JPS631207B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes an operation lever for manually changing the speed of a traveling transmission, and also provides a transmission system based on a detection signal from a load detection device that detects the load on a working part and a vehicle speed detection device. and a vehicle speed control device that outputs a control signal to the travel transmission to increase or decrease the vehicle speed so that the load on the working part is substantially constant, and the travel transmission is controlled by the operation of the operating lever. Regarding a reaping harvester equipped with a control system switching device that can freely switch the operating system between an artificially operated state in which the speed can be manually changed based on the speed change operation, and an automatic control state based on the operation of the vehicle speed control device, It is an object of the present invention to simplify the configuration of parts and to make it easier to operate a driving transmission and a change setting device.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, a device 4 for raising planted grain culms is installed at the front of a self-propelled machine equipped with a crawler traveling device 1, a threshing section 2, a control section 3, etc., and a device 4 for raising and reaping grain culms. A combine harvester as an example of a reaping/harvesting machine is constructed by connecting the device 5 and a pre-processing section having a conveying device 6 for supplying the reaped grain culms to the threshing section 2.

As shown in FIG. 2, the crawler traveling device 1
and engine E, four hydraulic clutches 8a to 8d are respectively attached to four pairs of permanent gears.
A traveling transmission 9 is configured to switch the crawler traveling device 1 to a neutral state and a total of 4 speed drive states, including 3 forward speeds and 1 reverse speed, by selectively engaging or turning off all of them. is interposed inside the traveling transmission case 7.

To construct an operating structure for manually shifting the speed of the transmission 9, as shown in FIG. A volume 11, which is an example of a gear shift position detection means for detecting an operating position, is connected to an operating lever 10 by an interlocking mechanism 11a.
As shown in FIG. A speed change operating device 12 is linked to the control valve V for the clutches 8a to 8d, which is configured to automatically operate the control valve V using a pulse motor or the like.

As shown in FIG. 2, a device 14 for detecting the driving torque of the handling drum 13 as the load on the threshing section 2, a device 15 for detecting the rotational speed of the handling drum as the rotational speed of the engine E, and a working section. As shown in FIG. and a device 17 for setting a control target vehicle speed for setting the rotational speed of the engine E and the driving torque of the threshing section 2 to set values that are appropriately balanced based on information from the engine rotational speed detection device 15, respectively; Vehicle speed setting device 1
The target vehicle speed set by the target vehicle speed setting device 17 and the speed detected by the vehicle speed detecting device 16 are compared to determine whether or not a change in vehicle speed is necessary.
a discrimination circuit 18 that applies an actuation signal to the speed change operation device 12 so that the detected speeds match or almost match;
Based on the information from the detection devices 14, 15, and 16, the traveling transmission 9 is configured to automatically operate so that the loads on the threshing section 2 and the engine E are constant or almost constant. A vehicle speed control device 19 is linked to the clutch 8. an automatic control state in which the speed change operation device 12 is activated based on information from the discrimination circuit 18 and the continuous speed control device 19 is activated;
A control system switching device 20 is linked to the vehicle speed control device 19, which can freely switch between a manual operation state in which the vehicle speed control device 19 is activated based on information from the volume 11 and a manual operation state in which the vehicle speed control device 19 is inactivated.
As shown in FIG. 3, it is constructed so that it can be operated by a manual operating tool 22 attached to a guide 21 of the shift operating lever 10. Also, operating tool 22
By doing this and putting the vehicle speed control device 19 into operation, a load as large as possible is applied to the engine E within its permissible load range, and a load as large as possible is applied to the threshing section 2 within its permissible range. This allows the vehicle to be operated while automatically changing its speed.

As shown in FIG. 4, the speed change operation device 12
In addition, a device 23 for changing and setting the maximum vehicle speed operated by the vehicle speed control device 19 by manipulating the signal applied to the control valve V is attached, and this changing setting device 23 and the volume 11 are connected to each other. The change setting device 23 is linked to operate with the vehicle speed corresponding to the first to third forward speed positions at which the shift operation lever 10 is operated as the maximum vehicle speed. Further, the change setting device 23 includes:
A setting device operating mechanism 24 is provided for switching the change setting device 23 between an operating state and a non-operating state, and when the control system switching device 20 is in the automatic control state, the setting device operating mechanism 24 brings the change setting device 23 into the operating state. The setting device operating mechanism 24 and the control system switching device 20 are linked so that, when the control system switching device 20 is in the manual operating state, the setting device operating mechanism 24 puts the change setting device 23 in the inactive state. I've let it happen. Then, turn the gear shift operation lever 10,
The vehicle speed is adjusted so that when the vehicle speed control device 19 is in an operating state, it is in a state in which it is linked only to the change setting device 23, and when the vehicle speed control device 19 is in an inactive state, it is in a state in which it is in a state in which it is in a state in which it is linked only to the driving transmission 9. When the vehicle speed is automatically changed by configuring the control device 19 to be automatically switched as the control device 19 is switched between the operating state and the non-operating state, the vehicle speed control device 19 is controlled by the shift operation lever 10. The maximum vehicle speed can be changed and set using the .

Incidentally, the indicators 25 to 29 shown in FIG. 3 are for indicating the operating position of the gear shift operating lever 10. Also, among these indicators, the gear shift operation lever 1
Indicating the position of 0's forward 1st speed to 3rd speed 2
Reference numerals 5, 26, and 27 also serve as indicators that indicate the speed change state of the driving transmission 9 that is operated by the vehicle speed control device 19 when the vehicle speed control device 19 is in the operating state. That is, the three display devices 25, 2
6 and 27 are made of a translucent material, and lamps 30, 31, and 32 are provided on the back side of these indicators, and the gear change state of the driving transmission 9 is detected based on the operating state of the control valve V. The lamp 30, 31, or 32 corresponding to the indicator 25, 26, or 27 corresponding to the gear change state of the driving transmission 9 is lit.

In summary, the present invention provides the above-mentioned reaping and harvesting machine with a shift position detection means 11 for detecting the operating position of the operating lever 10, and also provides a shift position detecting means 11 for detecting the operating position of the operating lever 10, and also provides a shift position detecting means 11 for detecting the operating position of the operating lever 10. The present invention is characterized in that a setting device 23 is provided for inputting the detection result by the shift position detection means 11 as the maximum vehicle speed setting value in the vehicle speed control device 19.

That is, in a reaping harvester that is configured to switch between a manual operation state and an automatic control state, there are an operation lever 10 for operating the traveling transmission 9 used during manual operation, and an operation lever 10 for determining the maximum vehicle speed during automatic control. A shift position detection means 11 is provided to detect the operation position of the operation lever 10 so that the same operation lever 10 can be used for both. Since a setting device 23 is provided for inputting the detection result by the shift position detection means 11 as the maximum vehicle speed set value in the vehicle speed control device 19, the operating section can be configured to be simple with a small number of levers. The operation for changing gears and changing and setting the maximum vehicle speed is no longer required, unlike in the past, where a lever for changing gears and a lever for changing setting device were provided separately. I was able to do it easily without having to worry about it.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[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 a side view of the front part of the combine, Fig. 2 is a schematic diagram of the transmission system, Fig. 3 is a perspective view of the lever mounting part, and Fig. 4. is a block diagram. 2... Working part, 9... Traveling transmission, 10...
...operation lever, 11...operation amount detection means, 14,
15...Load detection device, 16...Vehicle speed detection device,
19... Vehicle speed control device, 20... Control system switching device, 23... Setting device.

Claims (1)

[Claims] 1 includes an operating lever 10 for artificially shifting the speed of the traveling transmission 9, and a working section 2
Based on the detection signals from the load detection devices 14, 15 and the vehicle speed detection device 16, a control signal is output to the traveling transmission device 9 so that the load on the working section 2 is substantially constant. An artificially operated state including a vehicle speed control device 19 that increases or decreases the vehicle speed, and in which the traveling transmission 9 can be manually operated to change the speed based on the operation of the operating lever 10; and the vehicle speed control device 19. In a reaping harvester equipped with a control system switching device 20 that can freely switch the operating system between automatic control states based on the operation of The present invention is characterized in that a setting device 23 is provided for inputting the detection result of the shift position detection means 11 as the maximum vehicle speed set value in the vehicle speed control device 19 when the switching device 20 is switched to the automatic control state. Reaping harvester.