constant.

That is, the process of measuring the value of the timer (TIME) corresponds to the time measuring means (101), and the operating speed of the electric motor (14) is changed and adjusted based on the value of the timer (TIME). The processing to be performed corresponds to the control means (100). Then, according to the above equations (i) and (ii), the control means (100) increases the elapsed time until the set time elapses after the start of the movement of the auger (6) and the auger (6) increases. ), The operating speed of the electric motor (14) is changed stepwise so that the moving speed is gradually increased toward the set maximum speed.

Although not described in detail, the clutch operating electric motor (19) is turned on when the discharge switch (22) is turned on.
To drive the clutch (11) in the forward direction, and the electric motor (19) is driven in the reverse direction as the discharge switch (22) is turned off.
The clutch (11) will be disengaged.

However, in order to prevent the grains from being discharged outside the machine even if the discharge switch (22) is erroneously turned on during the threshing work, the clutch (11) is provided during the threshing work. Is configured to automatically return to the cut state.

If the explanation is added based on the flowchart shown in FIG. 3, whether or not the threshing work is being performed based on whether or not the threshing switch (SW ₀ ) is ON when the control is started. Determine whether or not.

When the threshing switch (SW ₀ ) is OFF, based on the information of the switch (SW ₁ ) that detects the engagement state of the clutch (11), the discharge stop position, that is, the clutch (1
1) is in the engaged state, and when it is in the engaged state, the switch (SW ₂ ) for detecting the discharge stop position, that is, the clutch (11) being in the disengaged state is turned on, After the electric motor (19) is driven in the reverse direction, it is automatically stopped.

If the threshing switch (SW ₀ ) is ON, or
When the grain discharge state detection switch (SW ₁ ) is ON, this discharge stop process is not performed.

[Another embodiment]

In the above embodiment, the turning electric motor (14) is so arranged that the moving speed of the auger (6) gradually increases toward the set maximum speed as the elapsed time increases from the start of the movement of the auger (6). Although the example in which the operating speed of) is configured to be changed stepwise is illustrated, it may be changed continuously.

Further, as shown in FIG. 9, instead of the configuration in which the moving speed of the auger (6) is gradually increased toward the set maximum speed with the increase of the elapsed time, the elapsed time is changed from the set time (T ₀ ). Until it becomes large, the electric motor (14) is operated once for a predetermined time (t ₀ ) shorter than the set time (T ₀ ), and after the set time elapses, the electric motor (14) ) May be continuously operated.

In addition, as shown in FIG. 10, it is determined whether or not a turning instruction has been given by either the operation lever (23) or the operation section (25). If there is no instruction, the auger ( After clearing the timer for measuring the elapsed time after the instruction to turn in 6) and resetting the flag (frag) indicating that the set time or more has passed to false (FALSE), the electric motor (14 ) Will stop the drive output.

When a turning instruction is given, it is determined whether or not the flag (frag) is true (TRUE), and when it is not true (TRUE), the timer is cleared and the flag (frag) is set. After setting to TRUE, the timer counts up.

On the other hand, when the flag (frag) is true (TRUE), the timer is counted up as it is.

After counting up the timer, after executing an output process for driving the electric motor (14), it is determined whether or not the measured time (T) matches the predetermined time (t ₀ ), When the predetermined time (t ₀ ) has been reached, the output is stopped and the electric motor (14) is stopped.

When the measurement time (T) does not match the predetermined time (t ₀ ), it is determined whether or not the measurement time (T) is the set time (T ₀ ) or more, and the set time (T ₀ ). When it is at least T ₀ ), the electric motor (14) is continuously driven. However, when the measured time (T) is longer than the predetermined time (t ₀ ) and less than the set time (T ₀ ), the electric motor (14) is maintained in the stopped state.

Further, in the above embodiment, the case where only the electric motor (14) as the turning actuator is changed in the operating speed at the time of starting the movement is described, but the hydraulic cylinder (15) as the lifting actuator is The operating speed may also be changed. By the way, as a configuration for changing the operating speed of the hydraulic cylinder (15), the hydraulic cylinder (15)
The throttle amount may be changed so as to change the amount of hydraulic oil supplied to the unit per unit time, or the control valve (28) may be pulse-driven.

In the above embodiment, the electric motor (14) is used as the swing actuator and the hydraulic cylinder (15) is used as the lift actuator. However, the electric motor is used as both the swing and lift actuators. Alternatively, a hydraulic cylinder may be used, and the specific structure of the actuator can be changed in various ways.

Further, in the above embodiment, the case where the grain discharge is automatically returned to the stop state when the threshing device (4) is switched from the drive state to the drive stop state is illustrated, but the control device (26) It may be configured to automatically return to the stopped state of the grain discharge when the power is turned on. Further, when the grain is discharged, a buzzer or an indicator light may be operated to call the operator's attention.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of an operating device for a grain discharging auger in a combine according to the present invention. Fig. 1 is a block diagram of a control configuration, Figs. 2 and 3 are flowcharts of control operation, and Fig. 4 is an auger. 5 is an enlarged front view of the operation unit on the tip side, FIG.
FIG. 6 is an enlarged side view of an essential part showing an operating structure for turning and lifting an auger, FIG. 6 is a front view showing a structure of a grain discharging clutch, FIG. 7 is an overall side view of a combine, and FIG. 8 is the same plane. 9 and 9 are explanatory views of another embodiment, and FIG. 10 is a flowchart of the control operation. (V): Airframe, (6): Auger for discharging grain, (14)
...... Rotating actuator, (15) …… Elevating actuator, (23), (25) …… Manual operation type operation means,
(100) …… Control means, (101) …… Time measuring means.

(72) Inventor Tamaki Naka, 64, Ishizukita-machi, Sakai City, Osaka Prefecture, Sakai Factory, Kubota Iron Works Co., Ltd. (72) Suzo, Ueda, 64, Ishizukita-machi, Sakai City, Osaka Prefecture In-house (56) Reference Japanese Unexamined Patent Publication No. Sho 62-122528 (JP, A) Actual Kaihei 1-121342 (JP, U) Actual Official Sho 62-11386 (JP, Y2)

Claims (3)

[Claims] 1. An instruction to drive and stop a lifting actuator (15) and a turning actuator (14) of a grain discharging auger (6) pivotally attached to the machine body (V) so as to be able to move up and down and turn freely. Manually operated operation means (23), (2
5) and control means (100) for controlling the operation of the lifting actuator (14) or the turning actuator (15) based on the instruction information of the operating means (23), (25).
An operating device for a grain discharging auger in a combine provided with, wherein a drive command for raising or lowering or turning to the grain discharging auger (6) is the operating means (23), (2).
Time measuring means (101) for measuring the elapsed time after being instructed by 5) is provided, and the control means (100) moves the grain discharging auger (6) at the start of lifting or turning movement. Based on the information of the time measuring means (101), the ascending / descending actuator (14) or the one for turning so that the speed becomes slower than the speed at the time of the movement in the range following the movement range at the start of the movement. An operating device for a grain discharging auger in a combine, which is configured to automatically adjust an operating speed of an actuator (15). 2. An operating device for a grain discharging auger in a combine according to claim 1, wherein said control means (100).
Is a lifting actuator (14) or a turning actuator (15) so that the moving speed of the grain discharging auger (6) gradually increases toward the set maximum speed as the elapsed time increases. An operating device for a grain discharging auger in a combine, which is configured to continuously or stepwise change the operating speed of the. 3. An operating device for a grain discharging auger in a combine according to claim 1, wherein said control means (100).
Until the elapsed time becomes longer than a set time, the elevator actuator (14) or the turning actuator (15) is operated once for a predetermined time shorter than the set time, and An operating device for a grain discharging auger in a combine, which is configured to continuously operate the lifting actuator (14) or the turning actuator (15) after a lapse of time.