JPH0783663B2 - 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 directs the operation of each of a lifting actuator and a turning actuator of a grain discharging auger pivotally attached to a machine body so as to be lifted and lowered. The present invention relates to an operating device for a grain discharging auger in a combine, which is provided with a manually operated operating means and a control means for controlling the operation of the actuator based on instruction information from the operating means.

[Conventional technology]

In the operating device of the grain discharging auger in the above combine of the above, in the case of discharging the grain from the auger,
For example, the auger discharge port may be located on the bed of the truck, or the bag may be packed in set amounts.

Therefore, it is necessary to finely adjust the position of the auger outlet so that the grains can be uniformly discharged on the loading platform, or to adjust the position of the auger outlet to move it to the next bag position. Will occur.

However, when the auger is moved from the storage position on the machine body side to the grain discharge position, it is desired that the auger can be moved at high speed so as to be quickly moved to the target position.

Therefore, conventionally, a manually-operated operating means is provided so as to be switchable between two positions, that is, a state in which an actuator for moving an auger is driven at a low speed and a state in which it is driven at a high speed. Then, the moving speed of the auger is switched between high and low (see Japanese Patent Application Laid-Open No. 62-122528 previously proposed by the applicant).

[Problems to be Solved by the Invention]

However, if the auger is in grain discharge,
When moving at high speed, it is difficult to finely adjust the discharge position of the grain, so it is necessary to move the auger at low speed. Therefore, in the conventional configuration in which the moving speed is switched between high and low, it is necessary to switch the moving speed to the low speed side every time the grain discharging operation is performed, which is troublesome.

The present invention has been made in view of the above circumstances, and an object thereof is to automatically reduce the moving speed of an auger at the time of discharging a grain.

[Means for Solving the Problems]

An operating device for a grain discharging auger in a combine according to the present invention is a manually operated type for instructing operations of a lifting actuator and a swinging actuator of a grain discharging auger pivotally attached to a machine body so as to be lifted and lowered. The operating means and the control means for controlling the operation of the actuator based on the instruction information of the operating means are provided, and the characteristic configuration thereof is whether or not the auger is in a grain discharging state. Grain discharge state detection means for detecting whether or not is provided, the control means, when the auger is in the grain discharge state, the movement speed is slower than when not in the grain discharge state, the grain The operating speed of the actuator is automatically adjusted based on the detection information of the particle discharge state detecting means.

[Work]

In other words, it is detected whether or not the auger is in the grain discharge state, and when the auger is in the grain discharge state, the moving speed is automatically made slower than in the case where the auger is not in the grain discharge state.

Incidentally, as a specific configuration for slowing down the moving speed of the auger, for example, the control means, when the auger is in a grain discharge state, intermittently actuates the actuator, and the auger is a grain The actuator may be configured to be continuously operated when not in the discharge state.

〔The invention's effect〕

Therefore, when the grain is discharged, the moving speed of the auger automatically becomes slower than when the grain is not discharged, so that the fine adjustment of the auger position during the grain discharge becomes easier. When the grain is not discharged, the work speed is not lowered because the moving speed is automatically increased. Therefore, the operability of the operating means at the time of discharging the grain can be improved.

〔Example〕

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

As shown in FIG. 6 and FIG. 7, in the combine, a mowing part (2) is provided in the front part of a vehicle body (V) equipped 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 FIG. 6, (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) is rotated around the vertical axis (Y) at the upper end of the vertical screw conveyor (8), which coincides with 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). Then, 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 electric motor (14) is supplied with drive power.
By performing PWM modulation, it is possible to switch between an intermittent drive state and a continuous drive state so that the turning speed of the auger (6) automatically becomes slower in the grain discharging state than in the grain discharging state. It has become.

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. 3, the driving force from the engine (E) and the input pulley (10) interlocked with 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 for the electric motor (19) for operating the clutch. Also, (SW ₂ ) is the belt tension type clutch (1
A switch for detecting the disengaged state of 1), which is built in the electric motor (19) for clutch operation.

Therefore, the control device (26) discharges the grain based on the operation state of the switch (22) for instructing grain discharge on the machine side or the switch (S ₉ ) for instructing grain discharge on the auger side. It will be determined whether or not there is a state. That is, the grain discharge instruction switches (22) and (S ₉ ) correspond to the grain discharge state detecting means, and the manually operated type is controlled by using the control device (26). The operation of the turning electric motor (14) and the lifting hydraulic cylinder (15) based on the instruction information of the operation lever (23) and the operation section (25) as the operation means of Control means (10) for automatically switching the moving speed of the auger (6) based on the detection information of the grain discharge state detection means.
0) will be configured.

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

First, the grain discharge switch (23) on the machine side or the grain discharge instruction switch (S ₉ ) attached to the operation section (25) on the auger side is turned on to instruct the grain discharge. It is determined whether or not.

When there is an instruction to discharge the grain, the electric motor (19) for operating the clutch is normally driven until the switch (SW ₁ ) for detecting the engaged state of the clutch (11) is turned on. become.

On the other hand, when the grain discharge switch (23) is OFF and there is no instruction for grain discharge, the electric motor (19) is turned on until the switch (SW ₂ ) for detecting the disengaged state of the clutch (11) is turned ON. Will be driven in reverse.

Next, in both cases where there is an instruction to eject the grain and when there is no instruction to eject the grain, the plurality of operation states for detecting the operation state of the operation lever (23) or the operation section (25) are detected. Based on the operating state of the individual switches (S _{1 to} S ₈ ),
It is determined whether or not there is a turning instruction.

When a turning instruction is given, the electric motor (14) for turning is driven to rotate normally or reversely in accordance with the instructed turning direction.

However, when driving the electric motor (14),
As described above, when the grain is discharged, the electric power supplied to the electric motor (14) is PWM-modulated to intermittently operate, and the moving speed of the auger (6) is switched to a low speed. If the grain is not discharged, the auger (6) is moved at high speed by continuously driving. When there is no turning instruction, the turning electric motor (14) is stopped.

[Another embodiment]

In the above embodiment, the case in which it is determined whether or not it is in the grain discharge state based on the operation state of the grain discharge instruction switches (22) and (S ₉ ) is illustrated. Switch (SW ₁ ) for detecting the on / off state of (11),
The determination may be made based on the detection information of (SW ₂ ), and the specific configuration of the grain discharge state detection means can be variously changed.

Further, in the above-mentioned embodiment, the operation speed of only the electric motor (14) as the turning actuator is changed to high or low, but the operation speed of the hydraulic cylinder (15) as the lifting actuator is shown. Also, it may be changed based on whether or not the grain is discharged. By the way, when the operating speed of the hydraulic cylinder (15) is changed, the throttling amount is changed so as to change the amount of hydraulic oil supplied to the hydraulic cylinder (15) per unit time, and the control valve ( 28) should 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.

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, Fig. 2 is a flowchart of control operation, and Fig. 3 is a grain discharging clutch. FIG. 4 is an enlarged front view of the operating portion on the tip side of the auger, FIG. 5 is an enlarged side view of an essential portion showing the operating configuration for turning and raising and lowering the auger, and FIG. 6 is an overall side surface of the combine. FIG. 7 and FIG. 7 are plan views of the same. (V): Airframe, (6): Auger for discharging grain, (14)
...... Rotating actuator, (15) …… Elevating actuator, (23), (25) …… Manual operation type operation means,
(22), (S ₉ ) ... Grain discharge state detection means, (100) ...
… Control means.

Claims (2)

[Claims] 1. A manual for instructing the operation of 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. Operation type operation means (23), (25) and control means (100) for controlling the operation of the actuators (14), (15) based on the instruction information of the operation means (23), (25). An operating device for a grain discharging auger in a combine provided with and, wherein the grain discharging state detecting means (22), (S ₉ ) for detecting whether or not the auger (6) is in a grain discharging state. ) Is provided, the control means (100),
When the auger (6) is in the grain discharging state, the movement speed thereof is slower than that in the non-grain discharging state,
For grain discharge in a combine configured to automatically adjust the operation speed of the actuators (14), (15) based on the detection information of the grain discharge state detection means (22), (S ₉ ). Ogre operating device. 2. An operating device for a grain discharging auger in a combine according to claim 1, wherein said control means (100).
When the auger (6) is in a grain discharge state, the actuators (14) and (15) are intermittently operated,
And when the auger (6) is not in the grain discharge state,
An operating device for a grain discharging auger in a combine, which is configured to continuously operate the actuators (14) and (15).