JP2000139177A - Engine stop controller in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce carrying seed of a feed chain or stop carrying of the feed chain interlockingly with operation of an emergent engine stop switch and a switch for detecting clogging of waste straws. SOLUTION: An emergent engine stop switch 50 is provided so as to be operatable in emergency at upper part of a cylinder cover 31 for housing a threshing drum 28 in a threshing part 20 and a switch 54 for detecting clogging of waste straws is provided on the base end side of a waste straw chain 36 and when at least either one of the emergent engine stop switch 50 or the switch 54 for detecting clogging of waste straws is turned on, a feed chain driving motor 58 is decelerated or stopped interlockingly with the above operation and carrying speed of the feed chain 26 is decelerated or stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for threshing grain culms supplied by a feed chain and transporting the straw after threshing to a waste straw, and more particularly, in conjunction with the operation of emergency operation means and the like. The present invention relates to an engine stop control device in a combine for reducing or stopping the feed chain transport speed.

[0002]

2. Description of the Related Art A combiner operates when a straw is clogged or when a paddy tank overflows, and an engine stop signal is output. An engine stop signal is output by turning on an emergency stop switch provided in the engine, and an engine stop control device for stopping the engine is provided.

[0003] That is, for example, during a handling operation, a situation may occur in which a worker gets his hand or clothes caught in the feed chain. In such a case, the worker immediately pushes a nearby emergency stop switch. The engine could be stopped by pressing.

[0004]

However, as described above, when the emergency stop switch is pressed during manual handling, the fuel cut solenoid is driven by the engine stop signal and the fuel supply to the engine is cut off. Since the engine is stopped, it takes a predetermined time from the switch operation by the operator to the stop of the engine, during which time the operator is dragged backward with the hand or clothes sandwiched between the feed chains, etc. However, there was a problem that the response in the case of an instant was delayed.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to reduce the transport speed of a feed chain in conjunction with the operation of an emergency operation switch and detection of clogging of a waste straw. Another object of the present invention is to provide an engine stop control device in a combine that is stopped.

[0006]

According to the first aspect of the present invention, there is provided a feed chain (2) for transporting cut culms to a threshing unit (20).
6) and an engine (2) for threshing the supplied grain culm.
5) A combiner (10) provided with a handle drum (28) that is driven to rotate by the power and a discharge straw (36) that conveys the waste straw after threshing toward the rear of the fuselage. Emergency operation means (5
0), at least one of the exhausted straw clogging detecting means (54) for detecting the clogged exhausted straw in the exhausted waratien (36), and the emergency operating means (50) or the clogged exhausted straw detection means (54). Feed chain reduction means (53, 55 ', 58) for reducing or stopping the transport speed of the feed chain (26) in conjunction with the ON operation.

According to the second aspect of the present invention, there is provided an emergency engine stop means (50 ') which is operated in an emergency to stop the engine (25), and the emergency engine stop means (5) is provided.
0 ′), the feed chain (2)
The transport speed of 6) is reduced or stopped.

According to a third aspect of the present invention, the emergency engine stop means (50 ') is mounted on an upper part of a handle cylinder cover (31) for accommodating the handle cylinder (28). .

[Action] In the present invention, the combine (1)
The grain stalks mowed in the pretreatment section 0) are transported and supplied to the threshing section (20) by the feed chain (26), and the supplied grain stalks are threshed by the handling drum (28). The waste straw after threshing is conveyed toward the rear of the machine by the waste warachien (36).

In such a combine (10),
An emergency operation means (50) operable in an emergency is provided at an appropriate position of the body, and a waste straw clog detecting means (54) for detecting a waste straw clog is provided on the waste warachien (36). When the operator turns on at least one of the emergency operation means (50) and the clogging detection means (54), the conveyance speed of the feed chain (26) is reduced in conjunction with this operation. Means (5
3, 55 ', 58).

Thus, for example, when an operator gets a sleeve or the like entangled in the feed chain (26) during a manual operation,
By reducing or stopping the transport speed of the feed chain (26), it is possible to delay the arrival time of the waste straw processing device (38) to the cutter.

Note that the reference numerals in parentheses described above are shown for reference to the drawings, and do not limit the present invention in any way.

[0013]

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

FIG. 1 is a side view of a combine according to the present invention. In FIG. 1, a combine 10 has a driver's seat 14 above an airframe 12 and a pair of right and left crawler traveling devices 16, 16 and fuselage 1
An up-and-down movable cutting device 18 for cutting the culm in front of 2;
A threshing unit 20 for threshing the grain stalks cut by the mowing device 18, and the grains threshed by the threshing unit 20 are supplied from the fryer 21 to the Glen tank 22, and are transported from the Glen tank 22 to trucks and trailers. An auger device 24 for carrying out grains. An engine 25 is provided below the driver's seat 14.

As shown in FIG. 2, the threshing unit 20 is a threshing feed chain 26 driven by a sprocket 69 to convey the grain culm, and a handling cylinder which is juxtaposed to the threshing feed chain 26 for threshing the grain culm. (First handling cylinder) 28, a swing sorting unit 30 that swings and sorts the grains that are threshed by the handling cylinder 28, a Karino fan 32 that creates a sorting wind, and 1 that transfers the grains to the Glen tank 22. A second spiral 34a for performing re-sorting of unsorted kernels and a second spiral 34b, a waste straw chain 36 for transporting the culm after threshing the grain from the cereal stem to the rear of the machine, and a lower spiral at the lower rear of the machine. A waste straw processing device 38 and the like are provided.

Above the threshing feed chain 26,
A rail 40 is provided close to the feed chain 26, and the rail 40 is urged downward by a spring 44 disposed between the rail 40 and the rail base 42 to hold the culm.

Next, the power transmission system is shown. In FIG. 3, the power from the engine 25 is turned on and off by a work machine clutch by a V-belt 60 and is input to the Karamin shaft 32a. The power is transmitted to the drive pulley 64 of the first gear case 63 by the pulley 61 and the belt 62. In the first gear case 63, power is transmitted to the first handling cylinder 28 and the second handling cylinder 29 via a gear belt or the like.

On the other hand, the motive power from the engine 25 is transmitted to the drive pulley 68 of the second gear case 67 by the pulley 65 and the belt 66 from the shaft 32a. The second gear case 67 is transmitted to the threshing feed chain 26 by a sprocket 69 via a gear belt or the like.

The present invention provides an emergency operating means provided at an appropriate position in the body and operated in an emergency, an exhausted straw detecting means for detecting a clogged exhaust stirrer in the exhausted waratien 36, an emergency operating means or a clogged exhausted straw. There is provided a feed chain decelerating unit that reduces or stops the transport speed of the feed chain 26 in conjunction with at least one of the detection units being turned on.

As shown in FIG. 1, a feed chain deceleration switch 50 as an emergency operation means is bonded and installed on the back surface of the rail cover 46 and the side cover 48, and the feed chain deceleration switch 50 is a piezoelectric element (or a static element). (Capacitance sensor), and a plurality thereof are provided. When an operator hits the rail cover 46 or the side cover 48 in an emergency, and at least one of the plurality of feed chain deceleration switches 50 becomes higher than a set voltage, the transport speed of the feed chain 26 is reduced. Is done.

The feed chain deceleration switch 5
0 can also be used as an emergency engine stop switch 50 '. That is, as shown in FIG. 4, the emergency engine stop switch 50 'is connected to the control unit 53 via the operational amplifier circuit 51, and further connected to the fuel cut solenoid 57 via the switching circuit 55. This allows
When the emergency engine stop switch 50 'is turned on, the power supply to the fuel cut solenoid 57 is cut off, the fuel supply to the engine 25 is stopped, and the engine 25 is stopped.

The feed chain deceleration switch 50 is
When used as an emergency engine stop switch 50 ', as shown in FIG.
It is preferable to attach 0 ′ to the upper part of the cylinder cover 31 as a handling cylinder cover.

This is because, for example, if the emergency engine stop switch 50 'is attached to the side of the cylinder cover 31 or below, the emergency engine stop switch 50' is located below the visual position of the handling operator, and any troubles may occur. This is because there may be a delay in the operation of pressing the emergency engine stop switch 50 'instantaneously when the error occurs. In response, the emergency engine stop switch 50 '
If the emergency engine stop switch 50 'is mounted on the upper side of the cylinder cover 31 and on the near side close to the manual operator, the emergency engine stop switch 50' is located at the visual position of the manual operator, and the above-mentioned anxiety is resolved. .

Preferably, the shape of the emergency engine stop switch 50 'is long along the conveying direction of the grain stalk, so that the hand of the handling operator is sandwiched between the feed chains 26 and the like. In addition, since the worker also moves in the conveying direction of the grain stalk, the pressing operation becomes easy.

In an emergency, the engine 25 can be stopped by recognizing the scream of the worker. For example,
As shown in FIG. 6, a microphone 80 is arranged at an appropriate position on the body, and a voice input from the microphone 80 is input to a control unit 82 via a voice recognition unit 81, and the control unit 82 determines that an emergency has occurred. In this case, the power supply to the fuel cut solenoid 83 is cut off, and the fuel supply to the engine 25 is cut off. The frequency characteristics of screams such as “gear”, “ita”, “war”, and “ah” are input to the voice recognition unit 81 in advance, and the frequency characteristics stored in advance and the screams actually generated by the worker are input. If the frequency characteristics match, it is determined that an emergency has occurred, and the engine 25 is stopped.

Further, in the present embodiment, as shown in FIG. 2, a detection arm 52 as exhaust straw clogging detection means for detecting exhaust straw clogging at the exhaust straw chiene 36 is provided at a starting end side of the exhaust straw chien 36. , And a detection switch 54 are provided. When the exhaust straw is clogged in the exhaust straw 36, the detection arm 52 is displaced upward by the pushing pressure of the exhaust straw, and the detection switch 54 is turned on.

When one of the feed chain deceleration switches 50 (or the emergency engine stop switch 50 ') becomes equal to or higher than the set voltage, or when the detection switch 54 for detecting clogging of the waste straw is turned on, In conjunction with this, the transport speed of the threshing feed chain 26 is reduced or stopped.

FIG. 7 shows a circuit diagram at this time. As in FIG. 4, an emergency engine stop switch 50 'and a switch 54 for detecting a clogged exhaust stirrer are connected to a control unit 53, and a switching circuit is further provided. A fuel cut solenoid 57 and a feed chain speed change motor 58 are connected via a 55 '. Accordingly, when at least one of the emergency engine stop switch 50 'and the detection switch 54 is turned on, the power supply to the fuel cut solenoid 57 is cut off, the engine is stopped, and the rotation speed of the feed chain drive motor 58 is reduced. Is done.

FIG. 8 shows a control flowchart at this time.

At S1, it is determined whether the engine flag is 2 or not. If the engine flag is not 2, the process proceeds to S4. If the engine flag is 2, the engine stop timer is further reset at 0 at S2.
It is determined whether or not. If the engine stop timer is not 0, the process proceeds to S6, and if it is 0, the engine flag is set to 0 in S3 and the process proceeds to S4. In S4, it is determined whether the emergency engine stop switch 50 'is ON or OFF. If the switch 50' is OFF, the engine flag is set to 0 in S5.
And return to the first step. On the other hand, if the engine stop timer is not 0 in S2, an engine stop signal is output in S6, and the feed chain drive motor 58 is driven to the deceleration side in S7, and the process returns to the first step.

If the emergency engine stop switch 50 'is ON at S4, it is determined at S8 whether the previous emergency engine stop switch 50' is ON or OFF. , S9
In, it is determined whether or not the engine flag is 1; if it is not 1, the process returns to the first step; if it is 1, the process proceeds to S10. In this S10, it is determined whether or not the delay timer is 0,
If the delay timer is not 0, the process returns to the first step. If the delay timer is 0, the set value of the engine stop timer is set to 2 in S11 and the engine flag is set to 2 in S12.
Set to.

In S8, if the last emergency engine stop switch 50 'is OFF, the process proceeds to S13, where the set value of the delay timer is set to 1 and S1 is set.
At 4, the engine flag is set to 1, and the process proceeds to S10.

By the way, in the above-described embodiment, when the engine stop switch 50 'or the detection switch 54 for detection of clogged exhaust stirrer is turned on, the feed chain drive motor 5
Although the case where the deceleration control of the feed chain 8 is performed has been described, the present invention is not limited to this, and the transport speed of the feed chain 26 can be mechanically reduced.

That is, in this case, as shown in FIG.
This is performed by widening or narrowing the V belt mounting width of the split pulley 56 mounted on the shaft 69a of the driving sprocket 69 (see FIG. 2) of the feed chain 26.

In the same figure, when the operating rod of the cylinder 70 is extended, a rotational force acts on the arm member 71 by the link 77, and the rotational force is also exerted on the inner boss 72 fitted integrally with the arm member 71. work. The cam portion 72a of the boss 72 and the cam portion 73a of the plate 73 are in surface contact. When the boss 72 rotates, the boss 72 moves in a direction away from the plate 73 by the action of the cam surface.

Thus, the movable sheave 74, the bearing 75, the boss 72, and the arm member 71 of the split pulley 56 on the driving side move integrally in the direction away from the plate 73, and the effective diameter of the split pulley 56 increases. In this way, the effective diameter of the driving side split pulley 56 is continuously variable, and the speed change control by the V-belt 78 is performed with the driven side split pulley 59. When the operating rod of the cylinder 70 contracts, the movable sheave 74, the bearing 75, the boss 7
2 and the arm member 71 move in the direction approaching the plate 73 by the urging force of the spring 76, and
The effective diameter of No. 6 decreases.

[0037]

As described above, according to the first aspect of the present invention, the conveying speed of the feed chain is reduced or reduced in conjunction with the ON operation of at least one of the emergency operation means and the exhausted straw detection means. By providing the feed chain decelerating means for stopping, for example, when a sleeve of a worker's clothing or the like is caught in the feed chain during a manual handling operation,
By reducing or stopping the transport speed of the feed chain, it is possible to delay the arrival time to the cutter for processing the waste straw, and to take necessary measures during that time.

Further, when a trouble occurs in the post-processing unit due to clogging of the waste straw or the like, the transport speed of the feed chain is reduced or stopped, so that accumulation of the waste straw at the location where the trouble occurs can be prevented.

According to the second aspect of the present invention, the conveyance speed of the feed chain is reduced or stopped in conjunction with the on-operation of the emergency engine stop means, so that the emergency engine stop means can be operated. Although the engine does not stop abruptly, by reducing or stopping the transport speed of the feed chain, it is possible to give a worker time to stop the engine.

According to the third aspect of the present invention, the emergency engine stop means is mounted on the upper part of the handle cylinder cover for accommodating the handle cylinder, so that the engine emergency stop means is located near the operator's eyes. Therefore, in an emergency, it is possible to instantly turn on without hesitation.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine to which the present invention is applied.

FIG. 2 is a sectional side view of a threshing unit.

FIG. 3 is a diagram showing a power transmission system from an engine to each operation unit.

FIG. 4 shows that the emergency engine stop switch is turned on,
FIG. 3 is a diagram showing a control circuit configured to cut off the power supply to a fuel cut solenoid.

FIG. 5 is a diagram showing a state in which an emergency engine stop switch is attached to an upper part of a cylinder cover.

FIG. 6 is a diagram showing an example in which a voice is input to a microphone.
FIG. 3 is a diagram showing a control circuit configured to cut off the power supply to a fuel cut solenoid.

FIG. 7 is a control circuit in which when either the feed chain deceleration switch or the exhaust straw clogging detection switch is turned on, energization of the fuel cut solenoid is cut off and the rotation speed of the feed chain drive motor is reduced. FIG.

FIG. 8 is a view showing a control flowchart in a feed chain deceleration control.

FIG. 9 is a diagram showing a configuration in a case where the feed chain transport speed is mechanically reduced.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Combine 12 Body 20 Threshing part 25 Engine 26 Feed chain 31 Cylinder cover 36 Discharge warren 50 Feed chain reduction gear 50 'Emergency engine stop switch 53 Control part 54 Detection switch 57 Fuel cut solenoid 58 Feed chain drive motor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideya Eda 667 Idaicho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. Address 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Tatsuya Yamazaki Ichimachi, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 667 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Toshiyuki Ishibashi 667 Iidacho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. 2B074 AA01 AC02 BA05 CD02 DA02 DB01 DB04 DD01 EA09 EA13 EB09 EC02 EE05 FC02 GB01 GH05 2B076 AA03 EA01 EB05 EC07 EC23 ED09 ED12

Claims (3)

[Claims] 1. A feed chain for transporting a harvested grain culm toward a threshing unit, a handling drum rotated by the power of an engine to thresh the supplied grain culm, and a straw for threshing after threshing. And a discharge straw that conveys the rearward of the fuselage, emergency operation means provided at an appropriate position on the fuselage and operated in an emergency, and discharge straw clogging detection means for detecting a discharge straw clog in the discharge straw Feed chain deceleration means for decelerating or stopping the feed speed of the feed chain in conjunction with the on operation of at least one of the emergency operation means and the exhausted straw clogging detection means, Engine stop control device in a combined machine. 2. An emergency engine stop means which is operated in an emergency to stop the engine, wherein the feed speed of the feed chain is reduced or stopped in conjunction with an ON operation of the emergency engine stop means. The engine stop control device for a combine according to claim 1, wherein: 3. The engine stop control device for a combine according to claim 1, wherein said emergency engine stop means is mounted on an upper part of a handle cylinder cover for accommodating said handle cylinder.