JP2001275462A - Controlling device for controlling work clutch in longitudinally disengaged state in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify operation for carrying out on-off operation of work clutches 60 and 63 in a controlling device for controlling these work clutches 60 and 63 in longitudinally disengaged state in a general-purpose combine harvester 1. SOLUTION: In this controlling device, actuators 67 and 74 for longitudinal disengagement for operating the above work clutches 60 and 63 and work clutch switches 86 to 89 for setting on-off state of the above actuators 67 and 74 are installed in correspondence with the above work clutches 60 and 63 and a controller 85 for controlling the separately corresponding work clutches 60 and 63 so as to longitudinally disengage these clutches 60 and 63 from power by carrying out on-off operation of clutch switches 86 to 89 by these actuators 67 and 74 for longitudinal disengagement is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art In a conventional combine, each work clutch for interrupting the transmission of power from an engine to a working unit such as a pre-cutting device or a threshing unit includes a tension in the power transmission belt, A mechanical structure has been adopted in which an arm on which a tension pulley is attached is rotated so as to select looseness. In response to such a mechanical work clutch, a worker manually switches a work clutch lever connected to the arm to an ON (on) position or an OFF (off) position, thereby allowing the engine to move from the engine to the work section. (Hereinafter, this state is referred to as a power connection state), or OFF operation is performed to cut off the transmission of power from the engine to the working unit (hereinafter, this state). Is called a power cutoff state).

[0002]

However, when each of the working clutches has a mechanical structure, a certain amount of arm strength is required for operating the lever. for that reason,
When the worker is, for example, an elderly person or a woman, the switching operation of each of the work clutch levers may be burdensome, and there is room for improvement in the means for turning on and off each of the work clutches.

[0003] Further, in the conventional configuration, when an abnormal situation such as an excessive load is applied to the working unit such as the pre-cutting device and the threshing unit, the operator can take the abnormal situation. This abnormal situation is left unattended until the operator manually switches each of the working clutch levers to the OFF position, so that the working section may be broken.

In addition, the conventional mechanical ON / OFF
In the configuration of the working clutch to be performed, there is also a problem that it is not possible to automatically switch the power in accordance with the state of the working unit such as the pre-cutting device and the threshing unit.

Accordingly, an object of the present invention is to provide a work clutch disconnection control device in a combine which has solved these problems.

[0006]

In order to solve this technical problem, a work clutch disconnection control device in a combine according to claim 1 is provided with a pre-cutting device in front of a traveling body equipped with an engine. Mounted so as to be adjustable up and down, the traveling machine is provided with a threshing unit having a handling cylinder for threshing the grain culm sent from the pre-cutting device, and the work of the pre-cutting device and the threshing unit etc. A combiner provided with each work clutch for power disconnection from the engine to the section, a disconnection actuator for operating each work clutch, and an O of the respective disconnection actuator.
A work clutch switch for setting the N / OFF state is provided in correspondence with each of the work clutches, and by ON operation or OFF operation of each of the work clutch switches,
A controller is provided for controlling the corresponding working clutches to be in the power disconnection state by operating the corresponding engagement clutches with the disconnection actuator.

According to a second aspect of the present invention, in the combine control device for a work clutch in the combine according to the first aspect, when the load on each of the disconnecting actuators becomes larger than a predetermined value, The output to the actuator is stopped, the corresponding work clutch is set to the power cutoff state, and the alarm device for issuing an alarm is controlled to operate.

According to a third aspect of the present invention, there is provided a disconnection control device for a work clutch in a combine according to the first or second aspect, wherein a disengagement side detection sensor for detecting that each of the work clutches is at a power cutoff position; An input-side detection sensor for detecting that the clutch is at the power connection position is provided in correspondence with each of the work clutches, and the controller detects the input-side detection sensor when the power of the combine is input. If it is determined by the signal that at least one working clutch is in the power connection position,
The corresponding work clutch is operated by the disconnecting actuator to control the power to be in a power cutoff state, or when the power of the combine is input, all the signals are detected by the detection signal from the disconnection side detection sensor. The engine is controlled so that it can be started only when it is determined that the working clutch is in the power cutoff position.

According to a fourth aspect of the present invention, in the combine control device for a work clutch in a combine according to any one of the first to third aspects, the controller may be configured such that, in each of the work clutches, the threshing clutch for the threshing unit is in a power connection state. Only in the case of, the cutting clutch for the cutting pre-processing device among the working clutches is controlled by operating the cutting clutch corresponding thereto to enable power connection.

According to a fifth aspect of the present invention, there is provided a work clutch disconnection control device in a combine according to any one of the first to fourth aspects, wherein the work clutch switch for operating each of the disconnection actuators is used as the work clutch switch. A side switch is provided, and the controller controls the corresponding disconnection actuator to be operable only when each of the work clutch on-side switches is turned ON for a predetermined time.

[0011]

According to the first aspect of the present invention, when the operator merely presses each of the work clutch switches, the corresponding work clutch is turned on by the disconnection actuator and the power connection state is established. Or the disconnection actuator can be turned off to enter the power cutoff state, so that the work clutches are turned on and off.
Since the operation for performing the OFF operation is a one-touch operation such as a switch operation, there is an effect that intensive work is unnecessary and the operation becomes extremely simple.

According to a second aspect of the present invention, when an abnormal situation such as an excessive load is applied to the working unit such as the pre-cutting device or the threshing unit, for example, when the abnormal condition occurs, Excessive load also acts on each switching actuator. If the load on each of the switching actuators at this time is larger than a predetermined value, the output to each of the switching actuators is immediately stopped, and the corresponding work clutch is turned off and the power is cut off. Can be.

Therefore, there is an effect that the working section can be protected since an abnormal situation is not left. Also, at this time, an alarm device such as a buzzer or a lamp can be operated to notify an operator of an abnormal situation, thereby improving the safety.

According to a third aspect of the present invention, at least one of the work clutches is in a power connection position (the position of each of the work clutches in the power connection state, the same applies hereinafter) when the power of the combine is inputted. If there is, the corresponding work clutches are turned off by the disconnection actuator to be in the power cutoff state, or when the power of the combine is input, all the work clutches are in the power cutoff position ( The engine can be started only when it is at the position of each of the work clutches when the power is cut off, the same applies hereinafter).

Therefore, in any case, when the engine is started after the power of the combine is input, all the work clutches are held at the power cutoff position. Thereby, when starting the engine, the work load is not applied,
In addition, there is an effect that there is no danger that the working unit is driven at the same time when the engine is started.

According to a fourth aspect of the present invention, only when the threshing clutch (each of the work clutches for the threshing unit, the same applies hereinafter) is in the power-connected state, the cutting clutch (the front of the work clutches of the respective work clutches) is not connected. The processing device, hereinafter the same) can be turned ON by the corresponding disconnection actuator to be in a power connection state. Therefore, while the power transmission to the threshing unit is cut off, the power is not transmitted to the pre-cutting device to perform the mowing operation, and the effect of preventing clogging of the grain culm on the front end side of the threshing unit is achieved. .

According to a fifth aspect of the present invention, only when each of the working clutch on-side switches is turned ON for a predetermined time, the corresponding disconnecting actuator is driven to correspond to each of the disconnecting actuators. The working clutch can be maintained in the power-connected state. Therefore, when the worker inadvertently comes into contact with each of the work clutch on-side switches, there is an effect that each of the work clutches does not operate erroneously.

[0018]

Embodiments of the present invention will be described below with reference to the drawings (FIGS. 1 to 13).

In the general-purpose combiner 1 according to the present invention, a mowing pretreatment device 4 is mounted on the front surface of a traveling machine body 3 supported by a pair of right and left traveling crawlers 2 so as to be adjustable in elevation. In addition, an engine 5 and a threshing unit 6 for threshing the stalks sent from the pre-cutting device 4
And a sorting unit 7 for performing swing sorting and wind sorting.

As shown in FIGS. 1 and 2, a cutting blade 9 is provided horizontally below the front end of a horizontally long, bucket-shaped platform 8 in the pre-cutting device 4.
A scraping reel 10 is disposed above the front side of the vehicle 1 via a pair of left and right elevating links 11, 11. The grain stalks cut by the cutting blade 9 are scraped into the platform 8. In the platform 8, a transverse feed auger 12 is provided horizontally.
By rotating the transverse feed auger 12,
The cut culm is accumulated at a position slightly to the left from the left and right center of the platform 8 in the traveling direction. At the front ends on both sides of the platform 8, weeding bodies 15, 15 are provided.

The rear end of the substantially rectangular cylindrical feeder house 13 extending rearward from the grain culm accumulation portion of the platform 8 communicates with the grain culm input port 20 on the front end side of the threshing unit 6 and has a traveling machine body 3. Are supported so as to be able to move up and down freely. Then, by connecting the front end of the traveling machine body 3 and the lower surface of the feeder house 13 with a hydraulic cylinder 95 (see FIG. 12), the pre-cutting device 4 is configured to be able to adjust up and down. In addition, in front of the grain stalk input port 20,
A cylindrical beater 21 having a rotation axis in the left-right horizontal direction is provided (see FIGS. 1 and 3), and the accumulated grain stalks are transferred to the beater 21 by the conveyor 14 in the feeder house 13. After being conveyed to the front end side, it is forcibly conveyed by the beater 21 to the threshing unit 6 through the grain stalk input port 20.

Above the feeder house 13 and at the front end of the traveling machine body 3, an operation panel 19 provided with a driver's seat 17, a steering round handle 18, and various levers and switches.
Is disposed in the cockpit 16 (FIGS. 1, 2 and 4).
reference). The cockpit 16 is located at a position where visibility is good so that the inside of the platform 8 and the scraping reel 10 can be seen, and it is possible to get on and off from both right and left sides.

The threshing section 6 in the traveling machine body 3 includes
As shown in FIG. 3, the first handling room 22 and the second handling room 23 are adjacent to each other, and the handling cylinders 24 and 25 in the two handling rooms 22 and 23 are arranged so that their rotation axes are parallel. are doing. That is, the rotor-like first handling cylinder 24 is provided in the first handling chamber 22 near the front side of the traveling machine body 3, and the rotor-like second handling cylinder 25 is also provided in the second handling chamber 23 on the rear side. Are arranged so as to extend horizontally in the horizontal direction with respect to the traveling direction of the general-purpose combine 1. A screw blade 24 having a plurality of teeth (not shown) is provided on the outer peripheral surface of each of the handling cylinders 24 and 25.
a and 25a are spirally wound and projected, respectively.

Arc-shaped receiving nets 26 and 27 are provided below the handling cylinders 24 and 25, respectively, and the screw blades 24a and
25a, and upper covers 28, 29 are disposed above the handling cylinders 24, 25, respectively.
Each handling room 22, 23 is configured. Also, the first receiving net 26 is inclined so as to form a gentle arc from front to back and back to back.
A communication port 26a is formed on the right rear portion of the second handling cylinder 25 so as to extend in a tangential direction of the upper outer peripheral surface of the second handling cylinder 25. The rear end of the communication port 26a extends to near the front end of the rotation trajectory of the second handling drum 25. An outlet 27a is provided at the left rear portion of the second receiving net 27 (see FIG. 3).

As shown in FIG. 2, a plate-like feed blade 24 protruding in the radial direction of the first handling cylinder 24 is provided on a portion of the outer peripheral surface of the first handling cylinder 24 which approaches the communication port 26a.
b, 24b... are similarly formed at a portion of the outer peripheral surface of the second handling cylinder 25 which approaches the discharge port 27a.
Plate-like feed blade 25 protruding in the radial direction of the second handling cylinder 25
b, 25b...

A guide plate 30 is provided on the lower rear side of the outlet 27a so as to extend rearward. Above the rear upper side of the guide plate 30, a drainage forcibly sending the culm to the rear is provided. A culm beater 31 is provided (see FIGS. 1 to 3). The culm beater 31 is attached to each of the handling cylinders 2.
The outer diameter is smaller than the outer diameter of each of the handling cylinders 24 and 25, and the outer diameter of each of the handling cylinders 24 and 25 is set to be higher than that of the second handling cylinder 25. By making the speed equal to or higher than 25, the ability to send out the culm backwards is enhanced.

In this configuration, the pulleys and the belt are transmitted from the output shaft of the engine 5 so that each of the handling cylinders 24,
When 25 rotates counterclockwise in FIGS. 1 and 3,
The grain stalks transported from the feeder house 13 to the grain stalk input port 20 are drawn into the first receiving net 26 in the first handling room 22 and sent on the first receiving net 26 in a direction approaching the communication port 26a. The threshing process is performed. Next, the first handling cylinder 24
The untreated grain culm discharged at the feed blades 24b, 24b,... Is drawn into the second receiving net 27 in the second handling chamber 23 through the communication port 26a. While being fed in a direction approaching the discharge port 27a.

The thresh after threshing is discharged from the discharge port 27a by the feed blades 25b of the second handling cylinder 25,
The culm beater 31 is pulled on the guide plate 30 by rotating counterclockwise in FIGS. Next, after the culm is taken into the suction fan 32 arranged behind the culm beater 31, the chipper type spreader 33 is laid across the rear end of the traveling machine body 3 over the entire left and right width. And is cut by a plurality of hatchet-shaped blades of the spreader 33 and discharged to the field from the rear end of the traveling machine body 3. The grain mixed with the straw that has leaked from each of the receiving nets 26 and 27 is dropped and sorted into a sorting unit 7 described below.

Note that the upper inner peripheral surface of each of the upper covers 28, 29 which is formed horizontally is provided with a dust valve 34, 34.
Are pivotally supported on the upper portions of the upper covers 28, 29 so as to be vertically rotatable at appropriate intervals in the left-right horizontal direction, and by rotating the dust feed valves 34, 34, The time during which the cereal stem moves in each of the handling cylinders 24 and 25 is adjusted according to the type of the cereal stem and the state of the cereal stem.

The sorting unit 7 disposed below the threshing unit 6 includes:
As shown in FIGS. 1 and 3, a swing body 36 that swings integrally with the traveling machine body 3 in the front-rear direction, a Karamin fan 40 that generates a sorting wind, and a first conveyor that conveys the sorted first thing in the left-right direction. 41 and a second conveyor 42 for conveying a second product
And the like. As shown in FIG. 1, the first conveyor 41 and the second conveyor 42 are provided laterally above the rear side of the traveling crawlers 2, 2 in a side view, and
1 and a reduction conveyor 44 and a traveling crawler 2, which are provided so as to communicate with the left end of a bucket type frying conveyor 43 and a second conveyor 42 which are arranged in an upright manner in communication with the left end.
2 are configured not to interfere with each other. In addition, below the first conveyor 41 and the second conveyor 42, receiving troughs 35a and 35b for receiving grains selected by the Glen pan 36a and the chaff sheave 39 described later are provided.

The swing body 36 is arranged from below the front end of the first handling cylinder 24 to the rear end of the sorting section 7 and is swingably supported by a swing link mechanism 37. In the front part of the swinging body 36, a Glen pan 36a for receiving a grain stem that has fallen below each of the handling cylinders 24 and 25 is formed. As shown in FIG. 3, the grain pan 36 a is formed in a wave shape when viewed from the side, and the grain stem that has fallen on the grain pan 36 a is conveyed backward by the swing of the swing body 36.

At the rear end of the grain pan 36a, a screen 3
8 and the swinging body 36
A chaff sheave 39 composed of a plurality of chaff fins horizontally extending in the left-right horizontal direction of the swing body 36 is provided to the rear end of the swing body 36. A drop port 36b is provided on the bottom surface of the swinging body 36 below the chaff sheave 39, and is covered with a crimp net (not shown). A Karino fan 40 is provided laterally below the front and rear middle part of the swinging body 36 in the Glen pan 36a.

In this configuration, when the Karino fan 40 and the swinging main body 36 are driven by the pulley and the belt from the output shaft of the engine 5, the grains mixed with the straw dropped from the receiving nets 26 and 27 are By the Glen pan 36a and the chaff sheave 39, the waste is separated into straw and grains mixed with fine dust, and the waste is discharged from the rear end of the traveling machine body 3 to the field. The grains mixed with the fine dust are separated into the grains and the fine dust by the sorting wind from the Karino fan 40 flowing below the Glen pan 36a and the chaff sheave 39, and the fine dust is separated into the traveling machine 3
Is discharged from the rear end into the field.

Of the selected grains, those collected in the gutter 35b on the second conveyor 42 side are returned to the first handling chamber 22 via the second conveyor 42 and the reduction conveyor 44. The grains collected in the receiving gutter 35a on the side of the first conveyor 41 are accumulated in the Glen tank 45 provided on the threshing unit 6 via the first conveyor 41 and the lifting conveyor 43.
The Glen tank 45 is provided with a leveling disk 46 and a guide plate 47 for uniformly dispersing grains. Reference numeral 48 denotes a discharge auger for discharging the grains stored in the Glen tank 30.

Next, a description will be given of the power transmission system of the general-purpose combiner 1 and the configuration of each work clutch for power disconnection.

As shown in FIG. 5, the rotating shaft 4 of the engine 5
Double pulleys 50 and 51 are fixed to both ends of 9. One of the outputs from the engine 5 is a double pulley 50
Through a screw conveyor (not shown) in the discharge auger 48 and a radiator fan 52.
The other output from the engine 5 is branched from the twin pulley 51 to the threshing input shaft 54, and the threshing unit 6 and the sorting unit 7, that is, each of the handling cylinders 24 and 25 and the leveling disk 4
6. Power is transmitted to the culm beater 31, the first conveyor 41, the fry conveyor 43, the second conveyor 42, the reduction conveyor 44, the swing link mechanism 37, the suction fan 32 and the like.

A triple pulley 53 is fixedly provided at an intermediate portion in the longitudinal direction of the rotary shaft 49 on the double pulley 51 side. As a result, the other output from the engine 5 is transmitted from the triple pulley 53 to the drive shaft 55 of the hydraulic pump hydraulic motor type (HST type) traveling drive unit 55 capable of performing a speed change operation for traveling.
The power is also branched to 6 and transmitted. Further, the power transmitted from the engine 5 to the drive shaft 56 is transmitted to the respective parts of the pre-cutting device 4, that is, the transport conveyor 1, via a harvesting transmission pulley 57 fixedly provided in the middle of the drive shaft 56 in the longitudinal direction.
4, transmitted to the lateral feed auger 12, the cutting blade 9, the scraping reel 10, the beater 21, and the like.

Between one of the two pulleys 51 of the rotary shaft 48 and a pulley 58 fixed to the threshing input shaft 54, the tension of the belt 59 wound around the two pulleys 51, 58 is tensioned. A threshing clutch 60 (for each of the work clutches, for the threshing unit 6, the same applies hereinafter) is provided to cut off the power transmitted from the engine 5 to the rotating shaft 48 by relaxing (see FIG. 6 and FIG. 6). (See FIG. 7).

The cutting transmission pulley 5 of the drive shaft 56
Similarly, between the pulley 61 and the pulley 61 interlocked with the mowing transmission pulley 57 by the belt 62, the tension transmitted from the engine 5 to the drive shaft 56 is transferred by tensioning and relaxing the tension of the belt 62. A cutting clutch 63 for disconnecting the clutch (the one for each of the working clutches for the pre-cutting device 4, the same applies hereinafter) is provided (see FIG. 8).

FIGS. 6 and 7 show the structure of the threshing clutch 60. FIG. The threshing clutch 60 is connected to the drive shaft 56.
A substantially L-shaped tension arm 65 rotatably attached to a shaft 64 disposed at an upper position of the belt 59 so as to be parallel to the belt 59; A tension pulley 66 capable of abutting on the outer periphery of the belt 59; and a threshing clutch motor 67 disposed above the belt 59 as a disconnection actuator
Rotating lever 69 rotatably mounted on the motor shaft 68
And an extendable connecting bar 70 connecting the rotating lever 69 and the tension arm 65. The threshing clutch motor 67, which is rotatable in the forward and reverse directions, has a threshing cut-side limit switch 71 as a cut-side detection sensor that comes into contact with the lower surface of the rotary lever 69 in a two-dot chain line state (power cutoff state) in FIG. And an entry-side limit switch 72 as a threshing entry-side detection sensor that contacts the lower surface of the rotating lever 69 in the solid line state (power connection state) in FIG. 6.

In this configuration, as shown by the two-dot chain line in FIG. 6, the motor shaft 68 of the threshing clutch motor 67 is
When the tension arm 65 is pressed through the connecting bar 70 to rotate the tension arm 65 upward and the tension pulley 66 is separated from the belt 59, the belt 59 is loosened, and the engine is rotated. 5 is cut off (hereinafter, this state is referred to as a power cutoff state). Conversely, as shown by the solid line in FIG. 6, the motor shaft 68 of the threshing clutch motor 67 rotates clockwise, pulls the tension arm 65 via the connection bar 70, and rotates the tension arm 65 downward. When the tension pulley 66 presses the belt 59, the belt 59 is tensioned, and power from the engine 5 is transmitted (hereinafter, this state is referred to as a power connection state).

FIG. 8 shows the configuration of the reaping clutch 63. A cutting clutch motor 74 as a cut-off actuator is disposed on a support member 73 disposed at an upper position of the belt 61, and a rotating disk 75 is provided on the cutting clutch motor 74 so as to be rotatable. I have. A tension spring 76 is mounted between the pin 75a projecting from the rotating disk 75 and the pin 73a projecting from the support member 73, and the pin 75a on the rotating disk 75 is pulled. I'm going. On the other hand, a cylindrical member 77 connected to and fixed to a support member (not shown) is inserted into the support shaft of the pulley 61 linked to the mowing transmission pulley 57 by the belt 62, and the rotary support fixed to the cylindrical member 77 by welding. A tension arm 79 having a tension pulley 80 that can contact the belt 62 is rotatably attached to the member 78.

One end of a clutch spring 81 is hooked on a pin 79a protruding from the tension arm 79, and one end of a clutch wire 82 is hooked on a pin 75a protruding on the rotating disk 75. . The other end of the clutch spring 81 and the other end of the clutch wire 82 are connected. The cutting member side limit switch 83 as a cutting side detection sensor for detecting the rotation position of the pin 75a on the rotation disk 75 in the two-dot chain line state (power cutoff state) in FIG.
And a reaping-side limit switch 84 as an input-side detection sensor for detecting the rotation position of the pin 75a on the rotation disk 75 in the solid line state (power connection state) in FIG. 6 (see FIG. 9). ).

In this configuration, as shown by a two-dot chain line in FIG.
Is rotated, the clutch wire 82 and the clutch spring 81
When the tension arm 79 is rotated downward and the tension pulley 80 is separated from the belt 62, the belt 62 is loosened and the power is cut off. Conversely, as shown by the solid line in FIG. 8, the rotating disc 75 is rotated by the mowing clutch motor 74, the clutch wire 82 and the clutch spring 81 are pulled up, and the tension arm 79 is rotated upward to rotate the tension pulley 80. When the belt comes into contact with the belt 62 so as to press the belt 62, the belt 62 is tensioned to be in a power connection state.

Next, a configuration for controlling the disconnection of the threshing clutch 60 and the cutting clutch 63 will be described. FIG.
Shows a functional block diagram of an electronic controller 85 such as a microcomputer that executes these controls. Although not shown, a central processing unit (CPU) for executing various arithmetic processes and controls and a control program are stored. A read-only memory (ROM), a readable and writable memory (RAM) for temporarily storing various detected values and data, a non-volatile memory for holding stored data even when the control device is turned off, and a timer function. clock,
It has an interface and a bus.

On the input side of the electronic controller 85, a threshing clutch off-side switch 86 for setting the threshing clutch motor 67 to the OFF state, a threshing clutch on-side switch 87 for setting the threshing clutch motor 67 to the ON state, The cutting clutch off-side switch 88 for setting the cutting clutch motor 74 to the OFF state, the cutting clutch on-side switch 89 for setting the same to the ON state, the threshing off-side limit switch 71 and the threshing on-side limit The input signal from the switch 72, the input signal from the cutting off limit switch 83 and the cutting limit switch 84, and the input signal from the threshing clutch motor 67 and the cutting clutch motor 74 are connected to each other. I have.

The output side of the electronic controller 85 is connected to output signals to the threshing clutch motor 67 and the mowing clutch motor 74 and an alarm device 90 such as a buzzer or a lamp for issuing an alarm. are doing.

The above-described threshing clutch off-side switch 86,
The threshing clutch on-side switch 87, the reaping clutch off-side switch 88, and the reaping clutch on-side switch 89 are arranged on the operation panel 19 located on the left side of the driver's seat 17 in the cockpit 16 as shown in FIG. Each of the switches 86 to 89 is a so-called push switch that outputs one ON pulse signal by one depression of each switch, and is a non-lock type.

In this embodiment, when the operator enters the cockpit 16 and turns on the power of the general-purpose combiner 1, before the engine 5 is started, the position of the threshing clutch 60 is set to the above-described threshing off-side limit switch 71. The position of the cutting clutch 63 is detected by the cutting limit switch 83 and the cutting limit switch 84, respectively.

Further, in this embodiment, the threshing clutch 6
Either one or both of 0 and the reaping clutch 63 are in the power connection position (the position of the threshing clutch 60 or the reaping clutch 63 when in the power connection state, the same applies hereinafter).
In such a case, the output to the corresponding work clutch motor (threshing clutch motor 67 or reaping clutch motor 74) is stopped or the power of the general-purpose combiner 1 is input so that the work clutch is in the power cutoff state. When the threshing clutch 60 and the reaping clutch 63 are both in the power cutoff position (when the threshing clutch 6
0 or the position of the reaping clutch 63, the same applies hereinafter) so that the engine 5 can be started.

Therefore, when the engine 5 is started after the power of the general-purpose combiner 1 is input, both the threshing clutch 60 and the mowing clutch 63 are held at the power cutoff position. Thereby, at the same time when the engine 5 is started, the power is transmitted to the pre-cutting device 4 and the threshing unit 6 and the like, so that there is no danger of driving these components.

Next, the control mode of the threshing clutch 60 and the reaping clutch 63 by the electronic controller 85 will be described with reference to the flowchart of FIG.

First, following the start, it is determined whether or not the time X during which the threshing clutch input side switch 87 is pressed is longer than a predetermined time T1 (S1). When the pressing time X is equal to or shorter than the predetermined time T1 (S1: NO), the threshing clutch on-side switch 87 has not been pressed, or the predetermined time T1 has not elapsed even if it has been pressed. go. When the pressing time X is longer than the predetermined time T1 (S1: YES), the predetermined time T1 has elapsed while the threshing clutch on-side switch 87 has been pressed down,
Since the worker is only performing the threshing operation or the harvesting / threshing operation, the threshing clutch motor 67 is driven to bring the threshing clutch 60 into the power-connected state (S2), and threshing is performed by the rotation lever 69 of the threshing clutch 60. The ON limit switch 72 is turned ON (S3).

Next, the load Y of the threshing clutch motor 67
Is greater than or equal to a predetermined value P1 (S4). When the load Y of the threshing clutch motor 67 is larger than the predetermined value P1 (S4: YES), an abnormal situation such as an excessive load acting on the threshing unit 6 or the like has occurred. The threshing clutch 60 is stopped and the power is cut off (S5), and the turning lever 69 of the threshing clutch 60 turns on the threshing off-side limit switch 71 (S6). Then, an alarm device 90 such as a buzzer or a lamp for issuing an alarm is activated (S7), and the process returns.

In step S4, when the load Y of the threshing clutch motor 67 is equal to or less than the predetermined value P1 (S4: N
O), it is determined whether or not the threshing entry-side limit switch 72 is ON (S9). When the threshing inlet limit switch 72 is in the OFF state (S9: NO), the threshing clutch 6
0 is in the power shut-off position, so that step S13 described later is performed.
Go. When the threshing entrance limit switch 72 is in the ON state (S9: YES), the threshing clutch 60 is at the power connection position.
It is determined whether or not the time Z during which the button 9 is pressed is longer than the predetermined time T2 (S10). Pressing time Z is a predetermined time T2
In the following cases (S10: NO), the process goes to step S13, which will be described later, because the reaping clutch on-side switch 89 has not been pressed or the predetermined time T2 has not elapsed even if it was pressed.

If the pressing time Z is longer than the predetermined time T2 (S10: YES), the switch 8 on the cutting clutch input side is set.
Since the predetermined time T2 has elapsed while the operator 9 is pressed down, and the worker is about to perform mowing and threshing work, the mowing clutch motor 74 is driven to bring the mowing clutch 63 into a power connection state (S11). The cutting-in limit switch 84 is turned ON by the pin 75a of the rotating disk 75 in the clutch 60 (S12).

Next, the load W of the mowing clutch motor 74
Is larger than a predetermined value P2 (S13).
When the load W of the reaping clutch motor 74 is larger than the predetermined value P2 (S13: YES), an abnormal situation such as an excessive load acting on the reaping pre-processing device 4 has occurred.
The output to the reaping clutch motor 74 is stopped to put the reaping clutch 63 in the power cutoff state (S14).
The cutting limit switch 83 is turned ON by the pin 75a of the rotating disk 75 at 0 (S15). Then, an alarm device 90 such as a buzzer or a lamp for issuing an alarm is operated (S16), and the process returns.

In step S13, when the load W of the mowing clutch motor 74 is equal to or less than the predetermined value P2 (S1).
3: NO), it is determined whether or not the mowing clutch off-side switch 88 is ON (S9). The state in which the cutting clutch off-side switch 88 is ON (S17: YES) means that the operator presses the cutting clutch off-side switch 88 to stop the reaping operation.
Output is stopped, the mowing clutch 63 is turned off (S18), the mowing off-side limit switch 83 is turned on by the pin 75a of the rotating disk 75 of the mowing clutch 60 (S19), and the process returns.

In step S17, when the cutting clutch disengagement side switch 88 is in the OFF state (S17: N
O), it is determined whether or not the threshing clutch off-side switch 86 is ON (S20). Threshing clutch off-side switch 86
Is ON (S20: YES), the operator depresses the threshing clutch disengagement side switch 86 to stop the mowing / threshing work. First, the output to the mowing clutch motor 74 is stopped. The cutting clutch 63 is turned off (S21), and the cut off limit switch 83 is turned ON by the pin 75a of the rotating disk 75 of the cutting clutch 60 (S22). Thereafter, the output to the threshing clutch motor 67 is stopped to put the threshing clutch 60 in the power cutoff state (S23), and the threshing off-side limit switch 71 is turned on by the rotation lever 69 of the threshing clutch 60 (S24). To return. The reason why the power transmission to the threshing clutch 63 is cut off after the power transmission to the cutting clutch 74 is cut off is that the cut culm remains in the pre-cutting processing device 4 first. This is because the threshing unit 6 is set in a power cutoff state so as to prevent clogging of the grain stalk at the front end side of the threshing unit 6. When the threshing clutch off-side switch 86 is in the OFF state (S
20: NO), and returns to step S1.

The data relating to the predetermined times T1 and T2, the predetermined value P1 at the load of the threshing clutch motor 67, and the predetermined value P2 at the load of the mowing clutch motor 74 are stored in advance in the ROM.

With the above-described control, first, when the operator depresses the threshing clutch off-side switch 86 or the threshing clutch on-side switch 87, the threshing clutch 60 is turned on by the threshing clutch motor 67 as a disconnection actuator.
The power can be cut off by the FF operation or turned on by the threshing clutch motor 67 to make the power connected. Similarly, when the operator depresses the cutting clutch off-side switch 88 or the cutting clutch on-side switch 89, the cutting clutch 63 is turned off by the cutting clutch motor 74 as a disconnecting actuator, and the power is cut off. The reaping clutch motor 74 can be turned ON to be in a power connection state. Therefore, the operation for turning on and off the threshing clutch 60 and the reaping clutch 63 is extremely simplified.

Further, for example, when an abnormal situation occurs such as an excessive load acting on the pre-cutting device 4 and the threshing unit 6, the threshing clutch motor 67 and the reaping clutch motor 74 are excessively configured. If the load on the threshing clutch motor 67 at that time is greater than the predetermined value P1 or the load on the reaping clutch motor 74 is greater than the predetermined value P2, the threshing clutch motor 67 or the reaping is immediately performed. The output to the clutch motor 74 stops,
The threshing clutch 60 or the reaping clutch 63 can be in the power cutoff state. Therefore, there is an effect that the pre-cutting device 4 and the threshing unit 6 can be protected without leaving an abnormal situation. Further, at this time, the alarm device 90 such as a buzzer or a lamp can be operated to notify an operator of an abnormal situation, and the effect of improving safety can be achieved.

Further, only when the threshing clutch 60 is in the power connection state, the cutting clutch 63 is turned ON by the cutting clutch motor 74 to be in the power connection state, so that the transmission of power to the threshing unit 6 is interrupted. This eliminates the need to transmit power to the pre-cutting device 4 to perform the cutting operation, and has the effect of preventing the culm from clogging on the front end side of the threshing unit 6.

Further, the threshing clutch input side switch 8
7, the threshing clutch motor 67 can be driven to keep the threshing clutch 60 in the power-connected state only when the ON operation is continuously performed for the predetermined time T1.
Only when the cutting clutch input side switch 87 is continuously turned ON for a predetermined time T2, the cutting clutch motor 74
Can be driven to maintain the mowing clutch 63 in the power-connected state. Therefore, the worker carelessly enters the threshing clutch on-side switch 87 or the reaping clutch on-side switch 8.
9, the threshing clutch 60 or the reaping clutch 63 is prevented from erroneously operating.

By the way, the general-purpose combine 1 of the present embodiment
Then, when the pre-cutting device 4 is lowered to a predetermined cutting height (the height of the pre-cutting device 4 when cutting a culm planted in a field, the same applies hereinafter) during cutting and threshing work, When the mowing clutch 63 is brought into the power-on state and the mowing pre-processing device 4 is raised above the mowing height, the automatic clutch control of automatically setting the mowing clutch 63 to the power cutoff state is executed. The mowing and threshing work of the plant is executed quickly. Hereinafter, an embodiment of the automatic clutch control will be described.

As shown in FIGS. 4 and 11, the engine 5
Main transmission lever 91 of the transmission for shifting the power from the vehicle
Is located to the left of the driver's seat 17 in the cockpit 16,
On the side surface of the grip portion of the main shift lever 91, an auto lift switch 9 for forcibly raising the pre-cutting device 4 to a predetermined height high enough not to come into contact with a ridge or the like at a ridge or the like.
2 and an automatic set switch 93 for lowering the pre-cutting device 4 so as to be positioned at a predetermined cutting height.

FIG. 12 is a functional block diagram of an electronic controller 94 such as a microcomputer for executing an automatic clutch control. Although not shown, a central processing unit (CP) for executing various arithmetic processes and controls is shown in FIG.
U), a read-only memory (ROM) for storing a control program, a random-access memory (RAM) for temporarily storing various detected values and data, and the like, and retains stored data even when the control device is turned off. It has a nonvolatile memory, a clock as a timer function, an interface, a bus, and the like.

On the input side of the electronic controller 94, the input signal from the threshing entrance side limit switch 72, the automatic lift switch 92, the automatic set switch 93, and the height position of the pre-cutting device 4 are provided. Is connected to an input signal from the cutting height sensor 96 for detecting the cutoff. Here, the cutting height sensor 96 may detect the height of the pre-cutting device 4 with respect to the field scene,
The relative height of the pre-cutting device 4 with respect to the reference height of the traveling body 3 may be detected. Further, these two may be used in combination.

An output side of the electronic controller 94 is provided with an ascending electromagnetic solenoid 97 in an electromagnetic hydraulic switching valve for operating the hydraulic cylinder 95 to elevate the cutting pretreatment device 4, and also for lowering the same. The descending electromagnetic solenoid 98 is connected to an output signal to the mowing clutch motor 74, respectively. Here, the auto lift switch 92 and the auto set switch 93
This is a non-locking type push switch which outputs one ON pulse signal when each switch is pressed once.

Next, the mode of the automatic clutch control by the electronic controller 94 will be described with reference to the flowchart of FIG.

First, following the start, it is determined whether or not the threshing entry-side limit switch 72 is ON (R1). When the threshing entrance limit switch 72 is in the OFF state (R1: NO), the routine returns because the threshing clutch 60 is in the non-agricultural operation state in the power cutoff position. When the threshing inlet limit switch 72 is ON (R1: YE
S) Since the threshing clutch 60 is in the power connection position, it is then determined whether or not the auto lift switch 92 is in the ON state (R2). When the auto-lift switch 92 is ON (R2: YES), if the pre-cutting device 4 is positioned at a predetermined cutting height, the pre-cutting device 4 is driven by the hydraulic cylinder 95 to perform predetermined cutting. Raise it to a height or more (R3). After the predetermined time T3 has elapsed, the output to the reaping clutch motor 74 is stopped and the reaping clutch 6
3 is turned off (R4), the cut-off limit switch 83 is turned ON by the pin 75a of the rotary disc 75 of the cutting clutch 60 (R5), and the process returns. Here, whether or not the pre-cutting device 4 is positioned at a predetermined cutting height is determined based on detection information of the cutting height sensor 96.

With this control, when the operator presses the automatic lift switch 92 during the mowing and threshing work, the mowing pre-processing device 4 is raised to a predetermined mowing height or higher, and then the mowing clutch motor 74 is turned on. Since the output can be stopped and the mowing clutch 63 can be in the power cutoff state,
The operation of the mowing operation is extremely simple.

The cutting pre-processing device 4 is connected to the hydraulic cylinder 9
5 to a predetermined time T
After the elapse of 3 hours, the mowing clutch 63 is set to the power cutoff state, so that even if the harvested culm remains in the mowing pre-processing device 4 which has been raised to a predetermined mowing height or higher, the mowing is performed for a predetermined time T3. During this time, the cutting clutch 63 is in the power-connected state, so that the grain culm is conveyed to the threshing unit 6 during that time, and the grain culm does not remain in the pre-cutting device 4.

On the other hand, in step R2, when the auto lift switch 92 is in the OFF state (R2: N
O) Then, it is determined whether or not the time V during which the automatic set switch 93 is pressed is longer than a predetermined time T4 (R6). When the pressing time V is equal to or shorter than the predetermined time T3 (R6: NO), the process returns because the auto-set switch 93 has not been pressed, or the predetermined time T4 has not elapsed even if it has been pressed.

When the pressing time V is longer than the predetermined time T4 (R6: YES), the predetermined time T4 has elapsed while the auto-set switch 93 has been pressed, and the operator lowers the pre-cutting device to a predetermined height. Because the mowing / threshing work is going to be performed,
Is higher than the predetermined cutting height, the cutting pre-processing device 4 is lowered to the predetermined cutting height by driving the hydraulic cylinder 95 (R7). And the reaping clutch motor 7
4 to bring the cutting clutch 63 into the power connection state (R8), and the rotating disc 75 of the cutting clutch 60 is rotated.
Turn on the cutting side limit switch 84 with the pin 75a
It activates (R9) and then returns. still,
Also here, whether or not the pre-cutting device 4 is located at a predetermined cutting height is determined based on the detection information of the cutting height sensor 96.

With this control, the operator sets the auto-set switch 93 to the predetermined time T during the harvesting and threshing work.
When only the button 4 is pressed, the mowing pre-processing device 4 is lowered to a predetermined mowing height, and then the mowing clutch motor 74 is driven to bring the mowing clutch 63 into the power-connected state. Operation becomes extremely simple.

Also, only when the auto-set switch 93 is pressed for a predetermined time T4, the mowing pretreatment device 4 can be lowered to the predetermined mowing height, and then the mowing clutch 63 can be held in the power-connected state. If the operator accidentally touches the auto-set switch 93, the cutting pre-processing device 4 and the cutting clutch 63 are prevented from erroneously operating. Note that the electronic controller 94 and the electronic controller 85 described above may be integrated.

The present invention can be applied not only to the general-purpose combine which can thresh after cutting rice, wheat, soybeans, etc. over the entire width of the traveling machine body as shown in the embodiment, but also to a self-propelled self-removable combine. Nor.

[Brief description of the drawings]

FIG. 1 is a side view of a general-purpose combiner.

FIG. 2 is a plan view of a general-purpose combine.

FIG. 3 is a side sectional view of a threshing unit and a sorting unit.

FIG. 4 is a schematic plan view of a control unit.

FIG. 5 is a diagram illustrating a power transmission path of a general-purpose combine.

FIG. 6 is a side view showing an operation state of a threshing clutch.

FIG. 7 is a plan view showing the operating state of the threshing clutch.

FIG. 8 is a side view showing an operation state of the reaping clutch.

FIG. 9 is a functional block diagram of an electronic controller for executing a work clutch disconnection control.

FIG. 10 is a flowchart of work clutch disconnection control.

FIG. 11 is a schematic perspective view of a main shift lever in a control section.

FIG. 12 is a functional block diagram of an electronic controller for executing an automatic clutch control.

FIG. 13 is a flowchart of an automatic clutch control.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 General-purpose combine 3 Running body 4 Cutting pre-processing device 5 Engine 6 Threshing part 7 Sorting part 16 Control part 19 Operation panel 49 Rotating shaft 54 Threshing input shaft 56 Drive shaft 60 Threshing clutch 63 Cutting clutch 65, 79 Tension arm 66, 80 Tension pulley 67 Threshing clutch motor 71 Threshing off-side limit switch 72 Threshing entry-side limit switch 74 Cutting clutch motor 75 Rotating disk 81 Clutch spring 82 Clutch wire 83 Cutting off-side limit switch 84 Reaping-side limit switch 85 Electronic controller 86 Threshing Clutch off-side switch 87 threshing clutch on-side switch 88 reaping clutch off-side switch 89 reaping clutch on-side switch 90 alarm device 91 main transmission lever 92 auto lift switch 93 auto set switch

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2B074 AA05 AB01 AC02 AD03 AD07 AF02 AG02 BA18 CA01 CE01 DA01 DA02 DA06 DB03 DD01 DD02 DE02 EA03 EA09 EA14 EB04 EC01 ED01 EE01 2B076 AA04 BA07 DB06 DC03 EC07 EC23 ED13 ED18 ED18 ED19

Claims (5)

[Claims] 1. In front of a traveling body equipped with an engine,
The harvesting pre-processing device is mounted so as to be able to move up and down, and the traveling machine body includes a threshing unit having a handling cylinder for threshing the grain culm sent from the cutting pre-processing device, the cutting pre-processing device and the A combine comprising: a work clutch for power disconnection from the engine to a work unit such as a threshing unit; and a disconnection actuator for operating the work clutch, and an ON / OFF state of the disconnection actuator. And a work clutch switch for setting each of the work clutches is provided in correspondence with each of the work clutches, and the corresponding work clutch is operated by the disconnection actuator by an ON operation or an OFF operation of each of the work clutch switches. Disconnect control of a work clutch in a combine, which is provided with a controller for controlling a power disconnection state apparatus. 2. The controller according to claim 1, wherein when the load on each of the disconnecting actuators exceeds a predetermined value, the controller stops the output to each of the disconnecting actuators and puts the corresponding work clutch into a power cutoff state. The control device according to claim 1, wherein the control device is controlled to activate an alarm device that issues an alarm. 3. An on-side detection sensor for detecting that each of the work clutches is at a power cutoff position and an on-side detection sensor for detecting that each of the work clutches is at a power connection position. When the controller determines that at least one work clutch is in the power connection position based on a detection signal from the input side detection sensor when the power of the combine is input, The work clutch is actuated by the disconnecting actuator so as to be in a power cutoff state, or all work is performed by a detection signal from the disconnection side detection sensor when the power of the combine is input. The engine according to claim 1, wherein the engine is started only when it is determined that the clutch is at the power cutoff position. 3. A work clutch disconnection control device in the combine according to 2. 4. The controller according to claim 1, further comprising, when the threshing clutch for the threshing unit among the respective working clutches is in a power-connected state, disconnects a cutting clutch corresponding to the cutting pre-processing device among the respective working clutches. The disconnection control device for a work clutch in a combine according to any one of claims 1 to 3, wherein the device is controlled to be operated by an actuator for use so as to enable power connection. 5. A work clutch on-side switch for operating each of the disconnecting actuators is provided as the work clutch switch, and the controller turns on each of the work clutch on-side switches for a predetermined time. 2. The control device according to claim 1, wherein the switching actuators are controlled so as to be operable.
The control device for disconnecting a work clutch in a combine according to any one of claims 1 to 4. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work clutch disconnection control device in a combine.