JPH0453408A - Combine harvester handling depth control device - 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] [Industrial Application Field] The present invention is configured to be changed and adjusted in conjunction with the conveyance speed or vehicle speed of a conveyance device that conveys reaped grain rods to a threshing device, a working state detecting means for detecting whether or not the grain rod is being harvested; a rod length detecting means for detecting the rod length of the reaped grain rod; and a rod length detecting means for detecting the rod length of the reaped grain rod; The working depth control is configured to be able to automatically switch the operating state based on information from the working state detection means so that the working state is in a controlled state in which the depth is automatically adjusted, and is in a non-controlled state during non-working. The present invention relates to a handling depth control device for a combine harvester, which is provided with means.

[Conventional technology]

In the above-mentioned handling depth control device for this type of combine harvester,
When the mowing work is finished and the state is in the non-working state, the handling depth control is switched from the controlled state to the non-controlled state, or the switching to the non-controlled state is detected by the working state detection means as the non-working state. Is it necessary to do this after a certain amount of time has passed? That is, for example, when the rod length detection means acts on the grain rods conveyed by the conveying device, even if the handling depth adjustment is performed at the starting end of the conveying device, the When all rod length detection means are installed, the handling depth control is stopped.
It is desirable to avoid malfunctions in the handling depth adjustment based on the detection information of the rod length detection means. In other words, if, for example, the handling depth control is executed even though there is no grain rod, the rod length detection means will detect that the rod length is small, and as a result, the adjustment will be made to the deeper handling side unnecessarily. There are other problems. Further, when the handling depth is adjusted at a transfer point from the terminal end of the conveying device to the threshing device, the handling depth control is stopped when all of the reaped grain rods are transferred to the threshing device. That's good.

Therefore, conventionally, when a set time has elapsed from the time when the working state detecting means detects that the working state has changed from working to non-working, handling depth control or the controlled state can be switched to the non-controlled state. . Incidentally, the set time is determined in accordance with the standard vehicle speed.

[Invention or problem to be solved]

However, since it is configured to be changed and adjusted in conjunction with the conveyance speed of the conveyance device or the vehicle speed, if the point of switching to the non-control state is determined over time as in the past, it will not be possible to switch to the non-controlled state at an appropriate point. There was a risk that it would not be possible to switch to an uncontrolled state.

The present invention has been made in view of the above circumstances, and its purpose is to enable handling depth control to be switched from a controlled state to a non-controlled state at an appropriate time regardless of fluctuations in vehicle speed. There is a particular thing.

[Means to solve the problem]

The handling depth control device for a combine harvester according to the present invention is configured to be changed and adjusted in conjunction with the vehicle speed or the conveying speed of the conveying device that conveys the reaped grain rods to the threshing device, and detects whether or not reaping operation is in progress. a working state detection means, a rod length detection means for detecting the rod length of the reaped grain rod, and a control that automatically adjusts the handling depth of the reaped grain rod in the threshing device based on information from the rod length detection means during the operation. A processing depth control means configured to automatically switch the operating state based on the information of the working state detection means is provided so that the operating state is in the non-controlled state during non-working periods. Its characteristics are as follows.

That is, a traveling distance detecting means for detecting a traveling distance is provided, and the handling depth control means shifts from the working state to the non-working state based on the information of the working state detecting means and the traveling distance detecting means. The point is that the control state is configured to be switched to the non-control state only when the vehicle has traveled a set distance.

[For production]

The transport speed of the transport device that transports the reaped grain rods to the threshing device is changed and adjusted in conjunction with the vehicle speed, so there is a difference between the distance traveled by the grain rods during the transport route and the travel distance. A proportional relationship will be established.

Therefore, for example, when the handling depth is adjusted at the transfer point from the end of the conveyor to the threshing device, after transitioning from working to non-working, all of the grain rods on the conveying route are transferred to the threshing device. By switching from the controlled state to the non-controlled state after traveling the set distance required for the grain to be transported, it is possible to switch from the controlled state to the non-controlled state with the grain remaining in the middle of the transport route regardless of the vehicle speed. You can prevent this from happening. In addition, when a rod length detection means detects the grain rods being transported by the conveying device, after the transition from working to non-working, the last harvested culm or rod length detection means is installed. Unnecessary handling depth adjustment can be avoided by switching from the controlled state to the non-controlled state at the time when the set distance required to be transported to the location has been traveled.

〔Effect of the invention〕

Since it is possible to switch from the controlled state to the non-controlled state at an appropriate time regardless of changes in vehicle speed, it is now possible to perform good handling depth adjustment.

〔Example〕

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

As shown in Figure 5, a pair of left and right crawler traveling devices (1
), a threshing device (2), and a control section (3), and a reaping section (4) is installed at the front of the machine body, thereby forming a combine harvester.

The reaping section (4) includes a triggering device (5) that raises grain rods in the field, a cutting blade (6) that cuts the base of the raised grain rod, and a threshing feed chain ( 7) is provided with a vertical conveying device (8) for transferring the grain, and an auxiliary conveying device (9) for conveying the harvested grain rods to the vertical conveying device (9). In other words, the vertical conveyance device (
8) corresponds to the conveying device that conveys the reaped grain rod to the threshing device (2).

In the figure, (S0) is the conveyance start end of the vertical conveyance device (8) that comes into contact with the bedside of the reaped grain rod.
) is a stock sensor that detects the presence or absence of grain rods being transported. To explain, during the reaping operation, the reaping grain rod continues to be in contact with this stock source sensor (S0), and when the reaping operation is finished, the supply of reaping grain rods is cut off, so the reaping grain rod continues to be in contact with the stock source sensor (S0). This stock sensor (S0) is in a state where it does not come in contact with it. In other words, this stock origin sensor (S0) corresponds to a work state detection means for detecting whether or not reaping work is in progress.

However, each part installed in the reaping part (4) is driven at a speed corresponding to the vehicle speed.

To explain, as shown in Figure 3, the engine (E)
Output or belt tension type threshing clutch (10)
The power is transmitted to the threshing device (2) via the threshing device (2), and is also transmitted to the hydraulic continuously variable transmission device (11) for traveling. The output of the transmission (11) after shifting is transmitted to a transmission section (12) of the crawler traveling device (1) to drive the crawler traveling device (1).

The output after the speed change transmitted to the transmission section (12) is transmitted to the reaping section (4) via a one-way clutch (13) so that the reaping section (4) is driven only when the aircraft moves forward.
4) is also transmitted. In other words, the transmission device (11
) by driving each part of the reaping section (4), the reaping grain rod is moved to the threshing device (2).
The conveyance speed of the vertical conveyance device (8), which serves as a conveyance device, is changed and adjusted in conjunction with the vehicle speed. In FIG. 3, (S3) is a distance sensor serving as a distance detecting means for detecting the distance traveled based on the number of rotations input to the transmission section (12).

To explain the vertical conveyance device (8), as shown in FIG. 1 and FIG. It consists of a locking conveyance device (8B) that locks and conveys, and a grain rod guide plate (8C), and conveys the harvested grain rods from the auxiliary conveyance device (9) toward the rear of the machine in an upright position, and ends the conveyance. The threshing feed chain (
7) Uke is supposed to be handed over.

Then, the terminal end of the vertical conveyance device (8) or the horizontal axis center (P)
This vertical conveying device (8) is pivoted around the periphery so as to be vertically swingable, and as the vertically swinging movement changes the support position of the reaped grain rods supplied from the auxiliary conveying device (9) toward the culm. ) to the threshing feed chain (7), the transfer position is changed toward the culm, and the handling depth in the threshing device (2) is adjusted.

To explain the swing operation structure of the vertical conveyance device (8), as shown in FIG. 1, an electric motor (14) is provided as an actuator for adjusting the handling depth, and
A rack (16) is attached to an arm (15) that can swing freely around the rack, and a binion (17) that engages with the rack (16).
) or attached to the electric motor (14).

In addition, an inverted U is also used as the frame of the vertical conveyance device (8).
The character-shaped member (I8) and the arm (15) are interlocked and connected via a push-pull rod (19), and the electric motor (
14) in the forward and reverse directions, the vertical conveyance device (8) is vertically oscillated.

As shown in FIGS. 1 and 4, the rod length of the reaped grain rod is detected on the inverted U-shaped member (18) located at a location on the lower side in the grain rod conveying direction than the handling depth adjustment location. A pair of upper and lower grain rod presence/absence detection sensors (S0
), (S2) are attached so as to come into contact with the grain rods transported by the vertical transport device (8).

That is, as shown in FIG. 4, each of the pair of grain rod presence/absence detection sensors (S1) and (S2) includes a sensor bar (19) that swings backward toward the lower side of conveyance upon contact with the grain rod; It consists of a detection part (20) using a switch to detect the backward swing of the sensor bar (19), and a long culm detection sensor (Sl
) and the short culm detection sensor (S2) arranged on the plant side, that is, the short culm detection sensor (S2)
) is configured so that the state in which the presence of grain rods is detected is considered to be within the appropriate handling depth range.

Therefore, when the short culm detection sensor (S2) detects the absence of grain stems, it is determined that the grain is being handled lightly, and
The short culm detection sensor (S2) and the long culm detection sensor (Sl)
When both detect the presence of grain rods, it is determined that the grain handling state is deep, and the electric motor (14) is operated to return to the proper handling depth state.

However, this processing depth control for automatically adjusting the processing depth is executed only when the combine harvester is engaged in reaping work, and is stopped during non-work periods after the reaping work is completed. It has become.

In FIG. 1, (21) indicates the pair of grain rod presence/absence detection sensors (St) which serve as rod length detection means during operation.

The working state detecting means is configured to be in a controlled state in which the handling depth of the reaped grain rod in the threshing device (2) is automatically adjusted based on the information in (S2), and to be in a non-controlled state during non-working. This control device uses a microcomputer and constitutes a handling depth control means configured to automatically switch the operating state based on information from the stock sensor (S0). (22) is the threshing clutch (lO)
Threshing clutch lever for manually turning on and off (
23) is a threshing switch that detects the operation state of the threshing clutch lever (22), and (24) is a switch for starting the processing depth control.

That is, in the handling depth control, the switch (24) for starting the handling depth control is turned on, the threshing clutch lever (22) is turned on, and the threshing switch (23) is turned on.
) or ONt, it is determined that the control condition is satisfied, and any other state is determined that the control condition is not satisfied.

Then, when the control condition is satisfied and the stock sensor (S0) is ON, it is determined that the work is in progress, and the pair of grain rod presence/absence detection sensors (S1), (S2
) is in a control state to automatically adjust the handling depth of the reaped grain rod in the threshing device (2), and as the stock sensor (S0) turns OFF, it is determined that the state has shifted to non-working mode. It is designed to switch to a non-controlled state.

However, even if the stock sensor (S0) is turned OFF, all of the grain rods in the middle of being transported by the vertical transport device (8) are transported to the locations where the culm presence/absence detection sensors (S1) and (S2) are installed. The control state is to continue until it is done.

To explain further, as mentioned above, since the vertical conveyance device (8) is configured to change and adjust its conveyance speed according to the vehicle speed, the conveyance amount and travel of the vertical conveyance device (8) are different. A proportional relationship will be established between the distance and the distance. Therefore, from the time when the stock sensor (S0) is turned off, all of the grain rods that are being transported by the vertical transport device (8) are transported to the set location of the culm presence/absence detection sensor (s+), (S2). The distance traveled until the vehicle stops is a constant value regardless of the vehicle speed.

Therefore, as shown in FIG. 2, when the stock sensor (S0) switches from ON to OFF and changes from working to non-working while the control conditions are met, the distance sensor Based on the information in (S3), it is determined whether the vehicle has traveled the set distance or not, and only when the vehicle has traveled the set distance, the controlled state is shifted to the non-controlled state.

However, as described above, the reaping section (4) is driven only when the machine is moving forward through the one-way clutch (13), so the vertical conveyance device (8) is not driven when the machine is moving backward. It will be suspended. Therefore, the distance sensor (S3) measures the travel distance only when the aircraft is moving forward, and is interrupted when the aircraft is moving backward.

It is noted that the handling depth in the non-controlled state is maintained at the state immediately before the transition from the controlled state to the non-controlled state, or the handling depth is shifted to a preset handling depth state, which will not be described in detail.

[Another example]

In the above embodiment, a stock sensor (S0) is used as a work state detection means for detecting whether or not reaping work is in progress, and a pair of grain rod presence/absence detection sensors (S0) are used as a rod length detection means for detecting the rod length of the reaped grain rod. Although S0) and (S2) are configured as contact type sensors, they may be configured in a non-contact type such as a photoelectric type, and the specific configuration can be modified in various ways.

Further, in the above embodiment, the threshing device (2) is used as the rod length detection means.
), the length of the reaped grain rod is detected based on the position of the tip of the grain in the conveyance path of the vertical conveyance device (8) that conveys the reaped grain rod to the raising device (5).
The length of the grain rod caused by this may be detected.

Further, in the above embodiment, the case where the rod length is detected in two stages, long and short, has been exemplified, but the rod length may be detected in multiple stages of three or more stages.

The handling depth can be adjusted by vertically swinging the vertical conveying device (8) centering on the starting end when transferring the husk from the vertical conveying device (8) to the feed chain (7) of the threshing device (2). The specific structure of the handling depth adjustment can be changed in various ways, such as making the handling depth adjustment, and the setting distance for switching from the controlled state to the non-controlled state may be set accordingly.

Further, the traveling distance detecting means (S3) may be determined from the speed change state and the traveling time.

In addition, various changes can be made to the specific configuration of each part necessary for carrying out the present invention.

It should be noted that the present invention is not limited to the structure shown in the accompanying drawings by adding reference numerals in the claims for convenient comparison with the drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the handling depth control device for a combine harvester according to the present invention, FIG. 1 is a block diagram of the control configuration, FIG. 2 is a flowchart of control operation, FIG. 3 is an explanatory diagram of the power transmission system, and FIG. Figure 4 is a front view of the part where the grain rod presence/absence detection sensor is installed;
FIG. 5 is a front side view of the combine. (2)... Threshing device, (8)... Conveying device, (21)... Handling depth control means, (S0)
...Working state detection means, (S1), (S2)
. . . Rod length detection means, (S3) . . . Travel distance detection means.

Claims (1)

[Claims] A conveying device (8) that conveys the harvested grain rod to the threshing device (2).
) is configured such that the conveyance speed of the grain rod is changed and adjusted in conjunction with the vehicle speed, and includes a work state detection means (S_0) for detecting whether or not reaping work is in progress, and a rod length detection means for detecting the rod length of the reaped grain rod. (S_1) and (S_2), during the work, a control state is entered in which the handling depth of the reaped grain rod in the threshing device (2) is automatically adjusted based on the information of the rod length detection means (S_1) and (S_2). and a handling depth control means (21) configured to automatically switch the operating state based on the information of the working state detection means (S_0) so that it is in a non-controlled state during non-working. This is a working depth control device for a combine harvester, in which a traveling distance detecting means (S_3) for detecting a traveling distance is provided, and the handling depth controlling means (21) is connected to the working state detecting means (S_0). ) and the information from the travel distance detection means (S_3), the control state is configured to be switched from the controlled state to the non-controlled state only when the set distance has been traveled after transitioning from working to non-working. Combine harvester handling depth control device.