JPH04158717A - Combine - Google Patents

Abstract

PURPOSE:To improve the reaped state near a levee by housing a grass-dividing tool when a reaping operation is indicated by an indication means and changing the tool to an active state when the reaping operation is not indicated. CONSTITUTION:The objective combine is provided with a change-over means M1 to protrude a grass-dividing tool 9 of the rearing part in front of the machine body or to house the tool at the back of the machine body. When the combine reaches a levee, the reaping operation is indicated with an indication switch S5 to change the grass-dividing tool to housed state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a reaping section that can be freely operated up and down to reap grain culms, a conveyance device that conveys the cut grain culms, and a threshing system for threshing the conveyed husks. a threshing device, a processing depth adjusting means for adjusting the processing depth of the threshing device, an instructing means for instructing a cutting operation, and an instruction means for instructing the cutting operation to adjust the processing depth. The present invention relates to a combine harvester provided with a control means for operating an adjustment means toward a deep handling side.

[Conventional technology]

When reaping a field without moving toward the ridges in a field with ridges around it, it is necessary to perform the cutting operation a little before the end of one reaper step. In other words, in order to prevent the front end of the reaping section from colliding with the ridge, the reaping section is raised, and the handling depth adjustment means is operated to the deep handling side to avoid shallow handling due to the raising of the reaping section. be.

By the way, heretofore, the weeding tool, which is the front end of the reaping section, has always been fixed in an active position protruding toward the front of the machine body.

[Invention or problem to be solved]

In the above conventional technology, the amount of protrusion of the weeding tool toward the front of the machine is large, so it is necessary to start the mowing operation early when approaching the ridge to prevent the weeding tool from colliding with the ridge. There is.

Therefore, the reaping length of the husk near the ridge becomes extremely short, which may impede the threshing operation. In addition, the amount of uncut material near the ridges becomes large, and it takes time and effort to cut it by hand.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks and obtain a combine harvester with high workability.

[Means for Solving the Problem] In order to achieve this object, the characteristic structure of the combine harvester according to the present invention is such that the weeding tool provided in the reaping section is protruded toward the front side of the machine body, and the weeding tool provided at the cutting section is protruded toward the rear side of the machine body. Position switching means is provided for switching between a retracted position and a retracted position, and the control means causes the weeding tool to assume the retracted position when the instruction means is instructing a mowing operation, and the control means is configured to cause the weeding tool to be in the retracted position when the instruction means is instructing a mowing operation. When the weeding tool is not in use, the posture switching means is configured to operate so that the weeding tool is in the working posture.

[For production]

If you instruct the mowing operation when approaching a ridge in one work process, the weeding tool will switch from its working position to its retracted position, making it possible to reduce the amount of protrusion of the weeding tool toward the front of the machine. . Therefore, the start of the mowing operation can be relatively delayed.

〔Effect of the invention〕

Therefore, it is possible to prevent the reaping length of grain culms near the ridges from becoming extremely short, thereby avoiding any hindrance to the threshing operation.

In addition, the amount of uncut material near the ridges is reduced, reducing the effort required to manually cut the remaining material.

As a result, the workability of the combine harvester can be improved.

〔Example〕

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

As shown in Figure 4, a pair of left and right crawler traveling devices (+
), a threshing device (2), and a control section (3).
A combine harvester is constructed by attaching a reaping part (B) to the front part of A) so as to be able to swing up and down.

The reaping part (B) is a weeding tool (9) for weeding the planted shell culms.
, a pulling device (4) that causes the culm to be separated, a cutting blade device (5) that cuts the base of the culm that has been pulled out, and an auxiliary conveyor that collects the cut culm and transports it to the rear. It is equipped with a device (6), a conveyor device (8), etc., which gradually overturns the conveyed cut husk culm and then passes it to the feed chain (7) of the threshing device (2).

The weeding tool (9) is provided so as to be switchable between an active position in which it projects toward the front side of the machine body and a retracted position in which it projects toward the rear side of the machine body.

To explain further, as shown in Fig. 1, a long hole (a
) is formed, and the holder (9a) of the weeding tool (9) is engaged to be slidable in the longitudinal direction of the elongated hole (a). In addition, a weeding tool (9) and an electric motor (M
1) are interlocked and connected via a release wire (21). Further, a spring (22) is provided for biasing the weeding tool (9) back to its working position. In other words, by driving the electric motor (M), the weeding tool (9) can be switched between the operating position and the retracted position.

Note that (S3) and (S,) in FIG. 1 are limit switches that are turned ON when the weeding tool (9) is in the operating position or the retracted position, respectively.

As shown in FIG. 1, the conveying device (8) includes a clamping conveying device (8A) that clamps and conveys the stock side of the cut culm, and a tip-locking conveyor that locks and conveys the tip side of the cut culm. Device (8B)
Then, the ear guide plate (8C) is arranged to convey the cut husk from the auxiliary conveyance device (6) in a vertical position towards the rear of the machine, and at the end of the conveyance, it is changed to a sideways position and the threshing foot chain is moved. (7) Uke functions like passing.

Further, the vertical conveyance device (8) is pivotally mounted at the terminal end so as to be vertically swingable around the horizontal axis (P). Then, when it is swung up and down, the supporting position of the cut husk culm fed from the auxiliary conveyance device (6) is changed to the direction of the culm, and furthermore, the support position of the cut husk culm supplied from the auxiliary conveyance device (8) is changed to the direction of the culm, and furthermore, the support position of the reaped husk culm fed from the auxiliary conveyance device (8) is changed to the direction of the culm. The position of the harvested husk culm to be passed is changed in the direction of the culm, and the handling depth in the threshing device (2) is changed and adjusted.

To explain the swinging operation structure of the vertical conveyance device (8), as shown in FIG. A rack (11) is attached to the adjustment lever (10), and the rack (11)
) is attached to the electric motor (M2). In addition, an inverted U-shaped member (13) that also serves as the frame of the vertical conveyance device (8) and an arm (14) are interlocked and connected via a push-pull rod (15).
The vertical conveyance device (8) is configured to swing up and down by operating the electric motor (M2) in forward and reverse directions. In other words, the vertical transport device (8), the arm (14), the rack (1
1), the pinion (12), the electric motor (M2), etc. constitute the handling depth adjusting means (C).

As shown in FIG. 2, the inverted U-shaped member (13) is provided with a pair of upper and lower tip sensors (S1) for detecting the tip position;
1) is attached so that it comes into contact with the culm being transported by the vertical transport device (8). Spike tip sensor (S
, ), and (S1) each include a sensor lever (16) that swings backward toward the lower side of conveyance due to contact with the grain culm, and a detection section using a switch to detect the backward swing of the sensor lever (16) ( 17) The tip sensor (S1) on the top side of the harvested culm and the bottom tip sensor (S1)
), and the presence of the grain culm is detected by the lower ear tip sensor (S1), which is considered to be within the appropriate handling depth range.

Next, a control configuration for operating the handling depth adjusting means (C) and switching the posture of the weeding tool (9) will be described.

As shown in FIG. 1, a control device (H) using a microcomputer is provided, and an instruction switch (S,
), the limit switch (S3), (S,), the ear tip sensor (S1), (S1), a stock sensor that detects whether or not grain culm is being supplied to the conveyance start end of the vertical conveyance device (8). (S,), starting command switch for handling depth control (S6
) and threshing switch (S7) are connected to each other.

If the instruction switch (S,) is not turned on, the position on the tip side of the reaped culm or the top tip sensor (
The handling depth adjusting means (C) is operated so as to be located between the lower tip sensor (S1) and the weeding tool (S1).
9) Switch to the working position.

On the other hand, when the instruction switch (S,) is turned on and the mowing operation is instructed, the handling depth adjustment means (C) is operated to the deep handling side for a set time and the weeding tool (9) is retracted. It is designed to change the posture.

In other words, the control means (100) uses the control device (H).
is configured.

Next, the control device (H
) control operation will be explained. However, this control operation is several m5e
It will be repeated once every c.

First, to adjust the handling depth, adjust the start command switch (S6) and the threshing switch (S7), and if both are ON, the output of the stock sensor (S) indicates that there is no culm. Detect whether or not the

If the stock sensor (So) is in the ON state, it is determined that reaping work is in progress, and it is detected whether the instruction switch (S5) is turned on.

If the instruction switch (S,) is OFF, the handling depth is controlled so that the tip of the reaped culm is positioned between the upper tip sensor (S1) and the lower tip sensor (S1) as described above. At the same time, the weeding tool (9) is switched to the working position.

On the other hand, if the instruction switch (S5) is ON, the reaping part (B) is raised for a set time and the handling depth adjustment means (C
) to the deep handling side. Also, the weeding tool (9) is switched to the retracted position.

If the stock sensor (So) is in the OFF state, the weeding tool (9
) is switched to the operating position, and it is also checked whether the operation to the deep handling side has been performed or not, and if so, the handling depth adjustment is stopped after being adjusted to the shallow handling side by a set amount. However, if the operation to the shallow handling side is not performed, it will return as is.

[Another example]

In the above embodiment, the cutting depth is automatically adjusted based on the detection information of the tip sensors (S1) and (S2) when the mowing operation is not instructed. It can also be applied when automatic adjustment of the height is not performed.

Further, the specific configuration of each part can be changed in various ways, such as by changing the handling depth adjusting means (C) to move the feed chain (7) in parallel in a direction away from the threshing device (8).

Further, in the above embodiments, the reaping section (B) is automatically raised, or the reaping section (B) may be raised manually.

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

[Brief explanation of the drawing]

The drawings show an embodiment of the combine harvester according to the present invention, FIG. 1 is a side view of the main parts and a control configuration, FIG. 2 is a front view of the attachment part of the tip sensor, and FIG. 3 is a flowchart of the opening operation. FIG. 4 is a side view of the front part of the combine. (2)... Threshing device, (8)... Conveying device, (9)... Weeding tool, (100)...
... Control means, (B) ... Reaping section, (C) ...
... handling depth adjustment means, (M1) ... attitude switching means, (S5) ... instruction means.

Claims (1)

[Claims] It is equipped with a reaping section (B) that can be freely operated up and down to reap grain culms, a conveyance device (8) that conveys the harvested grain culms, and a threshing device (2) that threshes the conveyed grain culms. A handling depth adjustment means (
C), an instruction means (S_5) for instructing the cutting operation, and a control means (S_5) for operating the handling depth adjusting means (C) toward the deep cutting side when the instruction means (S_5) instructs the cutting operation. 100), in which the weeding tool (9) provided in the reaping section (B) is switched between an operating posture in which it projects toward the front side of the machine body and a storage posture in which it is retired toward the rear side of the machine body. posture switching means (M_1) is provided, and the control means (100) causes the weeding tool (9) to be in the retracted posture when the instruction means (S_5) instructs the mowing operation; The combine harvester is configured to operate the posture switching means (M_1) so that the weeding tool (9) is in the working posture when no operation is instructed.