JPH1056849A - Head-feeding type combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent trouble such as clogging, production of unusual sound, defective grading, etc., due to rejection of a large amount of straw wastes in a threshing chamber and carry out efficient threshing treatment by charging only ultrashort culms exceeding the range for enabling the threshing depth regulation. SOLUTION: This head-feeding type combine harvester is capable of carrying out the sensing of the culm length with a culm length sensing means when the conveying distance of grain culms after reaping sensed with a conveying distance sensing means becomes that corresponding to an installation position of the culm length sensing means and subsequently performing the sensing of ear tip positions of the grain culms with a threshing depth sensing means when the conveying distance of the grain culms sensed by the conveying distance sensing means after passing through the culm length sensing means becomes that corresponding to the installation position of the threshing depth sensing means. As a result, the head-feeding type combine is provided with a nipping and pressing releasing control means capable of operating a nipping releasing means and charging the grain culms into the threshing chamber when the culm length sensed by the culm length sensing means is a prescribed length or below and the ear tip inserting length into the threshing chamber sensed by the threshing depth sensing means is below the prescribed length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-contained combine.

[0002]

2. Description of the Related Art Conventionally, a self-removing combine harvester cuts a planted cereal culm by a cutting blade device, and transfers the cut cereal culm to a clamping conveyance device via a conveyance path including a pre-cutting section conveying device and a supply conveyance device. In this structure, the spike side of the grain culm is transported while being inserted into the handling chamber by the holding and transporting device, and in this transporting process, the grain tipping action of the handle cylinder is applied to the spike side of the grain culm. In addition, the tip position of the grain stalk to be inserted into the handling room is detected by the handling depth detection means installed at the end of the transport path, and based on the detection result, the transfer from the pre-cutting section transport device to the clamping transport device is performed. A handle depth control means is provided for adjusting the take-over and holding position of the cereal stem to maintain the insertion length of the spike tip in the handling room at a predetermined length.

[0003] However, as in the case where the pre-cutting section is raised to perform ridge-side cutting, the cut culm may be out of the adjustable range of the handling depth by the handling depth control means. In the case of short culm, the tip side could not be sufficiently inserted into the handling room, resulting in unhandled portions. Therefore, in order to deal with this, for example,
As disclosed in Japanese Patent Application Laid-Open No. 9-29471 and Japanese Patent Application Laid-Open No. Hei 6-38612, etc., a clamping / conveying device which transports a grain culm while inserting the spike tip side into a handling chamber, Handling depth detecting means for detecting the position of the tip of the grain culm inserted into the room, clamping release means for releasing and adjusting the clamping state of the harvested grain culm by the clamping and conveying device, and detection by the handling depth detecting means. A technique has been developed in which, when the inserted length of the spike tip into the handling room is shorter than a predetermined length, a clamping release control means for operating the clamping release means to feed the grain culm into the handling room. This technique is intended to release the clamping state of the clamping and conveying device and to pull the whole grain culm into the handling room by using the handling action of the handling cylinder to process the grain.

[0004]

In the above-mentioned prior art, the length of grain stalk inserted into the handling room is determined to be a predetermined length by means of a handling depth detecting means installed at the end of the conveying path. When it is detected that the stalk is less than the above, the clamping state of the grain stalk is released. However, even if it is detected by the handling depth detecting means that the insertion length of the cereal stalk inserted into the handling chamber is equal to or less than a predetermined length, this cereal stem is not necessarily handled by the handling depth control means. It is not always an ultrashort culm that falls outside the adjustable range of handling depth. That is, since the handling depth detecting means is provided for performing the normal pinching and threshing by the handling depth control means, the grain culm can be provided only by the handling depth detecting means alone. It is not possible to identify the very short culm that cannot be threshed.

[0005] Therefore, although the culm can be normally pinched and threshed by the handling depth control means,
In such a case, the clamped state is released and pulled into the handling room. In such a case, the handling room becomes overloaded, and the handling room is clogged, abnormal noise occurs, and a large amount of straw waste causes sorting failure. And other problems.

[0006]

The present invention employs the following technical means to solve the above-mentioned problems. That is, the grain stalks cut by the cutting blade device 1 are transferred to the clamping and conveying device 5 via the conveying path 4 composed of the pre-cutting treatment section conveying device 2 and the supply conveying device 3, and the clamping and conveying device 5 causes the tip of the grain culm to grow. In the self-removing type combine configured to perform threshing by inserting its side into the handling room 6, the handling depth for detecting the position of the tip of the grain stalk inserted into the handling room 6 by being installed at the end of the transport path 4. And adjusting the take-over position of the grain stalk from the pre-harvesting section transporting device 2 to the clamping transporting device 5 based on the detection results of the cutting depth detecting device 7 and the handling depth detecting device 7 and into the handling chamber 6. A handle depth control means 8 for maintaining the spike tip insertion length at a predetermined length, a culm length detection means 9 installed on the start end side of the transport path 4, and a transport distance of grain culms in the transport path 4. Transport distance detecting means 10 for detecting
And clamping release means 11 capable of releasing the clamping of the cereal culm in the clamping and conveying device 5, so that the transport distance of the grain culm P detected by the transport distance detecting means 10 after cutting is determined by the culm length detection. When the position corresponds to the installation position of the means 9, the culm length detection means 9 performs culm length detection, and then, after the grain culm P detected by the transport distance detection means 10 passes through the culm length detection means 9. When the transfer distance of the culm corresponds to the installation position of the handling depth detecting means 7, the handling depth detecting means 7 detects the tip position of the grain culm, and as a result, the culm length detecting means When the culm length detected by the handle 9 is equal to or less than a predetermined length, and when the insertion length of the tip into the handling chamber 6 detected by the handling depth detection means 7 is less than the predetermined length, the clamping release is performed. Activate means 11 to handle culm Pinching release control means put into the inner 12
And a self-removing combine.

[0007]

In the cutting and threshing operation using the self-removing type combine, the culm to be planted in the field is cut by the cutting blade device 1, and the culm is transported by the pre-cutting section transport device 2 and the supply transport device 3. 4 to the clamping and conveying device 5, and the clamping and conveying device 5 causes the front end side of the grain stem to be handled in the handling chamber 6.
And threshing.

In this cutting and threshing operation, the handling chamber 6 is detected by the handling depth detecting means 7 installed at the end of the transport path 4.
The spike tip position of the cereal stalk inserted into the inside is detected, and based on the detection result, the handling depth control means 8 determines the take-over and holding position of the cereal stalk from the pre-cutting section transporting device 2 to the clamping and transporting device 5. The length of insertion of the tip into the handling room 6 is adjusted to a predetermined length.

The transport distance of the grain culm in the transport path 4 is detected by the transport distance detecting means 10, and the transport distance of the culm P after cutting is detected by the transport distance detecting means 10. When the position corresponds to the installation position of the detecting means 9, the culm length detecting means 9 detects the culm length. Then, subsequently, the transport distance of the grain culm P detected by the transport distance detecting means 10 after passing through the culm length detecting means 9 corresponds to the installation position of the handling depth detecting means 7. In this case, the handling depth detecting means 7 detects the position of the tip of the grain stalk.

As a result, the culm length of the grain culm P detected by the culm length detecting means 9 is equal to or less than a predetermined length, and the handling room of the grain culm P detected by the handling depth detecting means 7 is detected. When the insertion length of the tip into the tube 6 is shorter than a predetermined length, the clamping release means 11 is operated by the clamping release control means 12 to release the clamping of the cereal culm, and the cereal culm is handled by the handling action of the handling cylinder. It is drawn into the chamber 6 for threshing.

[0011]

The culm length detecting means 9 and the handling depth detecting means 7 make it possible to specify that the grain culm to be threshed is an ultrashort culm for which normal pinching and threshing is inappropriate. Only the ultrashort culm can be put into the handling room 6. As a result, it is possible to prevent the handling room 6 from being overloaded, thereby preventing obstacles such as clogging and abnormal noise in the handling room 6 and sorting failure due to the generation of a large amount of straw waste. Processing can be performed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A self-removing combine as an embodiment of the present invention will be described. The body of the combine has a thruster 15 and a grain storage device 16 arranged side by side with a vehicle body 14 having an endless track type traveling device 13 at a lower portion. The pre-processing unit 17 is pivotally mounted around a left-right support shaft, and is provided so as to be vertically movable by the expansion and contraction operation of a hydraulic cylinder 18. Further, a left-right support shaft of the pre-cutting unit 17 or a suspension link (not shown) that extends from the vehicle body 14 to the pre-cutting unit 17 includes:
A potentiometer 27 for detecting the position of the pre-cutting unit 17 with respect to the vehicle body 14 is provided. A control section 19 is provided at a position in front of the grain storage device 16.

The cutting pre-processing section 17 is provided with a plurality of weeds 20, 20,..., Raising devices 21, 21,.
Is provided. The plurality of weeds 20, 20,...
A predetermined interval (corresponding to the strip interval) is arranged at the front end of the pre-cutting unit 17 in the left-right direction. The raising devices 21 and
1 are arranged obliquely behind the weeds 20, 20,... So as to cause the planted grain culm introduced between the weeds 20, 20,. The cutting blade device 1
Are configured in a clipper format, and the raising devices 21, 21.
Be placed behind. The pre-cutting section transport device 2 is composed of a plurality of squeezing rotary members (not shown) and a plurality of clamping transport chains following the rotative rotating members. At the upper side of the cutting blade device 1 in the above. Then, the end portions of the plurality of clamping / conveying chains are merged at one position deviated to one left side to form the conveying end portion of the pre-cutting-section conveying device 2.

In addition, a left grain culm presence / absence sensor 25L is installed above the cutting blade device 1 in correspondence with the weeds 20 at the left end, and a predetermined distance behind the cutting blade device 1 and A contact type left grain culm presence / absence sensor 9L is installed as a culm length detecting means 9 at a position above the cutting blade device 1 with a vertical interval H1. Similarly, the right cereal stalk presence / absence sensor-2 corresponding to between the weeds 20 at the right end.
5R and right culm presence / absence sensor-9R are installed. With this configuration, the grain stalks cut by the cutting blade device 1 are:
When the cutting blade device 1 and the left and right grain stalk presence / absence sensors 9L and 9R are longer than the vertical interval H1, the left and right grain stalk presence / absence sensors 9L and 9R are turned ON by contact of the tip portions thereof. The cutting blade device 1 and the left and right grain stalk presence / absence sensors -9
In this embodiment, the vertical distance H1 between the upper and lower limbs L and 9R is set to 50 cm as the reference length of the ultrashort culm, but may be adjusted to an appropriate distance such as changing to 40 cm.

Further, there is provided a supply / transportation device 3 for taking over and transporting the grain culm from the transportation end portion of the transportation device 2 of the pre-cutting section to the clamping transportation device 5 described later. The supply and transport device 3
Consists of a head-end transporting device 3a and a stock-source transporting device 3b,
The starting end of the stock transfer device 3b faces the transfer end of the pre-cutting-section transfer device 2, and the end of the stock transfer device 3b faces the start end of the clamping transfer device 5 described later. The feeding and conveying device 3 is configured to be rotatable up and down coaxially with the horizontal support shaft of the cutting pre-processing unit 17, and to control the handling depth based on the detection result of the handling depth detection unit 7. 8 is operated to rotate up and down, thereby adjusting the take-over and holding position of the grain stalk from the pre-cutting section transporting device 2 to the clamping and transporting device 5 so that the insertion length of the tip into the handling chamber 6 is determined. Configure to maintain length. Note that the handling depth detecting means 7 includes
Deep handling detection grain stalk presence / absence sensor -7a arranged at a predetermined interval in the culm direction of the transported grain culm in the middle of the conveyance,
And a cereal stalk presence / absence sensor 7b for shallow-handling detection. In addition, the handling depth control means 8 has a controller (not shown), on the input side thereof, a grain handling presence / absence sensor 7a for deep handling detection and a grain presence / absence detection for shallow handling detection. A sensor (not shown) is connected to the output side of the sensor 7b for forward / reverse driving of the electric motor 22 for vertically rotating the supply / conveyance device 3. According to this configuration, the state in which the tip of the transported grain culm comes into contact with only the cereal stalk presence / absence sensor 7b for detecting shallow handling and turns on this sensor is a neutral state, and the electric handling is determined to be an appropriate handling depth. The motor 22 remains stopped. A state where the tip of the transported grain culm contacts not only the cereal stalk presence / absence sensor 7b for shallow handling detection but also the cereal stalk presence / absence sensor 7a for deep handling detection and turns on both sensors. Then, it is determined that the electric motor 2 is in the deep handling state.
2 is rotated forward, and the supply / conveyance device 3 is raised and rotated to adjust in the shallow handling direction. In addition, the tip of the transported grain culm does not contact not only the grain handling sensor 7a for deep handling detection but also the grain sensing sensor 7b for shallow handling detection, and both sensors are OFF. Then, the electric motor 22 is rotated in the reverse direction, and the supply / conveyance device 3 is rotated downward to adjust in the deep handling direction. In this way,
The insertion length of the tip into the handling room 6 described later is maintained at a predetermined length. The vertical interval H1 between the cutting blade device 1 and the left and right grain culm presence / absence sensors 9L, 9R is set in accordance with the range in which the handling depth of the supply / transport device 3 can be adjusted.
Even if the grain culm to be detected is an ultra-short culm that cannot turn on the shallow-handling detection grain culm presence / absence sensor 7b with the supply and transport device 3 lowered most, the presence of left and right grain culms Some sensors 9L and 9R are set so that the position of the tip can be detected.

The transport system formed by the pre-cutting section transport device 2 and the subsequent feed transport device 3 is referred to as a transport path 4. Further, the raising device 21, the cutting blade device 1, the pre-cutting treatment section transfer device 2, and the supply transfer device 3 are configured to be driven in conjunction with each other by a drive input from the vehicle body 14 to the pre-cutting treatment portion 17. The transport distance of the grain culm in the transport path 4 can be calculated from the detection result of the harvesting rotation sensor 28 that detects the number of input rotations (number of input pulses) to the pre-cutting processing unit 17. The cutting rotation sensor 28 is the transport distance detecting means 10.

In the traveling mission 46 for driving the endless track type traveling device 13, a vehicle speed sensor 47 for detecting the rotation speed of the transmission shaft may be used as the transport distance detecting means 10. In this case, a transmission ratio changing means (not shown) capable of arbitrarily switching a transmission ratio (reduction ratio) according to the degree of lodging of the culm to be cut is provided on an input transmission path to the pre-cutting processing unit 17, Synchronization control is performed to maintain the vehicle speed and the number of revolutions input to the pre-cutting unit 17 at this transmission ratio. And the vehicle speed sensor 4
The detection result (the number of detected pulses) from No. 7 is converted by the transmission ratio switched by the transmission ratio changing means, and can be calculated as the transport distance of the grain stem in the transport path 4.

At the side of the threshing device 15, the culm transported from the transport path 4 is taken over, and the threshing device 15
There is provided a pinching and conveying device 5 for conveying the grain stem further backward with the spike end side inserted therein. The threshing device 15 is provided with a handling cylinder 23 in the handling chamber 6 so as to be rotatable around a horizontal axis in the longitudinal direction of the machine body.
Thus, the front side inserted into the handling room 6 for the grain stalks to be transported rearward while the base side is pinched is handled. A sorting room 24 is provided below the handling room 6.

The configuration of the holding and conveying device 5 will now be described. First, a plurality of holding members 29 are connected to each other by pins 30 so as to be rotatable up and down to form a holding rail 31. A plurality of rods 32 connected to the upper part of the holding rail 31
Are slidably mounted vertically on a support table 33 fixed at an upper position on the side of the handling room 6, and a downward biasing spring 34 is provided on each of the plurality of rods 32. The holding rail 31 constructed as described above is urged from above to the approaching direction, that is, the descending direction, to the feed chain 35 which is rotatably provided below the side of the handling chamber 6. The feed chain 35 and the holding rail 31 hold and transport the culm in a sideways posture.

Then, one end of the rotating arm 36 is connected to the upper end of the rod 32 at the middle part in the front-rear direction,
Is connected to the piston of a hydraulic cylinder 38 via an interlocking tension spring 37 to form the holding release means 11. The operation of the hydraulic cylinder 38 causes the rod 3 to move through the interlocking tension spring 37 and the rotating arm 36.
2 is lifted, and the vertical spacing between the intermediate holding member 29 and the feed chain 35 is enlarged to release the holding of the grain stalk.

Then, on the input interface 40 side of the controller 39, the right grain stalk presence / absence sensor 25R, the left grain stalk presence / absence sensor 25L, the right grain stalk presence / absence sensor 9R, A left culm presence / absence sensor-9L, a cereal culm presence / absence sensor 7a for deep handling detection, a cereal culm presence / absence sensor 7b for shallow handling detection, a potentiometer 27, a cutting rotation sensor 28, an automatic A control on / off switch 41 is connected, and an output interface 42 is connected to an ascending solenoid 43 and an ascending solenoid 44 of an electromagnetic valve for operating the hydraulic cylinder 38 to release the clamp. Means 12 is constituted. In addition, a grain stalk sensor 45 arranged closer to the grain stalk stock side than the grain stalk presence / absence sensor 7b for shallow handling detection may be connected to the input interface 40 side of the controller 39. Also, on the input interface 40 side of the controller 39, the vehicle speed sensor 47 and a transmission ratio detecting unit 48 for detecting the transmission ratio switched by the transmission ratio changing unit are provided as the transport distance detecting unit 10. May be connected.

Next, the operation will be described. The harvesting and threshing work by a self-removing combine is performed by dividing a culm to be planted in a field into a weeding body 20.
And the culm is cut by the cutting blade device 1, and the culm is transferred to the clamping and conveying device 5 through the conveying path 4 including the pre-cutting processing unit conveying device 2 and the supply conveying device 3. The pinching side of the grain stalk is inserted into the handling room 6 by the clamping and conveying device 5 to perform threshing.

In this cutting and threshing operation, as described above,
By the handling depth detecting means 7 installed at the end of the transport path 4, the tip position of the cereal stalk inserted into the handling chamber 6 is detected,
Based on this detection result, the gripping position of the grain culm from the pre-cutting section transport device 2 to the gripping transport device 5 is adjusted by the gripping depth control means 8 to adjust the insertion length of the tip into the handling chamber 6. Maintain the specified length.

Then, as shown in the flowchart, in the case of high cutting, that is, the detection result of the potentiometer 27 exceeds a predetermined value, and the left and right grain culm presence / absence sensors 25
When the R / 25L detects the presence of the grain culm, the transport distance detecting means 10 starts calculating the transport distance of the high-cut grain culm P. For example, even if the detection result reaches the installation position of the left culm presence / absence sensor 9L, if the left cereal culm presence / absence sensor 9L is not turned on, it is determined that the culm is an ultra-short culm, and the conveyance distance is detected again. The calculation of the transport distance of the grain stem P by the means 10 is started.

The detection result is a cereal stalk presence / absence sensor 7a for deep handling detection and a cereal stalk presence / absence sensor 7b for shallow handling detection.
When the sensor position corresponds to the installation position,
The tip position of the grain culm P is detected by 7a and 7b.
As a result, when both the grain handling sensor 7a for deep handling detection and the grain sensing sensor 7b for shallow handling detection are OFF, the controller 39 ascends through the output interface 42 via the output interface 42. Output is made to the solenoid 43 for a certain time,
The interlocking tension spring 37 is operated by the operation of the hydraulic cylinder 38.
Then, the rod 32 is pulled up via the rotating arm 36, and the vertical distance between the holding member 29 at the intermediate portion and the feed chain 35 is increased to release the holding of the grain culm. Room 6
Threshing by putting into

After releasing the pinching of the cereal stem in this way,
The detection result of the potentiometer 27 is equal to or less than a predetermined value, or the left and right grain stalk presence / absence sensors 25R and 25L are OF
F, or when the cereal stalk presence / absence sensor 7b for shallow handling detection is turned on, the controller 39 outputs a signal to the descending solenoid 44 for a certain period of time, and the clamping member 2 in the middle portion
The vertical distance between the feed chain 9 and the feed chain 35 returns to the original state, and the clamping of the cereal stem is resumed.

As described above, a grain stalk presence / absence sensor-9L / 9
The grain culm to be threshed is an ultrashort culm for which normal pinching and threshing is unsuitable by R and the grain culm presence / absence sensor 7a for deep handling detection and the grain culm presence / absence sensor 7b for shallow handling detection Therefore, only such an ultrashort culm can be introduced into the handling room 6. As a result, it is possible to prevent the handling room 6 from being overloaded, thereby preventing obstacles such as clogging and abnormal noise in the handling room 6 and sorting failure due to the generation of a large amount of straw waste. Processing can be performed.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine showing an embodiment of the present invention.

FIG. 2 is a partial side view of one embodiment of the present invention.

FIG. 3 is a partial explanatory side view of one embodiment of the present invention.

FIG. 4 is a partial plan view of an embodiment of the present invention.

FIG. 5 is an explanatory diagram of a part of the operation according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a part of the operation according to the embodiment of the present invention.

FIG. 7 is a flowchart in one embodiment of the present invention.

FIG. 8 is a block circuit diagram in one embodiment of the present invention.

FIG. 9 is a block circuit diagram of another configuration according to the embodiment of the present invention.

FIG. 10 is a block circuit diagram of another configuration according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cutting blade device 2 pre-cutting section transport device 3 supply transport device 4 transport route 5 clamping transport device 6 handling room 7 handling depth detecting means 8 grip depth control means 9 culm length detecting means 10 transport distance detecting means 11 clamping Release means 12 Nipping release control means

Claims (1)

[Claims] Claims 1. Grain stalks cut by a cutting blade device 1,
In order to carry out threshing by inserting the head of the cereal culm into the handling chamber 6 through the transporting path 4 comprising the pre-cutting treatment section transporting device 2 and the feeding transporting device 3, and transferring it to the holding chamber 6 by the clamping transporting device 5. In the self-contained combine to be constituted, a handle depth detecting means 7 for detecting a tip position of a grain culm inserted at the end of the transport path 4 and inserted into the handling chamber 6, and a handle depth detecting means 7, the position where the grain culm is handed over from the cutting pre-processing section transfer device 2 to the holding transfer device 5 is adjusted based on the detection result of 7 to maintain the length of insertion of the tip into the handling chamber 6 at a predetermined length. Notch depth control means 8 and the transport path 4
Culm length detecting means 9 installed on the starting end side, and transport distance detecting means 10 for detecting the transport distance of the grain culm in the transport path 4
And clamping release means 11 capable of releasing the clamping of the cereal culm in the clamping and conveying device 5, so that the transport distance of the grain culm P detected by the transport distance detecting means 10 after cutting is determined by the culm length detection. When the position corresponds to the installation position of the means 9, the culm length detection means 9 performs culm length detection, and then, after the grain culm P detected by the transport distance detection means 10 passes through the culm length detection means 9. When the transfer distance of the culm corresponds to the installation position of the handling depth detecting means 7, the handling depth detecting means 7 detects the tip position of the grain culm, and as a result, the culm length detecting means When the culm length detected by the handle 9 is equal to or less than a predetermined length, and when the insertion length of the tip into the handling chamber 6 detected by the handling depth detection means 7 is less than the predetermined length, the clamping release is performed. Activate means 11 to handle culm Pinching release control means put into the inner 12
A self-contained combine characterized by the following features.