JPH0246Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a reaping harvester, more specifically, the handling depth in the threshing device is automatically adjusted by adjusting the position of the reaped grain culm clamp on the conveying device based on the culm length detection result by the culm length detection sensor. The present invention relates to a reaping harvester, which is configured to adjust the grain culm and is equipped with a binding device for binding threshed grain culms.

In conventional reaping and harvesting machines of this type, the handling depth in the threshing device can be adjusted by adjusting the position of the reaping unit's conveyor device holding the harvested grain culm, based on the culm length detection result from the culm length detection sensor installed at the front of the machine. After that, the grain culms threshed by this threshing device are transported to the rear of the machine by a conveying device installed on one side of the machine, and then collected as waste straw by a binding device installed at the rear of the machine. It is configured to be bundled and released for each quantitative amount.

However, in the conventional configuration in which the grain culm holding position of the conveying device is immediately changed based on the fluctuation of the culm length detection result by the culm length detection sensor, the stock of waste straw bound by the bundling device is extremely gradually changed. This has the disadvantage that the waste straw becomes irregular and the post-processing of the bundled and discharged waste straw becomes troublesome.

The present invention has been developed in view of the above-mentioned circumstances, and its purpose is to immediately change the grain culm holding position of the conveying device in stages when there is a change in the culm length detected by the culm length detection sensor. The purpose is not to make the changes respond, but to make the responses as continuous as possible.

In order to achieve the above object, the reaping/harvesting machine according to the present invention is configured as described above, and when a change occurs in the culm length detection result by the sensor, the control response speed of the conveying device is adjusted for a predetermined period thereafter. A control device is provided that sets the speed at a slower speed, and sets the speed at a higher speed after the predetermined period of time has elapsed.
It has the following characteristics.

Due to the above characteristic structure, the following excellent effects have been achieved. In other words, even if there is a change in the culm length detection result, the conveying device is controlled to respond slowly over a predetermined period of time, so the handling depth control is performed continuously rather than in stages. Therefore, the stock alignment of the waste straw can be made as good as possible, and since the response speed is made faster after the predetermined time has elapsed, even with large changes in culm length, the overall As a result, we were able to make it sufficiently compatible without deteriorating the responsiveness of the system.

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

As shown in FIGS. 1 and 2, a reaping section 2 is disposed at the front of a traveling vehicle body having a crawler traveling device 1, and the waste straw after threshing is bundled into predetermined amounts and released at the rear of the vehicle body. A combine harvester as a reaping and harvesting machine is configured by providing a binding device 3.

The reaping section 2 includes a weeding tool 5 at the tip of its support frame 4, a pulling device 6 for pulling up grain culms introduced from the front, and a mowing device for reaping the grain culms pulled up by the pulling device 6. The clamping position of the blade 7 is automatically adjusted by the hydraulic cylinder 8 based on the culm length detection results of the introduced culm detection sensor S ₀ and the culm length detection sensors S ₁ and S ₂ provided at the front of the machine, and the blade is cut by the cutting blade 7. It is composed of a conveying device 9 that conveys grain culms to the upper side of the machine body.

Then, the grain culms transported to the upper part of the machine body by this transport device 9 are transported to a threshing device 11 by a feed chain 10 provided on one side of the machine body for threshing processing, and are processed by an endless rotation chain 12 in the machine body. The waste straw from the rotary chain 12 is conveyed rearward in a horizontal position and is supplied to the receiving port of the bundling device 3.

The binding device 3 includes a string supply section B having a string supply needle 14, etc. below the binding space A, and a string knotting section C having a string holder 15, a knot building 16, etc. above the binding space A. It is provided.

The waste straw from the endless rotary chain 12 is scraped and supplied into the bundling space A by a packer 18 along the guide bottom surface 17, and is bundled into predetermined amounts and discharged to the rear of the machine. There is.

The handling depth control mechanism will be explained below based on the block diagram shown in FIG. 3 and the flowchart shown in FIG.

Microcomputer 19 as a control device
is I/O port 20, timer 21, CPU 2
Detection signals from the sensors S ₀ , S ₁ , S ₂ provided at the front of the aircraft body are input to the CPU 22 via the I/O port 20 . And each of the sensors S ₀ , S ₁ , S ₂
Based on the combination of ON and OFF, a control signal is output from the I/O port 20 according to a program stored in the memory 23 in advance.

This control signal drives the electromagnetic valve 25 for driving the hydraulic cylinder 8 of the conveying device 9 via the buffer circuit 24, and changes the grain culm holding position of the conveying device 9 in accordance with the detected culm length. ,
Consequently, the handling depth in the threshing device 11 is controlled.

That is, when the culm detection sensor S ₀ ON detects that the grain culm reaping has started, handling depth control is started.

Then, the following control is performed corresponding to the combination of ON and OFF of the culm length sensors S ₁ and S ₂ .

When the sensor S ₁ is OFF, the CPU 22 sets the timer 21 for a predetermined period of time (for example, 1
A control signal for intermittently driving the electromagnetic valve 25 is output from the I/O port 20 until the grain culm clamping position of the conveying device 9 is changed to the deep handling side at a slow response speed until the grain culm clamping position has elapsed. Thereafter, after a predetermined period of time has elapsed, the electromagnetic valve 25 is continuously driven to change the clamping position to the deep handling side with a fast response speed.

Next, sensor S ₁ turns on and sensor S ₂ turns on.
If it is OFF, the driving of the electromagnetic valve 25 is stopped to maintain a constant handling depth.

Furthermore, when both sensors S ₁ and S ₂ are turned on, the timer 21 is set in the same manner as described above, and the electromagnetic valve 25 is intermittently driven in the reverse direction until a predetermined period of time (for example, 1 second) has elapsed. The grain culm holding position of the conveying device 9 is changed to the shallow handling side with a slow response speed. Thereafter, after a predetermined period of time has elapsed, the electromagnetic valve 25 is continuously driven to change the clamping position to the shallow handling side with a fast response speed.

In this way, when the culm length detection results of the culm length detection sensors S ₁ and S ₂ change, the transfer device 9 immediately
The grain culm clamping position of the grain culm is not changed at a high speed, but is changed slowly until a predetermined time elapses, so that the clamping position changes continuously and smoothly.

As a result, the stock value of the waste straw bundled and discharged by the bundling device 3 continues to change smoothly.
This is to prevent irregularities as much as possible.

Moreover, as mentioned above, after the predetermined time has elapsed, handling depth control is performed at the usual fast response speed, and large changes in the harvested grain culm can be adequately accommodated, so there will be no unhandled grain. .

Further, according to the present invention, the handling depth control does not respond at the normal speed immediately after the sensor S ₀ is turned on, so it is possible to prevent the handling depth from becoming discontinuous even at the beginning of mowing.

Note that the time for intermittently controlling the handling depth is not limited to the time exemplified in the embodiment, and may be changed depending on the traveling speed, for example.
It may be determined as appropriate.

Furthermore, the response speed may be set to different speeds depending on the changes in the deep handling side and the shallow handling side.

In the drawing, 26 is a hydraulic pump.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping and harvesting machine according to the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is an overall plan view of the combine, Fig. 3 is a block diagram of the control mechanism, and Fig. 4. is the flowchart. 2... Reaping section, 3... Binding device, 6... Pulling device, 8... Hydraulic cylinder, 9... Conveying device, 11
...Thresher, 19...Microcomputer,
S ₀ ... Introduced culm detection sensor, S ₁ , S ₂ ... Culm length detection sensor.

Claims (1)

[Scope of utility model registration request] The handling depth in the threshing device 11 is automatically adjusted by adjusting the position of the conveying device 9 holding the harvested grain culm based on the culm length detection results obtained by the culm length detection sensors S ₁ and S ₂ . , is a reaping harvester equipped with a binding device 3 for binding threshed grain culms, and when a fluctuation occurs in the culm length detection results by the sensors S ₁ and S ₂ , the following predetermined period of time is A reaping/harvesting machine characterized by being provided with a control device that sets the control response speed of the conveying device 9 to be slow and then sets it to be faster after the predetermined time has elapsed.