JPS6031444B2 - combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a combine that is configured to automatically control the vehicle speed based on the detection of fluctuations in the threshing load in order to maintain it within a set range, and that is configured to be able to change the vehicle speed using a human operating tool. Regarding.

This type of combine harvester uses automatic vehicle speed control to avoid unstable running due to irregularities in the field and collisions with ridges when it comes close to the edge of the ridge, even during work. Although it is also possible to change the vehicle speed,
Conventionally, the structure has been configured so that the speed can be changed artificially to either the speed increasing side or the decelerating side, which has the disadvantage of unexpectedly increasing the threshing load by changing the speed to the speed increasing side during automatic control. was there.

In order to solve this inconvenience, conventionally, as shown in Japanese Patent Publication No. 49-9172, in a structure that automatically controls the direction of the vehicle based on the threshing load, it has been proposed to There is also a known technology in which the continuously variable transmission can be manually operated only to the vehicle speed deceleration side by operating a shift lever that is interlocked with the manual gear shift lever. When the transmission is manually operated to the deceleration side, the operating mechanism of the automatic control system follows and is automatically operated to the deceleration side.
When manual operation is released, the machine does not automatically return to the original running speed that matches the threshing load, but instead continues to run at a slow speed relative to the threshing load, and then returns to the running speed that matches the threshing load. Therefore, when the grain camphor that was harvested at that slow running speed reaches the threshing device, the threshing load suddenly becomes lighter and the running speed increases rapidly, and then the grain is harvested at that fast running speed. When the milled grain reaches the threshing device, the threshing load increases rapidly, causing a sudden deceleration, resulting in a hunting phenomenon in the control.

The technical problem to be solved by the present invention is that in a combine that automatically controls the running speed based on the threshing load, when configuring the harvester to control the wheel distance at any time even by manual operation,
Unless handled in a particularly careless manner, in normal use, the gear can be manually operated only to the deceleration side, and when the manual operation is released, it returns to the original automatic control state, that is, in accordance with the threshing load. The purpose is to configure the vehicle so that the running speed can be easily obtained.

The technical means of the present invention taken to solve the above problems are as follows:
Based on the detection results of both the threshing load detection mechanism and the vehicle speed detection mechanism, the artificially operated odor for vehicle remote control is forcibly swung around its oscillation axis so that the threshing load is maintained within the set range. In a combine harvester equipped with a judgment circuit that inputs a control signal to a first drive device for operating the operation, the combine harvester is rotatable around a pivot axis for swinging the operation odor, and the operation odor is operated to increase the speed of the operation odor. A rotating member integrally provided with a locking body that supports the direction side is disposed near the operating tool, and a second drive device for forcibly driving this rotating member is provided, and the operation odor is eliminated by human operation. A detection mechanism is provided, and the second driving device and the human operation detection mechanism are linked to the judgment circuit, and further, the judgment circuit detects the first and second driving devices when the human operation detection mechanism does not detect any human operation. A control signal is issued to drive both second drive devices in the same direction in synchronization, and when a human operation is detected, control is performed to set the first drive device in a free state and lock the second drive device. This configuration is configured to emit a signal, and this configuration provides the following effects.

In other words, when manual operation is performed during vehicle speed control with the locking body in contact with the speed increasing operation direction of the operating tool,
Artificial vehicle distance changes can only be made to the deceleration side, so you can reliably decelerate without causing inconveniences such as unexpectedly increasing the speed and increasing the threshing load, resulting in unstable running or collisions with ridges. Although it is possible to avoid this, when deceleration is no longer necessary, the artificial speed change operation is
By returning the manual operating tool to the position where it contacts the locking body of the rotating member, the original automatic control state where the threshing load and traveling speed have a proper correlation is immediately restored, and control hunting, etc. This allows you to avoid inconveniences such as inviting others.

In addition, in order to prevent the human operating tool from touching the locking body of the rotating member, if you take your hand off the human operating tool carelessly for some reason,
Automatic vehicle speed control will start at that point, but even if you make such a careless move, if you notice it and immediately start operating again, it will be possible to avoid a major change in the vehicle's distance. It is possible to return the vehicle to a state close to the original automatic control state. Moreover, such careless operations can actually cause the vehicle speed change operation to return from an artificial vehicle speed change operation to an automatic vehicle speed change operation state. This does not occur frequently when operating the vehicle while being aware of this, and in practice, it is possible to check the operation toward the acceleration side due to human operation with almost no problem.

Embodiments of the present invention will be described below based on the drawings.

A hoisting device 1 that pulls up a shield standing grain in the field, a reaping device 2 that reaps the hoisted grain, and a feed chain 3 that changes its posture to an almost horizontal position while conveying the harvested grain to the upper part of the rear of the machine.
a rear conveyance device 4 for delivering the harvested grains to the feed chain 3;
The threshing 8E straw is cut off, and the 8E straw processing unit 6, which releases the threshed straw to the field as long straw without cutting it, is mounted on a running machine base equipped with a crawler running device 7. ,
The combine harvester is configured to continuously harvest and process grain stacks in the field as it travels. The crawler traveling device 7
is configured to be hydraulically driven by a hydraulic pump of a variable discharge capacity type, and the discharge capacity of the hydraulic pump is changed by a speed change operation lever 9 as an artificial operation tool disposed in the control section 8, and the crawler traveling device 7 is operated by a hydraulic pump. It is configured to allow continuously variable speed.

As shown in FIG. 2, the lever 9 has a gear shaft 11 that is interlocked and connected to a first gear 10 that is driven and rotated by an exposure motor M as a first drive device. It is equipped with a lotus that also serves as the pivot axis.

The electric motor M, according to a signal from the judgment circuit C,
The judgment circuit C is configured to rotate in forward and reverse directions.
The rotational torque of the handling ear 12 of the threshing section 5 is detected by a torque detector A, which is an example of a threshing load detection mechanism, and the vehicle speed blocked by the displacement of the lever 9 is detected by a vehicle distance detector, The electric motor M is configured to send a signal to drive the electric motor M by inputs from the torque detection mechanism A and the vehicle speed detection mechanism until the detected vehicle speed corresponds to the vehicle speed set by adding up the detected torque. Based on the detection of fluctuations in the threshing load, the system is configured to automatically remotely control the threshing load to maintain it within a set range.

A gear cylinder 14 as a rotating part is provided on the gear shaft 11 and movably connected to a second gear 13 driven and rotated by an electric motor M as a second drive device.
A locking body 16 is provided on the gear cylinder 14 and supports a locking protrusion 15 protruding from the lever 9 to prevent the lever 9 from being operated to the speed increasing side.
The electric motor M2 is moved and driven by the signal from the judgment circuit C, so that the protrusion 15 and the locking body 16 abut against each other, and the gear cylinder 14 becomes the bar 9.
The limiting mechanism 17 is configured so that the control lever 9 can be operated only to the deceleration side when controlling the speed of the vehicle.

In the figure, reference numerals 18 and 18 refer to friction plates attached to the gear shaft 11, which apply friction to a rotary plate 19 attached to the lever 9. During automobile control, the frictional force of both plates 18, 18, and 19 is used to generate electric power. The lever 9 can be operated by a motor M, and the lever 9 can be operated toward the deceleration side during vehicle speed control against the frictional force between the plates 18, 18, 19.

A human operation detection mechanism A3 including a pressure sensitive switch 20 for detecting human operation is linked to the operation lever 9,
When it is detected that the operation lever 9 has been gripped, a signal is sent from the judgment circuit C based on the input from the human operation detection mechanism A3, and the brake 21 for the electric motor/ground is actuated to fix the second gear 13. , the gear cylinder 14 is configured to be fixed at the position at the start of manual operation.

It should be noted that the device for manually changing the vehicle speed is not limited to the above-mentioned lever 9, and various structures can be used, and these devices are collectively referred to as the manual operating tool 9.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a partially cutaway side view of the main part shown together with the automobile remote control mechanism, and Fig. 3 is a partially cutaway side view of the main part. It is a developed rear view. 9... Human operating tool, 11... Rocking pivot, 4... Rotating member, A. ...Threshing load detection mechanism, A2...Vehicle speed detection mechanism, A3...
...Human operation detection mechanism, C...Judgment circuit,
M. ...First drive device, M2...Second drive device. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 Based on the detection results of both the threshing load detection mechanism A_1 and the vehicle speed detection mechanism A_2, the human operating tool 9 for vehicle speed control is adjusted to its swinging pivot shaft 1 so that the threshing load is maintained within the set range.
The first drive device M for forcibly swinging around 1
In a combine harvester equipped with a judgment circuit C that inputs a control signal to _1, the operating tool 9 is rotatable around the swing pivot shaft 11 and is in contact with the speed increasing operation direction side of the operating tool 9. A rotating member 14 integrally provided with a corresponding locking body 16 is disposed near the operating tool 9, and a second drive device M_2 for forcibly driving the rotating member 14 is provided. A human operation detection mechanism A_3 is provided, and the second drive device M_2 and the human operation detection mechanism A_3 are linked to the judgment circuit C. Further, the judgment circuit C detects the human operation when the human operation detection mechanism A_3 detects the human operation. emitting a control signal to synchronize and drive both the first and second drive devices M_1 and M_2 in the same direction when not in use, and when a human operation is detected, setting the first drive device M_1 in a free state; The combine harvester is further configured to issue a control signal to lock the second drive device M_2.