JPH0722456B2 - Combine handling depth control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vertical transport device for transporting a harvested culm to a threshing device, in which, for adjusting the handling depth, vertical swinging adjustment is performed with the transport terminal end as a fulcrum. A pair of grain culm presence / absence detection sensors for freely detecting the handling depth are arranged side by side in the culm direction of the grain culm in the transport path of the vertical transport device, and are detected by the grain culm presence / absence detection sensor. A handling depth control means for controlling an actuator for adjusting the handling depth is provided so as to maintain the set handling depth based on the information, and the tip side sensor of the grain culm presence / absence detection sensors is a grain culm. It is configured to detect the presence, and the depth control means stops the operation of the actuator in accordance with the sensor of the root side of the grain culm presence detection sensor detects the absence of grain culm. The present invention relates to a combined handle depth control device.

[Conventional technology]

In the handle depth control device of this type of combine,
For example, as shown in FIG. 4, the vertical transfer device (8) that transfers the cut culm to the threshing feed chain (7) of the threshing device (2) is vertically swung to set the support position of the cut culm to the culm. Change the direction and adjust it to adjust the handling depth. Then, by utilizing the inverted U-shaped member (14) which is also used as the frame of the vertical transfer device (8), the pair of upper and lower grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) detect the grain culm. Based on the detection information of a pair of upper and lower sensors (S ₁ ) and (S ₂ ) that are attached in a line in the culm direction, the tip side position of the harvested grain culm is set as the position range corresponding to the proper handling depth. The vertical transfer device (8) is vertically swung so as to be positioned between the pair of upper and lower sensors (S ₁ ) and (S ₂ ).

By the way, when the fallen grain culm is cut, the cutting device (5) equipped in the mowing section (4) pulls the broken straw together with the grain culm to the tip side of the culm to form a so-called floating straw. It will be transported with the grain culm.

When a large amount of floating straws are generated, the floating straws cause the grain culm detection sensors (S ₁ ) and (S ₂ ) and the reverse U to which they are attached.
There is a possibility that the grain culm detection sensors (S ₁ ) and (S ₂ ) may be caught by the character-shaped member (14) and become in a state where floating straws are detected, and the sensors (S ₁ ) and (S ₂ ) may malfunction.

Therefore the sensor in a conventional (S _1), the one tip side of the sensor (S ₁₎ detects the presence culms, and, the strain base side sensor (S ₂₎ is cereal稈不presence of (S ₂₎ The operation of the depth control was stopped along with the detection. Then, when the detection states of the grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) are changed to states other than the above, the operation of the depth control is released.

[Problems to be Solved by the Invention]

In the above-mentioned conventional technology, when the operation of the handling depth control is stopped, for example, a part of the floating straw that has acted on the tip side sensor of the pair of upper and lower sensors falls down the sensor position on the stock side. Or, only the floating straws are conveyed to the stock side sensor by the vertical conveyor, and the same detection condition as when the stock side sensor of the pair of upper and lower sensors detects the presence of grain culm by the floating straws. If this happens, the handling depth control is activated, and in this case, the shallow handling side malfunctions.

The present invention has been made in view of the above circumstances, in which a pair of upper and lower grain culm presence / absence detection sensors for handling depth control by a floating straw erroneously detects, and the handling depth control by this erroneous detection. An object of the present invention is to provide a combine handling depth control device capable of avoiding a malfunction of the combine.

[Means for Solving the Problems]

The combine handling depth control device according to the present invention, in order to achieve the above object, the handling depth control means, the vertical transfer device for transferring the harvested culm to the threshing device, for adjusting the handling depth. In addition, a pair of grain culm presence / absence detection sensors for detecting the handling depth, which are provided so as to be vertically swingable around the transport end portion as a fulcrum, are arranged in the grain culm direction in the transport route of the vertical transport device. Is provided, and a depth control means for controlling the actuator for adjusting the depth of treatment is provided so as to maintain the preset depth of handling based on the detection information of the sensor for detecting the presence or absence of grain culm The sensor on the tip side of the sensor for detecting the presence of grain culm, and the sensor on the plant side of the sensor for detecting the presence of grain culm detects the absence of grain culm along with the detection of the presence of grain culm. A combiner wherein the means is configured to deactivate the actuator. In the handling depth control device, the handling depth control means is configured to release the operation stop of the actuator only when the tip side sensor detects the absence of grain culm. This is a characteristic configuration.

The operation and effect of this characteristic configuration are as follows.

[Action]

Of the pair of upper and lower grain culm presence / absence detection sensors, unless the sensor on the tip side detects the absence of grain culm, the operation stop of the handling depth control is not released. It is possible to prevent an erroneous operation to the shallow handling side due to the erroneous detection state of the sensor on the stock side.

〔The invention's effect〕

Therefore, it is possible to prevent the floating streak from occurring and the malfunction to the shallow handling side, and it is possible to avoid the occurrence of the unhandled portion.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, a reaper (4) is provided at the front part of the machine equipped with a pair of right and left crawler traveling devices (1), a threshing device (2), and a control unit (3), and thus the reaper The combine as a harvester is configured.

The reaping unit (4) vertically transfers a raising device (5), a cutting blade (6) for cutting the root of the raising culm, and a cutting culm to the threshing feed chain (7) of the threshing device (2). It is provided with a carrier device (8) and an auxiliary carrier device (9) for carrying the harvested culm to the vertical carrier device (8).

As shown in FIG. 3, the vertical transfer device (8) includes a pinching transfer device (8A) for pinching and transferring the root side of the cut grain culm, and a locking transfer for locking and conveying the tip side of the cut grain culm. Consists of a device (8B) and a grain culm guide plate (8C), and conveys the cut grain culm from the auxiliary conveying device (9) in a standing posture toward the rear of the machine body,
At the terminal end of the conveyance, the harvested culms whose posture is changed to the sideways posture are transferred to the threshing feed chain (7).

Further, the end portion of the vertical transfer device (8) is pivotally mounted so as to be vertically swingable around the horizontal axis (P), and is supplied from the auxiliary transfer device (9) along with the vertical swing. The support position of the cut grain culm is changed to the culm direction, and the position of the cut grain culm transferred from the vertical transport device (8) to the threshing feed chain (7) is changed to the culm direction to remove the threshing. It is arranged such that the handling depth in the device (2) is adjusted.

The rocking operation configuration of the vertical transfer device (8) will be described. As shown in FIG. 1, an electric motor (10) as an actuator for adjusting the handling depth is provided, and the vertical transfer device (8) is provided around the horizontal axis (Q). A rack (12) is attached to a swingable arm (11), and a pinion (13) that engages with the rack (12) is attached to the electric motor (10).

In addition, the inverted U-shaped member (14) also serving as a frame of the vertical transfer device (8) and the arm (11) are provided with a push-pull rod (1).
The vertical transfer device (8) is oscillated up and down by interlocking connection via the electric motor (10) and rotating the electric motor (10) forward and backward.

As shown in FIG. 1 and FIG. 3, a pair of upper and lower grains for detecting the handling depth is provided on the inverted U-shaped member (14) located at a position on the lower side in the grain culm transport direction from the handling depth adjusting position. The culm presence / absence detection sensors (S ₁ ) and (S ₂ ) are attached so as to come into contact with the grain culm transported by the vertical transport device (8).

That is, as shown in FIG. 3, each of the pair of grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) includes a sensor bar (16) that swings backward toward the lower side of conveyance due to contact with the grain culm. , And a detection section (17) that uses a switch to detect the backward swing of the sensor bar (16), and the tip side position of the harvested culm is the tip side sensor (S ₁ ) and the stock side sensor (S ₁ ). ₂ ), that is, the tip side of the grain culm is located between the pair of upper and lower grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) to determine whether the pair of grain culm is present or not. Of the detection sensors (S ₁ ) and (S ₂ ), only the sensor (S ₂ ) on the stock side detects the presence of grain culm, and is configured to be considered to be within the proper depth range. ing.

Then, as shown in FIG. 1, a drive command is issued to the drive circuit (18) of the electric motor (10) based on the detection information of the pair of grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ). A control device (H) using a microcomputer for outputting is provided.

That is, the handling depth control means (100) for adjusting the handling depth based on the detection information of the pair of grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) using the control device (H), and Each of the alarm means (101) for detecting the occurrence of floating straws is configured based on the detection information of the sensors (S ₁ ) and (S ₂ ).

In the figure, (20) is a threshing switch for detecting the on / off operation of the threshing clutch lever (21), and (S ₀ ) is whether or not grain culms are supplied to the transport start end of the vertical transport device (8). (22) is an alarm device for outputting the detection information of the alarm means (101).

The alarm device (23) is also used for outputting warnings such as engine overheat in addition to the floating streak warning, and the output time and cycle are changed by each warning.

That is, the handling depth control is performed by the switch (2
When 2) is turned on, the threshing clutch lever (21) is turned on, and the stock origin sensor (S ₀ ) is in the state of detecting the presence of grain culm, the control operation is started. There is.

Next, the operation of the control device (H) will be described based on the flow chart shown in FIG.

First, it is determined whether or not the stock-side sensor (S ₂ ) is in the ON state. Then, it is determined whether or not the sensor (S ₁ ) on the tip side is in the ON state.

When both of the sensors (S ₁ ) and (S ₂ ) are in the ON state, it is determined that the harvested culm is conveyed at a deeper handling side than the proper handling depth range, and The electric motor (10) is driven to swing the transport start end of the vertical transport device (8) to the shallow handling side, that is, the upper side.

Strain base side of the sensor sensor (S ₂₎ is pike side ON state (S ₂₎
When is OFF, it is determined that the handling depth is within the proper range, the control operation of the handling depth control is stopped, and the current handling depth is maintained.

When both sensors (S ₁ ) and (S ₂ ) are in the OFF state, it is judged that the grain culm is on the shallower side than the proper depth range and the electric motor (10) is driven. Then, the vertical transfer device (8) is swung to the deeper side, that is, the lower side.

If the sensor on the stock side (S ₂ ) is OFF and the sensor on the tip side (S ₁ ) is ON, it is judged that there is a risk of false detection due to floating straws, and the control operation is stopped. At the same time, an alarm is output to inform that the floating straw is generated.
This state continues until the tip side sensor (S ₁ ) turns off.

[Another embodiment]

In the above embodiment, the sensors (S ₁ ) and (S ₂ ) for detecting the presence or absence of grain culm
Although the case where the above is configured as a contact type sensor is illustrated, the specific configuration of each unit such as a non-contact type such as a photoelectric type can be variously changed.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a combine handling depth control device according to the present invention. Fig. 1 is a block diagram of a control configuration, Fig. 2 is a flow chart of control operation, and Fig. 3 is an attachment portion of a grain culm presence / absence detection sensor. And FIG. 4 is a front side view of the combine. (2) ... threshing device, (8) ... vertical conveying device, (10) ...
… Actuators for adjusting the handling depth, (S ₁ ), (S ₂ ) ……
Grain culm presence / absence detection sensor, (100) …… Handling depth control means.

Claims (1)

[Claims] 1. A vertical transfer device (8) for transferring a cut culm to a threshing device (2) is provided so as to be vertically swingable with a transfer end as a fulcrum for adjusting the handling depth. Sensors (S ₁ ) and (S ₂ ) for detecting the presence or absence of grain culm for detecting the handling depth are arranged side by side in the culm direction of the grain culm in the transport path of the vertical transport device (8),
Handling depth control means for controlling the handling depth adjusting actuator (10) so as to maintain the set handling depth based on the detection information of the grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ). (Ten
0) is provided and the grain culm presence / absence detection sensors (S ₁ ) and (S
Tip side of the sensor of ₂₎ (S ₁₎ detects the presence culms, and the grain稈存impossibility detection sensor (S _1), a strain base side of the sensor of (S ₂₎ (S ₂ ) Is a combine handling depth control device, wherein the handling depth control means (100) is configured to stop the operation of the actuator (10) when detecting the absence of grain culm. The handling depth control means (100) is configured to release the operation stop of the actuator (10) only when the tip side sensor (S ₁ ) detects the absence of grain culm. Depth control device for combine harvester.