JPH0584014A - Reaping transmission controller of combine - Google Patents

Abstract

PURPOSE:To precisely control the reaping transmission of a combine by enabling to switch the reaping transmission rotation of a reaping device on the basis of the speed of the vehicle into a standard mode or into a lodging mode and inhibiting to switch into the lodging mode in the region of high speed travel. CONSTITUTION:The reaping transmission rotation of a reaping device 5 on the basis of the traveling speed of the vehicle is switched with a mode-changing switch 33 into a standard mode A for non-lodged stems or into a lodging mode B for lodged stems. In the high speed region of the traveling transmission, the switching of the reaping transmission rotation into the lodging mode B is inhibited by a mode-switching inhibitor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvesting transmission control device.

[0002]

2. Description of the Related Art For a vehicle speed of a combine, the transmission rotation of a mowing device differs depending on the lodging state of the grain culm, and when cutting a non-yielding grain culm, it depends on the vehicle speed. It is common to use a standard mode in which gear shifting is performed so as to increase the reaping transmission rotational speed. On the other hand, when mowing fallen grain culms, it is necessary to temporarily raise the stalks that have been laid down by a grain culm erecting device to a certain posture. It is better to set it as a mode.

However, when the relation between the vehicle speed and the cutting transmission rotation is switched between the standard mode and the lodging mode to perform a combine operation, the harvesting of the lodging grain culm is performed in any of these modes at a low vehicle speed range. Although it may be possible to switch, when performing cutting of non-fallen grain culms in a high speed range, if this is switched to the lodging mode, the cutting transmission rotation speed becomes too high and a problem is likely to occur. Also, erroneous operations are likely to occur.

[0004]

According to the present invention, the cutting transmission rotation D with respect to the vehicle speed V is provided so as to be switchable between a standard mode A suitable for cutting a non-falling culm and a falling mode B suitable for cutting a laid culm. In the high speed shift range of the power transmission, the combine harvesting power transmission control device is configured so as not to switch to the fallen mode B.

[0005]

[Operation and Effect of the Invention] During the combine operation, the vehicle speed V
The relation of the cutting transmission rotation D with respect to is switched to the standard mode A in the non-clining culm and to the lodging mode B in the clinching culm.
When the vehicle speed V is in the low speed range, this mowing transmission rotation can be selectively switched in either of the standard mode A and the fallen mode B, but when the vehicle speed V is in the high speed range, it is switched to the standard mode A. You can, but you can't switch to lodging mode B because it is restrained.

Therefore, during the work, when the vehicle speed V is in the high speed range, the switching operation to the fallen mode B is not accidentally performed, and the proper cutting transmission can be maintained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
A threshing device 3, on a vehicle body 2 having a pair of left and right crawlers 1,
A cabin 4 for mounting the engine E and covering the control device is provided, and a harvesting device 5 that can be controlled up and down is supported on the front side of the threshing device 3. 6 is a grain extracting auger whose direction can be controlled, and can remove the paddy stored in the Glen tank.

The crawler 1 has a drive sprocket 7 at the front end, a traveling transmission 10 having a hydraulic continuously variable transmission HST which is a main transmission, an auxiliary transmission, a steering clutch and the like.
Drive through and drive. The HST lever 8 can shift the hydraulic continuously variable transmission HST from the neutral position N to the forward high speed side F and the reverse high speed side R. Reference numeral 9 denotes an auxiliary transmission lever that switches the auxiliary transmission device to high speed H and low speed L. The HST lever 8 and the auxiliary shift lever 9 are provided in the cabin 4
Provide inside.

The reaping device 5 collects and feeds the grain culm raising device 11 for raising the lodging grain culm in a certain posture in the front part, the scraping device for scraping the raised grain culm to the rear side, the cutting blade device 12, and the cut grain culm. Has a grain culm transfer device and the like that can be taken over by the feed chain 13 of the threshing device 3 in the upper rear part, and passes through a transmission device in the cutting frame 14 that supports the front part of the vehicle body 2 so as to be rotatable up and down, and then the reaping input shaft. 15
Is configured to interlock with each of these reaping parts.

The threshing device 3 threshes the culms transferred by the feed chain 13 by the rotation of the handling cylinder 16, receives the threshing and swings and transfers the culms to select the paddy while swinging and sorting.
7. Sorting sardine 18 and paddy transfer augers 19 and 20 are arranged below. Of these threshing devices 3, the feed chain 13 and the culm device 21 interlocked with this end.
Etc. are interlocked with each part of the reaping device 5 on the same transmission path.

Transmission from the engine E is performed by the engine shaft 22.
From the hydraulic continuously variable transmission HST and the threshing shaft 23. From the threshing shaft 23, the handling barrel 16, the sardine lees 18, the swing selection shelf 17, the paddy augers 19, 20, and the like are interlocked, and the input shaft 25 of the synchro continuously variable transmission 24 is interlocked. The synchro continuously variable transmission 24 has a ring-cone shape and can be shifted by a shift control motor M, but an output shaft 26 that is shifted is interlocked with a reaping shaft 27 that transmits the reaping input shaft 15, the feed chain 13, and the like. It is a composition. The shift control motor M includes a speed increasing relay 34 that outputs a speed increasing gear and a speed reducing relay 35 that outputs a speed reducing gear.
The rotation is controlled by and. The hydraulic continuously variable transmission HST
Is operated in conjunction with the HST lever 8, but at the same time, the shift control motor M can be operated. When the HST lever 8 is in the low speed region FL in the forward F direction, the synchronous continuously variable transmission 24 can be switched to either the standard mode A or the fall mode B. HST lever 8
However, when the operation is performed in the high speed range FH beyond the low speed range FL, the position sensor 28 for detecting the angle of the HST lever 8 restrains the switching to the fall mode B.

This mode switching control and operation is performed on the input side of the controller CPU having a microcomputer.
A vehicle speed sensor 29 for detecting the vehicle speed, the position sensor 28, an engine rotation sensor 30 for detecting the number of revolutions of the engine E, a mowing rotation sensor 31 for detecting the rotation of the mowing device 5, the feed chain 13, etc., and a synchronous continuously variable transmission 24.
Sensor 3 for detecting the gear shift position of the vehicle with a position sensor
2, and a mode changeover switch 33 and the like are provided.
Further, on the output side, the speed increasing relay 34 of the continuously variable transmission 24,
A deceleration relay 35 is provided to output speed up or speed down.
Reference numeral 36 denotes a mode switching restraint device for restraining the mode switching, which cuts off the input from the mode changeover switch 33 and does not switch to the lodging mode B, and maintains the standard mode A (FIG. 2). This mode switching checker 36 performs check production by detecting a high speed shift range of the HST lever 8 which is equal to or higher than a certain value, by the position sensor 28.

The synchro speed change, which is the relationship of the cutting transmission rotational speed D to the vehicle speed V, is set in advance by the controller CPU in a standard mode A suitable for cutting the above-mentioned uncropped grain culm and a lodging mode B suitable for harvesting the lodging culm. It is registered and set, and by designating these modes A and B, the transmission rotation of the reaper 5 and the feed chain 13 according to the lines A and B is controlled.

In FIG. 6 and FIG. 7, the operation guide groove 43 of the HST lever 8 is branched into left and right falling mode grooves 41 and standard mode grooves 42 on the forward side F to form two lines, and the front end portion is formed. Reference numeral 37 is made to communicate with each other so that it can be operated in an annular shape. The reverse side R has a single operation groove form.
A lodging mode switch 38 for controlling the lodging mode B is provided on one side of the lodging mode groove 41, and a standard mode groove 42 is provided.
On one side, a standard mode switch 39 for controlling the standard mode A is provided, and these switches 38, 39 can be turned on by pressing the switch arm 40 integrally attached to the HST lever 8. HST lever 8
Is guided in the fall mode groove 41, the switch arm 40 turns on the fall mode switch 38, and when it is guided in the standard mode groove 42, the switch arm 4 is turned on.
0 turns on the standard mode switch 39.

8 and 9, the difference from the above example is that
In the mode in which the standard mode A and the lodging mode B are switched by the changeover mode switch 33, an automatic direction control device ACD for automatically performing steering control of the combine according to the direction of the grain or the like, and a cutting device In the case where the automatic cutting height control device ACH or the like for automatically controlling the cutting height is provided, the automatic direction control ACD or the automatic cutting height control ACH or the like is prevented from being performed when the lodging mode B is entered. Is. Reference numeral 44 denotes a switch for turning on / off the automatic direction control provided on the output side of the controller CPU, which is connected to the controller of the automatic direction control device ACD. or,
A switch 45 for turning on and off the automatic cutting height control is connected to the controller of the automatic cutting height control device ACH.

10 and 11, the point different from the above example is that during harvesting control, the harvesting device 5 and By increasing the speed of the threshing feed chain 13 or the like at a constant speed for a fixed time, the carry amount can be thinned and the combine processing capacity can be enhanced. On the contrary, when the vehicle speed increases, the cutting accuracy is reduced and the working capacity can be secured by decreasing the mowing speed at a constant speed for a fixed time.

On the input side of the controller CPU of the reaping transmission control device, a switch 46 for turning the vehicle speed control on and off, and a throttle sensor 47 for detecting the angle of the throttle lever of the engine E with a position sensor are provided. Further, a speed increasing relay 48 and a speed reducing relay 49 of a control motor for controlling the rotation of the throttle lever, a speed increasing relay 50 and a speed reducing relay 51 of a control motor for controlling the rotation of the HST lever 8 are provided.

With this, the cutting control as described above,
The vehicle speed control is performed. In the vehicle speed control, when the vehicle speed control switch 46 is turned on, the throttle lever is actuated by the work load and the like, and the rotational output of the engine E is controlled so that the vehicle speed is maintained constant. When the vehicle speed control by the throttle lever reaches the limit, the HST lever 8 is operated and the vehicle speed is controlled by gear shifting so as to maintain a constant vehicle speed.

12 and 13, a difference from the above example is that the sensitivity switching device 52 is provided so as to make the sensitivity of the vehicle speed control sensitive when the cutting transmission control is in the fall mode B. In the work of harvesting lodging rice, which has a large load fluctuation, it is possible to deal with the load fluctuation by sensitively operating the vehicle speed control deceleration. In the cutting work of non-fallen rice with a relatively small load variation, the work speed and operability can be improved by making the vehicle speed control speed insensitive.

As the sensitivity of the vehicle speed control, various methods such as changing the neutral detection width of the engine speed sensor 30, changing the number of detection calculation processes of the vehicle speed control itself, changing the length of the control output delay timer, etc. There is. In the illustrated example, the controller for controlling the vehicle speed is connected to the controller CPU for controlling the cutting transmission.

[Brief description of drawings]

 The figures show an embodiment of the invention.

FIG. 1 is a block diagram of a reaping transmission control device.

FIG. 2 is a flowchart of a part of control mode switching.

FIG. 3 is a transmission path diagram of the combine.

FIG. 4 is a graph showing the relationship between vehicle speed and cutting speed.

FIG. 5 is a side view of the combine.

FIG. 6 is a plan view of an HST lever operation guide.

FIG. 7 is a control block diagram showing another embodiment.

FIG. 8 is a control block diagram showing another embodiment.

FIG. 9 is a flowchart thereof.

FIG. 10 is a control block diagram showing a partially different embodiment.

FIG. 11 is a flowchart thereof.

FIG. 12 is a control block diagram showing another embodiment.

FIG. 13 is a flowchart thereof.

[Explanation of symbols]

 1 Crawler 3 Threshing device 5 Mowing device 8 HST lever 13 Feed chain 24 Synchronous continuously variable transmission 28 Position sensor 29 Vehicle speed sensor 31 Mowing rotation sensor 33 Mode changeover switch 34 Speed increase relay 35 Deceleration relay 36 Mode change checker V Vehicle speed D Mowing Transmission rotation A standard mode B lodging mode

Claims (1)

[Claims] 1. A cutting transmission rotation D for a vehicle speed V is provided so as to be switchable between a standard mode A suitable for cutting a non-falling culm and a falling mode B suitable for cutting a laid culm, and in a high speed range of travel transmission, A harvesting transmission control device for a combine, which is restrained so as not to switch to the lodging mode B.