JPS5813309A - Combine - 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 relates to an improvement of a harvester having an automatic adjustment device for cutting height and cutting depth, and particularly when the cutting height adjustment speed is fast, the cutting height adjustment speed also increases. At the same time, the aim is to increase the speed and prevent unhandled items and clogging of the handling cylinder.

FIG. 1 is a perspective view of a conventional harvester, and FIG. 2 is a hydraulic circuit for adjusting cutting height and harvesting height.

As is clear from these figures, in the harvester,
Drive wheels (2), (2) provided on both sides of the lower part of the fuselage (1)
) are connected and driven by a prime mover (not shown) mounted on the fuselage (1), and a reaping section installed at the front of the fuselage, a cutting blade (5) of (3), and a threshing device (4) installed at the upper part of the fuselage. ) is also driven by the prime mover, and the driving wheels (
2), the machine is moved and the cutting blade (5) is driven to reap the planted grain culms. The harvested husk is lifted to the front of the threshing device (4) by the clamping and conveying device (6), and then transferred to the foot chain (7) installed on the side of the threshing device (4).
), and during this transportation, the husk is inserted into the threshing device (4) and threshed. In addition, the support member (8) that supports the cutting blade (5) is swung vertically with respect to the machine body to adjust the cutting height of the grain culm, and furthermore, the clamping and conveying device (
6) is moved in and out in the lateral direction with respect to the body (1) to adjust the amount of grain culm inserted into the handling barrel, that is, the amount of removal. The cutting height can be adjusted using the bite sensor installed at the bottom of the cutting section (3).
This is done by switching the direction of the solenoid valve 0υ in response to the height signal from these, and raising and lowering the cutting blade connected to the actuator 0υ. In addition, the threshing depth can be adjusted using the 3.
culm length detection sensors (20a), (20b), (2
The electromagnetic valve oat is actuated by the signal from 00, and the actuator (141) changes the inclination angle of the clamping and conveying device u (6) to change the insertion length of the culm into the handling barrel.

In addition, such automatic adjustment of the handling depth and cutting height is performed separately, and is performed at the start of automatic operation or when the IAI of the cutting height is adjusted.
If you want to temporarily raise and lower the KB manually when the KB is running automatically, you can do it at high speed using continuous drive, etc., but during normal reaping work, to avoid hunting etc., you can use intermittent drive or hydraulic This is done at low speed by adjusting the opening degree of a throttle valve installed in the system.

By the way, if the cutting height changes during automatic adjustment, the culm length of the cut culm will naturally change, so in order to keep the handling depth constant, adjust the detection method according to the cutting height adjustment speed. It is desirable to do so. In this regard, with conventional harvesters, the cutting height adjustment and handling depth adjustment were performed separately, so the response
This caused backlogs and blockages due to delays.

Therefore, an object of the present invention is to prevent the above-mentioned troubles and to automatically adjust the handling depth of the direct product f (f).

Next, embodiments embodying the present invention will be described in detail with reference to FIG. 3 and the subsequent drawings. FIG. 3 is a control circuit diagram for driving the harvester according to the present invention. In this case, a low speed state is created by intermittent driving.

In Figure 133, 051 is the solenoid valve 03 for adjusting the handling depth.
), (1ω is a control circuit for driving the solenoid valve (11) for adjusting the cutting height, and 0
η.

αFA, (191, column is the switch circuit, (21) is the power supply. Automatic switch for automatic adjustment of handling depth (to),
The first culm length detection switch (20a) and the off-delay circuit C4 are connected to the power supply (2υ) in series in this order, and the off-delay circuit Q (a) is further connected to the mono-multivibrator (c) through the (to the OK agate) is connected to the - input terminal of the - input terminal. The above mono multivibrator (
The normally open contact (5) of the second culm length detection switch (20b) connected to the off-delay circuit Pa in parallel with 20C) to the on-delay circuit (2). Other contacts of the second culm length detection switch (20b) @(
Normally closed) is connected to the -panel off-delay circuit (to), and the other ljA is connected to the on-delay circuit clli. The first culm length detection switch (20a) detects insertion of the culm into the handling barrel inlet, and the second culm length detection switch (20b)
) is activated while the third detection switch (20C) is inactive, indicating that the detection switch (20b) of 9J2 is in a good handling depth state. The third detection switch (20C
) is placed at the upper limit position, and if the grain culm is not in contact with the second detection switch (20b) because the crosspiece is too long,
Insert the grain culm into the handling barrel by activating solenoid valve 0 to the deep handling side, or if the grain culm is inserted too deep and the third detection switch (20C) is activated, to the shallow handling side. Adjust the length. The on-delay circuits (31a) and (31b) perform a smoothing function, and their respective output terminals are connected to diodes (31a) and (31b).
) (33a), (33b)
) is also connected to the input end of the The output terminal of the pulse generator □□□ is connected to the − input terminal of the above-mentioned OK agate
The output end of this gate () is connected to the input end of the AND gates (33a) and (33b). Then, both AND gates 33a) (33b) (7) The output terminals are resistors (34a), (34b), limit switches (35a), (35b), and switch circuits! 17)
, (Il [- connected to the cross plate inlenoid (36 m) and deep handling solenoid (36b) of the handling depth adjustment solenoid valve Q31. Limit switch (35 m), (3
5b) is a safety device that regulates the movement of the clamping and conveying device by the solenoid valve (13), and this limit switch (3511
), (35b) and the resistor (34K), a manual switch (37 sen (37 sen) connected to the power supply (21) between (34b)
37b) are connected to each other.

Next, the handling depth adjustment operation will be explained. After the automatic switch is turned on and the culm is inserted into the handling barrel, the first
The culm length detection switch (20) is turned ON.Lt when the insertion length of the culm is long (deep handling).

The second and third detection switches (20b) and (20C) are activated and the contacts (20C) are turned on. At the same time, the mono multivibrator (a) operates and sends a continuous signal for a certain period of time to the OR gate (to). An intermittent signal is sent from the pulse generator (support) through the on-delay circuit (c) and the diode (31a) to the agate phase], and a continuous signal from the mono-multivibrator (to) is also input, so from the start A continuous signal is sent to the AND game (33a) for a certain period of time, and an intermittent signal thereafter. Therefore, the sheet forming solenoid (26 m) operates continuously for a certain period of time after starting, and then intermittently after that. In this way, the contact point −
When is in the ON state, the contact - is OFF, so the deep handling solenoid (36b) does not operate. On the other hand, if the length of the grain culm inserted into the handling barrel is too short, the second detection switch (20b) will turn OFF, contact (5) will turn OFF, and contact (2) will turn ON, and at the time of starting, the
After that, the deep handling solenoid (36b) is driven intermittently. In the case of manual operation, it is performed by operating the manual switch (37λ) or (37b).

The automatic cutting height adjustment circuit is constructed as follows. That is, the hide sensor connected to the power supply (211) is connected to the three-man AND gates (40a) and (40b) via the ondelays (39&) and (39b), and this AND
Gates (40a) and (40b) are switch circuits (11
, ■ to the ascending solenoid (41m) and descending solenoid (41b) of the solenoid valve 011 for cutting height adjustment. The output terminals of ondelays (39a) and (39b) are further connected to diodes (42a) and (42b) +
Via pulse generator +4'! The output of this pulse generator is connected to the input of a two-man OR gate (441).The other input of this OR gate is connected to a reset set flip-flop. circuit (R5
, F, F, )+451 is connected to the output terminal of the mono multivibrator (0Q), and the output terminal of this mono multivibrator 0Q is connected to the off-delay circuit (451).
? 1 to the input terminal of the OR gate ((g)) of the handling depth adjustment circuit.

It is also connected to the input terminal of the mono multivibrator (4 [9's input terminal is the AND game] (40, (40b), (7)). F j・'IF) (yo, 8
□When the power reaches 5.2 bells, the q terminal becomes H level (
At this time, the condition is that the terminal changes from L level to ■ level), then the S terminal goes to II level, and when the k terminal goes to L level, the Q terminal goes to L level, and the S terminal is normally open. Automatic pushbutton (grounded via grip,
K terminal is inverter circuit 01 and diode (SOA)
, (50b) to a normally open manual switch (51m), (51b) connected in parallel to the power supply.

The manual switches (51 and (51b) are further connected to the raising and lowering solenoids (41) through the switch circuits and wires.
m) and (41b), and an off-delay circuit (
It is connected to the input terminal of 471. Also, (to) is a pilot lamp that indicates the automatic status, and is connected to the q terminal of the reset set flip-flop circuit (grip).

The cutting height adjustment operation is performed as follows. When automatic pushbutton +416 is turned on in the manual switch (51λ), (51b) OFr state (the terminal of the reset set flip-flop circuit is at H level), the S terminal becomes L level and the Q terminal becomes H level. Therefore, at the same time as the pilot lamp (support) lights up, the mono multivibrator (
4el is activated, and a continuous signal for a certain period of time is sent to the OR gate (4a
sent to. Also, depending on the height of the reaping device at that point, the rising side contact (53a) of the hide sensor (to)
Or the falling side contact (53b)) is turned on, and the rising signal (or falling signal) passes through the Beoside relay circuit (39m) (or (39b)') to the pulse generator (4:1 and ANI)
(40a) (or AND gate (40b)
) will be sent to. Therefore, the blade from the OR Age-f44) is generated at the time of startup, that is, when the mono-multivibrator (Tsukuda) is ON, a continuous signal is sent to the AND gate (4oa) and (40b), and when the mono-multivibrator 0 is turned OFF, a pulse is generated. An intermittent signal is sent from the instrument package 1, and in synchronization with this continuous or intermittent (high speed, low speed) mode, the ascending or descending solenoid (41a) or (41b) is driven in the continuous or intermittent mode. When the automatic cutting height adjustment is started in this way, the solenoid valve 011 is driven continuously (at high speed) for a certain period of time, but the mono-multivibrator (40 is used to adjust the cutting depth through an off-delay circuit). Since it is also connected to the OR gate (a) of the circuit,
While the solenoid valve αυ for cutting height adjustment is being driven continuously (at high speed), the 'Ni solenoid valve 0j for adjusting cutting depth is also driven continuously (at high speed). During automatic adjustment, press the manual switch (51st, (st
b) When i is turned on and the reaping m is raised and lowered manually (at high speed), a continuous signal is similarly sent to the OR gate (to), and the cutting depth is controlled at high speed. Then, the mono multi-vibrator turns off after a certain period of time, or the manual switch (51 or (51b)
) is turned off, the solenoid valve αD for cutting height 0M is driven intermittently (low speed) by the pulse signal from the pulse generator (431). Due to the intervention, the mono multi-vibrator unit and manual switch (511), (51b)
After that, it continues to be driven continuously (at high speed) for a certain period of time, after which it enters intermittent (low speed) operation by the pulse generator (2). This off-delay circuit 147) is connected from the cutting blade (hide sensor position M) to the threshing inlet (culm length detection sensor (20), (20b), (
This is to ensure continuous excitation time for the transport time of the culm up to Continuous (1G
The culms obtained in the intermittent (low speed) mode and the intermittent (low speed) mode are also adjusted in the intermittent (low speed) mode to prevent unhandling and clogging. In the embodiments described above, high-speed or low-speed driving is achieved by setting the driving speed to continuous or intermittent mode.
The high-speed or low-speed modes may be adjusted by adjusting the opening degree of a throttle valve provided in the hydraulic circuit connected to the hydraulic circuit connected to the hydraulic circuit 131.

As described above, the present invention is designed so that when the automatic cutting height adjustment device is driven at high speed, the automatic handling depth adjustment device is also driven at high speed. When the mowing height is adjusted at a high speed, the cutting depth is also adjusted at a high speed, so there is no delay in response between the two, and troubles due to leftover cutting or clogging can be prevented.

[Brief explanation of drawings]

Figures 1 and 2 show the conventional 8! FIG. 3 is a control circuit diagram of a harvesting machine according to an embodiment of the present invention. (Explanation of symbols) 2oa, 2ob, 20C--culm length detection switch,
32. 43...Pulse generator, to 2 44-OR gate, 33m, 33b, 40a. 40b...-AND gate, 13... Solenoid valve for adjusting depth of handling, 11... Solenoid valve for adjusting cutting height, 25. 46・
...Mono multivibrator, 38...Hide sensor, 511.51b...Manual switch. Patent Applicant Yanmar Agricultural Machinery Co., Ltd. Agent Patent Attorney Honjo Buyu Figure 1 M Page 1 Continuation @ Inventor Takashi Yamada 52 Yanmar Agricultural Machinery Co., Ltd., 16 Enmyoji Koza Kamata, Oyamazaki-cho, Otokuni-gun, Kyoto Prefecture

Claims (1)

[Claims] 1. In a harvester having an automatic cutting height adjustment device and an automatic cutting height adjustment device, the driving speed of both adjustment devices can be switched between high and low speeds. A harvesting machine characterized in that when the automatic adjustment device is driven at high speed, the automatic adjustment device for cutting edge is also driven at high speed.