JP2012152194A - Reaping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping device having high condition adaptability at reaping by having a high pick-up performance in any case of a wide range of cutting conditions.SOLUTION: The reaping device has a structure provided with an operation means (34) which changes the track of a tip of a pick-up lag (17) between a first track which is a circular arc in a lower part of a pick-up case (12) and a second track wider than the first track in the lower part of the pick-up case (12).

Description

  The present invention relates to a cutting device having high condition adaptability at the time of cutting.

  The combine is provided with a threshing device on the left and right sides of a machine base equipped with a traveling device, a grain storage device is provided on the side of the threshing device, a control unit is provided on the front side of the grain storage device, and planted at the front end A cutting body for weeding cereals, a cutting device for raising cereals on the rear side of the weeding body on the front side of the control unit and threshing device, and a cutting blade for cutting cereals on the rear side of the cutting device and after cutting There are some which are provided with a transport device that transports the cereal cereal to the rear junction, but in particular, the harvesting device has a drive sprocket that is coaxial with the output shaft at the upper part of the pulling case that becomes the outer frame of the pulling device that causes crops. The lower ring body is pivotally supported at the lower part of the pulling case, and a chain having a large number of pulling lugs is wound between the drive sprocket and the lower ring body.

  Various conditions such as fields and stocks for harvesting cereals can be considered. For example, it is possible not only to work in a field where stocks are easily lost or to harvest crops that are easy to cut, but also to cases where the stock is completely lying down. For this reason, the harvesting device corresponding to the already-cut ground side has a structure in which two lower rings are provided, and the harvesting device of the combine that improves the raising performance by widening the width of the locus of the raising lug of the raising device is disclosed in Patent Document 1. Is disclosed.

JP 2003-47318 A

  However, as described in Patent Document 1, with the pulling device that has been raised and improved in performance by expanding the width of the pulling lug trajectory, when working in a field that is likely to lose stock or harvesting crops that are likely to break It had the disadvantage of not being able to fully adapt. For this reason, none of the combine harvesting devices according to the prior art including the one described in Patent Document 1 has a high pulling performance under any of a wide range of harvesting conditions.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a reaping device having a high condition adaptability at the time of reaping by having a high pulling performance in any of a wide range of reaping conditions.

The present invention that has solved the above problems is as follows.
The invention according to claim 1 includes a pulling device (70) for raising the pulling lug (17) in the ascending stroke of the pulling lug (17) from the lower part of the pulling case (12),
A first track having a circular arc at the tip of the pulling lug (17) at the lower portion of the pulling case (12), and a locus of the tip of the pulling lug (17) at the pulling case (from the first track). 12) A cutting device characterized in that operating means (34) for switching to a wide second track is provided at the lower part of 12).

  The invention according to claim 2 is configured such that the second track is formed by forming a part of the tip locus of the pulling lug (17) in the lower part of the pulling case (12) in a straight line in the horizontal direction. The reaping device according to claim 1.

The invention according to claim 3 is provided with a drive sprocket (14), a fixed side ring (18), and a movable side ring (20) in the pulling case (12),
The chain (16) having the pulling lug (17) is wound around the drive sprocket (14), the fixed side ring (18) and the movable side ring (20),
The operation means (34) is connected to the movable side wheel body (20), and the movable side wheel body (20) is moved up and down by the operation means (34) to switch between the first track and the second track. The reaping device according to claim 1, wherein the reaping device is configured to perform.

According to a fourth aspect of the present invention, the base end portion of the lower arm (22) having the movable side ring body (20) on the tip side is rotatably attached to the support shaft of the fixed side ring body (18). And
The reaping device according to claim 3, wherein a tip end side of the lower arm (22) swings in a vertical direction by a switching operation of the operation means (34).

  The invention according to claim 5 is the reaping device according to claim 4, characterized in that an erecting guide (22A) for erecting the pulling lug (17) in the ascending stroke is provided in the lower arm (22). is there.

  The invention according to claim 6 is characterized in that the operating means (34) is activated according to the speed change operation position of the travel speed change lever (8). Device.

In the invention according to claim 7, the one end side of the operating means (34) and the tip of the lower arm (22) are connected by a connecting arm (24),
On the other end side of the operation means (34), a tension spring (38) for urging the operation means (34) in one direction, and the operation means (38) against the urging force of the tension spring (38). The reaping device according to any one of claims 4 to 6, further comprising a switching wire (36) for performing the switching operation of (34).

In the invention according to claim 8, the base end portion of the tension arm (28) having the tension sprocket (26) on the tip side is rotatably attached to the support shaft of the drive sprocket (14),
The reaping device according to claim 7, wherein the tension sprocket (26) is supported by the connecting arm (24) via a compression spring (29) so as to be extendable and contractible.

  According to the first aspect of the present invention, the operating means (34) causes the lower end of the elevating case (12) to have a first trajectory in which the trajectory of the leading end of the elevating lug (17) has an arc shape, and the elevating lug (17 ) Is switched from the first track to the second track that is wider at the lower portion of the pulling case (12) than the first track, so that the horizontal track of the tip of the rising lug (17) in the standing state is It becomes longer than the first orbit.

  For this reason, when reaping the lying grain straw, the locus of the tip of the pulling lug (17) is set as the second track, so that the width of the pulling lug (17) is widened and the pulling performance is improved. improves.

  On the other hand, when working in a field that is likely to lose stock or harvesting crops that are prone to cutting, the trajectory of the tip of the lug (17) is the first track, and the trajectory of the lug (17) in the lower part is a normal circle. By making it a locus, it becomes difficult to come out of stocks and cuts and cuts can be carried out smoothly. As a result of the above, according to the present invention, the condition adaptability of the reaping device is improved.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the width of the tip portion locus of the pulling lug (17) in the lower portion of the pulling case (12) is linearly expanded in the second track. As a result, the trajectory of the pulling lug (17) of the second track is expanded in the horizontal direction while keeping the vertical direction constant, and the pulling performance is further improved.

  According to the invention described in claim 3, in addition to the effects of the invention described in claims 1 and 2, the movable side wheel body (20) is surely moved up and down, so that the condition adaptability of the reaping device is further improved. To do.

  According to the fourth aspect of the invention, in addition to the effect of the third aspect of the invention, the lower arm (22) is swung in the vertical direction by the switching operation of the operating means (34). The movable side ring body (20) at the front end side of (22) moves up and down, and the movable side ring body (20) is smoothly switched between the first track and the second track at the lower part of the pulling case (12). .

  According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the invention, the erecting guide (22A) for erecting the elevating lug (17) is provided on the lower arm (22). 12) The raising lug (17) that has fallen down in the inside of the raising case (12) surely stands up. As a result, the pulling performance at the time of complete lodging is improved, and it is possible to reliably perform the work in the field where the stocks are easily removed or the crop that is easily cut off.

  According to the invention described in claim 6, in addition to the effects of the invention described in claims 1 to 5, the operating means (34) is operated in accordance with the speed change operation position of the travel speed change lever (8). The trajectory of the tip of the pulling lug (17) can be switched in conjunction with the traveling speed change operation according to the field conditions such as the lying state, and the operability is improved.

  According to the invention described in claim 7, in addition to the effects of the inventions described in claims 4 to 6, the position of the movable side wheel body (20) can be switched reliably by the operating means (34) via the connecting arm (24). In addition, the operation means (34) is reliably returned to the original position by the tension spring (38) as the operation of the operation means (34) by the switching wire (36) is completed. Improves.

  According to the invention described in claim 8, in addition to the effect of the invention described in claim 7, the tension sprocket (26) is biased toward the outer peripheral side of the chain (16). As a result, the power is well transmitted from the drive sprocket (14) to the chain (16).

It is a side view near the front side of the combine which concerns on 1st Embodiment. It is a top view near the front side of the combine which concerns on 1st Embodiment. It is a front view of the combine which concerns on 1st Embodiment. It is a front view showing the structure in a pulling apparatus, Comprising: It is a figure which shows a 2nd track | orbit. It is a front view showing the structure in a pulling apparatus, Comprising: It is a figure which shows a 1st track | orbit. It is a principal part cross-sectional view of a pulling apparatus. It is a disassembled perspective view showing the periphery of a connection arm. It is principal part front sectional drawing of the combine which concerns on 1st Embodiment. It is a top view near the front side of the combine which concerns on 2nd Embodiment. It is a front view of the combine which concerns on 2nd Embodiment. It is a side view near the front side of the combine which concerns on 2nd Embodiment. It is a side view near the front side of the combine which concerns on 2nd Embodiment. It is a top side view of the cutting device which concerns on 2nd Embodiment, (A) is the time of non-use of a visor, (B) is the time of use of a visor. It is a top side view of the cutting device which concerns on 3rd Embodiment, (A) is the state in which the horizontal cover has fallen, (B) is the state in which the horizontal cover was raised.

  An embodiment of the present invention will be described by exemplifying a 4-cut combine. Hereinafter, the right hand side as viewed from the pilot seated in the control section is `` right side '', the left hand side is `` left side '', the upper side is `` upward '', the lower side is `` downward '', and the combine traveling direction is `` front side '', The backward direction is called “rear side”.

<First Embodiment>
1 to 8 show a first embodiment of the present invention. As shown in FIG. 1, the rear end portion of the rear frame 2 extending downward is attached to the front side of the machine base of the combine 1. Thereafter, the middle part of the frame 2 is supported by a hydraulic cylinder 3 projecting from the machine base so as to extend and contract. The front end portion of the rear frame 2 is connected to the lower end side of four pulling transmission cylinders 5 (only one is shown in FIG. 1) that respectively extend upward from the front side via the transmission shaft case 4.

  These pulling transmission cylinders 5 are bent in the middle, and the upper ends are connected to the upper portions of the pulling devices 70 and 80 provided in the reaping device. However, in the combine 1 of this embodiment, the 1st pulling apparatus 70 is arrange | positioned at the left end side and the right end side as shown in FIG. 2, and the 2nd pulling apparatus 80 is arrange | positioned in the center part. Further, a pulling transmission shaft 6 is disposed inside the rear frame 2, the transmission shaft case 4, and the pulling transmission cylinder 5, and a drive sprocket 14 is pivotally supported on the upper end side of each of the pulling devices 70 and 80. The drive transmission shaft 6 is connected to the drive sprocket 14 via a bevel gear (not shown).

  Accordingly, power from an engine (not shown), which is a driving source, is transmitted from the rear frame 2 side into the transmission shaft case 4 and then branched into the pulling transmission cylinders 5, and bevel gears are applied to the driving sprockets 14 of the pulling devices 70 and 80. Each drive sprocket 14 is rotated by the power from the engine.

  A weeding body 92 is attached to the lower part of the pulling devices 70 and 80 shown in FIG. 1 via a weeding pipe 91 extending from the transmission shaft case 4. As shown in FIGS. 2 and 3, the weeding body 92 is at the left end. The left lower portion of the first pulling device 70 on the side, the lower portion between the two second pulling devices 80 in the center, and the lower right portion of the first pulling device 70 on the right end side, respectively. Moreover, the conveying apparatus 10 which conveys the cutting blade which cuts a grain cocoon to the rear side of the raising apparatuses 70 and 80, and the grain culm after cutting to a back junction part is provided.

  On the other hand, the pulling case 12 forms the outer frame of each pulling device 70, 80 provided in the reaping device, and the first pulling device 70 on the left end side and the first pulling device 70 on the right end side are symmetrically structured. However, the first pulling device 70 on the left end side will be described below as an example.

  First, the pulling case 12 of the first pulling device 70 includes a front half 12A located on the front side and a rear half 12B located on the rear side as shown in FIG. A drive sprocket 14 connected to the engine is specifically pivotally supported at a location near the upper part in the pulling case 12, and a fixed side ring body is located at a position near the lower portion of the pulling case 12 that is directly below the drive sprocket 14. 18 is pivotally supported. Further, a lower arm 22 is supported so as to be rotatable around a support shaft 18A of the fixed side ring body 18, and is movable to a position on the right side of the fixed side ring body 18 in FIG. A support shaft 20A of the side wheel body 20 is pivotally supported.

  Further, as shown in FIGS. 4 to 6, on the back surface of the rear half 12 </ b> B of the pulling case 12, an elongated connection arm 24 formed of a plate material is slidably disposed. The support shaft 20A of the movable side wheel body 20 is also pivotally supported at a position closer to the lower side of the connecting arm 24, and is supported on the support shaft 26A of the tension sprocket 26 at a position closer to the upper side of the connecting arm 24. . However, the tension arm 28 is supported so as to be rotatable around the support shaft 14A of the drive sprocket 14, and the support shaft 26A of the tension sprocket 26 is also pivotally supported at a position on the tip side of the tension arm 28.

  Specifically, as shown in FIG. 7, a support bar 24A extends upward from the upper end of the connecting arm 24, and the compression spring 29, which is a coil spring, the bracket portion 26B of the tension sprocket 26, and the ring member 30 support this support rod 24A. The rod 24A is inserted. Then, the pin 31 is locked in the hole 25 formed in the upper part of the support bar 24A, so that these members are supported by the support bar 24A.

  Therefore, the compression spring 29 is disposed between the bracket portion 26B of the tension sprocket 26 and the lower end portion of the support rod 24A, and the tension sprocket 26 is always urged upward by the compression spring 29 while being connected. Supported by the arm 24. Therefore, in this embodiment, the tension sprocket 26 is urged toward the outer peripheral side of the chain 16.

  As described above, in this embodiment, the lower arm 22, the connecting arm 24, the tension arm 28, and the like, and the rotating members such as the driving sprocket 14, the tension sprocket 26, the movable side wheel body 20, and the fixed side wheel body 18 are used. The link mechanism is configured.

  Further, as shown in FIGS. 4 to 6, a chain 16 is continuously wound around the drive sprocket 14, the fixed side wheel body 18, the movable side wheel body 20, and the tension sprocket 26. The rear case 12A is located between the front half 12A and the rear half 12B. For this reason, as the drive sprocket 14 is driven and rotated by power transmission from an engine (not shown), the chain 16 is rotated while being guided by the fixed side wheel body 18, the movable side wheel body 20, and the tension sprocket 26. At this time, since the tension sprocket 26 is urged toward the outer peripheral side of the chain 16 by the compression spring 29, the chain 16 is not loosened. As a result, power is reliably transmitted from the drive sprocket 14 to the chain 16.

  Further, a plurality of raising lugs 17 for raising the crop K shown in FIG. 2 are attached to the outer peripheral side of the chain 16 at equal intervals. Therefore, as the drive sprocket 14 rotates, the chain 16 rotates while being guided by the fixed side wheel body 18 and the movable side wheel body 20, so that the plurality of pulling lugs 17 rotate around the pulling case 12. To do.

  A protruding portion 17B that protrudes in a direction perpendicular to the plane of FIG. 4 and FIG. 5 is provided on the proximal end side of the pulling lug 17, and the protruding portion 17B is in the direction in which the pulling lug 17 extends. It is formed long in a substantially vertical direction. A fulcrum 17A that is rotatably connected to the chain 16 is provided in the protrusion 17B of the pull-up lug 17, and the pull-up lugs 17 can be rotated and folded around the fulcrum 17A.

  On the other hand, a groove portion (not shown) is formed in the portion corresponding to the ascending stroke of the front half 12A and the rear half 12B, and the protruding portion 17B of the pulling lug 17 is fitted into this groove portion, and the pulling lug 17 is raised. State is maintained. In addition, an upright guide 22A that abuts the protruding portion 17B and raises the pull-up lug 17 is provided on the lower side of the lower arm 22 in FIG. 4, and the fixed-side wheel 18 and the movable body 18 are movable as shown in FIGS. It is possible to maintain a state in which the protrusion 17B comes into contact with the outer peripheral surface of the side wheel body 20 and the pulling lug 17 is raised.

  Therefore, the pulling lug 17 is erected from the lower part of the pulling case 12 during the upward stroke, and the pulling lug 17 is laid down from the upper part of the pulling case 12 so that necessary ones of the pulling lugs 17 are raised. Projects from the inside to the outside.

  On the other hand, the connecting arm 24 is connected to a switching mechanism for rotating the lower arm 22. Specifically, as shown in FIGS. 4 to 6, one end of the switching arm 34 is rotatably attached to the middle in the longitudinal direction of the connecting arm 24, and the middle of the switching arm 34 rotates to the rear half 12 </ b> B. The fulcrum 34A is movably supported. One end of a switching wire 36 protruding from the tube 35 is connected to the other end of the switching arm 34, and the other end of the switching wire 36 is pulled by driving a motor (not shown). The lower end of a tension spring 38, which is a coil spring, is attached to the other end of the switching arm 34, and this switching arm 34 is constantly urged in the clockwise direction in FIGS.

  Along with this, a motor (not shown) is driven by an operation by the operator on the control unit 7, whereby the switching wire 36 is pulled by the motor and the above switching mechanism is activated. For this reason, the switching arm 34 performs a switching operation against the urging force of the tension spring 38 and rotates around the fulcrum 34A, so that the connecting arm 24 moves up and down to move the distal end side and the movable side of the lower arm 22. The ring body 20 swings in the vertical direction. As a result, the lowered position of the movable ring 20 shown in FIG. 4 and the raised position of the movable ring 20 shown in FIG. 5 are taken.

  As the movable side wheel body 20 moves up and down between the lowered position and the raised position, the tension arm 28 moves in accordance with the movement of the connecting arm 24 that is slidable with respect to the pulling case 12. The tension sprocket 26 pivotally supported by the connecting arm 24 moves while rotating. Along with this, the tension sprocket 26 is moved to the optimum position by the compression spring 29 urged upward from the lower portion, whereby the tension of the chain 16 is appropriately maintained.

  As described above, the tip end side of the lower arm 22 swings in the vertical direction by the switching operation of the switching arm 34 as the operating means, but the movable side wheel body 20 arranged adjacent to the fixed side wheel body 18 is shown in FIG. When the vehicle is in the ascending position shown in FIG. 2, a first track having a circular arc at the tip of the pulling lug 17 at the lower portion of the pulling case 12 is taken. On the other hand, when the movable side wheel body 20 is positioned at the lowered position shown in FIG. 4 when necessary, a part of the locus of the leading end of the pulling lug 17 in the lower part of the pulling case 12 is laterally (horizontal). A second trajectory having a straight line shape is taken. Accordingly, in the second track, the pulling lug 17 is rotated so as to be wider than the first track by an inter-axis distance S between the fixed-side ring body 18 and the movable-side ring body 20.

  Therefore, in the case of a harvesting operation in a field such as a wet field where crops are easily removed or a harvesting operation of crops that are easily cut off, the first trajectory is a normal circular locus lag action similar to the conventional technique. On the other hand, in the case of complete lodging, the movable side wheel body 20 is lowered to form the second track, and the width of the locus at the lowermost part of the pulling lug 17 is widened to increase the working area and improve the pulling performance. I tried to make it.

  As a result, in the harvesting device of the combine 1 of the present embodiment, the lowermost lag action area in the raising case 12 can be changed according to the crop state or the field state, and the first raising device 70 is selectively used. Condition adaptability is improved.

  On the other hand, in the combine 1 of the present embodiment, the trajectory of the tip of the pulling lug 17 can be switched between the first track and the second track with respect to the left and right first pulling devices 70 of the four pulling devices 70 and 80. However, with respect to the two second pulling devices 80 at the center shown in FIG. 8, the movable side wheel body 20 and the switching mechanism are not provided, and the chain 16 continues to the drive sprocket 14, the fixed side wheel body 18, and the tension sprocket 26. It has a normal structure that is wound around.

  In addition, in the four-row combine combine 1 that is a multi-row cut as in this embodiment, the two first pulling devices 70 located on the outer side have the movable side ring body 20 between the lowered position and the raised position. By providing a switching arm 34 for switching the position via the vertical movement of the connecting arm 24 and a motor (not shown), the switching arm 34 can be switched simultaneously by the driving force of each motor as the plurality of motors rotate simultaneously. It is also good.

  Then, in order to switch the traveling speed of the combine 1, the auxiliary transmission lever 8 which is a traveling transmission lever installed in the control unit 7 is shifted to a low speed side suitable for the harvesting operation of the fallen cereal, and the auxiliary transmission lever 8 When the changeover switch (not shown) provided at the base of the motor is turned on so that the motor is driven and rotated, the switching arm 34 is moved by the motor, the switching wire 36 or the like in conjunction with the switching speed. By switching operation, it is possible to simultaneously switch to sub-shifting, lodging / low speed, etc.

  As described above, the operation switching can be interlocked with the switching of the traveling speed of the combine 1 by remote operation, and the operability can be further improved. Further, in the two-row combine, only the first pulling device on the right side may be provided with the movable side wheel body 20, the connecting arm 24, the switching arm 34, etc., so that it can be handled manually from the operation unit. .

Second Embodiment
9 to 13 show a second embodiment of the present invention. As shown in FIG. 9, a connecting frame 42 that connects the upper portions of the pulling devices 70, 80 exists above the pulling devices 70, 80 of this embodiment, and the base end side of the transparent visor 44 rotates. The connecting frame 42 is movably attached to the distal end side. For this reason, the visor 44 can be stored under the connecting frame 42 in the non-operating state shown in FIG. 13A and is in use as shown in FIG. 13B. It is also possible to project in the horizontal direction forward from the connecting frame 42 in the operating state.

  As shown in FIGS. 9 to 11, this visor when the grain scattering detection sensor 46 including a contact sensor or an infrared sensor for detecting grains of rice or the like spreads the visor 44 forward from the connecting frame 42. Two are arranged above 44. For this reason, as the water droplets, the amount of grains, and the grains G of rice, etc. splashed from the tip caused during the cutting operation come into contact with the visor 44, the state of these grains G is detected by the grain scattering detection sensor 46. Sense and detect.

  On the other hand, a controller (not shown) for controlling the operation of the engine is connected not only to the engine but also to the particle scattering sensor 46. For this reason, the combine 1 of this embodiment is made into a structure in which the controller controls the engine speed in multiple stages based on the detection signal from the particle scattering sensor 46. This controller is also connected to the monitor 50 shown in FIG. 9 disposed in the driver's seat of the combine 1, and the state detected by the particle scattering sensor 46 can be displayed on the monitor 50.

  Further, as shown in FIG. 10, a switching device 52 is mounted on the pulling case 12 so as to be able to store a thing close to the upper part of the rising lug 17 during the rising stroke in the pulling case 12, and the action of the rising lug 17 during the rising stroke. Although the switching device 52 can change the height (standing range), the switching device 52 is also connected to the controller.

  As described above, in this embodiment, when the amount of scattered particles increases during the cutting operation and the particle scattering detection sensor 46 detects this, the level of the particles G that are scattered and come into contact with the particle scattering detection sensor 46. In response, the controller changes the engine speed. Along with this, the traveling speed of the combine 1 and the rotational speed of the pulling lug 17 are adjusted to automatically change the pulling speed of the crop.

  Then, the switching device 52 is automatically accommodated in the raising case 12 in accordance with an instruction from the controller to change the working height of the standing lugs 17 in the upward stroke. You can also. However, the change in the working height of the standing lugs 17 and the change in the engine speed may be executed together. Furthermore, unlike the above, the grain level is displayed on the monitor 50, so that the rider can change the rotation speed of the standing lug 17 to correct the crop raising speed to an appropriate speed.

  On the other hand, the water droplets, the amount of grains, and the state of rice scattered from the tip of the cutting operation are sensed by the grain scattering sensor 46, and the scattering information such as the amount of rice scattering is stored in the IQ accelerator 54 ( A controller may be connected to the IQ accelerator 54 so as to correspond to (shown in FIG. 12). As a result of such a structure, it is possible to prevent head loss and threshing loss and improve work comfort by feeding back to an optimal work adaptation state and correcting it to an appropriate engine speed. As described above, the combine 1 of the present embodiment in which the controller is connected to the IQ accelerator 54 can also increase the yield and decrease the head loss.

Next, the installation of the particle scattering sensor 46 on the visor 44 will be specifically described.
As shown in FIG. 13, the bracket 60 is installed so as to extend upward from the pulling devices 70 and 80, and the connection frame 42 is attached to the upper end portion of the bracket 60. As described above, the base end portion of the visor 44 is rotatably supported on the distal end side of the connecting frame 42, and the particle scattering detection sensor 46 is installed on the visor 44. The particle scattering detection sensor 46 is shown in FIG. ) And the non-operating state shown in FIG. 13A in which the visor 44 is rotated and stored.

  However, the switch 46 </ b> A is disposed on the back side of the particle scattering sensor 46, and the contact tool 61 is attached in the vicinity of the rotation support portion 62 that is the hinge of the visor 44 correspondingly. Accordingly, in the state where the visor 44 shown in FIG. 13A is housed in the connecting frame 42, the switch 46A is turned off, and the particle scattering detection sensor 46 becomes inoperable and cannot be used. In the state where the connection frame 42 shown in (B) is raised, the switch 46A is turned on, and the particle scattering sensor 46 can be used.

  Accordingly, when the visor 44 is housed, the controller makes the particle scattering detection sensor 46 inoperative, and only when the visor 44 is used, the controller is combined in this operating state as an operation state in which the particle scattering detection sensor 46 operates. 1 is adjusted, or the detection result is displayed on the monitor 50. As described above, by operating the particle scattering detection sensor 46 only when the visor 44 is used, not only can the power consumption be saved, but also malfunction of the particle scattering detection sensor 46 can be prevented.

<Third Embodiment>
FIG. 14 shows a third embodiment of the present invention. Although this embodiment has a structure substantially similar to that of the second embodiment, the particle scattering detection sensor 46 is not installed in the visor 44. However, in the present embodiment, as shown in FIG. 14, the rotation support portion 63 in which the base end portion of the lateral cover 43 and the base end portion of the connection frame 42 that are respectively located at both ends of the connection frame 42 are hinges. The particle scattering detection sensor 46 is installed on the upper side of the lateral cover 43.

  As a result, the horizontal cover 43 is tilted and the non-use state shown in FIG. 14A and the use shown in FIG. The state can be taken. A contact tool 64 is attached in the vicinity of the rotation support portion 63 of the lateral cover 43 in correspondence with the switch 46 </ b> A disposed on the back side of the particle scattering detection sensor 46.

  Therefore, in the non-use state in which the lateral cover 43 shown in FIG. 14A is tilted, the switch 46A is turned off and the particle scattering sensor 46 cannot be used. When the horizontal cover 43 shown in FIG. 4 is raised, the switch 46A is turned on, and the particle scattering sensor 46 can be used.

  Along with this, when the horizontal cover 43 is tilted, the controller makes the particle scattering detection sensor 46 inoperative, and the particle scattering detection sensor 46 operates only when the horizontal cover 43 is raised. As a state, the controller adjusts the operation of the combine 1 in this operating state, or the detection result is displayed on the monitor 50.

  As described above, by providing the particle scattering detection sensor 46 on the lateral cover 43 as in the present embodiment, it is possible to detect the particles in the vicinity of the lateral cover 43 and to expand the detection range of the particles by the sensor. . In addition, by operating the particle scattering detection sensor 46 only when the lateral cover 43 is used, not only can the power consumption be saved, but also malfunction of the particle scattering detection sensor 46 can be prevented.

  Furthermore, in the third embodiment of the present invention, the particle scattering detection sensor 46 is provided only on the lateral cover 43, but at the same time, the particle scattering detection sensor 46 may be provided on the visor 44 as well. With such a structure, it is possible to detect grains in a wider range, and more appropriately increase the yield and decrease the head loss.

  The present invention can be used for a harvesting device for a combination of two to seven mowing combine.

1 Combine 8 Sub gear lever (travel gear lever)
12 Pulling case 14 Drive sprocket 16 Chain 17 Pulling lug 18 Fixed side wheel body 20 Moving side wheel body 22 Lower arm 22A Standing guide 24 Connecting arm 26 Tension sprocket 28 Tension arm 29 Compression spring 34 Switching arm (operation means)
36 switching wire 38 tension spring 70 first pulling device

Claims (8)

A pulling device (70) for raising the pulling lug (17) in the upward stroke of the pulling lug (17) from the lower part of the pulling case (12);
A first track having a circular arc at the tip of the pulling lug (17) at the lower portion of the pulling case (12), and a locus of the tip of the pulling lug (17) at the pulling case (from the first track). 12) A cutting device characterized in that operating means (34) for switching to a wide second track is provided at the lower part of 12).   2. The second track is formed by forming a part of a tip portion locus of the pulling lug (17) in the lower part of the pulling case (12) into a horizontal straight line. The reaping device described. The pulling case (12) is provided with a drive sprocket (14), a fixed side ring (18), and a movable side ring (20),
The chain (16) having the pulling lug (17) is wound around the drive sprocket (14), the fixed side ring (18) and the movable side ring (20),
The operation means (34) is connected to the movable side wheel body (20), and the movable side wheel body (20) is moved up and down by the operation means (34) to switch between the first track and the second track. The reaping device according to claim 1, wherein the reaping device is configured to perform. The base end portion of the lower arm (22) having the movable side ring body (20) on the distal end side is rotatably attached to the support shaft of the fixed side ring body (18),
The reaping device according to claim 3, wherein the tip end side of the lower arm (22) swings in the vertical direction by the switching operation of the operating means (34).   The cutting device according to claim 4, wherein a standing guide (22A) for raising the pulling lug (17) in the ascending stroke is provided on the lower arm (22).   The reaping device according to any one of claims 1 to 5, wherein the operating means (34) is configured to operate in accordance with a speed change operation position of the travel speed change lever (8). The one end side of the operating means (34) and the tip of the lower arm (22) are connected by a connecting arm (24),
On the other end side of the operation means (34), a tension spring (38) for urging the operation means (34) in one direction, and the operation means (38) against the urging force of the tension spring (38). The cutting device according to any one of claims 4 to 6, further comprising a switching wire (36) for performing the switching operation of (34). A proximal end portion of a tension arm (28) having a tension sprocket (26) on the distal end side is rotatably attached to a support shaft of the drive sprocket (14),
The reaping device according to claim 7, characterized in that the tension sprocket (26) is supported by the connection arm (24) via a compression spring (29) so as to extend and contract.

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