JPS5881711A - Speed control apparatus of 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 a vehicle speed control device for a combine harvester that is configured to automatically control a traveling transmission based on a work load detection result so as to maintain a work load within a set range. be.

Prior to the above-mentioned control device, before reaping! & The vehicle speed control is configured to be activated based on the detection of the introduction of a shell culm, and the vehicle speed control is automatically stopped when the aircraft exits the headland. During the reaping process, a conveyance trouble occurs in the reaping section #I, the machine stops traveling, and when the machine starts traveling again after the trouble is resolved, the following inconveniences may occur.

In other words, when the above trouble occurs, the machine is stopped and the clutch that transmits the power to the pre-reaping processing section is disengaged.
In this case, it is common for the threshing device to be activated. Therefore, while the trouble is resolved in this way, the processing within threshing*1 progresses, and the threshing work load is greatly reduced. On the other hand, since the operation of the reaping pre-processing section is stopped, the culm introduction state s#f is maintained, and when forward travel is resumed in this state, the vehicle speed control is immediately activated to cope with the reduced load. This was dangerous as speed increase control was performed.

SUMMARY OF THE INVENTION The present invention is aimed at solving such inconveniences, and in the vehicle speed control device I having the above-mentioned configuration, the shift lever of the transmission device is configured to be operable with priority over vehicle speed control. At the same time, a sensor detects whether this gear shift lever has a single gear shift JRK, a sensor detects that the threshing clutch is engaged, and a sensor detects whether the reaping #I is also equipped with a WBK culm. A sensor is provided to detect that the transmission clubch to the annulus is engaged even before reaping, the shift lever is in the forward shift M, the centimeter detects the presence of a culm, and the sensor detects the presence of the culm. If we set the AND condition for activating the vehicle speed control to detect that the clutch is engaged and the automatic control start switch is turned on, then from the time when these conditions are met, the travel progress for the set time and the set distance is calculated. The present invention is characterized in that the vehicle speed control is configured so that activation of the vehicle speed control is started later.

In other words, when forward travel is started with the husk still introduced in the pre-harvesting I&N section and the threshing load greatly reduced, vehicle speed control is not performed immediately;
At the time of setting, the vehicle was set manually and traveled at nine speeds, and only after the husk was supplied to the threshing device and the load increased to a1, vehicle speed control was performed for the first time, and the vehicle could not travel forward as before. Immediately after restarting, rapid speed increase control was carried out without any problems, and work could be resumed safely.

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

Figure @1 is an overall side view schematically showing the combine harvester,
A threshing device (3), an engine 14), a cockpit and a control tower (6) are connected to a machine platform (2) equipped with left and right crawler traveling devices tll, +1), and a multi-row Raise the planted culm to the vertical position for reaping s t
ty+..., a cutting device +81 that cuts the base of the raised culm, a conveying device (1) that merges the multi-rowed culm
1) The combined culms are transported backwards and upwards, and the threshing device +!
The reaping pre-processing unit (Uta) is equipped with a transport device Wul, etc., which delivers the feed chain (IO) along the IIK in a sideways position, etc. It is connected so that it can swing up and down.

The power from the engine 1 (4) is branched into two systems,
One branched power is transmitted to the threshing device (3), the accompanying feed chain, the waste straw conveying device I, and the cutter (I!9) via the threshing clutch ll'.
The other branched power is a hydraulic continuously variable transmission consisting of a variable-volume hydraulic pump O@, which can switch the pressure oil discharge direction forward and reverse and continuously change the discharge oil amount, and a constant-displacement hydraulic motor gη. A part of the speed change rotation output from the speed change device (l instant) is input to the device (H・-・T), and a part of the speed change rotation output from the speed change device
In addition to being input to the transmission case 1), another part of the variable speed rotational output is transmitted to each GT crease of the reaping pre-processing section via the reaping latch.

- The above-mentioned transmission device +Ill can be operated to change speed manually using a speed change lever (211), and can also be controlled to automatically change speed according to the threshing work load.Next, automatic vehicle speed control will be explained.

In the input section of the handling cylinder equipped with the threshing device 111K,
A sensor (S8) is provided that simultaneously detects the handling cylinder torque and the handling cylinder rotational speed separately as pulse signals, and a vehicle speed sensor (S8) that generates a number of pulses proportional to the rotational speed is installed on the input shaft of the mission case Ql. ), and the output from each sensor (81), (8,) is connected to the handling trunk torque measurement circuit (2), the handling trunk turning fin arresting measurement circuit-1, and the vehicle shielding measurement circuit (to ) K is input, and the handling cylinder torque (1), handling cylinder rotation speed ■, and vehicle speed are measured.
Also, what is the measured barrel torque ■ and rotating speed of the barrel ■ when determining the load on the barrel? At step 2, the handling trunk load is determined through comprehensive comparison as described below, and based on this determination result, the next vehicle speed determination circuit determines the appropriate vehicle speed for the current handling trunk load, that is, the target vehicle speed (V, ) is determined. Then, the detected actual vehicle speed M and the target vehicle speed (vo) are compared by the comparison/discrimination circuit @IIK, and both vehicles 1 (V), ff are compared.
, ) is determined, and based on this determination result, the forward/reverse motor for automatically operating the gear shift lever of the transmission device G is controlled to determine the actual vehicle speed (V1f vehicle speed (V
・) K is brought closer.

A friction transmission device is interposed between the speed change lever (Inc.) and the motor, so that manual speed change can be performed preferentially regardless of the motor.

Next, the handling torso load rank W! The function of J (to) will be explained.

Figure @3 is a diagram showing the ranks for determining the load on the handling cylinder, and the range of fluctuation in the rotational speed of the handling cylinder is V@speed (n) when no load is applied.
, ) by the set amount (1-sr), (Δi
xJ, (Aa*) is preliminarily divided into multiple stages (4 stages in the example) by WC9 (A, ), (A,
)..., and the handling cylinder torque fluctuation range is set in advance by a set amount difference (Δ1) based on a preset value (t, ).
+), (Δts) are pre-divided into K ranks (BJ, (Bs)) in multiple stages (4 stages in the example), and the overlapping rank group of both ranks is divided into multiple stages (7 stages) based on the magnitude of load. Classified into ranks (C,).

(C-)...In other words, the load on the barrel is classified into ranks based on the product of rotational speed and torque.

Then, the handling cylinder rotational speed (goods) and handling cylinder torque r:rJ detected as described above are ranked (AI).

(IL) By comparing K, the handling torso load rank (
C3)..., it is determined whether it belongs to i.

Here, as the handling trunk load rank (C1) and 0 rolling rank (C,)Fi, the appropriate load rank indicates that vehicle speed increase/deceleration is not possible.
The lower load side rank (C,) is lower than this.

In (C1), the vehicle speed is increased, and the ranks (C,), (C,), (C,), (ct
) then decrease the vehicle speed. Also, each rank for speed increase (C,), (C,) and each rank for deceleration (C,)
, (C,) , (C・) , (C,) dogs I
lc is the target vehicle speed correction amount (Δv, ), (ΔV0.)...
is set in advance, and the previous target vehicle speed (V) is adjusted to increase or decrease using the actual detected rotational speed (2) and the torque determination circuit (-).

The new target vehicle speed (V,)KN is compared with the actual detected vehicle speed M.

In addition, when starting the reaping work, manually operate the KFi gear shift lever (incorporated) to select the desired vehicle speed, and then the actual vehicle speed at the time the vehicle speed control is activated is set as the initial target vehicle speed.
The target vehicle speed will be updated sequentially as the load is detected.

Further, the above-mentioned automobile speed control is performed only under nine predetermined conditions.

Also, before reaping, a grain culm presence/absence detecting sensor (S,) is provided which is activated by contacting the base of the KFi culm near the merging point of the merging conveyor device (-) for the ring culm. Then, there is a sensor (S4) for detecting whether the swinging base end KFi of the gear shift lever is in the neutral (ml), forward gear shift range (f), or reverse gear shift range (r). is provided, and in the vicinity of the important operating lever of the threshing clutch 11s and the on/off operating lever of the reaping latch, sensors (S, ) and (8) are provided to detect whether the clutch is engaged. are arranged respectively.

Then, the automatic control start switch (S,) is turned on (ON).
), the gear shift lever is in the forward gear range (f) K, the sensor (Sl) fully detects the presence of the culm (ON), and both clutch sensors (S, ) and (S, -) are in the clutch position. It is conditioned that the vehicle speed control is performed only when the vehicle is in the vertical position.

Also, even if all of these AND conditions are satisfied, #f
No control is performed, and when set by a timer, 1lIl(1
) (several seconds if it falls) has elapsed before the control is started.

According to the above configuration, if a trouble such as transporting grain culms occurs during reaping work with vehicle speed control, the gear shift lever 3tJ
Return to neutral (n)K, stop the aircraft, and take steps to resolve the problem. In this case, there will be no output from the transmission (1~), so even if you leave the reaping latch IN4+ engaged, the reaping processing unit u!Ort will stop, and therefore the grain culms in the front four rings will stop, and the sensor (S,) is maintained as existence detection (ON) K. Also, in such a case, in order not to disengage the threshing clutch, the general millet supply of 1lff Saoribe Shikan et al. Leave I without taking it all
R9I&R will continue, and the work load will be reduced to almost no load during troubleshooting.

In case of force, please turn the gear shift lever to resume work.
to neutral (forward shift from nl* (When moving to fj, all the conditions for vehicle speed control are met immediately, but vehicle speed control can actually be started only after the vehicle has traveled for a set time (1) from the point when the conditions are satisfied. Then, in this darkness, the grain culms are removed.
k5N-position (3)K supplied.

Therefore, when the vehicle speed control is restarted, the threshing load has been appropriately increased, so no sudden speed increase control is performed.

In addition, it is also possible to start the control after all cents (Sa)...(S,) satisfy the vehicle speed control conditions and have traveled a set distance; in this case, The travel distance can be obtained by integrating the detected vehicle relationship.

[Brief explanation of the drawing]

Figure #J illustrates the implementation of the vehicle speed control device for a combine harvester according to the present invention, Figure 1 is a schematic side view of the entire combine, Figure 2 is a configuration diagram of the control mechanism, and Figure 3 is the threshing work load. !
It is a rank diagram for I4J. ttn...Transmission device for traveling, Yuan...Shift lever, ato...Thresholding clutch, 轡...Reaping pre-processing device, 1...Reaping clutch, (S .)...Using culm presence/absence detection sensor f = , (Ss)...l
'jl Lehar position detection sensor, (S.)...
Threshing clutch sensor, (S.) Old...Kari Jfi clutch sensor, (S,)...Automatic control #Ia start switch, (f)...Forward transmission island

Claims (1)

[Scope of Claims] A vehicle speed side m device for a combine harvester configured to automatically control a traveling transmission (IF4) based on a work load detection result so as to maintain a work load within a set range, the speed change device comprising: The gear shift lever PI) of ¥1fOI4 can be operated with priority over the vehicle speed control, and a sensor (S,) is installed to detect whether or not this gear shift lever @1 is in the forward gear shift range. Sensor (S,) that detects that clutch a is engaged, reaping #processing IHdK
A sensor (S,
), a sensor (S, ) is provided for detecting that a clutch wire for transmission to the reaping pre-processing section is engaged, and the shift lever 40 is in forward gear* (f) K is provided, and the sensor (S, ) detects the presence of the culm, and the sensor (Ss)
, (Ss) both detect clutch engagement and the automatic control start switch (separate) is turned on. 1. A vehicle speed control device for a combine harvester, characterized in that the vehicle speed control is started after a set time and a set distance have been traveled.