JPH0728601B2 - 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. Provided freely, a pair of grain culm presence / absence detection sensors 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, and detection information of the grain culm presence / absence detection sensor is provided. The present invention relates to a combine handling depth control device provided with handling depth control means for controlling an actuator for adjusting the handling depth so as to maintain a set handling depth.

[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) for transferring the cut culm to the threshing feed chain (7) of the threshing device (2) is vertically swung to move 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), a pair of upper and lower grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) are connected to the culm of the grain culm. Based on the detection information of the upper and lower sensors (S ₁ ) and (S ₂ ) that are attached in a line in the body direction, the tip side position of the harvested culm is the position range corresponding to the appropriate handling depth. The pair of upper and lower sensors (S ₁ ), (S ₂ )
The vertical conveyance device (8) is vertically swung so that the distance is between the two.

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 are caught by the grain culm detection sensors (S ₁ ) and (S ₂ ) and the inverted U-shaped member (14) to which they are attached, and the grain culm existence detection sensor ( S ₁ ),
(S ₂ ) is in a state to detect floating straws, and the sensor (S ₁ ),
(S ₂ ) may malfunction.

Therefore, conventionally, the sensor on the tip side (S ₁ ) detects the presence of grain culm, and the sensor on the plant side (S ₂ ) detects the absence of grain culm and the operation of the handling depth control is performed. It was configured to stop and issue an alarm.

[Problems to be Solved by the Invention]

In the above-mentioned handling depth control, if both the tip side sensor and the stock side sensor remain ON due to floating straws, etc., the vertical conveyor will be swung to the shallow handling side. . As a result, there was a risk of unhandled material and ear spillage.

In the above-mentioned conventional technique, such a state is not judged to be abnormal and no alarm is output, so there is a possibility that the above-mentioned abnormal state cannot be found.

Further, at the time of starting the work, the vertical conveyance device may start the handling depth control from the state where the deep handling is located near the deep handling position. When both sensors detect grain culm, or when the machine starts turning to the next stroke after turning the aircraft on the headland after the completion of the one-step harvesting operation, the floating straw during the previous harvesting operation is conveyed and erroneously detected. There was a risk that

The present invention has been made in view of the above-mentioned circumstances, and that a state in which a pair of sensors for detecting the presence or absence of grain culm for performing the depth control is unduly continuing is a normal operation. It is an object of the present invention to provide a combine depth control device capable of issuing an alarm by discriminating between time and start of work.

[Means for Solving the Problems]

In order to achieve the above object, the combine depth control device for a combine according to the present invention has a vertical transfer device for transferring a harvested culm to a threshing device. A pair of grain culm presence / absence detection sensors for swinging adjustment are provided side by side in the conveyor route of the vertical transport device in the grain culm direction, and the grain culm presence / absence detection sensor is provided. In the combined depth control device of the combine, which is provided with a depth control means for controlling the actuator for adjusting the depth so as to maintain the preset depth based on the detection information of Both the detection sensor is provided with alarm means for alarming as the state of detecting the presence of grain culms continues for a set time or longer, and the alarm means is, after starting the control operation of the handling depth control means, Until the proper handling depth is detected, Wherein structure that than later is arranged to increase the setting time.

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

[Action]

That is, in the present invention, at the time of normal work, since the alarm is issued when the state of both grain culm presence / absence detection sensors continuously detects the grain culm for a set time or longer, an erroneous operation of the handling depth control due to occurrence of floating straw or the like occurs. You will be able to discover it.

Further, since the stroke of the control operation of the handling depth may become long at the beginning of cutting the grain culm, the alarm generation setting time at the start of cutting can be extended to prevent the malfunction of the alarm.

〔The invention's effect〕

Therefore, it is possible to detect a malfunction of the handling depth control due to the occurrence of floating straws, etc., and it is possible to prevent the state of leaving unhandled or spilling from continuing, and at the start of cutting and after the set time has elapsed from the start of cutting. By optimally setting the alarm generation set time, it is possible to detect unhandled parts and the like at an early stage and prevent alarm malfunctions.

〔Example〕

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

As shown in FIG. 4 and FIG. 5, a mowing unit (4) is provided at the front of the machine body including a pair of left and right crawler traveling devices (1), a threshing device (2), and a control unit (3). Therefore, the combine as a harvester is constructed.

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 transfer 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 and coupling via the electric motor (10) and operating the electric motor (10) in the forward and reverse directions.

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 ), (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 ) state, 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 ), (S ₂ ), the sensor on the stock side ( It is configured so that the state in which only S ₂ ) detects the presence of grain culm is considered to be within the appropriate treatment depth range.

Furthermore, as shown in FIG. 4 and FIG. 5, the unhandled detection sensor (S ₃ ) is provided at a position where the cut culm is transferred from the vertical transport device (8) to the threshing feed chain (7) of the threshing device (2). ) Is attached.

Then, as shown in FIG. 1, based on the detection information of the pair of grain culm presence / absence detection sensors (S ₁ ), (S ₂ ) and the unhandled detection sensor (S ₃ ), the electric motor (10) Driving circuit (18)
A control device (H) using a microcomputer for outputting a drive command is provided.

That is, each sensor (S
₁ ), (S ₂ ), (S ₃ ), the handling depth control means (100) that adjusts the handling depth based on the detection information, and the alarm means that detects the occurrence of floating straws and the unhandled state and outputs an alarm ( Each of 101) will be constructed.

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).

That is, the handling depth control is performed by the switch (2
2) is turned on, the threshing clutch lever (21) is turned on, and when 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, after the above control is started, the tip sensor (S
_{If 1} ) is OFF and the stock sensor (S ₂ ) is ON, it is determined whether or not there is a condition, and if not, the set time (T ₁ ) to be described later is set to be long and if it is set, it is set to be short. There is.

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

If the sensor (S ₂ ) on the stock source side is in the ON state, the unhandled detection sensor (S ₃ ) will be checked.

If the unhandled portion detection sensor (S ₃ ) is in the ON state, the tip side sensor (S ₁ ) is determined.

When the tip side sensor (S ₁ ) is in the ON state, it is determined that the harvested grain culm is conveyed at a deeper handling side than the appropriate handling depth range, and the electric motor (10) is turned on. It is driven to swing the vertical transfer device (8) to the shallow handling side, that is, the upper side.

However, if this state continues for a set time (T ₁ ) or longer, an alarm is activated.

In other words, the set time (T ₁ ) is the sensor for detecting the presence or absence of grain culm (S ₁ ),
It is set to issue an alarm when both (S ₂ ) are ON for a certain time or more continuously.

Sensor (S ₃ ) for unhandled detection when the sensor (S ₂ ) on the stock side is ON
If is off for a set time (T ₂ ), it is determined that floating straws or the like are generated, the control operation is stopped, and an alarm is output.

The sensor on the tip side (S ₁ ) is ON while the sensor on the plant side (S ₂ ) is ON.
In the case of the F state, it is determined that the handling depth is within the appropriate range, the control operation of the handling depth control is stopped, and the current handling depth is maintained.

Also, when both sensors (S ₁ ) and (S ₂ ) are in the OFF state, it is determined that the grain culm is located on the shallower side than the appropriate handling 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.

Also, when the sensor (S ₂ ) on the stock side is OFF, the sensor on the tip side is
When (S ₁ ) is in the ON state, it is determined that there is a risk of erroneous detection due to floating straws, the control operation is stopped, and an alarm is output to notify that floating straws are occurring.

[Another embodiment]

In the above-mentioned embodiment, the case where the sensors (S ₁ ) and (S ₂ ) for detecting the presence of grain culm are contact type sensors is exemplified, but they may be non-contact type sensors such as photoelectric sensors.

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 THE DRAWINGS The drawings show an embodiment of combine depth control of the combine according to the present invention. Fig. 1 is a block diagram of the control configuration, Fig. 2 is a flow chart of control operation, and Fig. 3 is a grain culm. The front view of the attachment part of the presence detection sensor, FIG. 4 is the front side view of the combine,
FIG. 5 is a plan view of the same. (2) ... threshing device, (8) ... vertical conveying device, (10) ...
Actuator for adjusting the handling depth, (S ₁ ), (S ₂ ) ... Sensor for detecting the presence or absence of grain culm, (T ₁ ) ... Setting time, (100) ... Handling depth control means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiaki Doi 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd. Sakai Works (56) References: 58-94334 (JP, U)

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) to determine whether or not the grain culm is present. A handling depth control means (100) is provided to control the handling depth adjusting actuator (10) so as to maintain the set handling depth based on the detection information of the detection sensors (S ₁ ) and (S ₂ ). In the combined depth control device of the combine, the pair of grain culm presence / absence detection sensors (S ₁ ) and (S ₂ ) both detect the presence of grain culm for a set time (T ₁ ) or more. An alarm means (101) for alarming with continuation is provided, and the alarm means (101) is provided with an appropriate handling depth after the control operation of the handling depth control means (100) is started. Until detected the set time (T ₁₎ adapted to be longer and threshing depth control device combines are than subsequently thereto.