JPS5851725B2 - reaping harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic handling depth change adjustment system that allows the tip side of the husk to be fed shallowly into the handling chamber based on an increase in the threshing load, and to be fed deeper into the handling chamber when the threshing load decreases. The present invention relates to a reaping harvester having a device.

In general, a method of directly detecting the culm length has been adopted to control the handling depth to supply a constant length of the shell culm tip side into the handling chamber regardless of changes in culm length. Means for automatically changing the handling depth based on load fluctuations has been proposed.

In other words, when the threshing load increases, control is performed to change the handling depth to the cross-cutting side where the load is low, and when the threshing load decreases, the handling depth is changed to the deep handling side where the load is high.

This means of changing the handling depth based on the load has the advantage that the load can be maintained approximately constant and it is easy to perform stable threshing processing.

However, with such control means, if the threshing load becomes too large, such as when harvesting wet husks, or if the threshing load becomes too low, such as when the harvest amount decreases during row combination, etc. This causes a problem in that the tip side portion fed into the handling chamber of the threshing device falls outside the permissible handling depth range, making it impossible to perform proper threshing.

The present invention aims to avoid such problems.

That is, the reaping and harvesting machine of the present invention is provided with a planking limit detection device or a deep handling limit detection device, or both of the limit detection devices for the supplied husk culm being threshed in the handling room, and the planking limit detection device Based on the detection results of the device, the vehicle speed change section is configured to operate to the vehicle speed deceleration side, and based on the detection results of the deep handling limit detection device, the vehicle speed change section is configured to operate to the vehicle speed increase side. Features.

In other words, when the supplied husk tip exceeds the crosscutting limit within the permissible removal range, the vehicle speed change section is operated to reduce the vehicle speed, reducing the vehicle speed, reducing the harvest amount, and threshing. The load is reduced, and based on the low threshing load, the handling depth changing device is changed to the deep handling side to correct the root depth within the appropriate range and avoid the occurrence of unhandled grain.

Conversely, when the tip of the supplied shell culm exceeds the deep handling limit, the vehicle speed is increased, the harvest amount is increased, and the threshing load is increased.
By changing the handling depth changing device to the side of planking, it is possible to prevent a large amount of straw waste from being generated due to excessively deep handling.

Therefore, compared to a method that changes the handling depth based on threshing load fluctuations and changes the handling depth by directly detecting the culm length, the threshing efficiency can be improved within the threshing processing capacity range, and the sorting work can be performed stably. While having the advantage of being able to easily maintain a stable threshing load state, it has been possible to avoid the problems inherent in this control technology, such as unhandled waste and the generation of a large amount of straw waste.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

FIG. 1 shows a combine harvester, in which a hoisting reaping section 2 is provided at the front of a traveling vehicle body 1, a threshing device 3 is provided at the top of the traveling vehicle body 1, and a feed chain 4 between the hoisting reaping section 2 and the threshing device 3 is provided. The rear transport device 5 is configured to transport the cut culms until the rear transport device 5 approaches, and while the traveling vehicle body 1 moves forward, the raised and reaped section 2 raises and reaps the planted culms, and transports them backwards. The harvested husk culm is transported by the device 5 toward the threshing device 3, and the threshing device 3 handles and threshes the harvested husks while having the feed chain 4 hold and transport the base of the harvested husks.

Then, the clamping and conveying device 6 located at the lowest stage of the rear conveying device 5 is oscillated approximately vertically centering on the rear side, thereby moving the sugar part from the position to be clamped by the feed chain 4. The handling depth adjustment mechanism 7 is configured so that the handling depth can be adjusted by changing the length of the handle.

Next, the structure of the automatic handling depth adjustment and vehicle speed control device will be explained based on FIG.

A threshing load detection device 10 is installed in the handling chamber of the threshing device 3 and detects the torque transmitted to the handling drum shaft 9a of the handling drum 9 to detect the handling drum load, and the detection results of this detection device 10 are compared. It is input to the threshing device 11 and compared with the appropriate threshing standard load, and if it is larger than the standard load, the hydraulic control valve V is activated.
, the hydraulic cylinder C is contracted, and the clamping and conveying device 6 is operated toward the cross-cutting side, and if the load is smaller than the standard load, it is operated in the deep handling direction, and the standard load is increased. In a certain range where the detection value of the detection device 10 and the detection value of the detection device 10 almost match, the handling depth is not changed and the current handling depth is maintained.

On the other hand, a hydraulic continuously variable speed change device 13 is incorporated in the crawler type traveling device 12 attached to the traveling body.
The vehicle speed is configured to be able to be changed to a desired speed by the continuously variable transmission device 13 in accordance with the amount of operation of a manual control lever 8 provided near the control section.

A friction clutch 15 is interposed between the manually operated lever 8 and the swing center shaft 14, and is operated by an electric motor M that is supplied to the handling chamber and is activated based on the detection result of a culm length detection device (described later). The vehicle speed is configured to be automatically changed by operating the friction clutch 15 and rotating the manual operation lever 8.

That is, a first sensor (cross board limit detection device) A is installed at a position corresponding to the lower limit of a certain root depth range at the upper position of the handling barrel 9 in the culm supply direction in the handling chamber, and a first sensor (crosspiece board limit detection device) A is installed at a position corresponding to the upper limit. 2 sensors (deep handling limit detection device) B are provided, and the contact signals of both sensors A and B are input to the calculator 16, and both sensors A are connected.

When B is emitting a signal that it is in contact with the tip of the culm,
The motor M is rotated in the normal direction to generate a signal to operate the vehicle speed change device 17 to increase the vehicle speed, and when both sensors A and B are not emitting contact signals, the motor M is rotated in the reverse direction to generate the signal to operate the vehicle speed change device 17 to increase the vehicle speed. 17 to the deceleration side, and when only the first sensor A is emitting a contact signal, the rotation of the motor M is stopped and the current vehicle speed is maintained without operating the vehicle speed change device 17. (Second
(see figure).

According to such a configuration, no matter how the handling depth is changed, the handling depth is automatically changed so that the handling depth becomes appropriate depending on the threshing load value. When the tip of the culm exceeds the upper limit of the proper handling depth range, the vehicle speed is automatically increased to increase the yield, increase the threshing load, and thus correct the planing direction.

In addition, when the tip of the husk exceeds the lower limit of the appropriate handling depth range, the vehicle speed is automatically reduced to reduce the harvest amount and the threshing load, resulting in a correction in the direction of deeper handling. .

When the tip of the grain is located between the first and second sensors A and B and within the allowable handling depth range, vehicle speed control is not performed and the handling depth is changed solely according to the threshing load. It is possible.

Although the torque transmitted to the handling drum shaft is detected as a means for detecting the threshing load, the threshing load may also be detected by detecting the number of rotations of the handling drum shaft.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings illustrate embodiments of the reaping harvester according to the present invention,
Fig. 1 is a side view of the combine harvester, Fig. 2 is an operating system diagram, and Fig. 3 is a diagram showing the operation. 17... Vehicle speed change device, A... Cross board limit detection device, B... Deep handling limit detection device.

Claims (1)

[Claims] 1. In a reaping harvester having an automatic handling depth change adjustment device that allows the shell culm tip side portion to be fed shallowly into the handling chamber based on an increase in the threshing load, and to feed it deeper into the handling chamber when the threshing load decreases, the above-mentioned handling A boarding limit detecting device A or a deep handling limit detecting device B, or both limit detecting devices A and B, are provided for the supplied shell culm that is threshed indoors, and the detection result of the boarding limit detecting device A is Based on the detection result of the deep handling limit detection device B, the vehicle speed change section 17 is operated to the vehicle speed deceleration side, and based on the detection result of the deep handling limit detection device B, the vehicle speed change section 17 is operated to the vehicle speed increase side. Reaping harvester.