JPS593693Y2 - combine - Google Patents

Description

[Detailed description of the invention] This invention is based on the detection results by the threshing load detection device.
A first control mechanism that automatically increases or decreases the amount of husks inserted into the threshing device in order to maintain this detected value within a set range, and a drive that follows the row of planted culms based on the detection of the presence of the reaped culms. The present invention relates to a combine harvester provided with a second control mechanism for automatic steering control.

If the above-mentioned combine harvester is operated with the automatic steering control mechanism turned on other than when mowing, there is a risk that the steering will be activated unexpectedly due to grass, etc., resulting in a collision or falling accident. It has been proposed to add a shell culm presence/absence detection mechanism to automatically turn on and off the direction control mechanism, but this has the drawback of increasing costs due to the addition of the detection mechanism.

The present invention was developed in view of the above circumstances, and by effectively and rationally utilizing the originally provided mechanism, it is possible to automatically control automatic steering by determining whether or not it is time for reaping work. The purpose is to turn the mechanism on and off, thereby minimizing cost increases.

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

The crawler-type traveling devices 1, 1 are attached to the fuselage, and the pre-processing section 5, which consists of a culm lifting device 2, a reaping device 3, and a cut culm conveying device 4, is rotated up and down around the horizontal axis at the front of the fuselage. A threshing device 6 is mounted at the rear of the machine, and a feed chain 7 attached to the threshing device 6 transfers the cut husk from the conveying device 4 to its stock. Inheriting the root part, the tip part is supplied to the threshing device 6 for threshing processing, and the conveying device 4 is configured to be movable by a hydraulic cylinder 8, and the culm is delivered to the feed chain 7. The handling depth changing device 9 is configured to change the position and thereby increase or decrease the amount of husk inserted into the threshing device 6, and is configured to pack the threshed grain into bags. This is a combine harvester for reaping and threshing.

The crawler-type left and right traveling devices 1, 1 have a hydraulic continuously variable transmission device 10 that allows switching between forward and backward travel and the traveling speed to be configured steplessly, and is further provided with a steering device 11 to control the traveling speed. The device 1 or switching on/off of the driving force to the device 1 allows the machine to run in any direction.

A threshing load detection device 13 is disposed on the handling barrel shaft 12 of the threshing device 6 to detect the threshing load by detecting the transmitted torque from the engine, and the detection result of this detection device 13 is input to the comparator 14. If the load is larger than the standard load, a signal is issued to operate the hydraulic control valve V to the contraction side of the hydraulic cylinder 8 for changing the handling depth. If the load is smaller than that, a signal is issued to operate the control valve V in the opposite direction, and when the load matches the reference load, a signal is issued to stop the operation. Threshing device 6 to be maintained within
A first control mechanism 18 is configured to automatically increase/decrease the amount of culm insertion into the culm.

The branching rods 15, 15 that support the shell culm lifting device 2 at their lower ends are provided with sensors S, S for detecting the relative position between the body and the planted shell culm. The steering device 9 links the sensors S and S to the steering device 11 so that the sensor S or the culm does not come into contact with the sensor S or the culm when the rocking motion of the sensor S contacts the planted culm. The second control mechanism 1 is activated to cause the aircraft to follow the row of planted culms.
It consists of 6.

The load detection device 13 is configured to detect a load that is slightly higher than a relatively low set value from a no-load state,
It is configured to detect that even a slight culm has been inserted into the threshing device 6 and the working machine is substantially in the harvesting state.

This low load detection mechanism is connected in series to the steering device 11 as a starting switch (mechanism) Sa, and the starting switch Sa is connected in series to the steering device 11.
The steering device 11 is configured to be operable only when the steering device 11 is in a large operation,
Even if the steering sensor S or S is activated when there is no husk in the threshing device 6, the steering device 11 is not activated, and the structure is configured so that the steering device 11 is not accidentally hit during non-harvesting travel. be.

17 in the figure is a vehicle speed control device, and a manual operation lever 19
The vehicle speed is automatically reduced based on the detection result of the cross-cutting limit detection device A installed in the threshing device 6, and the detection result of the deep handling limit detection device B. It is equipped with an automatic operation system that increases vehicle speed.

In summary, the present invention, in the combine harvester described at the beginning, automatically and reversibly controls the mechanism for deactivating the second control mechanism and the load detection device when the latter detects a load equal to or higher than a relatively low set value. The second control mechanism is preferably linked to the operating state.

In other words, by using a load detection device installed to stabilize the threshing load in the threshing device, it is possible to reliably determine that the reaping operation is in progress by detecting a load that is higher than a relatively low set value. Based on this detection result, the automatic steering control mechanism is automatically activated, making it possible to reduce costs compared to methods such as installing a special start switch in the middle of the stem culm transport route. Ta.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the combine harvester according to the present invention,
FIG. 1 is a side view, and FIG. 2 is a system diagram showing the relationship between the traveling device, the steering sensor, and the control system. 6... Threshing device, 13... Threshing load detection device, 16... Second control mechanism, 18...
...First control mechanism, Sa...Start switch (mechanism).

Claims (1)

[Scope of utility model registration request] A first control mechanism 18 that automatically increases or decreases the amount of shell culm inserted into the threshing device 6, based on the detection result by the threshing load detection device 13, so that the detected value is maintained within a set range;
The combine harvester is provided with a second control mechanism 16 for automatically controlling the steering to follow a row of planted culms based on the detection of the presence of reaped culms, and the second control mechanism 16 is deactivated. The second control mechanism 16 is preferably brought into operation automatically and reversibly when the latter detects a load equal to or higher than a relatively low set value between the mechanism and the load detection device 13. combine.