JP2002281814A - Alarm device of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a reaping work is carried out in a state where a preliminarily treating portion is not operated due to the forgetting in the switch-on of a reaping clutch. SOLUTION: A preliminary treating portion operation state-detecting means comprising a rotation sensor 49 for detecting the action state of a preliminary treating portion 5 of a combine harvester 1 or a reaping clutch switch disposed at a place facing a reaping lever or the like, and a reaping work start-detecting means for detecting unreaped grain culms with direction sensors 20L, 20R for automatic direction control to detect that the preliminary treating portion 5 advances into a grain culm group and starts a reaping work are disposed. When the operation state-detecting means detects the start of a reaping work in a state that the operation state-detecting means does not detect the action state of the preliminary treating portion 5 (a state that an operator forgets to switch on the reaping clutch), an alarm alarms the operator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warning device at the start of a combine harvesting operation.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Application Laid-open No. Sho 59-182130.
As disclosed in the publication, a work condition sensor for detecting the operating status of a plurality of working devices, so as to be able to check the on / off state of each work clutch and the state of each work unit before starting the harvesting work of the combine, It is provided with an alarm monitor sensor for the presence or absence of a plurality of types of abnormalities, and when it is detected that all of the working condition sensors are in operation, and when it is detected that all of the alarm monitor sensors are normal, One display device is provided for comprehensively displaying based on the detection result, and the display device displays to the operator that the harvesting work start is OK.

[0003]

However, in the above-mentioned conventional apparatus, it is necessary to check the display device at the beginning of each actual cutting operation by checking the display device. In some cases, the reaping operation is performed in a cut-off state, that is, in a state where the pretreatment device is not operating, and in that case, there is a problem in that it is delayed to notice and many culms are stepped down by the crawler.

[0004]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the problems based on the actual situation as described above, and is an operating state detecting means for detecting the operating state of a preprocessing unit in a combine. And, provided a mowing work start detecting means for detecting that the pre-processing unit has entered the culm group and started mowing work, wherein the operating state detecting means does not detect the operating state of the pre-processing unit, The first feature is that the mowing work start detecting means is configured to issue an alarm to an operator when detecting the start of the mowing work.

The operating state of the pre-processing unit is detected by a rotation sensor for detecting the operating state of the pre-processing unit or a cutting clutch switch for detecting the engaged state of the cutting lever, and the direction sensor for automatic direction control is not provided. The second feature is that the start of the mowing operation is detected by detecting the cut culm.

[0006]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a right side surface of the combine 1. The combine 1 includes a pair of right and left crawler traveling devices 2, 2. A pre-processing unit 5 which can move up and down freely is installed, and a threshing unit (not shown) is mounted behind the pre-processing unit 5. On the other side of the body frame 3, a control unit 7, an engine 9 provided below a driver's seat 8, and a grain tank 11 including an auger 10 for discharging grains are mounted. A straw processing device (cutter) 12 is provided on the body frame 3 behind the unit 11.
Note that the grain tank 11 may be configured as a hopper-type storage unit that stores the threshed grains in a paddy bag. The pre-processing unit 5 includes the weeding body 1 in the cutting frame 13.
4..., Raising device 15.
7 and the like, and the pre-processing unit 5 is mounted on the body frame 3 so as to be able to move up and down by a transmission pipe 18 having a transmission shaft provided at a rear portion thereof and an auxiliary pipe frame (not shown).

[0007] Also, 20R and 20L are direction sensors mounted on the cutting frames 13 and 13 on the left and right sides, respectively.
As shown in FIG. 2, the direction sensors 20R and 20L are urged by springs (not shown).
R, 21L, and the sensor bars 21R, 21L detect the passage position of the cereal stem introduced between the weeds 14 of the pre-processing unit 5, and connect the side clutches of the crawler traveling devices 2, 2 to electromagnetic solenoid valves. , And automatic direction control is performed so that the aircraft follows the culm row.

As shown in FIG. 3, the control unit 22 is configured using a microcomputer (including a CPU, a ROM, a RAM, and the like), and has an input side provided with a direction automatic control for activating automatic direction control. Switch 23, switch 2 for switching the control state of automatic direction control between standard and middle
4. A mission rotation sensor 25 for detecting the forward running and speed of the aircraft, a back switch 26 for activating automatic direction control only during forward running, and an operation for detecting a manual operation of the multi-steering lever M for turning and correcting the direction of the aircraft. Directional switch 27, just switch 2 for detecting alignment at the beginning of cutting and manual fine-tuning during cutting
8, work machine clutch switch 29 for detecting the operating state of the threshing unit, left direction sensor 20L and right direction sensor 20R for detecting uncut kernels, rotation sensor 49 for detecting the operating state of pre-processing unit 5, cutting kernels An input device such as a manual operation detection switch 56 for detecting the manual operation state is connected via a predetermined input interface circuit, while an automatic direction lamp 3 for displaying an automatic direction control state is provided on the output side.
0, a middle split switching lamp 31 for displaying the working state of the automatic direction control (standard and middle split), an electromagnetic solenoid valve 32R for operating the right side clutch gear of the crawler traveling devices 2 and 2, and a left side clutch gear for operating Electromagnetic solenoid valve 32L to be operated, hand-handling indicator 33 for displaying the hand-handling work state of cutting grain culm, and buzzer (alarm)
An output device such as B is connected via a predetermined output interface circuit.

Next, the structure of the power input unit of the preprocessing unit 5 will be described. As shown in FIG. 4, an input pulley 36 attached to a preprocessing input shaft 35 supported on a transmission gear case 34 constituting a base of the transmission pipe 18 of the preprocessing unit 5, and a preprocessing drive pulley (not shown) of the transmission. ) To V
Power is transmitted to each device of the pre-processing unit 5 by winding the belt 37 around. Then, the power is branched in two directions, one of which drives a transmission shaft 40 via a gear 39 which meshes with a gear 38 attached to a substantially intermediate portion of the preprocessing input shaft 35, and further drives the transmission shaft 40. By driving the transmission shaft 43 via a bevel gear 42 that meshes with the attached bevel gear 41, power is transmitted to drive splotters 44, 45 and the like that perform stock transfer and tip transfer of a handling depth transfer unit (not shown). It is configured as follows. The other is to drive the transmission shaft 48 via a bevel gear 47 which meshes with a bevel gear 46 attached to one end of the pre-processing input shaft 35, so that the raising device 15,... It is configured to transmit power to a transport device (not shown), a lateral feed transport device (not shown), and the like.

A rotation sensor 49, which is a means for detecting the operating state of the preprocessing unit 5 of the present invention, is provided at the shaft end of the transmission shaft 40.
Is mounted from the outside of the transmission gear case 34, and whether the rotation sensor 49 detects (YES) or not (NO) is an input condition for automatically controlling the handling depth of the cutting culm. As shown in the flowchart of FIG. 5, when the operator forgets to apply the cutting clutch at the start of the harvesting operation of the combine 1, the rotation sensor 49, which is the operating state detecting means of the preprocessing unit 5, operates the preprocessing unit 5. Is not detected. As described above, when the operator attempts to perform the harvesting operation without noticing the state in which the cutting clutch is disengaged, that is, the state in which the pre-processing unit 5 is not operating, and causes the combine 1 to enter the grain culm group, The left and right direction sensors 20L and 20R provided for automatic direction control are used as mowing work start detecting means, and as soon as either of the two-way sensors 20L or 20R detects a grain culm and turns ON, the buzzer B is used immediately. Since a warning is issued to notify the operator, it is possible to solve the problem that the harvesting work is performed by mistake while the pre-processing unit 5 is not operating and the grain crawler is stepped down by the crawler. In addition, the above-described alarm device does not use a special device, and the existing left and right direction sensors 2 are used.
It can be constructed inexpensively while using 0L and 20R,
It is possible to reliably prevent the wrong harvesting operation from being continued. It should be noted that the rotation sensor 49 detects (YES) even when the grain stalk or the like bites into the cutting blade 16 of the pre-processing unit 5 and the V-belt 37 that transmits power from the transmission to the pre-processing unit 5 slips. ), Nothing (N
O) may be used to issue a slip warning of the V-belt 37.

An operating state detecting means of the pre-processing unit 5 may be provided by mounting a cutting clutch switch (not shown) for detecting the engagement / disengagement of the cutting clutch to a cutting lever or the like. In this case, as shown in the flowchart of FIG. 6, the presence or absence of the operation of the pre-processing unit 5 is detected by the ON / OFF of the reaping clutch switch, and the reaping clutch switch is in the OFF state, that is, the operator operates the pre-processing unit 5. If the combine is caused to enter the culm group in an attempt to perform the mowing operation without noticing that the mowing operation has not been performed, the left and right sides provided for the automatic direction control of the machine, which is the mowing operation start detecting means. If any one of the direction sensors 20L and 20R detects the cereal stem and turns ON, the direction sensor ON flag may be set and an alarm may be issued.

Further, when an obstacle is found in front of the pre-processing unit 5 during the mowing operation, or when a culm jam occurs in the scraping transfer device 17 or the like, the mowing lever must be operated immediately to disengage the mowing clutch. Therefore, as shown in the flowchart of FIG. 7, the presence or absence of the operation of the pre-processing unit 5 is detected by ON / OFF of the mowing clutch switch, and the forward running of the body is detected by the above-described transmission rotation sensor 25 and the like. Even if the reaping clutch switch is OFF and either of the left and right direction sensors 20L and 20R detects the grain stalk and is ON, the alarm is not sounded unless the machine is in the forward running state. Is also good. Further, if the configuration is such that the engine 9 is stopped together with the alarm, it is possible to reliably prevent erroneous harvesting work from continuing.

Further, conventionally, in the cutting operation using the combine 1 along the ridge, if the ridge is in the way and it is difficult to perform normal cutting, the culm along the ridge is manually cut and the cut culm is removed. The threshing process was performed by manually supplying to the introduction portion of the threshing unit of the stopped combine 1. In order to perform the above-described threshing process of the hand-cut culm, FIG.
As shown in FIG. 9, a guide rail 5 is provided at a front end portion of a sandwiching rail 51 provided opposite the feed chain 50 of the threshing unit 6.
2 is supported so as to be able to swing up and down, and the guide rail 52 is set in a manual operation posture (indicated by a two-dot chain line) standing up with respect to the feed chain 50 and a normal operation posture (holding posture) in which the front end is folded down. And a support portion 54 for supporting the switchable state. By setting the guide rail 52 to the normal working posture, the grain culm conveyed from the pre-processing unit 5 side of the combine 1 can be smoothly inherited and conveyed to the threshing unit 6, and the guide rod 52 is raised. In this manner, the cereal culm can be manually threshed (hand-clamping operation) while the cereal culm is manually inserted into the introduction section by setting the posture to the manual operation.

The guide rod 52 rotates about a point P of a support member 55a provided at the front end of a rail base 55 for resiliently supporting the sandwiching rail 51, and raises the guide rail 52 to handle it. When the posture is set (indicated by a two-dot chain line in FIG. 8), the hand operation detection switch 56 attached to the support member 55a is turned on, the hand operation indicator 33 provided on the control unit 7 is turned on, and the hand operation is performed. In order to improve the sorting accuracy at the time, the ability of the swinging sorting body to leak the processed material is reduced, and the sorting control exclusively for handling as shown in the flowchart of FIG. 10 is performed.

By the way, after the above-described manual handling operation is completed, the normal mowing operation is performed without returning to the normal operating position in which the front end is turned down from the state of the manual operating position in which the guide rail 52 is raised. If performed, the cereal culm conveyed from the pre-processing unit 5 side is not smoothly transferred to the feed chain 50 and the start end side of the sandwiching rail 51, so that a large amount of culm is accumulated on the start end side and culm clogging occurs. There's a problem. Therefore, if the operator attempts to perform a normal reaping operation without noticing the state of the handling operation posture in which the guide rail 52 is raised, it is necessary to notify the operator by issuing some kind of alarm. In such a situation, the handling detection switch 56 is turned ON and the control unit 7
When the main operation lever 57 is tilted toward the forward running side when the operation detection switch 56 is ON, an alarm is issued by the buzzer B. Alternatively, the sub-shift lever 58 may be automatically switched from the working range to the neutral range by turning on the manual handling detection switch 56 so that the combine 1 cannot be driven. Also,
The rotation sensor 49, which is the operation (rotation) detection means of the pre-processing unit 5 described above, has detection (YES), no detection (NO), and the O of the direction sensor 20 provided for automatic direction control of the aircraft.
N and OFF may be used as control means. That is, in the state of the manual operation posture in which the manual operation detection switch 56 is turned ON, the normal mowing work is performed without the operator noticing the state of the manual operation posture in which the guide rail 52 is raised. In the case, the handling detection switch 5
If ON is provided, the direction sensor 20 is provided in the direction sensor 20 for automatic direction control of the aircraft, regardless of whether the operation (rotation) detection of the rotation sensor 49 of the preprocessing unit 5 is present (YES) or not (NO). Alternatively, a configuration may be adopted in which either the left sensor bar 21 or the right sensor bar 22 detects a grain stalk and turns on to issue an alarm.

[0016]

According to the first aspect of the present invention having the above-described configuration, the operating state detecting means for detecting the operating state of the pre-processing section 5 in the combine 1 and the pre-processing section 5 are provided with the grain. A mowing work start detecting means for detecting that the mowing work has started by entering the culm group is provided, wherein the operating state detecting means does not detect the operating state of the pre-processing unit 5; When the start of the mowing operation is detected, an alarm is issued to the operator. Therefore, if the operator attempts to perform the mowing operation without confirming the operation state of the preprocessing unit 5, the combine 1 enters the culm group. If the operating state detecting means does not detect the operating state of the pre-processing unit 5 even when the mowing work start detecting means detects the start of the mowing work, the operator immediately Since the warning that the pre-processing unit 5 is not operating is issued by an alarm, the problem that the harvesting work is performed by mistake while the pre-processing unit 5 is not operating and many culms are stepped down by the crawler is solved. can do.

According to the second aspect of the present invention, the operation state of the pre-processing unit 5 is detected by the rotation sensor 49 for detecting the operation state of the pre-processing unit 5 or the cutting clutch switch for detecting the engagement state of the cutting lever. At the same time, since the direction sensors 20L and 20R for automatic direction control are configured to detect the start of the cutting operation by detecting the uncut kernels, the pre-processing unit 5 described above is used while using existing equipment. The operating state detecting means and the mowing work start detecting means can be configured at low cost.

[Brief description of the drawings]

FIG. 1 is a right side view of a combine.

FIG. 2 is a schematic plan view of a preprocessing unit.

FIG. 3 is a block diagram of a control unit.

FIG. 4 is a cross-sectional view illustrating a power input unit of a preprocessing unit.

FIG. 5 is a flowchart showing a first embodiment of the present invention.

FIG. 6 is a flowchart showing a second embodiment of the present invention.

FIG. 7 is a flowchart showing a third embodiment of the present invention.

FIG. 8 is a perspective view of a combine.

FIG. 9 is a schematic side view of a portion for introducing a culm by a feed chain and a holding rail.

FIG. 10 is a flowchart showing sorting control dedicated to handling.

[Explanation of symbols]

 1 Combine 5 Pre-processing unit 20L Left direction sensor 20R Right direction sensor 49 Rotation sensor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B076 AA03 EB04 EC12 EC16 ED22 ED23 5C086 AA22 BA22 DA01

Claims (2)

[Claims] An operating state detecting means for detecting an operating state of a pre-processing unit (5) in a combine (1), and a pre-processing unit (5).
A mowing work start detecting means for detecting that the mowing work has entered the stalk group and starting the mowing work, wherein the operating state detecting means does not detect the operating state of the pre-processing section (5), and An alarm device for a combine, wherein an alarm is issued to an operator when the start detecting means detects the start of a mowing operation. 2. A pre-processing unit (5) comprising a rotation sensor (49) for detecting an operation state of the pre-processing unit (5) or a reaping clutch switch for detecting an engaged state of a reaping lever.
And a directional sensor for automatic directional control, wherein the direction sensors (20L) and (20R) detect an uncut grain culm and thereby detect the start of the cutting operation. An alarm device for a combine according to claim 1.