JPS58129912A - Combine cutting height control mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mowing machine S which can be raised and lowered freely (by means of a rotary lever) on a traveling vehicle body in order to switch between a working state and a non-working state, and also provides a reaping section S that can be raised and lowered freely (by means of a machine lever) in order to switch between a working state and a non-working state. A sensor 1 is provided to detect the ground level, and based on the export ground level from the previous & 1st day, the ground level t of the harvest capital is maintained at Vcm within the set range. , a control mechanism that automatically operates the drive mechanism.

and a switching mechanism for switching the control mechanism between an operating state and a non-operating state, and a manual operating mechanism for operating the moving mechanism with priority over the control mechanism. Related to cutting height control mechanism.

In the above method, when moving to reap while controlling the cutting height using the control mechanism, the manual operation mechanism is used to forcibly raise the reaping section when turning on the headland.
In the conventional model, the 12JJ operation mechanism is raised and
・Although it is possible to raise the reaping section with priority over the control mechanism, it is operated manually. *When the structure is returned to the neutral position, the M lowering mechanism is activated based on the bias & C from the sensor, and the reaping section is lowered all at once. So, in order to deal with it,
Conventionally, in general, +MJ shooting f'PdA until the turning path r5
Either continue to maintain the control mechanism in the raised operation state, or switch the control mechanism to the inactive state with the switching mechanism with the reaping section raised to the height required for turning, and lower the reaping section regardless of the signal from the sensor. Next, try to stop it.

In the former case, it takes a lot of effort to maintain the ascending operation.
Not only does it WI, but the reaping part continues to rise to a higher position than necessary, and after turning IIT, the Kl
! There was a drawback that it took time to lower the target height in the IIIa mechanism.

On the other hand, in the latter case, it is time-consuming to operate the switching mechanism, and after the turning is completed, the -1 mechanism is not activated.
There was a drawback that the driver forgot to switch to the "i" mode and the vehicle would continue to reap until "i" without being controlled in any way.

In view of the above-mentioned points, the present invention makes it possible to easily maintain the reaping part in the raised position in the #1 corner on the headland, and also makes it possible to easily maintain the reaping part in the raised position. The object of the present invention is to enable the O reaping section to be lowered quickly to the target height by the control mechanism after #Ir. 1. In order to achieve the above object, the present invention provides a cutting height control mechanism for a combine harvester, in which the manual operation mechanism reduces the setting of the cutting height and raises it to a non-working state level. A control release mechanism is provided in the switching mechanism so that the control mechanism becomes inactive as the reaping fI! h is placed in a non-working state by the manual operation mechanism, and Belka et al.
A discriminating mechanism is provided to detect a state in which the control mechanism lowers the height to a target height lower than the set height, and the discriminating mechanism and the lb11m release 11#1 are operated until the reaping section is lowered to the target height. The switching mechanism is operatively connected to the control mechanism 1 so as to maintain the operating state, and the control mechanism and the control release mechanism are connected to the drive mechanism, The apparatus is characterized in that the lowering speed of the reaping part (1) is linked such that when the brake release mechanism is in a sudden operating state, the lowering speed is greater than that when the control mechanism is in an operating state.

In other words, when the reaping section is raised by the manual operation mechanism, as the reaping section exceeds the set height 4, the control mechanism is suddenly switched to the inactive state, and when the reaping section is raised to the required axis when turning, Even when the manual operation mechanism was set to the neutral position, the control mechanism did not operate, and the upward operation state was suddenly maintained and the situation continued.
It is now possible to easily maintain the reaping position of 1 It - rising position without operating the switching mechanism or any other operation.
Moreover, if the reaping part exceeds the set height and rises to the non-working part level, then the reaping ST will stop rising at any position and the reaping II will rise above the d6 position and the turning will be completed. This eliminates the drawback that it takes seven minutes to descend, and J! #i,
When the reaping section is lowered after turning, the control mechanism is automatically switched to the operating state when the reaping section is lowered to the target height t by the control mechanism. Even if you forget, you will be able to avoid it.

Moreover, the turn [1! Since the lowering to the target height by the control mechanism after harvesting is performed at a higher speed than in the case of lowering by the normal control mechanism, the reaping part can be quickly restored to the target height, and the turning at the headland is completed. This makes it possible to shorten the time it takes to resume reaping and improve work performance.

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

A raising device (l) that triggers the planting, a reaping device (l) that reaps the raised grain culm, and a feed chain (3) that changes its posture to a sideways posture while conveying the harvested grain culm. A reaping unit (6) consisting of a conveying device (4) that delivers the harvested husks to the culm, and a threshing device (6) that performs threshing while being held and conveyed by a feed chain fat on the reaped husk, are connected to a crawler traveling M M 171.
and a control section (8), which are mounted on a nine-vehicle vehicle body, thereby forming a combine harvester.

The frame (9) of the reaping section (-) is pivotally connected to the vehicle body so as to be able to swing up and down around one circumference of the center IP facing left and right of the machine, and the drive mechanism is connected between the frame (9) and the traveling vehicle body. As an example, the hydraulic cylinder scream is interlocked and connected, and the cylinder (l
(2) The structure is such that the reaping s (Il') is moved up and down by the expansion and contraction of (2).

A transmitter (13) for transmitting ultrasonic waves 1 and a receiver-1 for receiving ultrasonic waves are installed on the nine pillars I installed in the seven frames (9).
and 1. Act) An ultrasonic sensor consisting of a transducer 04 is installed, and the ultrasonic wave is emitted from the transmitter towards the surface, and the ultrasonic wave reflected from the ground is stopped, and the difference between the time of transmission and reception is It is configured to detect the height above the ground of the iJK reaping section based on the time difference.

A signal from the arithmetic unit section of the ultrasonic sensor 1 (151K) and a signal from the IIl & constant sas for setting the target height are input to the comparison circuit, and a command signal is sent to the operation circuit (2) based on the comparison result. Input and operation - Path I, control pulp for the hydraulic cylinder (II automatic #
It is configured so that it can be operated in a
1) The cutting section (
6) Automatically drive the mowing height to swing up and down 4
I■The organization is as follows.

A manual operation circuit S@7 was established in addition to the operation circuit I.
The hand #operation mechanism @ has been installed so that the artificial lifting and lowering of the IX section (bang) can be done with priority over the 1st unit.

In the control mechanism (2), the ratio Il! A signal from the device Uη to the operating circuit FI & (to) [Connect the disconnect circuit and operate the hydraulic cylinder based on the sender, regardless of the detection ground level of the sensor (to). , the switching machine 111c allows the hydraulic cylinder to be activated and switched to non-controlled mode! lt-configuration.
For example, when cutting perpendicular to the general culm rows, so-called stacking runs, or when the field is extremely uneven, there are many disturbances to the sensor (to), and the cutting height control is adversely affected. In case of any inconvenience, operate u1 operation J4 (241) to switch to the control @@ mechanism jt inactive state, and manually operate the reaping part (6) up and down using the manual operation device m@. □ The reaping section (-) is set at the horizontal position ti + tA based on the pivoting angle of the reaping section Ix section fil to the 7th frame (9).
A potentiometer (2) is provided to detect the height above the ground.
glv from that potentiometer and the reaping part (-)
The boundary between the reaping work state level and the turning on the headland ◆ 0 bowl work state level ! ! If the set height t is exceeded by (to), the input is made with the finger,
Then, operate 141#l141(2) to cut the cutting height to 11.
11, when turning on a headland, the manual operating device 4111@ is raised to exceed the set point 7t^sat, and the control mechanism 31 is set to the non-braking state 4. Switch, hand #operation mechanism @ to neutral operation state 1i1K
Ji even if reaping Is 11) is 1IIIl preparation mechanism (ai
The control release mechanism @ is configured so that it does not fall due to K. 5 The above first & constant! The signal from potentiometer 1 (to) and the signal from potentiometer (2) are input to the comparator (to), and the height from the ground relative to the horizontal (l meeting standard) of the cutting Ijx section is determined by the S-th setting a (
1IIl @ Iso 411■
The first & fixed in! The K11lj separate structure @Ttja is configured to determine whether the target height has been reached by i (to).
From the signal indicating that the zone has been lowered and the detector (to), the mowing section T
Compare the signals indicating that I) was at the non-harvesting sea bream b level and input IL + Hc! It is configured to detect a foreshadowing line dropped from the rice bowl work state level to the eye 4sMI by the 1-crop mechanism (2).

From the operation circuit (to) for ltl Ki I/J Kaiso Construction 1,
When the control 411 mechanism I is in the inactive state, that is, when the release mechanism (support) is in the active state, the IQ&i:J operating circuit for Citrol pulp 1 (
Circuit WK that operates the descending speed changing device attached to (to)
Input the i-order bias and calculate the lower peak arrest of the MXg i61.
The structure of the IIIIJ control structure [IIIIVC] is designed to increase the lowering speed. And 1
Manual operation mai1221, -8 switching mechanism (2) operation circuit (to), and l! ! During the lowering operation using the ML and hand jg17, the control release mechanism (2) is maintained in the operating state 1 even if the reaping part (6) exceeds the set height of 5 and descends to the non-working level. , and Section 1-j Part 1a
At Jjag, when the mower is lowered to the target height and the next condition is detected, a switch to switch the control ps off based on the signal from the comparator. The mechanism (to) is suddenly switched to a non-operating state, and after the turning is completed, reaping @ (In lowering Il, reaping II
(I) is designed to be quickly lowered to the target height by the Taigoki S-.

-The above-mentioned descending progress changing device- can be used to control the control pulp (such as changing the timing of the pulse signal for lowering VL, or changing the top of one pulse, etc.).
llt) f form is EiT function.

The present invention can be applied to Ktjl when an ultrasonic type sensor Q51 is replaced with a cage type sensor.

[Brief explanation of drawings]

The drawings are original W! A uniform implementation of the cutting height control mechanism of the combine harvester according to J4 is illustrated, and FIG. 1 is a partially omitted overall Hm diagram of the combine harvester, and FIG. 1 is a block diagram showing the control mechanism. fit... Reaping section, -... Drive mechanism,
(15...Sensor, -...Karitaka business card-mechanism, ■...Manual operation IIA@, -...
...Switching mechanism, (2)... Control release mechanism, -.
...Discrimination mechanism

Claims (1)

[Claims] A driving mechanism (1 (m) capable of mowing freely up and down by mowing fxfM5i6+
In addition, a sensor 1151 is installed at the −θ period reaping section fi+ to output the ground level tw.
:/The reaping section 1 based on the ground level detected by the siren tune.
1 to keep the ground level at t+1 within the set range.
Control mechanism 13j that automatically operates the 10th generation drive mechanism scream
At the same time, the control mechanism (1) is equipped with a switching mechanism for switching between operating state and non-operating state, and a manual operation mechanism for driving the drive mechanism (1) to the control mechanism (1) for operation. Cutting height of 9 combine harvesters with c21 attached IIJN
In the hawk structure, the reaping part (6) is raised to the non-working state trace level by the -θ manual WJ operating mechanism @ beyond the set height. a control release mechanism (211) that operates the switching mechanism (2) so that the switching mechanism (2) becomes abrupt;
In addition to providing gaLk! , the manual operation mechanism (2) lowers the level from the non-working state trace level to the target height by the controller, 411■, which is lower than the set height and detects the round shape. Setting 1#
Ii-J separate mechanism (to) and the 11M111# Jorei Oval (
2) are interlocked and connected in such a manner that the switching mechanism (to) is activated so that the distribution control mechanism (tnt) suddenly remains in the inactive state until the reaping section descends to the target height; And, - the above-mentioned drive mechanism 1111! - Hitotsubashi Hajime and the above-mentioned release mechanism (to), so that the descending speed with respect to the reaping gfIl is the same as in the operation state of the control mechanism in the production of the release mechanism (2) The combine harvester's cutting speed 111 control mechanism is specially designed to be linked to increase the cutting speed.