JP2788567B2 - Combine handling depth control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a grain culm conveying route for conveying a harvested grain culm to a threshing apparatus. And a handling depth adjusting means for adjusting the handling depth in the threshing device, the handling depth adjusting means being located on the upstream side in the transport direction from the installation location of the pair of ear tip position detecting means in the grain culm transport path. It is provided in a state of performing depth adjustment, and based on information of the pair of head position detecting means, to maintain a state in which only the stock side of the pair of head position detecting means detects presence of a grain culm. The present invention relates to a combine depth control device provided with control means for operating the depth control means.

[0002]

2. Description of the Related Art In the above-mentioned combine depth control device,
Conventionally, when a state in which both of the pair of tip position detecting means detect the presence of a grain stalk continues for a predetermined time (for example, 1 to 2 seconds), a foreign substance such as a floating straw occurs at a detection position of the pair of tip position detecting means. In order to avoid erroneous detection of the tip position detecting means due to the clogging, an alarm device such as a buzzer is activated for a certain period of time (for example, about 5 seconds) to notify a worker of occurrence of clogging of a floating straw or the like. , Inspection and removal of clogs. However, the handling depth control is continued even during the time when the alarm device is operated.

[0003]

Therefore, as described above, when the pair of ear position detecting means detects that there is a grain culm, it is determined that the pan is on the deep handling side. In this case, if the worker forgets to check for a clogging of a float or the like or cannot immediately check even if the alarm is activated, the handling depth adjustment is shallow. It will continue to be operated to the handling side and will continue to be operated to the shallowest state.In this case, even if the worker checks the clogging of the floating straw etc. later and removes it, the normal handling depth state There was a problem that handling errors such as unhandled portions and spilled culms occurred before returning to normal.

The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the above-described problem by performing a process for detecting a presence of a grain stalk by both of a pair of ear position detecting means. An object of the present invention is to minimize the occurrence of poor handling in the handling state, particularly in the shallowest state.

[0005]

According to a first characteristic configuration of a combine depth control device according to the present invention, a condition that the control means detects that there is a grain culm in both of the pair of ear position detection means is predetermined. The point is that the alarm means is activated as time continues, and the operation of the handling depth adjusting means to the shallower side is prohibited.

A second characteristic configuration is that the control means includes:
After the alarm means is operated for a predetermined time, when both of the pair of tip position detecting means have detected the presence of a grain culm, the handling depth adjusting means is configured to operate to the shallow handling side. It is in the point.

[0007]

According to the first feature of the present invention, when the state in which the pair of ear position detecting means both detect the presence of a grain stalk continues for a predetermined time (for example, 1 to 2 seconds), the detection of the ear position detecting means is performed. The alarm device activates the alarm device and informs the worker that there is a possibility that a foreign matter such as a floating straw is clogged at the location, and instructs the operator to check for and remove the foreign matter clogging. However, during the time that the alarm device is operating, the operation of the handling depth control to the shallow handling side is prohibited.

Further, according to the second characteristic configuration, the alarm device is activated for a predetermined time (for example, about 5 seconds) when there is a possibility that foreign matter is clogged at the detection position of the pair of ear position detection means. The operator is informed by doing so, even after the lapse of the predetermined time, if both of the pair of ear position detecting means have detected the presence of a grain culm, it is operated to the shallow handling side as normal handling depth control. Will be.

[0009]

Therefore, according to the first characteristic configuration of the present invention, after the worker checks the foreign matter clogging based on the foreign matter clogging alarm and removes the clogging, for example, the operator cancels the alarm and cancels the alarm. If it is made possible by a manual operation, the alarm operation can be stopped after the inspection and removal of the foreign matter clogging is surely performed, so that the processing when the pair of head position detecting means both detect the presence of the grain stalk is performed. In addition, it is possible to obtain a combine handling depth control device with excellent operation reliability by minimizing the occurrence of poor handling in the shallow handling state, particularly in the shallowest state.

According to the second characteristic configuration, if inspection and removal of foreign matter clogging is performed during the above-mentioned alarm activation time, there is no need for the operator to perform the alarm cancellation operation at the same time as the shallow handling state. In addition, it is possible to obtain a combine depth control device which is excellent in operation reliability and more easily usable.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 5, the combine is configured such that a cutting unit 4 is mounted on a front part of an airframe including a pair of right and left crawler traveling devices 1, a threshing device 2, and a driver's seat 3 so as to be vertically swingable. I have.

The cutting unit 4 includes a raising device 5 for raising the planted grain culm, a cutting blade device 6 for cutting the root of the raised grain culm, and collecting the harvested culm culm and transporting it to the rear. The auxiliary transporting device 9 includes a vertical transporting device 8 that transfers the harvested grain culm to the threshing feed chain 7 of the threshing device 2 while gradually turning over the transported harvested culm. In a normal cutting operation, the cutting unit 4 is controlled to move up and down so as to maintain a constant height with respect to the ground.

The vertical conveying device 8 comprises a clamping vertical conveying device 8A for clamping and transporting the root side of the harvested grain culm, and a tip locking vertical transporting device 8B for latching and transporting the tip side of the harvested grain culm. The harvested grain culm from the auxiliary transport device 9 is transported rearward in a vertical attitude to the machine body, and is changed to a sideways attitude at a transport end portion to be delivered to the threshing feed chain 7.

The vertical transport device 8 is pivotally mounted at the end portion so as to be vertically swingable around a horizontal axis P. When it is vertically swung, the support position of the harvested grain culm supplied from the auxiliary transport device 9 is changed in the culm direction, and the position of the harvested grain culm transferred from the vertical transport device 8 to the threshing feed chain 7. Is changed to the culm direction, and the threshing device 2
Will be changed and adjusted.

The swing operation structure of the vertical transfer device 8 will be described. As shown in FIG. 5, an arm 18 which is vertically swung by an electric motor 17 is provided, and the arm 18 and the vertical transfer device 8 are connected to each other. However, the vertical conveyance device 8 is vertically linked by interlocking and linking via a relay link 19, so that the electric motor 17 is rotated forward and backward. Therefore, the vertical conveying device 8, the relay link 19, the arm 18, the electric motor 17, and the like constitute the handling depth adjusting means C.

As shown in FIGS. 4 and 5, in the grain culm conveying path for conveying the harvested grain culm to the threshing apparatus 2, the grain culm conveying direction is lower than the handling depth adjusting portion C by the handling depth adjusting means C. On the side, the tip position of the cereal culm is set in a path portion for transporting the cereal culm in a sideways posture by the placement guide plate 21 for receiving and guiding the culm tip side portion toward the cereal culm receiving port 20 of the threshing device 2. A pair of tip sensors S1 and S2 as a pair of tip position detecting means for detecting are provided at intervals in the stem direction of the transported grain stem. Each of the pair of tip sensors S1 and S2 reciprocates to the lower side of the conveyance due to contact with the grain culm and is urged to return to the upper side in the conveyance direction.
And a detection unit 23 using a switch for detecting the backward swing of the sensor lever 22. That is, the sensor lever 22 retreats and swings due to the contact with the cereal stem, and the detecting unit 23
If N operation is performed, the presence of a grain stalk is detected, and if the detection unit 23 is OFF, the absence of a grain stalk is detected. In FIG. 5, S
Reference numeral 0 denotes a stock sensor, which is composed of a sensor lever that reciprocates and swings in the same manner as the tip sensors S1 and S2, and a detection unit using a switch that detects the reciprocation of the sensor lever.

As shown in FIG. 1, a control device H using a microcomputer is provided.
, Signals from the pair of head sensors S1, S2 and the stock sensor S0 are input to the threshing device 2
A signal is input from a threshing switch S3 that is turned ON in accordance with the on / off operation of the threshing clutch lever 16 for performing on / off operation of power transmission to the motor. The control device H
, A drive signal is output to each of the electric motor 17 and the alarm device 24 as alarm means.
The alarm device 24 includes a buzzer provided in the driver's seat 3 and a blinking lamp.

In the control device H, based on the information of the pair of head sensors S1 and S2, only the head sensor S2 on the stock side of the pair of head sensors S1 and S2 detects the presence of a grain culm. Control means 100 for operating the handling depth adjusting means C in order to maintain the control value. In this case, the drive signal is output to the electric motor 17 to vertically swing the vertical transport device 8, but if the vertical transport device 8 swings downward, it is adjusted to the deep handling side, and if the vertical transport device 8 swings upward, the vertical transport device 8 becomes shallow. It will be adjusted to the handling side.

The control means 100 activates the alarm device 24 as the pair of head sensors S1 and S2 detect the presence of a grain stalk for a predetermined time (N seconds). The depth adjusting means C is configured to prohibit the operation to the shallow-handling side, and the control means 1
00 activates the alarm device 24 for a predetermined time (for example, about 5 seconds), and thereafter, the pair of ear sensors S1,
When both S2 detect the presence of a grain culm, the handling depth adjusting means C is operated to the shallow handling side. The N seconds are set to 1-2 seconds.

Next, the control operation of the control device H will be described with reference to the flowcharts of FIGS. First, the handling depth control is performed after confirming that the threshing switch S3 is in the ON state, and then changing the stock sensor S0 from the OFF state to the ON state for a predetermined time (this time is at least the stock sensor S0). From the installation position, the pair of head sensors S1, S2
Until the culm is conveyed), and after the elapse of the predetermined time, it is confirmed that the stock sensor S0 is in the ON state.
The detection state of the presence or absence of a cereal stalk by 1, S2 is examined.

When the tip sensor S2 on the stock side of the pair of tip sensors S1 and S2 is in the OFF state and the tip sensor S1 on the tip side is in the OFF state, the tip sensor is located on the shallow-hand side. Therefore, when the tip sensor S2 at the base of the stock is in the OFF state and the tip sensor S1 at the tip of the stock is in the ON state, foreign matter such as floating straw is clogged. Then, the control operation is immediately stopped, and the alarm device 24 is operated to notify that a floating straw or the like is occurring.

On the other hand, when the tip sensor S2 on the stock side is in the ON state and the tip sensor S1 on the tip side is in the OFF state, the handling depth state is maintained since it is an appropriate handling depth. Further, when the tip sensor S2 on the stock side is ON and the tip sensor S1 on the tip is ON, both the tip sensors S1 and S2 continue to be ON for the N seconds. It is determined whether or not the operation is continued for N seconds. If the operation is not performed for N seconds, it is determined that it is located on the deep handling side, and the operation is performed on the shallow handling side.

In the above, if both of the ear sensors S1 and S2 are kept ON for the above-mentioned N seconds, it is determined that there is a large possibility that a foreign matter such as a floating straw has been clogged, and an alarm has already been issued. After confirming that the device 24 is not operating (the alarm operation flag is not on), the alarm device 24 is operated for 5 seconds to notify that a floating straw or the like is occurring. And the operation time of the alarm device 24 is 5
While prohibiting operation to the shallow side until the elapse of seconds,
After the operation time of the alarm device 24 has elapsed for 5 seconds, the alarm device 24 is operated to the shallow-hand side.

[Alternative Embodiment] In the above embodiment, the pair of ear position detecting means S1 and S2 receive and guide the ear portion of the cereal stem toward the cereal stem receiving port 20 of the threshing apparatus 2 for guiding. Although the detection is performed with the cereal stem in the horizontal posture on 21, the detection may be performed in the vertical posture at the vertical conveyance device 8 on the upper side in the conveyance direction. Further, although the pair of head position detecting means S1 and S2 and the stock sensor S0 are configured by switches that detect contact, a photoelectric sensor that detects non-contact may be used.

In the above embodiment, the handling depth adjusting means C
Is configured so as to adjust the handling depth by swinging the vertical transport device 8 up and down. However, the present invention is not limited to this. For example, the feed chain 7 may be moved in parallel with the threshing device 2.

In the above-described embodiment, when the state in which both the ear tip position detecting means S1 and S2 are both ON continues for N seconds, the alarm means 24 is operated for a predetermined time (5 seconds). This operation time can be changed and set as appropriate. or,
It is also possible to operate the alarm means 24 continuously. In this case, for example, if the alarm can be released by a manual operation by the operator, the inspection and removal of the floating straw and the like by the operator are surely performed. After that, the alarm operation is stopped.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a flowchart of a control operation;

FIG. 3 is a flowchart of a control operation.

FIG. 4 is a front view of a tip position detecting means.

FIG. 5 is a side view of the front of the combine.

[Explanation of symbols]

 2 Threshing device 24 Alarm means 100 Control means C Handling depth adjustment means S1, S2 Ear position detection means

Claims (2)

(57) [Claims] 1. A pair of head position detecting means (S1, S2) for detecting a head position of a cereal culm in a cereal culm conveying path for conveying a harvested cereal culm to a threshing device (2) comprises: Is provided at an interval, and the handling depth adjusting means (C) for adjusting the handling depth in the threshing device (2) includes the pair of ear tip position detecting means (S1, S2) in the grain culm transport path. ) Is provided in a state in which the handling depth is adjusted on the upstream side in the transport direction from the installation location of the pair of ear tip position detecting means (S1, S
Based on the information of 2), the handling depth adjusting means (C) is controlled so that only the stock side of the pair of ear tip position detecting means (S1, S2) detects the presence of grain culm. A combine depth control device provided with a control means (100) to be operated, wherein said control means (100) detects presence of grain culm in which said pair of ear position detection means (S1, S2) are both present. As the condition continues for a predetermined period of time, the warning means (24) is activated, and the operation of the handling depth adjusting means (C) to the shallow side is prohibited. . 2. After the control means (100) activates the alarm means (24) for a predetermined time, both of the pair of head position detection means (S1, S2) detect the presence of grain culm. 2. A combine depth control device according to claim 1, wherein in such a case, the depth control means (C) is operated to the shallow side.