JPH08242665A - Overload alarming apparatus for combine harvester - Google Patents

Abstract

PURPOSE: To inform an operator of the difference of criticality to cope with an overloaded state in the case of alarming the operator of the overloaded state of an engine since the significance of the overloaded state is dependent upon the situation whether the thresher is supplied with reaped culms or not. CONSTITUTION: This alarming apparatus is provided with an engine load detection means 200 to detect the load on an engine E and a culm detection means S1 to detect the supply of reaped culms to a thresher 3. An alarming means K (an alarming sound generation apparatus 26 or an alarm displaying apparatus 27) is actuated by a controlling means 100 when the load on the engine E detected by the engine load detection means 200 and the culm detection means S1 exceeds a preset load level. The operation mode is switched according to the case that the thresher 3 is supplied with the reaped culm and the case that the supply of the culm is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine load detecting means for detecting the load of an engine, and an alarm means when the load of the engine exceeds a set load based on the detection information of the engine load detecting means. And a load warning device of a combine provided with a control means for operating.

[0002]

2. Description of the Related Art In a combine load alarm device, for example, an engine speed in an unloaded state is stored as a reference speed, and an engine load detected as an amount of engine speed down from the reference speed is detected. When an overload condition equal to or more than a set load is reached, for example, an alarm means such as a horn that emits an intermittent sound or a display lamp is activated to notify an operator of the overload condition. When the operator knows the overload state by the above-mentioned alarm, if it is determined that it is necessary, the operator can perform deceleration operation manually or the like to prevent the occurrence of trouble such as engine stall.

[0003]

However, similarly, even if the engine is overloaded, the contents of the overloaded state differ depending on whether or not the stalks are supplied to the threshing device. become. That is, during the mowing operation in which the mowing grain culm is being supplied to the threshing device, the engine load is due to the threshing load and the traveling load due to the mowing grain culm in the threshing device, and the engine speed increases due to the increased load. Even if the load decreases, the running load becomes lighter, but the threshing load does not change so much, so that there is a tendency that the elimination of the overload state is delayed. On the other hand, when the threshing device is not supplied with mowing culms and the headland is traveling after mowing work, the load is mainly due to the traveling load, and if the engine speed decreases, the traveling load will decrease. It becomes lighter and the overload condition tends to be eliminated quickly. Therefore, even in the same overload state, the content of the overload state varies depending on whether or not the mowing culms are supplied to the threshing device, but in the conventional technology, the operator recognizes the difference. However, there is a problem that it is not possible to properly deal with the overload condition.

The present invention has been made in view of the above situation, and an object thereof is to supply a threshing culm to a threshing device when warning a worker that an engine is overloaded. The purpose of this is to make the worker recognize that the contents of the overload state differ depending on whether or not there is an urgency in dealing with the overload state.

[0005]

A first characteristic configuration of a combine load alarm device according to the present invention is provided with grain culm detecting means for detecting whether or not a slaughter grain culm is being supplied to a threshing device. The control means, based on the detection information of the grain culm detection means, switches the operation content of the alarm means depending on whether the harvested grain culm is supplied to the threshing device and the case where the harvested grain culm is not supplied. It is configured as follows.

A second characteristic configuration is the same as the first characteristic configuration, wherein the alarm means comprises an alarm sound generating device for generating an alarm sound and an alarm display device for displaying an alarm, and the control means. When the cutting grain culm is being supplied to the threshing device, both the alarm sound generating device and the alarm display device are activated, and when the cutting grain culm is not supplied to the threshing device, It is configured so that only the alarm display device is activated.

A third characteristic configuration is the first or second aspect described above.
In the characteristic configuration of the engine, an engine rotation speed detection means for detecting the rotation speed of the engine and a power on / off means for turning on / off the power transmission from the engine to the cutting device are provided, and the engine load detection means is the engine. Based on the detection information of the rotation speed detection means, the rotation speed of the engine when the power on / off means is operated to be stored is stored as a reference rotation speed, and the amount of decrease in the engine rotation speed from the reference rotation speed is stored. The control means is configured to detect the load of the engine, and the control means is configured to activate the alarm means when the reference rotation speed is lower than a set rotation speed.

[0008]

According to the first characteristic configuration of the present invention, when the threshing device is supplied with the cut culms when it is detected that the engine load is in the overload state of the set load or more, When the culm is not supplied to the threshing device,
The operation content of the alarm means is switched.

Further, according to the second characteristic configuration, in the first characteristic configuration, when the engine load becomes an overload state of a set load or more, the threshing device is supplied with the cut culms. In this case, an alarm sound is generated from the alarm sound generation device and is displayed as an alarm on the alarm display device, while an alarm is displayed on the alarm display device when the mowing culm is not supplied to the threshing device. However, no alarm sound is generated from the alarm sound generator.

According to the third characteristic configuration, in the first or second characteristic configuration, the engine speed when the power on / off means is turned on and the power is transmitted from the engine to the reaping device is increased. It is stored as a reference rotation speed, and when the reference rotation speed is lower than the set rotation speed, the alarm means is activated. Then, the amount of decrease in the engine speed from the reference speed is detected as the load of the engine, and when the engine load becomes an overload state of a set load or more, it depends on whether or not the mowing culm is supplied to the threshing device. The operation content of the alarm means is switched to activate the alarm.

[0011]

Therefore, according to the first characteristic configuration of the present invention, the alarm actuation contents in the overload state differ depending on whether or not the mowing culms are supplied to the threshing device. The operator can recognize that the content of the overload state, that is, the urgency of responding to the overload state varies depending on the difference in the above. For example, when an overload condition occurs when turning on a headland after the mowing work, the mowing culm is not supplied to the threshing device, so depending on the content of the alarm, it is not so urgent to respond to the overload condition. No, for example, it can be determined that it can be dealt with by decelerating a little, but when the overload condition occurs during the mowing work, the threshing device is supplying the mowing culm, so the alarm activation causes an overload condition. Is urgent, for example, it is possible to determine that it is necessary to temporarily stop traveling to eliminate the overload condition, etc.
The operator who is informed of the overload state by the alarm operation can take more appropriate measures.

Further, according to the second characteristic constitution, for example, an alarm display that requires visual observation of a display device installed on a display panel or the like, and an alarm sound forcibly coming into the ear can be used to indicate an overload condition. While it can be recognized that the response is urgent, it can be recognized that the response to the overload state is not so urgent when only the alarm display is performed, and thus the preferable means of the first characteristic configuration can be obtained.

Further, according to the third characteristic configuration, the engine speed decreases as the engine load increases. Therefore, the engine load can be properly detected based on the amount of decrease in the engine speed, while the reference value is used. When the reference speed in the no load condition is too low and the combine power is insufficient, an alarm is activated.For example, an operator adjusts the engine speed so that it stalls during operation. This makes it possible to avoid problems such as an increase in ease, and in addition to the effect of the first or second characteristic configuration, the alarm means can also be used for determining the engine output state at the start of operation, which is more convenient. A combine load alarm device is obtained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to an all culm throw-in type combine will be described below with reference to the drawings. As shown in FIG. 2, in the all-culm throw-in type combine, a cockpit 2 and a threshing device 3 are provided in a body V provided with a pair of left and right crawler traveling devices 1.
The harvesting device 4 is provided in front of the machine body V so as to be vertically movable around a horizontal axis along the machine body lateral width direction.

The reaping device 4 comprises a weeding tool 5 provided at the tip, a reel 6 for scraping planted culms in the field to the rear side, and a clipper-type mowing for cutting the scraped grain cultivar roots. Blade 7,
An auger 8 that receives the cut culm and sends it back, and
The conveyor 9 is configured to scrape and convey grain culms sent from the auger 8 to the threshing device 3.

The threshing device 3 includes a handling room A having a handling cylinder 10 which rotates around an axis in the front-rear direction of the machine body V and a receiving net 11 on the lower side thereof, and a substance which has leaked from the handling room A to produce grains. It comprises a sorting section B for sorting and collecting the grains. Although not shown in detail in the sorting section B, an oscillating sorting plate for separating and sorting grains and straw debris and the like, a tomi that generates a wind that blows away the straw debris, and the sorted grains are collected. A recovery device and the like are provided.

Sensation of grain culm as grain culm detection means for detecting whether or not the culm grain culled by the reaping device 4 and conveyed to the threshing device 3 by the auger 8 and the conveyor 9 is supplied to the threshing device 3. The switch S1 is provided in the front part of the handling room A. The grain culm detection switch S1 is attached to the inside of the ceiling cover 12 of the handling room A, as shown in FIG.
Contact piece 28 that swings freely in the direction of rotation, a spring 29 that urges the contact piece 28 toward the side closer to the handling cylinder 10, and ON as the contact piece 28 swings above a set value.
And an activating switch 30. That is, the handling room A
When the grain culm is supplied to the container, the contact piece 28 comes into contact with the object to be treated by the handling cylinder 10 and the switch 30 is turned on to detect that the grain culm is being supplied, and the grain culm is supplied to the handling room A. Is stopped and the switch 30 is turned off, it is detected that the grain culm is not supplied. Although not described in detail, the handling room A
The dust transfer valve 13 for adjusting the residence time in the handling chamber A of the treated product by promoting or suppressing the rearward transfer of the treated product in the handling chamber A and thus optimizing the threshing condition It is provided on the inner surface of the ceiling cover 12.

Next, the control configuration of the combine will be described. As shown in FIG. 1, the power of the engine E is passed through a threshing clutch 22 of a belt tension type to perform the threshing device 3
Belt transmission to the hydraulic continuously variable transmission 16 as a traveling transmission, and the transmission 1
The output of 6 is transmitted to the crawler traveling device 1 via the transmission case 17. Further, a belt tension type reaping clutch 23 is provided as a power on / off means for turning on / off the power transmission from the engine E to the reaping device 4. Incidentally, the threshing clutch 22 and the reaping clutch 23
In order to turn each of them on and off, the operation levers 22a and 23a provided in the cockpit 2 are provided with a threshing clutch switch S3 and a reaping clutch switch S4 which are turned on when the clutch is engaged.

Further, a manually operated speed change lever 20 provided in the cockpit 2 and the speed change device 16 are interlockingly connected via a link mechanism, and a speed change electric motor as an actuator for operating the speed change device 16. M is interlockingly connected to the link mechanism via a friction type transmission mechanism 21 so as to give priority to the shift by the shift lever 20. The engine E is provided with a rotation speed sensor S5 as an engine rotation speed detecting means for detecting the rotation speed by an electromagnetic pickup type. Further, the rotation shaft of the mission case 17 detects the rotation speed of the combine and detects the rotation speed of the combine. A vehicle speed sensor S6 for detecting the vehicle speed is attached.

A control device H utilizing a microcomputer is provided, and the control device H is provided with the grain culm sensing switch S.
1, a threshing clutch switch S3, a reaping clutch switch S4, a rotation speed sensor S5, a vehicle speed sensor S6, and a vehicle speed automatic switch 2 which is an illuminated push button switch.
Each signal from 5 is input. In addition, the controller H
A load / vehicle speed meter 27 for displaying the electric motor M, the load state of the engine E or the state of the vehicle speed by switching with a switch, and a horn 26 are connected. Here, the load / vehicle speed meter 27 and the horn 26 are used to provide the alarm means K.
The load / vehicle speed meter 27 constitutes an alarm display device, and the horn 26 constitutes an alarm sound generation device for emitting an alarm sound.

Using the control device H, the rotation speed of the engine E when the reaping clutch 23 is engaged and operated is stored as a reference rotation speed based on the information of the rotation speed sensor S5, and the reference speed is stored. An engine load detection unit 200 that detects the amount of decrease in the engine speed from the engine speed as the load of the engine E is configured. To be more specific, the threshing clutch switch S3 is turned on and the vehicle speed is 0.1 m / sec or more, and the reaping clutch 23 is turned on and the reaping clutch switch S4 is turned on.
The engine speed X when the engine E is stored is stored as the reference speed ST in the unloaded state of the engine E (reference speed setting process), and the engine speed X from the reference speed ST is stored.
Is defined as the engine load ST-X.

The engine load is, as shown in FIG.
Level 1 below 20 rpm, Level 2 below 20 rpm, 45 to 85 depending on the amount of engine speed X reduction
rpm level 3, 85-120 rpm level 4, 1
It is classified into 6 stages of level 5 of 20 to 150 rpm and level 6 of 150 rpm or more (corresponding to an overload state). Further, the load / vehicle speed meter 27 is constructed in a bar graph type consisting of five segments, and the range of the segments that light up as the load level increases from 1 to 5 is from the left segment 1 to the right segment. At level 6, all segments are designed to blink. In the case of the vehicle speed display, the lighted segment moves from the left side to the right side as the vehicle speed increases.

Further, when the load of the engine E is equal to or more than a set load (150 rpm), that is, an overload state, based on the detection information of the engine load detecting means 200 using the control unit H, A control means 100 for activating the alarm means K is configured. Then, the control means 100, based on the detection information of the grain culm sensing switch S1, the alarm means depending on whether the harvested grain culm is supplied to the threshing device 3 or not. It is configured to switch the operation content of K. Specifically, when the harvested grain culm is supplied to the threshing device 3, both the horn 26 and the load / vehicle speed meter 27 are operated, and the harvested grain culm is not supplied to the threshing device 3. In this case, only the load / vehicle speed meter 27 is operated. The operation content of the load / vehicle speed meter 27 here is the above-mentioned blinking operation of all the segments.

In the control means 100, the reference rotation speed ST stored in the reference rotation speed setting process is lower than the set rotation speed (that is, the minimum engine rotation speed required to operate the combine). In some cases, it is configured to activate the alarm means K. Specifically, the load /
All segments of the vehicle speed meter 27 are operated to blink.

Next, the operation of the controller H will be described with reference to the flow chart shown in FIG. First, it is checked whether or not the threshing clutch switch S3 is in the ON state. If it is in the ON state, the reference rotation speed setting process is executed. Here, when the reference rotation speed ST is lower than the set rotation speed, all the segments of the load / vehicle speed meter 27 are blinked to stand by until the reference rotation speed ST becomes higher than the set rotation speed. . If the reference rotation speed ST becomes higher than the set rotation speed, the blinking operation of the load / vehicle speed meter 27 is stopped, the engine rotation speed X is detected, and the engine load ST which is the difference from the reference rotation speed ST is detected. -X is detected.

Then, when the detected engine load ST-X is in the overload state of the set load (150 rpm) or more, the state of the grain culm sensing switch S1 is further examined, and when the grain culm sensing switch S1 is ON. Causes all the segments of the load / vehicle speed meter 27 to blink, and the horn 26
While intermittently operating, grain culm detection switch S1 is OFF
In the case of 1, all segments of the load / vehicle speed meter 27 are operated by blinking, but the horn 26 is not operated. In this overload state, the blinking operation is forcibly performed even if the load / vehicle speed meter 27 is in the vehicle speed display state.

Next, the state of the vehicle speed auto switch 25 is checked, and if the vehicle speed auto switch 25 is in the ON state, it means that the engine load ST-X is within the target load range (for example, 60 to 90 rpm) because the automatic speed change mode is in effect. If it is larger than the target load range, the deceleration operation is performed. If it is within the target load range, the shift operation is stopped as an appropriate load state, and if it is smaller than the target load range, the speed increase operation is performed. On the other hand, when the vehicle speed auto switch 25 is in the OFF state, it means the manual shift mode, and in this case, the automatic shift operation based on the engine load is not performed.

[Other Embodiments] In the above embodiment, the engine load detecting means 200 detects the engine load based on the rotation speed of the engine E based on the amount of down from the reference rotation speed. You may make it detect based on the torque etc. of the rotating shaft of E. Further, the engine speed detecting means is not limited to the electromagnetic pickup type speed sensor S5 of the embodiment.

In the above embodiment, the alarm means K is composed of the load / vehicle speed meter 27 as an alarm display device and the horn 26 as an alarm sound generating device. However, the alarm device is not limited to this, and for example, an alarm sound is generated. It may be configured only by the device (horn 26) or may be configured by means other than the alarm display device 27 and the alarm sound generation device 26. Further, the alarm display device may be an indicator lamp or the like other than the load / vehicle speed meter 27, and the alarm sound generator may be a buzzer or the like other than the horn 26.

In the above embodiment, the grain culm detecting means is provided in the handling room A.
Although it is configured by the grain culm sensing switch S1 provided inside, the configuration is not limited to this, and it may be configured by a grain culm sensing switch or the like provided at another portion of the threshing device 3.

In the above embodiment, the power on / off means is constituted by the belt tension type reaping clutch 23, but the invention is not limited to this.

In the above embodiment, in order to switch the operation content of the alarm means K according to the presence or absence of grain culm supply in an overloaded state,
The alarm sound generator (horn 26) is activated / deactivated, but the invention is not limited to this. For example,
The alarm sound generator 26 may be intermittently operated in a short cycle when the grain culm is supplied in the overload state, and may be intermittently operated in a long period when the grain culm is not supplied.

In the above embodiment, when the reference rotation speed ST is lower than the set rotation speed, only the alarm display device (load / vehicle speed meter 27) is operated to activate the alarm means K. The present invention is not limited to this. For example, the alarm display device (horn 26) may be intermittently operated with a long cycle together with the alarm display device.

In the above-mentioned embodiment, the present invention is applied to the all culm throwing type combine, but it can be applied to a combine other than the all culm throwing type combine.

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

[Brief description of drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a schematic side view of an all culm throw type combine harvester.

FIG. 3 is a front sectional view of a handling room of a threshing device showing a grain culm detecting means.

FIG. 4 is a diagram showing a relationship between engine load and load display.

FIG. 5 is a flowchart of control operation.

[Explanation of symbols]

 E engine 200 engine load detecting means K alarm means 100 control means 3 threshing device S1 grain culm detecting means 26 alarm sound generating device 27 alarm display device S5 engine speed detecting means 4 cutting device 23 power on / off means

Claims (3)

[Claims] 1. An engine load detection means (200) for detecting a load of an engine (E), and a load of the engine (E) is equal to or more than a set load based on detection information of the engine load detection means (200). A combine load alarm device provided with a control means (100) for activating the alarm means (K) when it becomes low, and detects whether or not the harvested culm is supplied to the threshing device (3). A grain culm detection means (S1) is provided, and the control means (100) is the grain culm detection means (S1).
Based on the detection information of the above, it is configured to switch the operation content of the alarm means (K) depending on whether the harvested grain culm is supplied to the threshing device (3) or not. Combined load alarm device. 2. The alarm means (K) comprises an alarm sound generation device (26) for generating an alarm sound and an alarm display device (27) for displaying an alarm, and the control means (100) comprises: When the threshing culm is supplied to the threshing device (3), both the alarm sound generating device (26) and the alarm display device (27) are activated, and the threshing device (3) is cut with the cutting grain culm. The combine load alarm device according to claim 1, wherein only the alarm display device (27) is activated when the load alarm device is not supplied. 3. An engine speed detecting means (S5) for detecting the speed of the engine (E), and a power on / off means (23) for turning on / off the power transmission from the engine (E) to the reaping device (4). ) Is provided, the engine load detection means (200) is configured to operate the engine () when the power on / off means (23) is operated based on the detection information of the engine speed detection means (S5). E) is stored as a reference number of revolutions, and a reduction amount of the engine number of revolutions from the reference number of revolutions is detected as a load of the engine (E), and the control means (100) is The load warning device for a combine according to claim 1 or 2, wherein the warning means (K) is configured to be activated when the reference speed is lower than a set speed.