JP2019004867A - Harvester - Google Patents

Abstract

To provide an arrangement constitution of crop sensors capable of improving the accuracy of field work data in a harvester.SOLUTION: A harvester includes: a harvesting part 4 provided in the front of a machine body and harvesting crops in a field; and a plurality of crop sensors 31,32,33,34 arranged at intervals in the right and left direction in the harvesting part 4, and detecting the existence of crops by touching the crops. A harvesting width corresponding to a crop group harvested by a really executed harvesting work, in a workable width allowing a harvesting work by the harvesting part 4, can be detected based on which crop sensor among the crop sensors 31,32,33,34 detects crops. For instance, when the harvesting width is large, crops to be introduced to the harvest part 4 are many, and when the harvesting width is small, crops to be introduced to the harvest part 4 are less.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a configuration for detecting a harvest state in a harvester.

  For example, in rice cultivation, a field management system has been proposed in which various field work data collected by a rice transplanter (or seeder), a tractor, and a combiner are combined with a GPS function to improve harvesting.

  In Patent Document 1 disclosed as the above-mentioned field management system, one field is divided into a large number of small areas, and seedling planting data (seeding data) by a rice transplanter (seeding machine) corresponding to each area of the field. ), Collecting and accumulating field work data such as tillage data by tractor and harvest data by harvest (yield and taste), seedling planting (seeding) with rice transplanter (seeding machine) in the next year, tractor Improvements such as tillage have been made.

JP 2017-68533 A

In the field management system as described above, in order to improve the performance, it is necessary to improve the accuracy of the field work data by the rice transplanter (seeding machine), tractor and combine.
An object of this invention is to improve the precision of the field work data of a harvester paying attention to harvesters, such as a combine.

The harvesting machine of the present invention is
A harvesting section provided at the front of the aircraft to harvest crops in the field;
A plurality of crop sensors that are disposed in the harvesting section at intervals in the left-right direction and that detect the presence of the crop in contact with the crop are provided.

In the harvesting machine, the harvesting part at the front part of the machine has a large width (left and right width). Therefore, when a plurality of crop sensors are provided in the harvesting part as in the present invention, which crop sensor detects the crop. Based on this, it is possible to detect the harvest width corresponding to the crop group harvested by the harvesting work that is actually performed, among the workable widths that can be harvested by the harvesting unit.
For example, if the harvest width is large, it can be determined that there are many crops introduced into the harvesting section, and if the harvest width is small, it can be determined that there are few crops introduced into the harvesting section.

According to the present invention, based on which crop sensor detects a crop, it is possible to detect in which part of the harvesting part the crop is introduced within the range of the width of the harvesting part.
For example, judging the state where crops are introduced into the right part of the harvesting part, the state where crops are introduced into the left part of the harvesting part, the state where crops are introduced into the left and right center part of the harvesting part, etc. Can do.

  As described above, according to the present invention, by detecting the harvest width, which part of the harvesting part the crop is introduced, and the like, and adding these detection data to the field work data, The accuracy of field work data can be improved.

In the present invention,
A transport unit for transporting the crop from the harvesting unit to the machine body is connected to the rear part of the harvesting unit,
In the harvesting part,
A horizontal transport body that is rotationally driven around the axis in the left-right direction so as to transport the crop along the left-right direction of the harvesting section, toward the entrance of the transport section;
A frame body that rotatably supports the horizontal transport body and to which the transport section is coupled;
It is preferable that the crop sensor is provided in the frame body.

  In the harvester, a transport unit is connected to the rear part of the harvesting unit, and crops in the field are harvested and collected by the harvesting unit, and may be transported from the transport unit to the machine body side. In this case, the harvesting unit is provided with a frame body and a horizontal transport body, and the harvested crop is transported in the left-right direction by the horizontal transport body of the harvesting unit, and collected at the entrance of the transport unit, and is collected by the transport unit on the machine body side. There is something to be transported to.

Since the harvested crop is transported in contact with the horizontal transport body of the harvesting section, it is also in contact with the frame body of the harvesting section. Therefore, the crop sensor is provided in the frame body of the harvesting section as in the present invention. Thus, the certainty of crop detection by the crop sensor can be increased.
According to the present invention, by providing a crop sensor in the frame body of the harvesting section which is an existing structure, it is advantageous in terms of simplifying the support structure of the crop sensor.

In the present invention,
It is preferable that the crop sensor is provided in a portion of the frame body that is located below the horizontal transport body.

  Since the harvested crop is highly likely to come into contact with the lower part of the frame body of the harvesting part, the crop sensor is located at the part of the frame part of the harvesting part located below the horizontal transport body as in the present invention. By providing, the certainty of the detection of the crop by a crop sensor can further be improved.

In the present invention,
It is preferable that the crop sensor is provided at the bottom of the frame body.

  In a state where the harvested crop is likely to come into contact with the lower part of the frame body of the harvesting section, the crop sensor is provided with the crop sensor at the bottom of the frame body of the harvesting section as in the present invention. The certainty of detection can be further increased.

In the present invention,
It is preferable that the crop sensor is arranged at a position on the outer peripheral side of the rotation locus of the horizontal transport body.

  According to the present invention, the horizontal conveying body of the harvesting unit does not interfere with the crop sensor even if it is driven to rotate, so that damage to the crop sensor and the horizontal conveying body of the harvesting unit can be avoided without difficulty.

In the present invention,
An opening is formed in the frame body;
It is preferable that the detection unit of the crop sensor is provided so as to protrude from the opening and is configured to swing in contact with the crop.

Some contact-type sensors include a main body and a detection unit that is swingably supported by the main body.
According to the present invention, the main body of the crop sensor can be protected by the frame body by projecting the detection section of the crop sensor from the opening of the frame body and detecting the crop by the detection section of the crop sensor. This is advantageous in terms of the durability of the crop sensor.

In the present invention,
It is preferable that a gap filling member for filling a gap between the detection unit and the opening is provided.

  According to the present invention, when the detection unit of the crop sensor swings in a state of protruding from the opening of the frame body, the gap between the detection unit of the crop sensor and the opening of the frame body is filled with the gap filling member. Therefore, it is possible to suppress the state where the crop leaks through the gap.

In the present invention,
A wall portion extending downward is provided on an outer peripheral portion of a portion protruding from the opening portion in the detection portion, and a portion protruding from the opening portion in the detection portion is formed in a box shape by the wall portion. It is preferable that

According to the present invention, in the crop sensor, the strength of the detection unit of the crop sensor can be improved by forming the portion protruding from the opening in the detection unit in a box shape.
When the detection part of the crop sensor protrudes from the opening of the frame body, according to the present invention, even if a gap is generated between the detection part of the crop sensor and the opening of the frame body, this gap is narrow due to the wall part. Therefore, it is possible to suppress the state where the crop leaks through the gap.

In the present invention,
An upper stopper portion that determines the upper swing limit of the detection portion by hitting the frame body and the lower stopper portion that determines the lower swing limit of the detection portion by hitting the frame body. It is suitable if it is provided.

  According to the present invention, when the crop introduced into the harvesting unit comes into contact with the detection unit of the crop sensor, even if the crop tries to swing the detection unit of the crop sensor above and below more than necessary, the upper stopper unit and Since the detection part of the crop sensor is stopped at the upper and lower swing limits by the lower stopper part, damage to the crop sensor due to excessive swinging can be avoided.

In the present invention,
A transport unit for transporting the crop from the harvesting unit to the machine body is connected to the rear part of the harvesting unit,
It is preferable that the crop sensor is arranged in the harvesting unit so as to be divided into a right side position and a left side position with reference to the left and right center of the entrance portion of the transport unit.

In the harvester, a transport unit is connected to the rear part of the harvesting unit, and crops in the field are harvested and collected by the harvesting unit, and may be transported from the transport unit to the machine body side.
According to the present invention, in the harvesting unit, the crop sensor is provided at the right side position and the left side position with respect to the left and right center of the entrance part of the transport unit, and is arranged in a wide range along the left and right direction of the harvesting unit. Therefore, it is possible to appropriately detect the harvest width and in which part of the harvesting part the crop is introduced.

In the present invention,
Preferably, the crop sensor is provided in the harvesting section at a position on the right side with respect to the inlet section, a position on the left side with respect to the inlet section, and a position on the front side of the inlet section.

  According to the present invention, in the harvesting section, the crop sensor is provided at a position on the front side of the entrance portion of the transport section in addition to the right side position and the left side position with respect to the entrance section of the transport section. Since the sensors are arranged in a wide range along the left-right direction of the harvesting part, it is possible to appropriately detect the harvesting width and in which part of the harvesting part the crop is introduced.

In the present invention,
The crop sensor provided on the front side of the entrance in the harvesting unit is provided on the front side of the crop sensor provided on the right side and the left side of the entrance in the harvesting unit. It is preferable that

  When the harvested crop is transported in the left-right direction by the horizontal transport body of the harvesting section, collected at the entrance portion of the transport section, and transported to the machine body side by the transport section, in the front side portion of the entrance section of the transport section, The crop will be concentrated.

According to the present invention, the crop sensor provided on the front side of the entrance portion of the guide portion is in a state of being arranged slightly away from the front side portion of the entrance portion of the transport portion.
As a result, even if the crop concentrates on the front part of the entrance of the transport unit, the crop is not collected by the crop sensor and develops into clogging of the crop, and the crop is smoothly collected at the entrance of the transport unit. And then transported to the machine body side by the transport unit.

In the present invention,
The crop sensor provided at a position on the right side and a position on the left side with respect to the inlet in the harvesting unit is provided with a detection unit that contacts the crop and swings around a longitudinal axis. Is preferred.

  As a crop sensor, there is a sensor that includes a detection unit that comes into contact with a crop, and detects the presence of the crop by swinging the detection unit by the crop when the crop comes into contact with the detection unit.

According to the present invention, when the harvested crop is conveyed in the left-right direction by the horizontal conveyance body of the harvesting unit, the detection of the crop sensor provided at the right side position and the left side position with respect to the inlet part of the conveyance unit. The part swings in the left-right direction around the axial center in the front-rear direction.
As a result, the detection unit of the crop sensor swings along the flow of the conveyance of the crop, and the detection unit of the crop sensor does not interfere with the conveyance of the crop. There is no development of crop retention or crop clogging.

In the present invention,
It is preferable that the crop sensor provided on the front side of the entrance in the harvesting unit is provided with a detection unit that contacts the crop and swings around a horizontal axis.

The crop harvested at the front part of the entrance part of the transport part in the harvesting part is transported to the rear side as it is and reaches the entrance part of the transport part.
According to the present invention, the detection unit of the crop sensor provided on the front side of the entrance of the transport unit swings in the front-rear direction around the axis in the left-right direction.
As a result, the detection unit of the crop sensor swings along the flow of the conveyance of the crop, and the detection unit of the crop sensor does not interfere with the conveyance of the crop. There is no development of crop retention or crop clogging.

It is a whole side view of a combine. It is a cross-sectional top view of a cutting part and a conveyance part. It is a vertical side view of a cutting part and a conveyance part. It is a disassembled perspective view which shows the support structure of a crop sensor. It is a figure which shows the detection pattern of the grain straw by a crop sensor. It is a figure which shows the detection pattern of the grain straw by a crop sensor. In 1st another form of implementation of invention, it is sectional drawing of the vicinity of a crop sensor. In the 2nd another form of implementation of invention, it is sectional drawing of the vicinity of a crop sensor. In 3rd another form of implementation of invention, it is sectional drawing of the vicinity of a crop sensor. In 3rd another form of implementation of invention, it is sectional drawing of the vicinity of a crop sensor. In 3rd another form of implementation of invention, it is a perspective view of a crevice filling member. In 4th another form of implementation of invention, it is a front view of the cross section of the vicinity of a crop sensor. In 4th another form of implementation of invention, it is a side view of the cross section of the vicinity of a crop sensor. In 4th another form of implementation of invention, it is a disassembled perspective view of the vicinity of a crop sensor. In 5th another form of implementation of invention, it is a top view which shows arrangement | positioning of a crop sensor. In the 5th another form of implementation of invention, it is a figure which shows the detection pattern of the cereal by a crop sensor. In the 7th another form of implementation of invention, it is a figure which shows the detection state and non-detection state of a crop sensor.

In FIG. 1 to FIG. 11, an ordinary rice combine is shown as an example of a harvester.
1 to 11, F indicates the “forward direction” of the airframe 1, B indicates the “rearward direction” of the airframe 1, U indicates the “upward direction” of the airframe 1, and D indicates the “frontward direction” of the airframe 1. “Downward”. R indicates the “right direction” of the aircraft 1, and L indicates the “left direction” of the aircraft 1.

(Overall structure of the combine)
As shown in FIG. 1, an airframe 1 that is an airframe frame is supported by a right and left crawler type traveling device 2, and a transport unit 3 is supported at the front of the airframe 1 so as to be swingable up and down. Has been. A cutting unit 4 (corresponding to a harvesting unit) is provided, and a transport unit 3 is connected to the rear part of the cutting unit 4.

  As shown in FIG. 1, a driving cabin 5 that houses a driving part is supported on the right part of the front part of the machine body 1, a threshing device 6 is supported on the left part of the machine body 1, and A Glen tank 7 and a grain discharge device 8 are supported.

  As shown in FIG. 1, as the machine body 1 moves forward, cereal husks (corresponding to crops) in the field are cut by the cutting unit 4, and the chopped culms pass from the cutting unit 4 through the transport unit 3 and thresh. Supplied to the device 6. In the threshing device 6, the cereal is threshed, the recovered grain is supplied to the Glen tank 7, and the waste straw is discharged from the rear part of the threshing device 6. When the grain tank 7 is full of grains, the grains in the grain tank 7 are discharged to another transport vehicle (not shown) or the like by the grain discharging device 8.

(Combine control function)
In this combine, a position detection system (not shown) for detecting the position of the body 1 and the orientation of the body 1 and a yield sensor (not shown) for detecting the amount of grain recovered by the threshing device 6 are provided. Is provided.

  The position detection system is a satellite positioning system (GNSS: Global Navigation Satellite System), and a representative example is a GPS (Global Positioning System). The yield sensor continuously detects the weight of the grains recovered per unit time.

In this combine, in addition to the position detection system and the yield sensor described above, among the workable widths that can be harvested by the harvesting unit 4, the harvest corresponding to the culm group that has been harvested by the actual harvesting operation. A function of detecting the width W1 (harvesting width) (see FIGS. 5 and 6) by the crop sensors 31, 32, 33, and 34 (see FIG. 2) is provided.
Thereby, when one agricultural field is divided into many small areas, it is possible to collect and accumulate the detected value of the harvest amount sensor of each area of the agricultural field and the cutting width W1 of each area of the agricultural field.

(Composition of the cutting part)
As shown in FIGS. 1, 2, and 3, the cutting unit 4 includes a frame body 9 serving as a skeleton. The frame body 9 includes a bottom portion 10, a lateral side portion 11 connected to the right and left of the bottom portion 10, and a bottom portion. 10 and a rear side 12 connected to the rear of the lateral side 11.

  As shown in FIGS. 2 and 3, the front part (inlet part 3 a) of the transport part 3 is connected to the rear side part 12, and the transport part 3 is connected to the rear part of the cutting part 4. Yes. The transport unit 3 is offset and connected to the rear part of the cutting unit 4 so that the left and right center CL2 of the entrance 3a of the transport unit 3 is located on the left side of the left and right center CL1 of the cutting unit 4.

  As shown in FIGS. 2 and 3, a clipper-type cutting device 13 is supported on the front portion of the bottom portion 10 in the left-right direction, and a divider 14 is connected to the front portion of the lateral side portion 11. As shown in FIG. 1, the right and left arms 15 supported on the rear portion of the frame body 9 extend to the front side, and the reel 16 rotates around the left and right axis P1 of the front portion of the arm 15. It is supported so that it can be driven freely.

  As shown in FIGS. 1, 2, and 3, in the frame body 9, the horizontal transport body 17 is supported by the lateral side portion 11 so as to be rotatable around the axis P <b> 2 in the left-right direction. The horizontal transfer body 17 includes a cylindrical trunk portion 17a, a right spiral portion 17b and a left spiral portion 17c connected to an outer peripheral portion of the trunk portion 17a, and a rod-shaped scraping portion 17d.

  As shown in FIG. 2, the right spiral portion 17 b of the horizontal transport body 17 is positioned on the right side of the inlet portion 3 a of the transport portion 3, and the left spiral portion 17 c of the horizontal transport body 17 is positioned at the inlet portion 3 a of the transport portion 3. Located on the left side of. The scraping portion 17 d of the horizontal conveyance body 17 is located on the front side of the inlet portion 3 a of the conveyance unit 3.

  As shown in FIGS. 1, 2, and 3, as the machine body 1 moves forward, the culm between the right and left dividers 14 is scraped by the reel 16 toward the lateral carrier 17, while The cereals that have been cut by the cutting device 13 and cut off are introduced between the horizontal carrier 17 and the bottom 10 by the rotation of the horizontal carrier 17.

As shown in FIG. 2, the cereals introduced in the vicinity of the right spiral portion 17 b of the horizontal transport body 17 are transported to the left side by the right spiral portion 17 b of the horizontal transport body 17, and the scraping portion 17 d of the horizontal transport body 17. Is supplied to the inlet 3a of the transport unit 3.
The cereals introduced in the vicinity of the left spiral portion 17c of the lateral transport body 17 are transported to the right side by the left spiral portion 17c of the lateral transport body 17, and the entrance portion of the transport section 3 by the scraping portion 17d of the lateral transport body 17 3a.
The cereals introduced in the vicinity of the scraping portion 17 d of the lateral transport body 17 are transported to the rear side by the scraping portion 17 d of the lateral transport body 17 and supplied to the inlet portion 3 a of the transport unit 3.

(Conveyor configuration)
As shown in FIGS. 1, 2, and 3, the transport unit 3 includes a square cylindrical support case 18 that is supported at the front of the machine body 1 so as to be swingable up and down. Is connected to the rear side 12 of the cutting part 4.

  As shown in FIGS. 1, 2, and 3, the transport unit 3 includes a rotating body 19 that is driven to rotate about the axis P <b> 3 in the left-right direction inside the support case 18, and right and left wound around the rotating body 19. Transport chain 20, and a transport body 21 attached over the transport chain 20.

As shown in FIGS. 2 and 3, the rotating body 19 is driven to rotate, so that the transport body 21 moves toward the threshing device 6 along the bottom 18 a of the support case 18.
As described in the preceding section (the configuration of the cutting part), when the cereal is supplied from the reaping part 4 to the inlet 3a of the transport unit 3, the cereal is moved along the bottom 18a of the support case 18 by the transport body 21. It is conveyed and supplied to the threshing device 6.

As shown in FIGS. 2 and 3, right and left harvested crop sensors 22 and 23 are provided on the right and left sides of the inlet 3 a of the transport unit 3.
The harvested crop sensors 22 and 23 are provided with arm-shaped detection units 22a and 23a that can swing back and forth around the axis P4 in the left-right direction, and the entrance of the transport unit 3 with respect to the transport chain 20 in plan view. It is arranged on the left and right center CL2 side of 3a, and is arranged on the front side of the rotating body 19 in a side view so as not to interfere with the rotation locus of the conveying body 21.

  As shown in FIGS. 2 and 3, the grain crop is supplied to the inlet 3 a of the transport unit 3 from the cutting unit 4 and comes into contact with the detection units 22 a and 23 a of the harvested crop sensors 22 and 23. 22 and 23 detect the presence of the cereal.

(Placement of crop sensors in the cutting part)
In the state where the culm between the right and left dividers 14 is reaped and introduced into the reaper 4 as described in the previous section (Configuration of the reaper), the cereal comes into contact with the harvested culm. The four crop sensors 31, 32, 33, and 34 for detecting the presence of are provided in the cutting unit 4 as described below.

As shown in FIGS. 2 and 3, at the bottom 10 of the frame body 9, the front side of the right spiral portion 17 b of the horizontal transport body 17 (the right side of the harvesting section 4 (harvesting section) with respect to the inlet section 3 a of the transport section 3. The crop sensors 31 and 32 are provided at a position equivalent to
A crop sensor 34 is provided on the front side of the left spiral portion 17c of the horizontal conveyance body 17 (corresponding to a position on the left side with respect to the inlet portion 3a of the conveyance unit 3 in the cutting unit 4 (harvesting unit)).
A crop sensor 33 is provided on the front side of the scraping portion 17d of the horizontal conveyance body 17 (corresponding to the position on the front side of the inlet portion 3a of the conveyance unit 3 in the cutting unit 4 (harvesting unit)).

  Thereby, as shown in FIG.2 and FIG.3, the crop sensors 31-34 will be in the state with which the cutting part 4 (harvest part) was equipped with the space | interval in the left-right direction, and in the cutting part 4 (harvest part) The left and right center CL2 of the entrance 3a of the transport unit 3 is used as a reference, and the right side and the left side of the transport unit 3 are arranged so as to be positioned below the horizontal transport body 17 in the frame body 9. It is in the state provided for the part.

  As shown in FIG. 2, the crop sensors 31 and 32 overlap the rotation trajectory of the right spiral portion 17 b of the horizontal transport body 17 in plan view, and the crop sensor 34 is the left spiral portion 17 c of the horizontal transport body 17 in plan view. It overlaps with the rotation trajectory.

As shown in FIG. 3, the crop sensors 31, 32, and 34 are arranged on the front side (outer peripheral side) of the rotation trajectory of the right spiral portion 17 b and the left spiral portion 17 c of the lateral transport body 17 in a side view, and are laterally transported. It does not interfere with the right spiral portion 17b and the left spiral portion 17c of the body 17.
As shown in FIG. 2, the crop sensors 31, 32, and 34 and the scraping portion 17 d of the horizontal transport body 17 are different in the left-right direction, so that the crop sensors 31, 32, and 34 are scraped by the horizontal transport body 17. It does not interfere with the recessed portion 17d.

  As shown in FIGS. 2 and 3, a crop sensor 33 (corresponding to a crop sensor provided in front of the entrance 3 a of the transport unit 3 in the cutting unit 4 (harvesting unit)) is provided with crop sensors 31, 32, 34 ( The harvesting unit 4 (harvesting unit) is provided on the front side relative to the crop sensor provided at the right side position and the left side position with respect to the inlet 3a of the transport unit 3).

  As shown in FIGS. 2 and 3, the crop sensor 33 is disposed on the front side (outer peripheral side) of the rotation trajectory of the scraping portion 17 d of the lateral transport body 17, and the plan view of the entrance portion 3 a of the transport portion 3. It is arranged slightly to the right (crop sensor 31, 32 side) (left and right center CL1 side of the cutting unit 4) from the left and right center CL2.

  As shown in FIG. 2, the crop sensor 33 and the right spiral portion 17 b and the left spiral portion 17 c of the horizontal transport body 17 have different positions in the left-right direction. And it does not interfere with the left spiral portion 17c.

(Crop sensor structure)
As shown in FIG. 4, the crop sensors 31 to 34 include a main body portion 24 and a detection portion 25 that is swingably supported around the axis P <b> 5 of the main body portion 24. The detection unit 25 has an arm shape extending from the main body 24 and is biased upward (non-detection state) by a spring (not shown) built in the main body 24.

  As shown in FIG. 4, the frame body 9 has an opening 10 a formed in the bottom 10, and a gap filling member 26 such as a soft rubber plate and a presser plate 27 are provided. A T-shaped slit 26 a is formed in the gap filling member 26, and an opening 27 a is formed in the presser plate 27.

  As shown in FIG. 4, the gap filling member 26 is abutted against the lower surface of the bottom 10 so that the slit 26 a of the gap filling member 26 is positioned in the opening 10 a of the bottom 10. The presser plate 27 is applied to the lower surface of the gap filling member 26 so that the opening 27a of the presser plate 27 is positioned in the slit 26a of the gap filling member 26 and the opening 10a of the bottom portion 10, and the gap filling member 26 is pressed. The plate 27 is fixed to the lower surface of the bottom 10.

  As shown in FIG. 4, the main body 24 of the crop sensors 31 to 34 is connected to the lower surface of the presser plate 27, and the detection unit 25 of the crop sensors 31 to 34 is connected to the opening 27 a of the presser plate 27 and the gap filling. It protrudes diagonally upward through the slit 26 a of the member 26 and the opening 10 a of the bottom 10.

  The state shown in FIG. 3 is a state in which the cereal is not in contact with the detection unit 25 of the crop sensors 31 to 34, and the crop sensor 31 to 34 is a state in which the cereal is not detected. In this state, since the gap between the detection unit 25 of the crop sensors 31 to 34 and the opening 10a of the bottom 10 is filled with the gap filling member 26, the grain passes through the opening 10a of the bottom 10. There is no leakage.

  In the state shown in FIG. 3, when the cereal comes into contact with the detection unit 25 of the crop sensors 31 to 34, the detection unit 25 of the crop sensors 31 to 34 is pushed downward by the cereal and the slit 26 a of the gap filling member 26. It swings so that it may enter, and the crop sensors 31-34 will be in the state which detects a grain candy.

  In a state where the crop sensors 31 to 34 detect cereal straw, the detection unit 25 of the crop sensors 31 to 34 closes the opening 10a of the bottom 10 and the detection unit 25 of the crop sensors 31 to 34 and the bottom 10 The upper surface is substantially flush. Thereby, the flow of cereals is not hindered by the detection unit 25 of the crop sensors 31 to 34, and the grain does not leak through the opening 10 a of the bottom 10.

  As shown in FIGS. 2 and 3, in the crop sensors 31 and 32, the axis P <b> 5 of the main body 24 of the crop sensors 31 and 32 is directed in the front-rear direction, and the detection unit 25 of the crop sensors 31 and 32 is tilted to the left ( It extends to the upper side of the left and right center CL1 side of the cutting unit 4 (on the inlet 3a side of the transport unit 3).

  As shown in FIGS. 2 and 3, in the crop sensor 33, the axis P <b> 5 of the main body 24 of the crop sensor 33 faces in the left-right direction, and the detection unit 25 of the crop sensor 33 It extends to the upper side of the inlet portion 3a side.

  As shown in FIGS. 2 and 3, in the crop sensor 34, the axis P <b> 5 of the main body 24 of the crop sensor 34 faces in the front-rear direction, and the detection unit 25 of the crop sensor 34 moves diagonally to the right side (left and right of the cutting unit 4). It extends to the upper side of the center CL1 side (the inlet 3a side of the transport unit 3).

(Detection of cereal straw by crop sensor and harvested crop sensor)
As shown in FIG. 2, when the area between the right and left dividers 14 is divided into four areas A1, A2, A3, and A4, the crop sensor 31 corresponds to the area A1, and the crop sensor 32 corresponds to the area A2. The crop sensor 33 corresponds to the region A3, and the crop sensor 34 corresponds to the region A4.

  As shown in FIG. 2, when the cereals are introduced from the area A <b> 1, the cereals are transported to the left by the right spiral portion 17 b of the lateral transport body 17, and the scraping portion 17 d of the lateral transport body 17 It is supplied to the inlet portion 3a, and the culm comes into contact with the crop sensor 31, and the crop sensor 31 detects the culm. In this case, since the cereal comes into contact with the crop sensor 31 and then comes into contact with the crop sensor 32, the crop sensor 32 also detects the cereal.

  As shown in FIG. 2, when the corn straw is introduced from the area A2, the corn straw is conveyed to the left side by the right spiral portion 17b of the horizontal conveyance body 17, and the scraping portion 17d of the horizontal conveyance body 17 It is supplied to the inlet 3a, and the culm comes into contact with the crop sensor 32, and the crop sensor 32 detects the culm.

  As shown in FIG. 2, when the culm is introduced from the area A <b> 3, the cereal is conveyed to the rear side by the scraping part 17 d of the horizontal conveyance body 17, while contacting the crop sensor 33, It is supplied to the inlet 3a, and the crop sensor 33 detects cereal straw.

  As shown in FIG. 2, when the cereals are introduced from the region A4, the cereals are conveyed to the right side by the left spiral portion 17c of the horizontal conveyance body 17, and the scraping portion 17d of the horizontal conveyance body 17 It is supplied to the inlet portion 3a, and the culm comes into contact with the crop sensor 34, and the crop sensor 34 detects the culm.

  As shown in FIG. 2, the crop sensors 31, 32, and 34 overlap with the rotation trajectories of the right spiral portion 17 b and the left spiral portion 17 c of the horizontal transport body 17 in a plan view, and thus the right spiral of the horizontal transport body 17. The rotation of the portion 17b and the left spiral portion 17c brings the culm into a state of being pressed against the crop sensors 31, 32, 34, and the detection of the culm by the crop sensors 31, 32, 34 is highly reliable.

  Similarly, as shown in FIG. 2, the crop sensor 33 is located slightly on the lateral side of the rotation trajectory of the scraping portion 17 d of the horizontal transport body 17 in plan view, and therefore the crop sensor 17 of the horizontal transport body 17 Due to the rotation, the culm is pressed against the crop sensor 33, and the culm detection by the crop sensor 33 is highly reliable.

  As shown in FIGS. 2 and 3, when the cereals introduced from the regions A1, A2, A4 are conveyed to the left side (right side) by the right spiral portion 17b (left spiral portion 17c) of the lateral transport body 17, Since the crop sensor 33 is located in front of the crop sensors 31, 32, and 34, the grain straw does not contact the crop sensor 33, and the crop sensor 33 does not detect the grain straw.

As shown in FIG. 2 and FIG. 3, in the right and left harvested crop sensors 22, 23, when the culm is introduced from the areas A <b> 1 and A <b> 2, the right harvested crop sensor 22 is in a state of detecting the cereal. The harvested crop sensor 23 on the left is in a state of detecting or not detecting cereal straw.
When the culm is introduced from the region A3, at least one of the right and left harvested crop sensors 22, 23 enters a state of detecting the culm.
When the cereal is introduced from the region A4, the right harvested crop sensor 22 is in a state where the cereal is detected or not detected, and the left harvested crop sensor 23 is in a state where the cereal is detected.

(Detection pattern of cereals by crop sensor)
The cereal detection patterns B1 to B9 by the crop sensors 31 to 34 and the harvested crop sensors 22 and 23, and the reaping width W1 that is the left and right width of the cereal introduced from the field to the reaping unit 4 are described as follows. To do.

  As shown in the detection pattern B1 of FIG. 5, when the crop sensors 31 to 34 are in the detection state ON, and the right and left harvested crop sensors 22 and 23 are in the detection state ON, the cutting width W1 is in a state over the areas A1 to A4. I can judge. In this case, when the right or left harvested crop sensors 22 and 23 are in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B2 in FIG. 5, the crop sensors 31 to 33 are in the detection state ON, the crop sensor 34 is in the non-detection state OFF, the right harvested crop sensor 22 is in the detection state ON, and the left harvested crop sensor 23 is in the detection state. When the ON state or the non-detection state is OFF, the cutting width W1 can be determined as a state extending over the areas A1 to A3. In this case, when the right harvested crop sensor 22 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B3 of FIG. 5, when the crop sensor 31 is in the non-detection state OFF, the crop sensors 32 to 34 are in the detection state ON, and the right and left harvested crop sensors 22, 23 are in the detection state ON, the cutting width W1. Can be determined as a state over the areas A2 to A4. In this case, when the right or left harvested crop sensors 22 and 23 are in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B4 in FIG. 5, the crop sensors 31, 32 are in the detection state ON, the crop sensors 33, 34 are in the non-detection state OFF, the right harvested crop sensor 22 is in the detection state ON, and the left harvested crop sensor 23 is in the detection state B4. When the detection state is ON or the non-detection state is OFF, the cutting width W1 can be determined as a state over the areas A1 and A2. In this case, when the right harvested crop sensor 22 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in detection pattern B5 in FIG. 5, the crop sensors 31, 34 are in the non-detection state OFF, the crop sensors 32, 33 are in the detection state ON, the right harvested crop sensor 22 is in the detection state ON, and the left harvested crop sensor 23 is in the detection state ON. When the detection state is ON or the non-detection state is OFF, the cutting width W1 can be determined as a state over the areas A2 and A3. In this case, when the right harvested crop sensor 22 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B6 of FIG. 5, the crop sensors 31, 32 are in the non-detection state OFF, the crop sensors 33, 34 are in the detection state ON, the right harvested crop sensor 22 is in the detection state ON or the non-detection state OFF, When the harvested crop sensor 23 is in the detection state ON, it can be determined that the cutting width W1 is in a state over the areas A3 and A4. In this case, it can be determined that an abnormality has occurred when the left harvested crop sensor 23 is in the non-detection state OFF.

  As shown in the detection pattern B7 in FIG. 6, the crop sensors 31, 33, and 34 are in the non-detection state OFF, the crop sensor 32 is in the detection state ON, the right harvested crop sensor 22 is in the detection state ON, and the left harvested crop sensor 23 is in the detection state ON. When the detection state is ON or the non-detection state is OFF, the cutting width W1 can be determined as the state of the region A2. In this case, when the right harvested crop sensor 22 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B8 in FIG. 6, the crop sensors 31, 32, and 34 are in the non-detection state OFF, the crop sensor 33 is in the detection state ON, the right harvested crop sensor 22 is in the detection state ON or the non-detection state OFF, When the harvested crop sensor 23 is in the detection state ON or the non-detection state OFF, the cutting width W1 can be determined as the state of the region A3. In this case, when both the right and left harvested crop sensors 22 and 23 are in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B9 in FIG. 6, the crop sensors 31 to 33 are in the non-detection state OFF, the crop sensor 34 is in the detection state ON, the right harvested crop sensor 22 is in the detection state ON or the non-detection state OFF, and the left harvested crop When the sensor 23 is in the detection state ON, the cutting width W1 can be determined as the state of the region A4. In this case, when the left harvested crop sensor 23 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

(First embodiment of the invention)
The structure relating to the crop sensors 31 to 34 may be configured as shown in FIG.
As shown in FIG. 7, the slit 26a of the gap filling member 26 is abolished, and the gap filling member 26 is provided with an opening 26b and a bellows part 26c.

  As shown in FIG. 7, the detection unit 25 of the crop sensors 31 to 34 protrudes upward through the opening 26 b of the gap filling member 26, and the lower side and the bottom of the detection unit 25 of the crop sensors 31 to 34. The space between the 10 openings 10 a is covered by the bellows 26 c of the gap filling member 26. The bellows 26c of the gap filling member 26 is compressed as the cereals come into contact and the detection unit 25 of the crop sensors 31 to 34 swings downward.

(Second embodiment of the invention)
The structure relating to the crop sensors 31 to 34 may be configured as shown in FIG.
The gap filling member 26 shown in FIGS. 4 and 7 is abolished, and as shown in FIG. 8, a gap filling member 28 made of metal or hard rubber is connected to the detection unit 25 of the crop sensors 31 to 34. Yes.

  As shown in FIG. 8, in a state where the crop sensors 31 to 34 do not detect cereal grains, the detection unit 25 of the crop sensors 31 to 34 protrudes upward through the opening 10 a of the bottom 10, and the gap filling member 28. Is located on the upper side together with the detection part 25 of the crop sensors 31 to 34, and the opening 10 a of the bottom part 10 is filled with the gap filling member 28.

  As shown in FIG. 8, when the detection unit 25 of the crop sensors 31 to 34 swings downward due to the contact with the cereal, the gap filling member 28 is separated downward from the opening 10 a of the bottom 10, and the crop sensors 31 to 31 are moved. The front end portion of the 34 detection units 25 hits the bottom 10, and the opening 10 a of the bottom 10 is filled by the detection units 25 of the crop sensors 31 to 34.

(Third Another Embodiment of the Invention)
The structure relating to the crop sensors 31 to 34 may be configured as shown in FIGS.
The gap filling member 26 shown in FIGS. 4 and 7 is eliminated, and as shown in FIG. 11, gap filling members 29 and 30 such as a soft rubber plate other than the gap filling member 26 are provided.

  As shown in FIG. 11, the gap filling member 29 is formed with a channel-shaped slit 29a in plan view, and a cover portion 29b that is movable up and down. An opening 30a is opened in the gap filling member 30, two slits 30b are formed from the opening 10a, and a cover 30c that is movable up and down is formed.

  As shown in FIGS. 9 and 11, the gap filling member 29 is disposed on the upper side, the gap filling member 30 is disposed on the lower side, and the gap filling members 29 and 30 are fixed to the lower surface of the bottom portion 10 by the presser plate 27. ing.

  As shown in FIG.9 and FIG.11, the detection part 25 of the crop sensors 31-34 protrudes upwards through the opening part 30a of the gap filling member 30, and the crop sensors 31-34 do not detect cereals. In the state, the cover portion 29b of the gap filling member 29 is pushed upward.

  As shown in FIGS. 9 and 11, the opening 30 a of the gap filling member 30 is covered with the cover part 29 b of the gap filling member 29, and the cover part 29 b of the gap filling member 29 is pushed up to fill the gap. The opening generated in the member 29 is filled with the cover portion 30 c of the gap filling member 30.

  As shown in FIGS. 10 and 11, when the detection unit 25 of the crop sensors 31 to 34 swings downward due to contact with the cereal straw, the detection unit 25 of the crop sensors 31 to 34 covers the cover portion 30 c of the gap filling member 30. The cover 29b of the gap filling member 29 moves downward so as to follow the detection unit 25 of the crop sensors 31-34.

  As shown in FIGS. 10 and 11, when the cover portion 30 c of the gap filling member 30 is pushed down, the openings generated from the opening 30 a of the gap filling member 30 to the cover portion 30 c are crop sensors 31 to 34. And the cover portion 29 b of the gap filling member 29.

(Fourth embodiment of the invention)
The structure relating to the crop sensors 31 to 34 may be configured as shown in FIGS.

The structure of the crop sensors 31 to 34 will be described as follows.
On the detection part 25 of the crop sensors 31 to 34, the upper part 25a, three wall parts 25b, 25c, 25d extending downward from the outer peripheral part of the upper part 25a, and the upper part extending laterally from the lower part of the wall part 25b. A stopper portion 25e, a lower stopper portion 25f extending laterally from the lower portions of the wall portions 25b and 25c, and an intermediate wall portion 25g fixed downward to an intermediate portion of the upper portion 25a are provided.

  The detection unit 25 of the crop sensors 31 to 34 is formed by bending a plate material, and is formed in a box shape in which a rectangular lower side is opened in plan view by an upper side portion 25a and wall portions 25b, 25c, and 25d. (The part which protruded from the opening part 10a in the detection part 25 is equivalent to the state formed in the box shape by wall part 25b, 25c, 25d).

  The detection shaft 24a of the main body 24 is inserted into an opening (not shown) opened in the wall 25b and the middle wall 25g of the detection unit 25 of the crop sensors 31 to 34, and the detection unit 25 is connected to the main body 24. Are connected to the detection shaft 24a. By rotating the detection shaft 24a of the main body 24 of the crop sensors 31 to 34, the detection unit 25 is supported so as to be swingable around the axis P5 of the main body 24, and a spring ( The detection unit 25 is biased upward (non-detection state side) by an unillustrated).

  A gap filling member 35 such as a soft rubber plate and a presser plate 36 are provided. A rectangular opening 35a is opened in the gap filling member 35, and a long extension 35b and a short extension 35c are formed on one and the other of the short sides of the opening 35a.

  The presser plate 36 is formed of a metal plate material, and has a rectangular opening 36a. A receiving portion 36b bent in a U-shape is provided, and the receiving portion 36b is connected to the vicinity of the end of the opening 36a.

The gap filling member 35 is abutted against the lower surface of the bottom 10 so that the opening 35 a of the gap filling member 35 is positioned at the opening 10 a of the bottom 10.
The opening 36 a of the presser plate 36 is positioned in the opening 35 a of the gap filling member 35 and the opening 10 a of the bottom 10, and the receiving part 36 b of the presser plate 36 is below the extension part 35 b of the gap filling member 35. The presser plate 36 is abutted against the lower surface of the gap filling member 35 so as to be positioned.

  The holding plate 36 is connected to the bottom portion 10 by bolts 37, and the gap filling member 35 is fixed to the lower surface of the bottom portion 10 by the holding plate 36 so as to be sandwiched between the bottom portion 10 and the holding plate 36. .

  The main body 24 of the crop sensors 31 to 34 is coupled to the lower surface of the presser plate 36 by bolts 37 and the detection unit 25 of the crop sensors 31 to 34 is connected to the opening 36a of the presser plate 36 and the gap filling. It protrudes obliquely upward through the opening 35 a of the member 35 and the opening 10 a of the bottom 10.

The detection of cereal grains by the crop sensors 31 to 34 will be described as follows.
The state shown in FIGS. 12 and 13 is a state in which the cereal is not in contact with the detection unit 25 of the crop sensors 31 to 34, and the crop sensor 31 to 34 is a state in which the cereal is not detected.

  In this state, the upper stopper portion 25e of the detection unit 25 of the crop sensors 31 to 34 is in contact with the edge of the opening 36a of the presser plate 36 from below, and is in contact with the frame body 9 through the presser plate 36. It is. This state is a state in which the detection unit 25 of the crop sensors 31 to 34 is positioned at the upper swing limit and cannot swing further upward.

  In this state, the extension part 35b of the gap filling member 35 contacts the wall part 25d of the detection part 25 of the crop sensors 31 to 34, and the extension part 35c of the gap filling member 35 is detected by the crop sensors 31 to 34. The long side portion of the opening 35 a of the gap filling member 35 is in contact with the walls 25 b and 25 c of the detection unit 25 of the crop sensors 31 to 34.

  Thereby, the clearance gap between the detection part 25 of the crop sensors 31-34 and the opening part 10a of the bottom part 10 is the wall part 25b, 25c, 25d of the detection part 25 of the crop sensors 31-34, and the gap filling member 35. It is in a buried state, and the grain does not leak through the opening 10 a of the bottom 10.

  In the state shown in FIGS. 12 and 13, when the cereals come into contact with the detection units 25 of the crop sensors 31 to 34, the detection units 25 of the crop sensors 31 to 34 are pushed downward by the cereals, and the gap filling member 26. It swings so that it may enter into the opening part 35a of this, and the crop sensors 31-34 will be in the state which detects a grain candy.

When the detection unit 25 of the crop sensors 31 to 34 swings downward, the lower stopper portion 25f of the detection unit 25 of the crop sensors 31 to 34 and the lower sides of the wall portions 25b and 25c are the receiving portions 36b of the presser plate 36. , The detection unit 25 of the crop sensors 31 to 34 reaches the lower swing limit.
This state is a state in which the lower stopper portion 25f of the detection unit 25 of the crop sensors 31 to 34 hits the frame body 9 via the presser plate 36 (receiving portion 36b), and cannot swing further downward. Become.

When the detection unit 25 of the crop sensors 31 to 34 reaches the lower swing limit, the detection unit 25 of the crop sensors 31 to 34 closes the opening 35 a of the gap filling member 35 and the opening 10 a of the bottom 10. It becomes a state, and the upper part 25a of the detection part 25 of the crop sensors 31 to 34 and the upper surface of the bottom part 10 are substantially flush with each other.
Thereby, the flow of cereals is not hindered by the detection unit 25 of the crop sensors 31 to 34, and the grain does not leak through the opening 10 a of the bottom 10.

(Fifth embodiment of the invention)
In the crop sensors 31 to 34 shown in FIG. 4 and (first alternative embodiment of the invention) to (fourth alternative embodiment of the invention), the crop sensors 31 to 34 are arranged as shown in FIG. Also good.

As shown in FIG. 15, two crop sensors 31 and 32 are provided in the cutting unit 4.
At the bottom 10 of the frame body 9, on the front side of the right spiral portion 17b of the horizontal transport body 17 (corresponding to the position on the right side of the harvesting section 4 (harvesting section) with respect to the entrance 3a of the transport section 3), the crop sensor 31 is provided. Is provided.

  At the bottom 10 of the frame body 9, the crop sensor 32 is located on the front side of the left spiral portion 17 c of the horizontal transport body 17 (corresponding to the position on the left side with respect to the inlet portion 3 a of the transport section 3 in the harvesting section 4 (harvesting section)). Is provided.

  As a result, the crop sensors 31 and 32 are provided in the harvesting unit 4 (harvesting unit) with an interval in the left-right direction. In the harvesting unit 4 (harvesting unit), the left and right sides of the inlet 3a of the transport unit 3 are left and right. With the center CL2 as a reference, the right side position and the left side position are arranged, and the frame body 9 is provided in a portion located below the horizontal transport body 17. .

The crop sensor 31 overlaps the rotation trajectory of the right spiral portion 17b of the horizontal transport body 17 in plan view, and the crop sensor 32 overlaps the rotation trajectory of the left spiral portion 17c of the horizontal transport body 17 in plan view.
The crop sensors 31 and 32 are arranged on the front side (outer peripheral side) of the rotation trajectory of the right spiral portion 17b and the left spiral portion 17c of the lateral transport body 17 in a side view, and the right spiral section 17b and the left of the lateral transport body 17 It does not interfere with the spiral portion 17c. The crop sensors 31 and 32 and the scraping portion 17d of the horizontal transport body 17 have different positions in the left-right direction, so that the crop sensors 31 and 32 do not interfere with the scraping portion 17d of the horizontal transport body 17.

  In the crop sensor 31, the axis P5 of the main body 24 of the crop sensor 31 faces in the front-rear direction, and the detection unit 25 of the crop sensor 31 is diagonally left (on the left and right center CL1 side of the cutting unit 4) (inlet part of the transport unit 3). 3a side).

  In the crop sensor 32, the axis P <b> 5 of the main body 24 of the crop sensor 32 faces in the front-rear direction, and the detection unit 25 of the crop sensor 32 is tilted to the right (left and right center CL <b> 1 side of the cutting unit 4) (inlet of the transport unit 3). Part 3a side).

The detection of cereal straw by the crop sensors 31, 32 and the harvested crop sensors 22, 23 will be described.
As shown in FIG. 15, when the space between the right and left dividers 14 is divided into three regions A1, A2, and A3, the crop sensor 31 corresponds to the region A1, and the harvested crop sensors 22 and 23 correspond to the region A2. Correspondingly, the crop sensor 32 corresponds to the area A3.

  When the corn straw is introduced from the region A1, the corn straw is conveyed to the left side by the right spiral portion 17b of the horizontal conveyance body 17, and is supplied to the inlet portion 3a of the conveyance portion 3 by the scraping portion 17d of the horizontal conveyance body 17. That is, the cereal is brought into contact with the crop sensor 31, and the crop sensor 31 detects the cereal.

  When the cereals are introduced from the area A2, the cereals are supplied to the entrance 3a of the transport unit 3 while being transported rearward by the scraping unit 17d of the lateral transport body 17, and the right and left harvesting Crop sensors 22 and 23 detect cereal grains.

  When the corn straw is introduced from the region A3, the corn straw is conveyed to the right side by the left spiral portion 17c of the horizontal conveyance body 17, and is supplied to the inlet portion 3a of the conveyance portion 3 by the scraping portion 17d of the horizontal conveyance body 17. Therefore, the culm comes into contact with the crop sensor 32, and the crop sensor 32 detects the culm.

In the right and left harvested crop sensors 22, 23, when cereals are introduced from the area A 1, the right harvested crop sensor 22 is in a state of detecting cereals, and the left harvested crop sensor 23 detects cereals. State or not detected.
When the culm is introduced from the region A2, at least one of the right and left harvested crop sensors 22, 23 is in a state of detecting the culm.
When the cereal is introduced from the region A3, the right harvested crop sensor 22 is in a state where the cereal is detected or not detected, and the left harvested crop sensor 23 is in a state where the cereal is detected.

The cereal detection pattern by the crop sensors 31, 32 and the harvested crop sensors 22, 23 will be described.
As shown in FIG. 16, the detection patterns B11 to B14 of cereals by the crop sensors 31, 32 and the harvested crop sensors 22, 23, and the cutting width W1 which is the left and right width of the cereals introduced from the field to the cutting unit 4 are as shown in FIG. Become.

  As shown in the detection pattern B11, when the crop sensors 31 and 32 are in the detection state ON and the right and left harvested crop sensors 22 and 23 are in the detection state ON, the cutting width W1 is determined to be in a state over the areas A1, A2, and A3. it can. In this case, when the right or left harvested crop sensors 22 and 23 are in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B12, the crop sensor 31 is in the detection state ON, the crop sensor 32 is in the non-detection state OFF, the right harvested crop sensor 22 is in the detection state ON, and the left harvested crop sensor 23 is in the detection state ON or non-detection state. When turned OFF, the cutting width W1 can be determined to be in a state extending over the regions A1 and A2 or a state in the region A1. In this case, when the right harvested crop sensor 22 is in the non-detection state OFF, it can be determined that an abnormality has occurred.

  As shown in the detection pattern B13, the crop sensor 31 is in the non-detection state OFF, the crop sensor 32 is in the detection state ON, the right harvested crop sensor 22 is in the detection state ON or non-detection state OFF, and the left harvested crop sensor 23 is in the detection state. When turned ON, it can be determined that the cutting width W1 is in a state extending over the regions A2 and A3 or in the region A3. In this case, it can be determined that an abnormality has occurred when the left harvested crop sensor 23 is in the non-detection state OFF.

  As shown in the detection pattern B14, when the crop sensors 31, 32 are in the non-detection state OFF, and the right and left harvested crop sensors 22, 23 are in the detection state ON, the cutting width W1 can be determined as the state of the region A2.

(Sixth embodiment of the invention)
In the above-described (fifth embodiment of the invention), the third crop sensor 33 is provided on the front side of the scraping portion 17d of the horizontal conveyance body 17 (front side of the inlet portion 3a of the conveyance unit 3) shown in FIG. You may provide (refer the crop sensor 33 of FIG. 2).

  According to this structure, in the detection pattern B12 of FIG. 16, when the crop sensor 33 is in the detection state ON, the cutting width W1 can be determined to be in a state extending over the areas A1 and A2. When the crop sensor 33 is in the non-detection state OFF, the cutting width W1 can be determined as the state of the region A1.

  In the detection pattern B13 of FIG. 16, when the crop sensor 33 is in the detection state ON, it can be determined that the cutting width W1 is in a state over the areas A2 and A3. When the crop sensor 33 is in the non-detection state OFF, the cutting width W1 can be determined as the state of the region A3.

(Seventh embodiment of the invention)
You may comprise as follows about the detection of the grain straw of the crop sensors 31-34.
The amount of cereals introduced into the mowing unit 4 changes in each part of the field depending on the growth state in the field, and the amount of cereals sufficient to turn the crop sensors 31 to 34 fully ON. However, it is not necessarily introduced into the cutting unit 4.
Thereby, when harvesting by the harvesting part 4 is performed, the state where the grain straw introduced into the harvesting part 4 contacts the crop sensors 31 to 34 and the state where it does not contact are repeated.

In the above state, as shown in FIG. 17, it is assumed that the detection signals ON1, ON2, ON3, ON4 are repeatedly output from the crop sensors 31 to 34 in the non-detection state OFF.
In this case, even if the detection signals ON2, ON3, ON4 are output or stopped from the crop sensors 31-34 until the set time T elapses from the first detection signal ON1, the crop sensors 31-34 are output. Is determined to be in the detection state ON (see the dotted line in FIG. 17).

  Even if the set time T elapses, if the cutting by the mowing unit 4 is performed, the next detection signal ON1 is immediately output from the crop sensors 31 to 34, so the set time T is set again. It is determined that the crop sensors 31 to 34 are in the detection state ON.

  Thereby, while cutting by the cutting part 4 is performed, in the regions A1 to A4 where the culm is introduced, even if the state where the culm is in contact with the crop sensors 31 to 34 and the state where it is not in contact are repeated, It is determined that the crop sensors 31 to 34 are in the detection state ON.

The set time T may be set to a certain time (for example, 1 second).
The set time T may be changed in conjunction with the traveling speed of the airframe 1.
That is, there is a possibility that cereals exist for a certain distance (for example, 2 m) from the point where the crop sensors 31 to 34 output the detection signal (the possibility that the crop sensors 31 to 34 output the detection signal). Based on the idea that the vehicle body 1 travels a certain distance, it is necessary to change the set time T according to the different travel speeds of the vehicle body 1.

  When the set time T is changed in conjunction with the traveling speed of the airframe 1, a speed sensor (not shown) that detects the traveling speed of the airframe 1 is provided. When the vehicle speed is changed to the short side and the traveling speed of the airframe 1 becomes low, the set time T may be changed to the long side.

In the combine, when the harvesting process is completed along one side of the field and reaches the heel, the reaping part 4 is stopped and lifted from the field, swiveled at the shore, and enters the next reaping process. Repeat the process.

  Thus, the process shown in FIG. 17 is performed in a state in which the mowing unit 4 is mowing, that is, in a state in which a mowing clutch (not shown) that transmits power to the mowing unit 4 is engaged.

  In a state where cutting by the cutting unit 4 is not performed, such as turning at the heel, that is, in a state where the cutting clutch is disengaged, the processing shown in FIG. 17 is not performed and is detected from the crop sensors 31 to 34. When the signals ON1 to ON4 are stopped, it is determined that the crop sensors 31 to 34 are in the non-detection state OFF.

(Eighth Embodiment of the Invention)
The transport unit 3 may be offset and connected to the rear part of the mowing unit 4 so that the left and right center CL2 of the entrance 3a of the transport unit 3 is located slightly to the right of the left and right center CL1 of the mowing unit 4.
According to this structure, the arrangement of the right spiral portion 17b and the left spiral portion 17c, the scraping portion 17d, and the crop sensors 31 to 34 of the horizontal transport body 17 is reversed from the state shown in FIGS. Should be arranged.

  The transport unit 3 is connected to the rear part of the mowing unit 4 so that the left and right center CL2 of the entrance 3a of the transport unit 3 is located at the position of the left and right center CL1 of the mowing unit 4, and the right spiral portion of the horizontal transport body 17 17b and the left spiral portion 17c may have the same length.

  According to this structure, the crop sensors 33 are arranged so as to be positioned at the left and right center CL2 of the inlet portion 3a of the transport unit 3, and the same number of crop sensors are provided in front of the right spiral portion 17b and the left spiral portion 17c of the lateral transport body 17. What is necessary is just to arrange | position 31,32,34 so that it may become left-right symmetric with respect to the left-right center CL1 of the cutting part 4. FIG.

The crop sensors 31 to 34 may be five or more instead of four.
In the frame body 9 of the cutting part 4, the crop sensors 31 to 34 may be provided not on the bottom part 10 but on the rear side part 12. In this case, crop sensors 31 to 34 may be provided in a lower portion (corresponding to a portion located below the horizontal conveyance body in the frame body) of the rear side portion 12 than the axis P2 of the horizontal conveyance body 17. .

  When the crop sensors 31 to 34 are provided on the rear side portion 12, instead of the detection units 25 of the crop sensors 31 to 34, a pressure receiving surface by a rubber body or the like is provided, and the pressure applied to the pressure receiving surface is increased when the cereals hit the pressure receiving surface. The crop may be detected by the above.

The right and left harvested crop sensors 22 and 23 are not provided on the right side and left side of the entrance 3a of the transport unit 3, but one is provided on the bottom 18a of the support case 18 at the entrance 3a of the transport unit 3. Of harvested crop sensors (not shown). Accordingly, it is possible to determine that an abnormality has occurred in the crop sensors 31, 32, 33, and 34 using one harvested crop sensor.
In this case, in the bottom portion 18a of the support case 18, a harvested crop sensor (not shown) may be provided at the position of the left and right center CL2 of the entrance 3a of the transport unit 3, and the left and right center of the entrance 3a of the transport unit 3 is provided. A harvested crop sensor (not shown) may be provided at a position slightly to the right or left of CL2.

  The upper stopper portion 25e and the lower stopper portion 25f of the above-described crop sensor 31 to 34 (the fourth embodiment of the invention) are the same as those shown in FIG. 4 and (the first embodiment of the invention) to (the first embodiment of the invention). (3 different forms) of crop sensors 31 to 34 may be provided.

  The present invention can be applied not only to ordinary rice combine harvesters, but also to harvesters such as self-removal combine harvesters, corn harvesters, sugarcane harvesters, and cotton harvesters.

DESCRIPTION OF SYMBOLS 1 Airframe 3 Conveyance part 3a Inlet part 4 Cutting part (harvest part)
DESCRIPTION OF SYMBOLS 9 Frame body 10 Bottom part 10a Opening part 17 Horizontal conveyance body 25 Detection part 25b, 25c, 25d Wall part 25e Upper stopper part 25f Lower stopper part 26, 29, 30, 35 Crevice filling member 31, 32, 33, 34 Crop sensor CL2 Left and right center P2 shaft core P5 shaft core

Claims (14)

A harvesting section provided at the front of the aircraft to harvest crops in the field;
A harvester provided with a plurality of crop sensors arranged in the harvesting section at intervals in the left-right direction and detecting the presence of a crop in contact with the crop. A transport unit for transporting the crop from the harvesting unit to the machine body is connected to the rear part of the harvesting unit,
In the harvesting part,
A horizontal transport body that is rotationally driven around the axis in the left-right direction so as to transport the crop along the left-right direction of the harvesting section, toward the entrance of the transport section;
A frame body that rotatably supports the horizontal transport body and to which the transport section is coupled;
The harvester according to claim 1, wherein the crop sensor is provided in the frame body.   The harvesting machine according to claim 2, wherein the crop sensor is provided in a portion of the frame body that is located below the horizontal transport body.   The harvester according to claim 2 or 3, wherein the crop sensor is provided at a bottom of the frame body.   The harvesting machine according to any one of claims 2 to 4, wherein the crop sensor is disposed at a position on an outer peripheral side of a rotation locus of the horizontal conveyance body. An opening is formed in the frame body;
The crop according to any one of claims 2 to 5, wherein the detection unit of the crop sensor is provided in a state of protruding from the opening and is configured to swing in contact with the crop. Machine.   The harvester according to claim 6, further comprising a gap filling member that fills a gap between the detection unit and the opening.   A wall portion extending downward is provided on an outer peripheral portion of a portion protruding from the opening portion in the detection portion, and a portion protruding from the opening portion in the detection portion is formed in a box shape by the wall portion. The harvester according to claim 6 or 7.   An upper stopper portion that determines the upper swing limit of the detection portion by hitting the frame body and the lower stopper portion that determines the lower swing limit of the detection portion by hitting the frame body. The harvester according to any one of claims 6 to 8, which is provided. A transport unit for transporting the crop from the harvesting unit to the machine body is connected to the rear part of the harvesting unit,
10. The crop sensor according to claim 1, wherein the crop sensor is arranged in a right side position and a left side position with reference to the left and right center of the entrance portion of the transport unit in the harvesting unit. Harvester as described in.   The said crop sensor is provided in the said harvesting part in the position of the right side with respect to the said inlet part, the position of the left side with respect to the said inlet part, and the position of the front side of the said inlet part. Harvesting machine.   The crop sensor provided on the front side of the entrance in the harvesting unit is provided on the front side of the crop sensor provided on the right side and the left side of the entrance in the harvesting unit. The harvester according to claim 11.   The crop sensor provided at a right side position and a left side position with respect to the inlet part in the harvesting part is provided with a detection part that contacts a crop and swings around a longitudinal axis. Item 11. A harvester according to Item 11 or 12.   The said crop sensor provided in the front side of the said entrance part in the said harvest part is provided with the detection part which contacts a crop and rock | fluctuates around the axial center of the left-right direction. The harvester according to one item.

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