JPH06315313A - Reaping harvester - Google Patents

Abstract

PURPOSE:To enable the sure detection of a clogged state of reaped grain culms in a state of a slight time lag. CONSTITUTION:The reaping harvester is equipped with a reaping pretreatment part for reaping planted stand grain culms and conveying the reaped grain culms to a rear thresher. This reaping harvester is further provided with a plant foot sensor 25 for detecting whether the reaped grain culms are conveyed or not in the reaping pretreatment part, a speed detecting sensor 27 for detecting the driving load of the thresher from a state of a lowered speed of an engine 26 and an engine stopping circuit 30 for stopping the engine 26 when the driving load on the thresher 3 detected based on the engine speed is lower than the set value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting and harvesting machine having a cutting pretreatment section for cutting planted grain culms and transporting the harvested grain culms toward a rear threshing device.

[0002]

2. Description of the Related Art In the above harvesting machine,
When the harvested grain culm is blocked during the harvesting process in the middle of the transportation route of the pre-mowing processing unit, and the grain culm transportation is obstructed, a safety measure for abnormality avoidance to detect that is adopted, Conventionally, as this safety means, for example, in the transport path for transporting the harvested grain culm by the sandwiching action of the sandwiching transport chain and the sandwiching member provided in the pre-mowing processing unit, elastic retreat displacement is performed according to the volume of the transported grain culm. Provided with a detection sensor that detects that the amount of displacement of the holding member is displaced by a set amount or more, and when this detection sensor detects that the grain culm volume is greater than the set amount, it is determined that grain culm is clogged. In some cases, the operator was able to determine that the grain culm was clogged by activating an alarm device or stopping the engine.

[0003]

However, in the above-mentioned conventional structure, it is difficult to set and adjust the displacement amount of the sandwiching member corresponding to the clogging of the grain culm, and the above-mentioned alarm operation is activated due to the clogging of the loose clamp. If you do so, depending on the work condition, there is a harmful effect that the alarm operation frequently works and the work efficiency decreases, and if the set amount is set to the large side, at the time when grain culm clogging is detected However, there was room for improvement due to the adverse effects such as severe clogging and difficulty in removing grain culms. It is an object of the present invention to eliminate the above-mentioned inconveniences and to quickly detect clogging of grain culm in the transport route and take a subsequent action promptly.

[0004]

The characteristic configuration of the first aspect of the present invention is, in the reaping harvester described at the beginning, a reaping operation state detection for detecting whether or not a reaping grain culm is conveyed in the pre-reaping processing unit. Means and threshing load detection means for detecting the drive load of the threshing device, and detects that the reaping work state detection means is a grain culm transport state, and threshing detected by the threshing load detection means A safety means for avoiding an abnormality that operates when the driving load on the device is smaller than a set value is provided. A characteristic configuration of the second invention is that the safety means is an alarm means. A characteristic configuration of the third invention is that the safety means is an engine stopping means for stopping the driving engine.

[0005]

According to the characteristic construction of the first aspect of the present invention, the mowing work culm is conveyed by the mowing work state detecting means when the planting culm is being mowed in the pre-mowing processing section while the machine body is traveling. Is detected. Then, when grain culm is clogged in the transport route, the harvested culm will interrupt the transport supply to the threshing device at the clogging point, so the threshing work load in the threshing device will be small and the drive load will be less than the set value. It is detected by the threshing load detection means. As a result, since the safety means for avoiding the abnormality operates, the operator can judge the jam state before the cut grain culm is continuously fed to the grain culm clogging part and the clogging becomes severe. According to the characteristic configuration of the second aspect of the invention, when the reaping work state detecting means detects the grain culm conveying state and the threshing drive load is smaller than the set value, the alarm is activated, so that the operator can recognize and before the clogging becomes severe. It is possible to take measures such as work for removing grain culm. According to the characteristic configuration of the third aspect of the invention, when the reaping work state detecting means detects the grain culm conveying state and the threshing drive load is smaller than the set value, the drive engine is stopped, so the reaping work is immediately stopped and the clogging part is blocked. On the other hand, it is possible to reliably prevent the cutting culm from being continuously fed and becoming severely clogged.

[0006]

Therefore, when clogging occurs in the cutting grain culm transport path, it is possible to reliably detect that the grain culm has clogged with a small time delay, and the clogging in the cutting pretreatment section can be detected. It became possible to prevent the harmful effects such as the reduction of work efficiency due to the harshness, which made the mowing work impossible and the work of removing clogged grain culms becoming difficult.

[0007]

Embodiments will be described below with reference to the drawings. Figure 3
Shows a combine as a reaper. In this combine, a threshing device 3 is mounted on a traveling machine body 2 provided with a pair of left and right crawler traveling devices 1, 1, and a mowing pretreatment section 4 is lifted and oscillated around a horizontal axis P by a hydraulic cylinder in the front section of the machine body. It is configured to be freely connected. The pre-mowing processing unit 4 raises the planted culm in a standing posture, a raising device 5, a reaping device 6 which cuts off the stock of the raised culm, and collects the harvested culms and conveys them backward. Auxiliary transporting device 7, and a vertical transporting device 9 for handing over the harvested grain culm to the feed chain 8 of the threshing device 3 while gradually laying it down.
And so on. When performing the mowing work while the machine body is traveling, the pre-crop processing unit 4 is automatically lifted and lowered so as to be maintained at a set height with respect to the ground, but the lift lever 10 provided in the machine control unit is manually operated. By doing so, it is possible to preferentially move up and down manually.

The vertical conveying device 9 includes a nipping and conveying device 9a for nipping and conveying the root side of the cut grain culm, a tip end locking and conveying device 9b for locking and conveying the tip end side of the cut grain culm, and a tip guide plate 9c.
And is configured to convey the cut culm from the auxiliary conveying device 7 in a vertical posture toward the rear of the machine body, and at the conveying end portion, change the posture to a sideways posture and deliver it to the feed chain 8. . Further, the vertical transfer device 9 is supported so as to be vertically swingable relative to the cutting pretreatment section 4 around the horizontal axis P on the end of the transfer side, and the auxiliary transfer device is moved in association with the vertical swing operation by the electric motor 14. The support position of the cut grain culm supplied from 7 is changed in the culm direction, and the handling depth in the threshing device 3 is changed and adjusted.

In the vertical conveying device 9, a pair of upper and lower culm length detecting sensors 21 and 22 for detecting the culm length are provided in the middle of the U-shaped frame 15 that bypasses the upper part of the grain culm conveying path to detect the culm length by acting on the tip of the cut grain culm. The control device 23 controls the drive of the electric motor 14 so that the grain ear tip is located in the middle of the detection sensors 21 and 22, and the handling depth is automatically controlled to an appropriate value. is there. Note that, as shown in FIG. 1, this automatic handling depth control operation detects the clutch-engaged state by the threshing switch 33 that detects that the power-on / off clutch lever 24 for the threshing device 3 is in the clutch-engaged state, and When the switch type stock sensor 25 (an example of a cutting operation state detecting means) for detecting whether or not the grain culm is supplied to the conveyance start end portion of the vertical conveyance device 9 maintains the grain culm detection state. Only the automatic control operation is configured to be performed.

A rotation speed detection sensor 27 for detecting the rotation speed of an engine 26 for driving the airframe, and a main clutch switch 28 for detecting that a main clutch interposed in a drive system for traveling the airframe is in a clutch-engaged state. A shift switch 29 for detecting that the main transmission is in the neutral position is provided, and the outputs thereof are configured to be input to the control device 23. As shown in the flowchart of FIG. In the case where the entering state is detected and the speed change switch 29 does not detect the neutral position, after the predetermined grain culm transport required time has elapsed after the stock origin sensor 25 detects that the grain culm is transported, and When it is detected by the rotation speed detection sensor 27 that the engine rotation speed is equal to or higher than the set value, the control device 23 causes the engine stop circuit 3 to operate. It is constructed so as to operate the [an example of an engine stopping unit]. That is, in the normal mowing work state, the load on the engine 26 is considered to be the sum of the traveling load on the crawler traveling device 1, the mowing load on the pre-mowing processing unit 4, and the threshing load on the threshing device 3, and the mowing work state. When the engine speed returns to a value equal to or higher than the set value, the harvested grain culm is jammed in the grain culm transport path, the harvested grain culm is not supplied to the threshing device 3, and the threshing device 3 is in a substantially unloaded state. It can be judged that the condition is close to. Therefore, the rotation speed detection sensor 27 constitutes the threshing load detection means. The variation status of the threshing load is configured to be displayed on the control panel by the bar-graph type display device 31, and when the engine speed becomes equal to or higher than the set value, the clogging state display lamp 32 [alarm means One example] is configured to be turned on.

[Other Embodiment] If the threshing drive load is equal to or less than the set value as in the above embodiment, the engine 26 is stopped instead of the structure in which the engine 26 is stopped and the alarm display lamp 32 is turned on. Alternatively, the alarm means may be activated, or only one of them may be adopted. The safety measures in the grain culm jamming state are not limited to the engine stop operation and the alarm operation, and other safety measures such as disengaging the traveling clutch to stop the aircraft traveling may be taken. As the threshing load detection means, in place of the configuration for detecting the engine speed as described above, for example, the threshing work load may be detected by detecting the drive torque of the drive shaft in the threshing device,
Further, the threshing work load may be detected by detecting the volume of the grain culm conveyed by the feed chain or the amount of the treated product in the threshing device. Further, as the reaping work state detecting means, instead of the switch type stock origin sensor, the stock origin side holding and conveying apparatus 9 in the vertical conveyance apparatus 9 is used.
A potentiometer type detection sensor for detecting the passing volume of the cut grain culm passing through a may be used.

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

[Brief description of drawings]

FIG. 1 is a control block diagram.

[Fig. 2] Control flowchart

FIG. 3 is a side view of the front part of the combine.

[Explanation of symbols]

 3 Threshing Device 4 Pre-Mowing Pretreatment Section 25 Mowing Work State Detecting Means 27 Threshing Load Detecting Means 30 Engine Stopping Means 32 Alarm Means

Claims (3)

[Claims] 1. A pre-cutting processing section (4) for cutting a planted grain culm and transporting the harvested grain culm toward a rear threshing device (3).
A harvesting and harvesting machine comprising: a harvesting operation state detecting means (25) for detecting whether or not a harvested culm is being conveyed in the pre-mowing processing section (4); and a threshing device (3). Threshing load detection means (27) for detecting drive load
And a drive load for the threshing device (3) detected by the threshing load detection means (27) when the reaping work state detection means (25) detects that the grain culm is being conveyed. A harvester equipped with safety measures for avoiding abnormalities that operate when smaller. 2. The harvesting machine according to claim 1, wherein the safety means is an alarm means (32). 3. The driving means (2)
The harvesting machine according to claim 1, which is an engine stopping means (30) for stopping 6).