JP2000166371A - Operation controller for grain discharge auger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manually actuate a grain discharge auger in such a manner that fine adjustment can be performed safely. SOLUTION: An operating lever 52 for an operation box is placed at the front end part of a lateral auger cylinder in a grain discharging auger of a combine, as a manual operation-directing means. A vertical auger cylinder is horizontally rotated with a turning actuator 28 by operating the operation lever 52. The lateral auger cylinder is vertically rotated by the action of a hydraulic cylinder 34. When these augers are directed to rotate in these ways, the action speed of the operation lever 52 is controlled by a controller 41 so that the speed is slow at the start of action, and it becomes rapid when the duration of the action becomes long.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling the operation of a grain discharging auger in a traveling vehicle equipped with a grain tank such as a combine.

[0002]

2. Description of the Related Art Conventionally, this type of grain discharging auger is disclosed in, for example, Japanese Patent Laid-Open Publication No.
No. 31, etc., a vertical auger cylinder with a vertical screw conveyor erected adjacent to a grain tank mounted on a combiner, and a horizontal screw conveyor with a horizontal screw conveyor erected at its upper end so as to be able to move up and down freely Consists of an auger cylinder,
A hydraulic cylinder mounted between a vertical auger cylinder and a horizontal auger cylinder. The horizontal auger cylinder is configured so that its tip swings up and down, and the vertical auger cylinder is mounted to be able to rotate horizontally about the vertical axis. By rotating the vertical auger cylinder by the gear pair and the drive motor, the position of the tip (discharge port) of the horizontal auger cylinder is positioned on the combine, or on the bed of another grain transport truck, etc. There has been proposed a configuration in which it can be arranged at a location.

In recent combiners, an operation command operating section for instructing the degree of turning or raising and lowering of the grain discharging auger is provided in the cab and at the tip of the lateral auger. There has been proposed a configuration in which an operation command can be issued from any of the operation units.

[0004]

By the way, for example, prior to the operation of discharging the grains from the combine to the grain transfer truck, or while performing the operation of discharging the grains, the discharge port on the distal end side of the horizontal auger cylinder is set to the above-mentioned state. It has been necessary to execute a fine adjustment operation using an operation command operation unit provided at the tip of the lateral auger cylinder so as to move at a predetermined position on the truck bed.

However, for example, when the horizontal auger is raised by a hydraulic cylinder for raising and lowering the horizontal auger, the discharge amount of hydraulic oil from the hydraulic pump per unit time varies depending on the engine speed. Even if the duty ratio of the drive to the hydraulic cylinder) is set to a low value (constant), if the engine speed is high, the operating speed will be high, and conversely, the engine speed will be too low, and The length is too long and the load increases,
It is possible that you may not lift. Even when turning by an electric motor, if the duty ratio for operation is controlled to be constant, there is a problem that only one of a high speed and a low speed can be set. The operator is separated from the operation command operation unit of the unit and becomes inoperable, so that it is difficult for the operator to fine-tune the operation.

Conversely, if the operating speed is set to a lower speed, fine adjustment is possible, but there is also a problem that it takes too much time to move in a large range.
The present invention has been made in order to solve these problems of the prior art, and is capable of safely performing fine adjustment within a reach of an operator, and for quickly moving the grain. It is a technical task to provide an auger.

[0007]

In order to achieve this technical object, an operation control apparatus for a grain discharging auger according to the first aspect of the present invention includes a grain tank mounted on a traveling body such as a combine or the like. A vertical auger cylinder capable of horizontal rotation for conveying and discharging grains, and a horizontal auger cylinder provided at the upper end of the vertical auger cylinder so as to be capable of swinging upward and downward, and for rotating the vertical auger cylinder about its longitudinal axis. In a grain discharging auger comprising an actuator and an elevating actuator for elevating and rotating the horizontal auger cylinder, the tip operating section of the horizontal auger cylinder and an operating section such as a driver's cab of the traveling machine are provided with: Operation instruction operation means for instructing operation of each auger cylinder is provided, and control means for driving a turning actuator and / or an elevation actuator in accordance with an operation command from each operation instruction operation means is provided. When the operation command from the tip operating portion of at least the transverse auger barrel, at the start operation to low speed operation, then it controls so as to gradually increase the operating speed.

[0008] The invention described in claim 2 is the first invention.
In the operation control device of the grain discharge auger described in the above, the control means, the time proportional to the ON operation time of the operation instruction operation means for instructing the horizontal auger cylinder elevating operation and the vertical auger cylinder left and right turning operation, The control is such that each auger cylinder is driven in a predetermined direction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings when applied to a combine. FIG. 1 is a front view of a combine in which a grain discharging auger is stored, FIG. 2 is a left side view of the combine, FIG. 3 is a right side view, and FIG. 5 is an operation explanatory view of a turning actuator and a raising actuator. .

On the right side in the traveling direction of the traveling body 1 of the combine supported by the traveling crawler 2, an operator's cab 11 having a control unit and an operator's seat and a grain tank 12 arranged behind the operator's cab are provided. The engine 6 is disposed below the engine 11. At the front of the traveling machine 1, a cutting pre-processing device 4 including a weeding body, a clipper-like mower, a grain stalk raising device, a grain stalk transporting device, etc. is mounted via a hydraulic cylinder 9 so as to be able to move up and down. A threshing device 3 with a feed chain 7 is arranged on the left side of 1 and the root portion of the cereal culm conveyed from the pre-cutting device 4 is inherited by the feed chain 7 while being pinched and conveyed, and the culm tip portion of the culm is conveyed. Is threshed by a handling drum 3a in a handling room of a threshing device 3, and is sorted therebelow by a rocking sorting device 5 such as a catching net and a chaff sieve and a wind sorting device by Jiang Karino. The grains (clean grain paddy) collected in the receiving trough are collected in a grain tank 8 by a fry conveyor 10. Note that the waste straw is passed to the straw chain at the rear end of the feed chain 7 and is discharged outside the rear end of the traveling machine body 6.

The grains in the grain tank 8 are stored in the engine 6
Is discharged from a bottom conveyor 15 with a screw conveyor, which rotates with the power of, to a truck bed (not shown) or the like via a grain discharge auger 13 described later in detail. One end of a screw shaft of a bottom conveyor 15 disposed at a lower portion in the grain tank 8 is connected to an output shaft from the engine 6 via an auger clutch 16. The other end of the screw shaft of the bottom conveyor 15 communicates with a support 19 fixed to the rear part of the traveling body 1, and the vertical auger cylinder 22 of the grain discharging auger 13 is connected to the support cylinder 19. It is rotatably supported and transmits power to the screw shaft of the vertical screw conveyor 21 via a transmission section (not shown) in the support cylinder 19.

As shown in FIGS. 1, 3 and 4, the grain discharging auger 13 is a vertical auger cylinder 2 having a built-in vertical screw conveyer 21 which stands upright so that the axis is substantially vertical.
2, a transfer case 23 which is connected to the upper end of the vertical auger cylinder 22 and incorporates a transfer screw having a horizontal axis, and a joint portion provided on one side of the transfer case 23 is connected to be rotatable up and down. And a horizontal auger cylinder 24 having a built-in horizontal screw conveyor 25. The grain discharging auger 13 is driven to turn left and right by a turning actuator 28 and a raising actuator to be described later, and is also driven to turn upward and downward. Has become.

The vertical auger cylinder 22 includes a column 26 which is provided on the grain tank 8 and a column 26 which stands upright from the traveling body 1.
And is rotatably supported via the. The turning actuator 28 is composed of a drive motor or the like that can rotate forward and reverse, has a reduction gear box 29, and further has a turning angle sensor 30 such as a rotary encoder or a rotary potentiometer for detecting the turning angle θ of the vertical auger cylinder 22. Are provided in relation to the output shaft. The turning actuator 28
By transmitting power from the driving gear 32 to the driven gear 33 fixed to the outer periphery of the vertical auger cylinder 22, the vertical auger cylinder 22 pivots right and left around its axis, and the horizontal auger cylinder 24 together with the handover case 23. Is configured to be able to horizontally turn left and right. An electromagnetic brake 31 is provided in a gear box 29 of a drive motor serving as the turning actuator 28 as brake means for positioning the vertical auger cylinder 22 while preventing horizontal rotation.

The hydraulic cylinder 34 as an actuator for raising and lowering the horizontal auger cylinder 24 is a single-acting type. As shown in FIGS.
Is rotatably connected to a support bracket 35 having one end fixed to the outer surface of the vertical auger tube 22 and the other end to the outer surface of the horizontal auger tube 24 via pins 36 and 37, respectively.
An elevation angle sensor 38 such as a rotary potentiometer for detecting the elevation angle with respect to the horizontal of the hydraulic cylinder 4 is provided in association with the pin 36 and the like, but is fixed to the side surface of the hydraulic cylinder 34 in parallel with its axis. The elevation angle sensor may be configured to detect the elevation angle from the amount of movement of the piston rod of the hydraulic cylinder 34.

An electromagnetic control valve 39 for controlling the operation of a hydraulic cylinder 34, which is an actuator for raising the horizontal auger cylinder 24, and a drive circuit 40 for the turning actuator 28 are provided by an output from a controller 41 as control means to be described later. Connected to operate by signal. FIG. 6 shows an operation panel 42 as an operation unit disposed behind the driver's seat in the driver's cab 11 and the like.
, An operation operation instructing means for instructing various operations of the auger 13 is arranged. That is, the grain discharging auger 13
And an auger clutch 16 which is turned ON / OFF by a single cross lever which can be turned up and down and left and right (in the cross direction) for commanding vertical up and down and left and right turning operations.
To automatically move the auger clutch switch 44 for FF and the grain discharging auger 13 in a predetermined left and right direction set in advance, and to return the auger rest 45 to the position (storage position) from that position. An auger automatic swivel switch 46 for controlling the horizontal auger cylinder 24,
Turning position setting device 47 including a variable resistor or the like for setting (setting) the automatic turning switch 46.
Set lamp 48 which is turned on when is turned to the set side.
And an auger clutch lamp 49 that lights up when the auger clutch 16 is in the ON state. When the grain discharging auger 13 is not used, the horizontal auger cylinder 24 is mounted on an auger rest (mounting table) 45 formed in an upward U-shape or the like provided on the upper surface of the traveling machine body 3.

In the embodiment, as shown in FIG. 6, when the operation lever 43 is turned upward at its tip (free end) side,
When the hydraulic cylinder 34, which is the actuator for raising, extends and the horizontal auger cylinder 24 rotates upward and the operation lever 43 rotates downward, the hydraulic cylinder 34 is shortened and the horizontal auger cylinder 24 rotates downward. Move. Operation lever 4
When 3 is tilted to the left, the horizontal auger cylinder 24 turns right in plan view,
Conversely, when the operation lever 43 is tilted to the right, the horizontal auger cylinder 24 is set to turn left in a plan view.

Both the auger clutch switch 44 and the auger automatic swivel switch 46 are rocker (seesaw) type switches. For example, when the upper side of the auger automatic swivel switch 46 is pressed, the auger automatically switches to the set left / right swivel angle. When the lower side of the auger automatic swivel switch 46 is pressed, an operation of automatically returning from the set position to the position of the auger rest 45 is executed.
In the neutral state of the auger automatic swivel switch 46, the cab 1
1, a left and right turning and a vertical raising / lowering operation are performed by a manual operation command of the operation lever 43 in 1 and the operation lever 52 in the operation box 51 at the tip of the lateral auger cylinder 24 described later.

While the operator manually operates the operation lever 43, the operation lever 43 is turned or raised. When the operator releases his / her hand, the operation lever 43 automatically returns to the neutral position and stops operating. The kernel transported to the tip of the horizontal auger cylinder 24 is discharged out of a downward discharge cylinder 50 (see FIG. 7) at the tip, and a side surface of the discharge cylinder 50 is operated as a tip operation unit. A box 51 is provided.
1 includes the above-described operation lever 4 as an operation instruction operation means.
Operation lever 5 of the same type (cross lever type) as 3
2 and an auger clutch switch 53 are arranged. Then, a transparent synthetic resin cylindrical cover body 55 attached so as to surround the lower discharge port of the discharge cylinder 50 is provided.
Inside, a grain clogging sensor 54 such as an ultrasonic sensor capable of detecting whether or not the grain is discharged is disposed.

Next, a controller 41 as an electronic control means such as a microcomputer shown in FIG. 8 is provided at an appropriate position in the cab 11 and, as will be described later, turns the grain discharging auger 13 left and right. And a central processing unit (CPU) 60 for executing various calculations and controls, and a read-only memory (ROM) for storing a control program for each of the above operations. ) 61, a random access memory (RAM) 62 for storing various data, and an input / output interface (not shown) for transmitting data by connecting to various input units and output units described later.

The input interface includes various switches on the operation panel 42, that is, an operation lever 43.
An auger clutch switch 44 for instructing the auger clutch 16 for turning on / off the power transmission to the bottom conveyor 15 in the grain tank 8, and an auger for executing an automatic storage command and an automatic set command. An automatic turning switch 46, a turning angle sensor 30 for detecting a horizontal turning angle of the vertical auger tube 22, and a horizontal auger tube 2
4 and a horizontal turning position of the vertical auger cylinder 22 (and, consequently, the horizontal auger cylinder 24).
Of the engine 6 is connected to a turning position setting device 47 including a variable resistor or the like, and an engine speed sensor 63 for detecting the speed of the engine 6.

On the other hand, the output interface includes a control valve drive circuit 65 for the electromagnetic control valve 39 of the hydraulic cylinder 34 for raising and lowering the lateral auger, a swing drive circuit 40 for the swing actuator 28, and an auger clutch drive for the auger clutch 16. The circuit 64 is connected to an electronic governor 66 that controls the amount of fuel supplied to the engine 6. When the automatic turning switch 46 is depressed to the set side, the horizontal auger cylinder 24 is controlled to rotate left and right in a predetermined operation pattern from the auger rest 45 and to stop vertically at a predetermined position (set position), When the automatic turning switch 46 is depressed to the return side, a control is performed in which the horizontal auger cylinder 24 is turned left and right in a predetermined operation pattern, and returns to the auger rest 45 by vertically raising and lowering.

Next, the mode of the left-right turning operation and the raising operation when the operator (operator) manually operates the operation lever 52 on the distal end side of the horizontal auger cylinder 24 or the operation lever 43 in the cab 11 will be described. To explain, for example, in order to rotate (turn left) in a counterclockwise direction in plan view from the position of the augerrest 45, the operation lever 52 is turned clockwise from a neutral position (when the operation lever 52 stands almost vertically to the operation panel). Move. At this time, an elapsed time T (unit, second) from the start of turning on of the turning actuator 28 is determined in advance so that the drive circuit 40 is operated at a duty ratio as shown in FIG.
Is stored in the ROM 61 or the RAM 62 so that the duty ratio increases in proportion to the curve 67a. That is, at the start of rotation, the duty ratio is Do, and increases linearly or curvilinearly (upward convex curve or downward convex curve) as the time T increases. After the time lapse T1, the duty ratio is set to 100%.
Here, the operation control based on the duty ratio is pulse width modulation control (PMW control), and is performed by a DC motor (the turning actuator 2 in the embodiment).
The driving is performed by changing the time ratio (duty ratio) of the voltage pulse (ON / OFF) applied to 8). Therefore, when the duty ratio is 100%, continuous application (continuous energization) is performed. In the case of a hydraulic cylinder or a hydraulic motor, the ON / OFF time ratio of the electromagnetic solenoid of the electromagnetic control valve 39 for controlling the flow rate of the hydraulic oil is changed.

As described above, at the start of the turning operation command and the raising operation command of the grain discharging auger 13, the operation speed of each actuator is slow, and the operation speed is controlled so as to increase in proportion to the ON continuation time. Therefore, when the operator manually operates the operation lever 52 (43), only a small angle moves right and left and up and down, so that the position of the discharge port at the tip of the horizontal auger cylinder 24 is stopped at a predetermined position. Since the fine adjustment is extremely easy, the operator's hand does not separate from the operation lever 52 by inadvertently moving quickly and the operation lever 52 automatically returns to the neutral position when the operator further releases the hand. In addition, the operation of turning and elevating is securely stopped, so that it is safe.

When moving a large angle range,
Since the operation time of the operation lever 52 (43) is inevitably long, the moving speed can be increased as the ON duration becomes longer to some extent, and the operation lever 52 (43) can be moved quickly. 52 ・ 43 ON ・ OF
The F operation can be repeated to reliably stop. When the turning actuator or the raising actuator is a hydraulic circuit such as a hydraulic cylinder (hydraulic motor), the hydraulic pump, which is the driving source, increases or decreases the discharge amount of pressure oil in proportion to the engine speed. The ratio of the increase in the duty ratio and the initial value of the curve 67a of the map 67 may be changed according to the detection value of the number sensor 63.

[0025]

According to the first aspect of the present invention, a turning operation command and an elevating operation of the grain discharging auger, which are performed by at least the operation instructing means provided at the distal end operating portion of the horizontal auger cylinder. At the start of the command, the operation speed of each actuator is slow, and control is performed so that the operation speed increases in proportion to the ON continuation time.・ Since it does not move up and down, fine adjustment for stopping the position of the discharge port at the tip of the horizontal auger cylinder at a predetermined position is extremely easy, and
Since the operator's hand does not separate from the operation instructing means by inadvertently moving quickly, and even if it is a remote operation with the operation unit on the driver's cab side, it does not move quickly immediately after the start of operation, It is safe because it does not collide with other objects due to instructions in the wrong direction.

The moving speed is increased as the ON duration becomes longer to some extent, so that the grain discharging auger can be moved promptly. For example, the operation can be quickly performed even at the time of remote control from the cab. To play. According to a second aspect of the present invention, in the operation control device of the grain discharge auger according to the first aspect, the control means is configured to instruct an operation of raising the horizontal auger cylinder and an operation of turning the vertical auger cylinder left and right. The auger cylinder is controlled so as to be driven in a predetermined direction for a time proportional to the ON operation time of the operation means. When the operator releases his / her hand from the operation instruction operation means, the operation is automatically stopped. Therefore, in particular, it is possible to safely execute a manual operation using the distal end operation unit that can move in a large range.

[Brief description of the drawings]

FIG. 1 is a plan view of a combine.

FIG. 2 is a left side view of the combine.

FIG. 3 is a right side view of the combine.

FIG. 4 is a skeleton diagram of a power transmission system.

FIG. 5 is a side view of a turning actuator and a raising actuator.

FIG. 6 is a perspective view of an operation panel in a cab.

FIG. 7 is a perspective view of an operation box at a distal end portion of the horizontal auger cylinder.

FIG. 8 is a functional block diagram of a control device.

FIG. 9 is a map of a drive duty ratio.

[Explanation of symbols]

 Reference Signs List 1 traveling machine body 8 grain tank 13 grain discharging auger 22 vertical auger cylinder 24 horizontal auger cylinder 28 turning actuator 34 hydraulic cylinder 39 electromagnetic control valve 41 controller 42 operation panel 43,52 operating lever 44,53 auger clutch switch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B092 AA01 AB04 CA18 CA59 CB10 2B396 JA04 JC07 KA02 KA05 KC05 KE03 LN02 LN09 LN12 LP03 LP08 LP12 LP17 LR02 LR08 LR13 MA07 MC02 MC07 MC13 PA02 PA03 PA04 PA12 QA01 QA02 Q RA10 RA23 RA25

Claims (2)

[Claims] 1. A horizontally augable vertical auger cylinder for conveying and discharging grains from a grain tank mounted on a traveling machine such as a combine machine, and a horizontal auger cylinder provided at the upper end of the vertical auger cylinder so as to be able to swing up and down. In a grain discharging auger comprising a turning actuator for turning the vertical auger cylinder around its longitudinal axis and a raising actuator for raising and lowering the horizontal auger cylinder, a tip of the horizontal auger cylinder is provided. An operation unit and an operation unit such as a driver's cab of the traveling body are provided with operation instruction operation means for instructing operation of each of the auger cylinders, and turning in accordance with an operation command from each of the operation instruction operation means. Control means for driving the actuator for raising and / or lowering the actuator, at least at the time of an operation command from the distal end operating portion of the lateral auger cylinder, operates at a low speed at the start of operation, and then gradually operates. Operation controller for a grain discharge auger and controls to increase the speed. 2. The control means drives each of the auger cylinders in a predetermined direction for a time proportional to an ON operation time of an operation instruction operation means for instructing a horizontal auger cylinder elevating operation and a vertical auger cylinder left-right turning operation. The operation control device for a grain discharging auger according to claim 1, wherein the operation is controlled so as to perform the operation.