JP6917877B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a threshing device for threshing cut grain culms, a grain tank for storing the threshed grains, and a transport device for transporting the threshed grains and discharging them into the grain tank.

Conventionally, the transport device provided in this type of combine is provided inside the grain tank by rotating the blades provided at the tip of the screw conveyor extending in the lateral direction around the horizontal axis. Those configured to discharge threshed grains from the discharge port to the rear side inside the grain tank (see, for example, Patent Document 1), or blades provided at the tip of a screw conveyor extending in the vertical direction. It is known that a threshing grain is discharged from a discharge port provided inside a grain tank to a region in front of the discharge port by rotation of the portion around a vertical axis (for example,). See Patent Document 2).

Japanese Unexamined Patent Publication No. 2017-046641 (see FIG. 11) Japanese Unexamined Patent Publication No. 2014-068562 (see FIG. 4)

In the case of the above-mentioned configuration in which the threshed grains are discharged to the rear side inside the grain tank by the rotation of the blade portion around the horizontal axis, at least a part of the discharged threshed grains hits the top plate of the grain tank, so that the grains are discharged. It becomes difficult to be thrown to the rear side inside the grain tank, and as a result, the threshed grains may be biased in the front-rear direction inside the grain tank.

Further, in the case of the configuration in which the threshed grains are discharged to the front region of the discharge port by the rotation of the blade portion around the vertical axis, the amount of thrown into the regions on both the left and right sides of the discharge port is relatively larger than that in the front region of the discharge port. However, it may decrease. That is, when the discharge port is provided in the middle portion in the front-rear direction of the side wall of the grain tank on the threshing device side, the amount of thrown to the front side and the rear side inside the grain tank may be relatively small. In this case as well, as a result, the threshing grains may be biased inside the grain tank.

In particular, when a transport grain measuring device that detects the load corresponding to the amount of threshed grains and measures the transport yield of the threshed grains is installed near the discharge port, the threshed grains are guided to the transport grain measuring device. In this state, the threshing grains are more likely to be thrown into the top plate of the grain tank or the front region of the discharge port, so that the above-mentioned bias of the threshed grains becomes more remarkable.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a combine capable of throwing threshed grains in a state with less bias in the grain tank.

The features of the present invention are a threshing device for threshing the harvested culm and a threshing device.
A grain tank for storing threshed grains and
A transport device that transports threshed grains and discharges them into the grain tank.
It is provided on the discharge trajectory of the discharged threshed grains and is provided with a guide portion for changing the traveling direction of the threshed grains .
The top plate of the grain tank is provided with an inspection port.
The guide portion is provided on a lid that opens and closes the inspection port portion .

According to the present invention, since the guide portion for changing the traveling direction of the threshed grains is provided on the discharge trajectory of the discharged threshed grains, the throwing direction of the threshed grains in the grain tank can be changed. ..

Therefore, in the case of the configuration in which the threshed grains are discharged to the rear side inside the grain tank by the rotation of the blade portion around the horizontal axis, it is assumed that the discharged threshed grains are once thrown in the direction of the top plate of the grain tank. However, the guide section changes the direction of travel, prevents it from hitting the top plate, and makes it easier for the thrown threshing grains to be thrown to the rear side inside the grain tank. It can be prevented and stored in a well-balanced distribution.

Further, in the case of the configuration in which the threshed grains are discharged to the front region of the discharge port by the rotation of the blade portion around the vertical axis, even if the discharged threshed grains are once thrown in the direction of the front region of the discharge port, the guidance is provided. The direction of travel is changed by the part, and it becomes easy to be thrown into the areas on both the left and right sides of the discharge port, that is, the front side and the rear side inside the grain tank. By preventing bias in the tank, it becomes possible to store in a well-balanced distribution state.
In addition, according to the present invention, the top plate of the grain tank is provided with an inspection port, and the lid for opening and closing the inspection port is provided with a guide, so that the installation space for the guide is the minimum required. This is enough, and a sufficient storage space for threshed grains can be secured. Further, when performing maintenance of the guide portion or the like, it can be easily carried out by removing the lid body.

In the present invention, it is preferable that a direction adjusting mechanism for adjusting the traveling direction is provided.

According to this configuration, the traveling direction of the threshing grains can be changed in various directions by the direction adjusting mechanism. Therefore, for example, when the thrown threshed grains start to be biased to a certain area in the grain tank, the traveling direction of the threshed grains is appropriately changed to another direction, and the thrown threshed grains are thrown to another area in the grain tank. It becomes possible to do so. Therefore, it becomes possible to more reliably prevent the threshed grains from being biased and to store them in a well-balanced distribution state. In addition, the traveling direction of the threshing grains guided by the guide unit may differ depending on the type and state of the crop. Therefore, by providing the direction adjustment mechanism, the threshing grains are thrown in a more suitable direction. It becomes easy to adjust.

In the present invention, it is preferable that the direction adjusting mechanism can adjust the traveling direction in multiple steps.

According to this configuration, since the direction adjusting mechanism can be adjusted in multiple stages, it is possible to set the traveling direction of the threshing grains more finely in stages, and it is possible to more reliably prevent the bias of the threshing grains. can.

In the present invention, it is preferable that the guide portion is provided with a base portion and a liner for protecting the base portion.

According to this configuration, since the guide portion is provided with a liner that protects the base, when deterioration due to wear occurs in the guide portion, only the liner needs to be replaced, which is compared with the case where the liner is not provided. , Maintenance work is simplified.

It is a right side view of the combine. It is a top view of the combine. It is a rear view explanatory view which shows the transport device and a grain tank in a combine. It is a side view explanatory view which shows the grain release device and the guide part in a combine. It is a rear view explanatory view which shows the grain release device and the guide part in a combine. It is explanatory drawing explaining the discharge trajectory of the threshing grain discharged from the grain discharge device. It is a plan view explanatory view which shows another embodiment of a guide part. It is a side view explanatory view which shows another embodiment of a guide part. It is a side view explanatory view which shows the other embodiment of the guide part. It is a plan view explanatory view which shows the other embodiment of the guide part. It is a rear view explanatory view which shows the transport device and a grain tank in another embodiment of a combine.

One of the specific embodiments of the combine 1 according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a normal type combine 1 which is an example of the combine 1, and FIG. 2 is a plan view. The combine 1 includes an airframe frame 8 in which a plurality of steel materials such as a groove-shaped material and a square pipe material are connected. A pair of left and right crawler type traveling devices 9 are mounted on the lower part of the fuselage frame 8. An engine 11 is mounted on the front side of the right half of the fuselage frame 8, and a cabin-structured driving unit 10 is formed above the engine 11.

The front part of the machine frame 8 is equipped with a cutting unit 2 that can be raised and lowered, and the rear part of the machine frame 8 is a threshing device 3 that threshes the cut grain culms supplied from the cutting part 2 and a threshing grain. Is equipped with a transport device for transporting and discharging the threshed grains into the grain tank 5, a grain tank 5 for storing the threshed grains, and an unloader 12 for discharging the threshed grains stored in the grain tank 5 to the outside. There is.

The cutting section 2 is configured to be able to move up and down around the horizontal axis X1 in the horizontal direction of the machine, and the cutting section 2 is in an ascending state during non-harvesting work such as turning, and is in a descending state close to the field scene during harvesting work. Become. The cutting section 2 was scraped by a pair of left and right dividers 20 for combing the planted culms, a scraping reel 21 for scraping the planted culms backward by being rotationally driven, and a scraping reel 21. The cutting blade device 22 that cuts the planted grain culms, the auger drum 23 that sends the cut grain culms cut by the cutting blade device 22 to the rear, and the auger drum 23 that sends the cut culms sent from the auger drum 23 to the front end of the threshing device 3. A feeder 24 for carrying is provided.

The threshing device 3 is configured to thresh the harvested culms supplied from the feeder 24 by a rotary-driven handling cylinder 30.

As shown in FIG. 3, the transport device 4 includes a first item recovery screw 40, a unloading conveyor 41, a lateral feed conveyor 42, and a grain release device 49 provided at the bottom of the threshing device 3, from the engine 11. It is configured to be driven by the power of. The unloading conveyor 41 is erected substantially vertically in order to send the threshed grains discharged from the threshing device 3 upward. The lifting conveyor 41 is a bucket conveyor in which a plurality of buckets 45 are attached at regular intervals on the outer peripheral side of an endless rotating chain 44 wound around a driving sprocket 43 and a driven sprocket (not shown).

The lifting conveyor 41 is a bucket conveyor that sends the threshed grains discharged from the threshing device 3 upward. The horizontal feed conveyor 42 is a screw conveyor that is connected to the transport terminal of the lift conveyor 41 and feeds the threshed grains transferred from the lift conveyor 41 into the grain tank 5. The lateral feeding conveyor 42 extends laterally from the upper end portion of the lifting conveyor 41 and is inserted into the upper part of the front side of the left side wall 52 of the grain tank 5, and the outer peripheral portion has a circular cross section (octagonal shape or other many). It is surrounded by a casing 46 (which may be rectangular). The lateral feed conveyor 42 includes a screw shaft 47 and a screw body 48 fixed to the screw shaft 47.

As shown in FIG. 4, a grain discharge device 49 for diffusing and discharging the threshed grains into the grain tank 5 is provided in the terminal region of the lateral feed conveyor 42. The grain release device 49 includes a release rotating body 412 and a release case 411 that covers the periphery of the release rotating body 412. The discharge rotating body 412 is a rotating blade composed of a rotating shaft 413 extended from the screw shaft 47 and a blade plate 414 provided on the rotating shaft 413. The blade plate 414 is fixed to the rotating shaft 413 so as to project outward from the rotating shaft 413. The blade plate 414 has a substantially flat extruded surface that extrudes the threshed grains in the direction of rotation thereof. The discharge case 411 has a cylindrical shape having an inner diameter slightly larger than the rotation locus of the blade plate 414. A part of the peripheral surface of the release case 411 is cut out. This notch forms a grain discharge port 410 that discharges the threshed grains to the rear side inside the grain tank 5 by the rotation of the blade plate 414.

The screw shaft 47 and the rotating shaft 413 rotate integrally around the horizontal axis X2. In this embodiment, the rotation direction is set to left rotation with reference to a line of sight from the base end side to the tip end side of the screw shaft 47 along the horizontal axis X2. That is, the blade plate 414 rotates counterclockwise (horizontally about the horizontal axis) in FIG.

As shown in FIGS. 4 and 5, the grain discharge port 410 is approximately one-third the width of the blade plate 414 in the axial direction of the release case 411 and approximately one-third in the rotational direction from the lower end in the circumferential direction of the release case 411. A notch opening over the length of the circumference. The threshed grains pushed by the blade plate 414 are discharged from the release case 411 into the grain tank 5 through the grain discharge port 410.

A load detector 7 is installed below the grain discharge port 410. The load detector 7 is fixed to a stay 72 erected from the support member 71 of the right side wall 51 of the grain tank 5 to the support member 71 of the left side wall 52. The load detector 7 is configured to detect the load applied to the pressing action unit 70, and the pressing action unit 70 is provided with a load cell. When the threshing grains are released by the blade plate 414, the pressing force on the threshing grains by the rotational force of the blade plate 414 is transmitted to the pressing action unit 70 via the threshing grains. The pressure due to this pressing causes strain in the pressing action portion 70. The pressure on the threshed grains by the blade plate 414 increases as the amount of threshed grains transported by the transport device 4 increases. Therefore, the electric signal generated in the load cell due to the strain of the pressing action unit 70 has a strength that depends on the amount of threshed grains transported (the amount of threshed grains harvested: yield), and is therefore transported. It can be treated as a detection signal for evaluating the fluctuation and amount of threshed grains.

As shown in FIG. 3, a taste measuring device 15 for measuring the taste of threshed grains is provided below the grain discharge port 410. The threshed grains are temporarily stored in the taste measuring container 151 of the taste measuring device 15, and the grain components such as water and protein are measured through spectroscopic measurement of the threshed grains.

Since the threshed grains conveyed by the horizontal feed conveyor 42 tend to fall in the same trajectory as when the horizontally projected object freely falls, the taste measuring device 15 is placed directly under the grain discharge port 410. It is provided at a position slightly closer to the right side wall 51 of the grain tank 5. As a result, the threshed grains can be efficiently stored in the taste measuring container 151 of the taste measuring device 15.

The grain tank 5 is arranged at the rear right side on the machine frame 8, is located on the right side adjacent side of the threshing device 3, and is located at the rear side of the operation unit 10. A lifting conveyor 41 for supplying threshed grains from the threshing device 3 to the grain tank 5 is arranged between the threshing device 3 and the grain tank 5.

As shown in FIG. 2, an inspection port 53 is opened behind the top plate 50 of the grain tank 5. The inspection port 53 is provided with a lid 54 for opening and closing the inspection port 53, and the lid 54 is configured to be swingably openable and closable by a hinge 55. The lid 54 is provided with a transparent window portion 56 made of a transparent synthetic resin plate or the like so that the grain storage state inside the grain tank can be confirmed from the outside.

As shown in FIGS. 4 and 5, a flat plate-shaped guide portion 6 is supported on the top plate portion 50 of the grain tank 5. In the present embodiment, since the guide portion 6 is supported by the top plate portion 50 of the grain tank, the installation space of the guide portion 6 can be minimized, and a sufficient storage space for threshed grains can be secured. ..

The guide portion 6 is welded to the rotary rod 61 via the connecting portion 60, and the rotary rod 61 is rotatably supported around the horizontal axis X3 by the support member 62 fixed to the top plate portion 50. .. The rotary rod 61 is provided with one end penetrating through a through hole (not shown) formed in the left side wall 52 of the grain tank, and an operation lever 63 is provided at the end of the rotary rod 61. Has been done.

As shown in FIGS. 2 and 4, the guide portion 6 is provided above and behind the grain release device 49. Further, the left and right widths of the guide portion 6 are set to be at least larger than the width of the grain discharge device 49.

As shown in FIG. 4, the guide unit 6 is provided on the discharge trajectory of the threshed grains discharged from the grain discharging device 49, and is configured to change the traveling direction of the threshed grains. In the present embodiment, the incident angle A1 and the reflection angle A2 with respect to the guide portion 6 of the threshed grains discharged from the grain discharge device 49 are discharged from the grain discharge device 49 when the guide portion 6 is not provided. The angle of incidence a1 and the angle of reflection a2 with respect to the top plate 50 of the threshed grain tank 5 are set to be larger (A1> a1, A2> a2).

With the above configuration, as shown in FIGS. 4 and 6, even if the threshed grain K discharged from the grain releasing device 49 is once thrown in the direction of the top plate portion 50 of the grain tank 5, the guide portion is provided. 6 changes the traveling direction, prevents the ball from hitting the top plate 50, and makes it easier for the threshed grains to be thrown to the rear side inside the grain tank 5 (the right side of the paper in FIGS. 4 and 6). It is possible to prevent K from being biased in the grain tank 5 and store it in a well-balanced distribution state.

In the present embodiment, by rotating the operating lever 63 around the horizontal axis X3 of the rotating rod 61, the rotating rod 61, the connecting portion 60, and the guide portion 6 can be integrally rotated around the horizontal axis X3. It is configured so that it can be done. Therefore, the angle of the guide portion 6 can be changed by operating the operating lever 63, whereby the traveling direction of the threshed grains can be adjusted. That is, in the present embodiment, the direction adjusting mechanism for adjusting the traveling direction of the threshed grains is configured to include a support member, a rotary rod 61, a connecting portion 60, and an operating lever 63.

According to the above configuration, the traveling direction of the threshing grains can be changed in various directions by the direction adjusting mechanism. Therefore, for example, when the thrown threshed grains start to be biased to a certain area in the grain tank 5, the traveling direction of the threshed grains is appropriately changed to another direction and thrown to another area in the grain tank 5. It becomes possible to be done. Therefore, it becomes possible to more reliably prevent the threshed grains from being biased and to store them in a well-balanced distribution state. Further, the traveling direction of the threshing grains guided by the guide unit 6 may differ depending on the type and state of the crop. Therefore, by providing the direction adjusting mechanism, the threshing grains are thrown in a more suitable direction. It becomes easy to adjust so that it is done.

The direction adjusting mechanism is not limited to the above configuration, and is not shown. In addition, for example, the guide portion 6 is suspended and supported at two points, the front end and the rear end, and suspended at each of the guide portions 6. It is configured by making the lowering distance manually adjustable (for example, by combining a stay with multiple bolt holes and a bolt and adjusting the length of the stay by changing the hole through which the bolt is inserted). It may be configured so that the direction can be adjusted electrically by using a motor or the like, or it may be configured so that the direction can be adjusted by using a known automatic tension method regardless of whether it is manual or electric. good.

It is desirable that the direction adjusting mechanism is configured so that the traveling direction can be adjusted in multiple stages. For example, in the above-described embodiment, it is preferable to adopt a known configuration in which the angle around the horizontal axis X3 of the operating lever 63 can be changed and held stepwise.

According to the above configuration, since the direction adjusting mechanism can be adjusted in multiple stages, it is possible to set the traveling direction of the threshing grains more finely in stages, and it is possible to more reliably prevent the bias of the threshing grains. can.

The direction adjusting mechanism may be provided as needed. That is, the guide portion 6 may be fixed to the top plate portion 50 of the grain tank 5 so that the angle thereof cannot be changed.

The position where the guide portion 6 is provided is not limited to the above-described embodiment, and is not shown. The guide portion 6 may be provided on the lid 54 that opens and closes the inspection port portion 53, or may be provided in the vicinity of the inspection port portion 53. In the case of the configuration in which the guide portion 6 is provided on the lid 54, maintenance or the like of the guide portion 6 can be easily performed by removing the lid 54. Further, when the guide portion 6 is provided in the vicinity of the inspection port portion 53, the operator can easily perform the maintenance of the guide portion 6 through the inspection port portion 53.

In particular, when the guide portion 6 is provided on the lid 54, the lid 54 is provided with, for example, an appropriate rod member and a leaf spring that sandwiches the rod member in order to prevent the stored degrained grains from being applied to the guide portion 6. The lid 54 is pushed up, the rod member is disengaged from the leaf spring, and the lid 54 is opened. It is good to configure it so that it can be used.

It is desirable that the guide portion 6 is provided with a base portion and a liner for protecting the base portion. In this case, the liner is provided at the base of the guide portion 6 so as to cover the surface on which the threshed grains discharged from the grain release device hit.

According to the above configuration, since the guide portion 6 is provided with a liner that protects the base, when deterioration due to wear occurs in the guide portion 6, only the liner needs to be replaced, so that the liner is not provided. In comparison, maintenance work is simplified.

The guide portion 6 is not limited to the form in which the top plate portion 50 is fixed at a predetermined position, and may be configured so that the set position can be changed in the front-rear and left-right directions of the top plate portion 50 of the grain tank. Further, the guide portion 6 may be configured to also serve as a pressing action portion of the load detector.

[Another Embodiment]
Since the form of the grain release device 49 differs depending on the type of the combine 1, in the present invention, the form of the grain release device 49, the shape and arrangement of the pressing action unit 70 and the load detector 7 are the same as those in the above-described embodiment. Not limited.

For example, in FIGS. 7 and 8, a grain release device 49 is provided at the upper end of a screw conveyor type lifting conveyor 41 that conveys the threshing grains K from the bottom of the threshing device 3 to the upper part of the grain tank 5. The grain discharging device 49 includes a blade plate 417 provided along the axial direction at the upper end of the shaft body 416 of the screw conveyor 415 constituting the lifting conveyor 41, and a blade cover 418 covering the blade plate 417. ing. The blade cover 418 opens a region of the rotation locus of the blade plate 417 (rotation around the vertical axis) facing the inside of the grain tank 5, and this opening opens the grain release of the threshed grain K. It becomes the exit 410. The threshed grain K conveyed by the screw conveyor 415 is bounced from the grain discharge port 410 toward the inside of the grain tank 5 by the blade plate 417 rotating around the vertical axis.

A plate-shaped pressing action portion 70 and a load detector 7 using a load cell are attached to the side wall of the blade cover 418 at a position where the threshing grain K is sandwiched between the blade cover 417 and the blade plate 417 when the grains are released. Since the threshed grains K conveyed by the lifting conveyor 41 are pressed against the side wall of the blade cover 418 by the blade plate 417, a load corresponding to the amount of the threshed grains K is applied to the pressing action unit 70. The load detector 7 (load cell) detects the load applied to the side wall.

In the present embodiment, the top plate portion 50 of the grain tank is supported by a flat plate-shaped guide portion 6 having a dogleg shape in a plan view. The guide portion 6 is welded to the rotary rod 61 at the bent portion thereof, and the rotary rod 61 is rotatably supported by the top plate portion 50 around the vertical axis core X4. The rotary rod 61 is provided with one end penetrating through a through hole (not shown) formed in the top plate portion 50 of the grain tank, and an operation lever 63 is provided at the end of the rotary rod 61. It is provided.

As shown in FIG. 7, a grain release device 49 is provided at an intermediate portion in the front-rear direction of the left side wall 52 of the grain tank. The guide portion 6 is provided in front of the grain discharge port 410 in the grain discharge device 49, that is, on the side of the right side wall 51 of the grain tank 5.

The guide portion 6 is provided on the discharge trajectory of the threshed grains discharged from the grain discharging device 49, and is configured to change the traveling direction of the threshed grains. In the present embodiment, even if the discharged threshed grains are once thrown in the direction of the front region of the grain discharge port 410 of the grain release device 49, the traveling direction is changed by the guide unit 6. It is configured to be thrown to the rear side (right side of the paper in FIGS. 7 and 8) inside the grain tank 5. As a result, the thrown threshing grains K can be prevented from being biased in the grain tank 5 and can be stored in a well-balanced distribution state.

The shape of the guide portion 6 is not limited to the above-mentioned shape, and may have an arcuate curved surface in a plan view.

In another embodiment, the operating lever 63 is rotated around the vertical axis core X4 of the rotating rod 61 so that the rotating rod 61 and the guide portion 6 can be integrally rotated around the vertical axis core X4. It is configured. Therefore, the angle of the guide portion 6 can be changed by operating the operating lever 63, whereby the traveling direction of the threshed grains can be adjusted. That is, in the present embodiment, the direction adjusting mechanism for adjusting the traveling direction of the threshed grains is configured to include the rotating rod 61 and the operating lever 63.

The direction adjusting mechanism may be configured so that the direction can be adjusted by using a known automatic tension method regardless of manual or electric, or manual or electric, as in the previous embodiment. ..

It is desirable that the direction adjusting mechanism is configured so that the traveling direction can be adjusted in multiple stages, as in the previous embodiment. For example, in the above-mentioned other embodiment, it is preferable to adopt a known configuration in which the angle around the vertical axis core X4 of the operating lever 63 can be changed and held stepwise.

The direction adjusting mechanism may be provided as needed, as in the previous embodiment. That is, the guide portion 6 may be fixed to the top plate portion 50 of the grain tank 5 so that the angle thereof cannot be changed.

As for the position where the guide portion 6 is provided, as in the previous embodiment, the guide portion 6 may be provided on the lid 54 that opens and closes the inspection port portion 53, or may be provided near the inspection port portion 53. Is also good. In particular, when the guide portion 6 is provided on the lid 54, the lid 54 is provided with, for example, an appropriate rod member and a leaf spring that sandwiches the rod member in order to prevent the stored degrained grains from being applied to the guide portion 6. The lid 54 is pushed up, the rod member is disengaged from the leaf spring, and the lid 54 is opened. It is good to configure it so that it can be used.

Although not shown, it is desirable that the guide portion 6 is provided with a base portion and a liner for protecting the base portion. In this case, the liner is provided at the base of the guide portion 6 so as to cover the surface on which the threshed grains discharged from the grain release device hit.

The guide portion 6 is not limited to the form in which the top plate portion 50 is fixed at a predetermined position, and may be configured so that the set position can be changed in the front-rear and left-right directions of the top plate portion 50 of the grain tank. Further, the guide portion 6 may be configured to also serve as a pressing action portion of the load detector.

[Other Embodiments]
1. 1. As shown by W1 in FIG. 9, the guide portion 6 in the above-described embodiment has, in a side view, the upper tip portion of the release case 411 (see FIG. 4) of the grain release device 49 and the release case 411. It may be configured to overlap in the front-rear direction above the above. With this configuration, since there is no gap between the grain discharge device 49 and the guide portion 6 in the side view, a part of the threshed grains released from the grain discharge port 410 passes through the gap and the guide portion. It is possible to prevent the 6 from accumulating on the upper surface and being lost. The other configurations of the guide unit 6 shown in FIG. 9 are the same as those of the above-described embodiment.

2. As shown by W2 in FIG. 10, in a plan view, the guide portion 6 in the above-described alternative embodiment has the grain discharge port 410 of the grain discharge device 49 and the front side inside the grain tank 5 (FIG. 10). It may be configured to overlap on the left side of the paper). With this configuration, since there is no gap between the grain discharge device 49 and the guide portion 6 in a plan view, the threshed grains released from the grain discharge port 410 are more reliably guided without passing through the gap. The traveling direction is changed by the part 6, and the grain tank 5 is thrown to the rear side (right side of the paper surface in FIG. 10) inside. The other configurations of the guide unit 6 shown in FIG. 10 are the same as those of the above-described other embodiment.

3. 3. In the above-described embodiment, a configuration is described in which a load detector 7 is installed below the grain discharge port 410 to measure the yield of threshed grains by detecting the pressing force from the threshed grains. However, the configuration is not limited to this, and the yield of threshed grains may be measured by detecting a load applied to the screw shaft 47, for example.

Specifically, for example, as shown in FIG. 11, an electric motor M as an actuator independent of engine power and a rotation sensor S for detecting the rotation speed of the screw shaft 47 are provided on the screw shaft 47. In this configuration, when the screw shaft 47 is rotated so that the rotation speed becomes constant by the power of the electric motor M, the load applied to the screw shaft 47 increases and rotates as the amount of degrained grains transported increases. The number decreases. Therefore, if the correspondence between the amount of threshed grains and the rotation speed of the screw shaft 47 is calculated in advance as a calibration curve, the yield of threshed grains can be measured from the detected value of the rotation sensor S.

Further, in the configuration shown in FIG. 11, only the screw shaft 47 is configured to be rotated independently of the engine power by the electric motor M, but the present invention is not limited to this, and the first item recovery screw 40 and the lifting conveyor are not limited to this. All of the screw shafts 47 of the 41 and the lateral feed conveyor 42 are configured to be rotated independently of the engine power by the electric motor M. For example, not only the screw shaft 47 but also the first item recovery screw 40 It may be configured to detect the number of rotations.

Further, instead of the rotation sensor S in the above configuration, for example, a torque sensor may be provided to calculate the load applied to the screw shaft 47 based on the detected torque and measure the yield of threshed grains.

Further, the configuration for detecting the load applied to the screw shaft 47 may be combined with the load detector 7 in the above embodiment, or each of them may be provided independently.

Although not shown, the configuration for detecting the load applied to the screw shaft 47 may be applied to the shaft body 416 of the screw conveyor 415 in another embodiment.

As described above, the reference numerals are given for convenience of comparison with the drawings, but the description does not limit the present invention to the configuration of the accompanying drawings. In addition, it goes without saying that it can be carried out in various modes as long as it does not deviate from the gist of the present invention.

The combine can be used for a head-feeding combine instead of a normal combine.

3: Grain removal device 30: Handling cylinder 4: Conveyor device 40: First item recovery screw 41: Lifting conveyor 42: Horizontal feed conveyor 43: Drive sprocket 44: Endless rotating chain 45: Bucket 46: Casing 47: Screw shaft 48 : Screw body 49: Grain discharge device 410: Grain discharge port 411: Release case 412: Discharge rotating body 413: Rotating shaft 414: Blade plate 415: Screw conveyor 416: Shaft body 417: Blade plate 418: Blade cover 5: Grain tank 50: Top plate (top plate)
51: Right side wall 52: Left side wall 53: Inspection port 54: Lid 55: Hinge 56: Transparent window part 6: Guide part 60: Connecting part 61: Rotating rod 62: Support member 63: Operating lever K: Threshed grain

Claims (4)

A threshing device that threshes the harvested culm,
A grain tank for storing threshed grains and
A transport device that transports threshed grains and discharges them into the grain tank.
It is provided on the discharge trajectory of the discharged threshed grains and is provided with a guide portion for changing the traveling direction of the threshed grains .
The top plate of the grain tank is provided with an inspection port.
The guide portion is a combine provided on a lid that opens and closes the inspection port portion. The combine according to claim 1, further comprising a direction adjusting mechanism for adjusting the traveling direction. The combine according to claim 2, wherein the direction adjusting mechanism can adjust the traveling direction in multiple stages. The combine according to any one of claims 1 to 3 , wherein the guide portion includes a base portion and a liner that protects the base portion.

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