JP7113691B2 - combine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a combine provided with a threshing device for threshing a crop harvested by a harvesting section, and a threshing tank for storing the threshed grain obtained by the threshing device.

In the above-described combine, a lower tapered portion formed at the bottom of the threshing tank, a bottom screw provided inside the lower tapered portion for discharging threshed grain from the threshing tank, and a bottom screw connected to the bottom screw and a threshing discharge device for conveying the threshing from the screw and discharging it toward the outside of the machine body. This combine is constructed such that the threshing stored in the threshing tank is taken out from the threshing tank by a bottom screw and a threshing discharging device.

In this type of combine, for example, as shown in Patent Document 1, an inspection opening (maintenance opening in Document 1) is opened in a lower narrowed portion (bottom in Document 1) of a threshing tank (grain tank in Document 1). Some are equipped with a cover for opening and closing the inspection port. This makes it possible to remove the threshed grains remaining in the lower tapered portion through the inspection opening for cleaning.

JP 2011-229429 A

In the combine harvester described above, when the lid body is configured to open and close with the shaft center parallel to the screw shaft center of the bottom screw as the swing fulcrum, the lid body must be installed in order to smoothly open and close the lid body. Hinge members that are swingably supported by the lower narrowed portion are provided at a plurality of locations in the cover in a direction along the conveying direction of the bottom screw. Since it is necessary to make the length corresponding to the length in the direction along the axis, the pivotal support structure of the lid becomes large.

The present invention provides a combine harvester capable of supporting a lid in a state of being able to be smoothly opened and closed by a small and simple pivot structure.

The combine according to the invention is
a threshing device for threshing the crops harvested by the harvesting unit;
a threshing tank that stores threshed grains obtained by the threshing device and that is provided above the threshing device with a bottom tapered portion formed in the bottom;
a bottom screw extending along the width direction of the machine body inside the lower tapered portion for discharging threshing grain from the threshing tank;
a threshing discharge device connected to the bottom screw for conveying threshed grains from the bottom screw and discharging them out of the machine body;
A top plate having a cross-sectional shape that bulges upward when viewed along the longitudinal direction of the machine body is provided on the upper part of the threshing device,
The threshing tank is provided with an inspection opening opened at the bottom portion of the lower tapering portion, and a lid for opening and closing the inspection opening,
The lid body is opened and closed by swinging up and down in the space between the bottom portion and the top plate with an axis non-parallel to the screw axis of the bottom screw as a swing fulcrum. is.

According to this configuration, the lid body can be supported on the lower tapered portion in a state where the pivot shaft core along the non-parallel direction to the screw shaft core is used as the connecting shaft core, so that the lid body can be pivotally supported. The lid body can be smoothly opened and closed while the size is kept small. Further, when the lid is opened, the lid assumes an inclined posture in which the side of the lid opposite to the swinging fulcrum side is lowered with respect to the inspection opening. Since the lid body can be used for both, it is easy to take out the threshed grains without preparing a special guide member.

Another combine according to the invention comprises:
A threshing device for threshing a harvest harvested by a harvesting unit, a threshing tank for storing the threshed grain obtained by the threshing device and having a downwardly tapered portion formed at the bottom thereof, and the downwardly tapered portion. a bottom screw provided inside the threshing tank for discharging threshing grains from the threshing tank; and, the threshing tank is provided with an inspection opening opened at the bottom portion of the lower tapered portion, and a lid body for opening and closing the inspection opening, and the lid body is provided with the bottom screw. The cover is opened and closed by vertical swing with an axis that is non-parallel to the screw axis as the swing fulcrum, and the cover includes a cover bottom plate portion and a pair of lid side plates rising from both lateral ends of the cover bottom plate portion. and the pair of lid side plate portions are inclined in a state in which the distance between the lid side plate portions increases toward the upper end of the lid side plate portion, and in a state along the side plate portions at the lower tapered portion. an inner lid part that enters the inspection opening in the closed state of the lid body and makes the inner surface of the lid bottom plate part and the inner surface of the bottom part flush with each other; and an outer lid portion that abuts on the outer surface of the bottom portion, and is provided across the lid bottom plate portion and the bottom portion, and is a hinge member that supports the lid body on the lower tapered portion so that it can be opened and closed by swinging. A connecting shaft connecting the hinge member to the bottom portion protrudes outward from the bottom portion, and a lock mechanism for fixing the lid body in a closed state is provided with a shaft extending outward from the lower tapered portion. an elongated hole formed in the lid side plate portion; and a nut that is inserted through the elongated hole and fastened to the screw shaft .

According to this configuration, when the lid body is closed, the lid side plate portion is aligned with the side plate portion of the lower tapered portion, so that the lid body does not shift and the inspection port is tightly closed so that the threshing grains do not leak out from the inspection port. can be done. Also, when the lid body is used as a guide member for guiding the threshed grains coming out of the inspection opening, the threshed grains are received by the lid side plate portion and are less likely to spill out of the lid body, making it easier to take out the threshed grains.

According to this configuration, when the lid is closed, the inner surface of the lid and the inner surface of the bottom portion are flush with each other. Regardless of the presence of the thresh, the threshed grains smoothly flow inside the lower tapered portion and do not remain in the lower tapered portion, so that the threshed grains can be taken out quickly and completely.

When the lid is opened and closed, the closed fixing of the lid can be released or the lid can be fixed in the closed state by operating the nut device on the outside of the lid side plate part, so that the lid can be easily opened and closed.

In the present invention, it is preferable that the shaft core is provided at an end portion of the lid on the upper side in the conveying direction of the bottom screw.

According to this configuration, when the threshed grains remaining in the lower narrowed portion are discharged from the inspection opening by the rotation of the bottom screw, the threshed grains pushed out by the bottom screw are pushed out in the direction along the inclined direction of the open lid. So you can take out grains smoothly.

In the present invention, it is preferable that the inspection port is biased toward the side where the grain threshing discharge device is located with respect to the central portion of the bottom screw in the conveying direction of the bottom portion.

According to this configuration, when cleaning the grain threshing discharge device and cleaning the lower tapered portion at the same time, the cleaning work is easy because the threshing discharge device and the lid are close to each other.

It is a left view which shows the whole combine. It is a longitudinal rear view showing a threshing section tank. It is a vertical side view which shows a threshing tank. FIG. 4 is a rear view showing the inspection port and lid in an open state;

An embodiment, which is an example of the present invention, will be described below with reference to the drawings.
In the following description, regarding the machine of the combine harvester, the direction of arrow F shown in FIG. The direction is defined as "bottom of the aircraft", the direction toward the front side of the paper is "left of the aircraft", and the direction toward the back of the page is "right of the aircraft".

[Regarding the overall configuration of the combine harvester]
As shown in FIG. 1, the combine includes a body frame 1, a pair of left and right front wheels 2 drivably mounted on the front part of the body frame 1, and a steering wheel mounted on the rear part of the body frame 1. It has a body having a pair of left and right rear wheels 3. The body frame 1 is provided with a pair of left and right main frames 1a extending in the longitudinal direction of the body. A boarding-type driving section 4 is formed in the front part of the body. The driving unit 4 is provided with a cabin 5 covering a boarding space. A harvesting and conveying device 6 is connected to the front portion of the body frame 1 . The harvesting and transporting device 6 includes a harvesting section 7 which is provided in front of the machine body and which cuts and harvests the stalks of crops such as paddy rice, wheat, and rapeseed located in front of the machine body during work traveling, and a harvesting section 7 at the rear of the harvesting section 7. A feeder 8 is provided which is connected to the front part and conveys the reaping culms harvested by the harvesting part 7 . The feeder 8 is connected to the machine body frame 1 so as to move up and down with a connection axis P1 extending in the horizontal direction of the machine body as a swing fulcrum. The harvesting unit 7 is moved up and down between a lowering working state and a rising non-working state by swinging and raising the feeder 8 by extending and contracting a hydraulic lifting cylinder 9 connected to the feeder 8 . A threshing device 10 is provided at the rear of the machine body for receiving the harvested culms conveyed by the feeder 8 as threshing objects, threshing the culms, and sorting the threshed products. Above the front part of the threshing device 10, a threshing tank 11 is provided for collecting and storing single grains as threshed grains transported from the threshing device 10 by a supply transport device (not shown). . A threshing discharge device 12 for discharging the stored grains is connected to the lower left side portion of the threshing tank 11 . A driving unit 14 having an engine 13 is formed above the rear part of the threshing device 10 .

[Regarding the configuration of the harvesting part]
In the harvesting section 7, as shown in FIG. 1, dividers 15 are provided at the left and right ends of the front end of the harvesting section 7 to divide the uncut grain culms into the grain culms to be harvested and the grain culms not to be harvested. is provided. A rotary reel 16 is provided above the front portion of the harvesting section 7 to rake the tip side of the culm to be harvested backward. Behind the divider 15, a clipper-type reaping device 17 is provided for cutting the root of the culm that has been plucked. An auger 18 is provided at the rear of the harvesting device 17 to collect harvested grain culms to the front side of the feeder 8 and feed the collected harvested grain culms as a whole from the base to the tip to the feeder 8 .

[Regarding the configuration of the threshing tank and the threshing discharge device]
As shown in FIGS. 1 and 3, the lower portion of the front wall portion 11f of the threshing tank 11 is inclined toward the rear toward the lower end side, and the lower portion of the rear wall portion 11r of the threshing tank 11 is inclined toward the lower end side. The bottom of the grain threshing tank 11 is formed in an inclined state positioned forward, and a downwardly tapered portion 20 extending over the entire width of the bottom is formed. As shown in FIGS. 2 and 3, the lower tapered portion 20 includes a horizontal bottom portion 20a, a front side plate portion 20b rising from the front end of the bottom portion 20a, and a rear end of the bottom portion 20a. A rear side plate portion 20b is provided. As shown in FIG. 2, a discharge port 21 is opened at the end of the lower tapering portion 20 on the left lateral side of the threshing tank. As shown in FIGS. 2 and 3, a bottom screw 22 is rotatably mounted inside the lower tapered portion 20 . A drive pulley 23 is supported by a screw shaft 22a of a bottom screw 22 in a non-rotatable manner outside the lower constricted portion 20 on the right lateral side of the threshing tank.

As shown in FIGS. 1 and 2, a connection case 24 is provided at the left lateral end portion of the bottom of the threshing tank 11 . The grain threshing discharge device 12 extends from the connection case 24 . The threshing discharge device 12 and the bottom screw 22 are connected via a connection case 24 . The grain threshing discharge device 12 and the bottom screw 22 are interlocked and connected inside the connection case 24 so that power can be transmitted from the bottom screw 22 to the grain threshing discharge device 12 .

Specifically, the threshing discharge device 12 is configured by a screw conveyor extending from the connection case 24 . A conveying cylinder of the screw conveyor communicates with the discharge port 21 through the connection case 24 . Inside the connection case 24, the screw shaft of the screw conveyor and the screw shaft 22a of the bottom screw 22 are connected so that the power of the bottom screw 22 is transmitted to the screw conveyor.

The connection case 24 is rotatably supported by the threshing tank 11 . As shown in FIG. 1 , a hydraulic cylinder 25 is connected to the connection case 24 so that the connection case 24 can be rotated by extending and contracting the hydraulic cylinder 25 .

In order to take out the grains from the threshing tank 11, the connection case 24 is rotated by the hydraulic cylinder 25, so that the threshing discharge device 12 is stretched from the stored state along the lateral side of the machine body to the lateral outside of the machine body. Change state to used state.

By switching on the power transmission system that transmits the power of the engine 13 to the driving pulley 23, the driving pulley 23 is driven, the bottom screw 22 is driven, and the power of the bottom screw 22 is transmitted to the grain threshing and discharging device 12. Then, the grain threshing discharge device 12 is driven. When the bottom screw 22 and the threshing discharge device 12 are driven, the grains stored in the threshing tank 11 are discharged into the connection case 24 through the discharge port 21 by the bottom screw 22 . The grains discharged into the connection case 24 are taken over by the grain threshing discharge device 12 and conveyed by the grain threshing discharge device 12, and the grain discharge port 12a provided at the tip of the grain threshing discharge device 12 (see FIG. 1). ).

[Regarding the configuration of the inspection port and lid]
As shown in FIGS. 2 and 3, the lower tapered portion 20 is provided with an inspection opening 26 opened in the bottom portion 20a of the lower tapered portion 20, and a lid 27 for opening and closing the inspection opening 26. .

More specifically, the inspection port 26 is provided in a state of being biased toward the side where the threshing discharge device 12 is located with respect to the central portion of the bottom screw 22 in the conveying direction of the bottom portion 20a. The inspection opening 26 and the threshing discharge device 12 are located close to each other, and work such as cleaning to discharge grains remaining in the lower tapered portion 20 from the inspection opening 26 and work such as inspection of the threshing discharge device 12. and at the same time.

As shown in FIGS. 2 and 4, a hinge member 28 is provided across the upper end of the bottom screw 22 in the conveying direction of the lid 27 and the bottom portion 20a. The hinge member 28 and the bottom portion 20a are connected by a connecting shaft 29 projecting outward from the bottom portion 20a. The connecting shaft 29 is supported by the bottom portion 20a without protruding inside the bottom portion 20a. Specifically, the connecting shaft 29 protrudes from a support portion 30 formed on the outer surface side of the bottom portion 20a. In this embodiment, a connection screw is employed as the connection shaft 29 . The connecting shaft 29 is not limited to a connecting screw, and may be a connecting rod, a connecting pin, or the like. A hinge member 28 is provided at the upper end of the bottom screw 22 in the conveying direction of the lid body 27 to provide a pivotal axis P2 non-parallel to the screw axis of the bottom screw 22. 27 is supported by the lower tapered portion 20 so as to be opened and closed by vertical rocking with the shaft center P2 as the rocking fulcrum. In the present embodiment, the axis P2 that is orthogonal to the screw axis in a plan view is used as the axis P2 that is non-parallel to the screw axis, but the present invention is not limited to this. The "axis non-parallel to the screw axis" in the configuration of the present invention refers to the axis perpendicular to the screw axis in plan view, as well as the axis slightly perpendicular to the screw axis in plan view. It includes offset axes, ie, axes that are substantially perpendicular to the screw axis in plan view.

As shown in FIGS. 3 and 4, the lid body 27 includes an outer lid portion 27a and an inner lid portion 27b. The outer lid portion 27a is provided with a lid bottom plate portion 27c and lid side plate portions 27d rising from both lateral end portions of the lid bottom plate portion 27c. As shown in FIG. 4, the lid side plate portions 27d at both lateral ends are inclined such that the distance between the lid side plate portions 27d increases toward the upper end of the lid side plate portion 27d.

As shown in FIGS. 2 and 3, the outer lid portion 27a is arranged such that one lid side plate portion 27d is along the outer surface of the front side plate portion 20b of the lower tapered portion 20 when the lid body 27 is closed. In addition, the other lid side plate portion 27d is aligned with the outer surface of the rear side plate portion 20b of the lower tapered portion 20, and the lid bottom plate portion 27c is in contact with the outer surface of the bottom portion 20a around the inspection opening 26. configured to touch.

As shown in FIGS. 2 and 3, when the lid 27 is closed, the inner lid portion 27b enters the inspection opening 26 so that the inner surface 27S of the lid bottom plate portion 27c and the inner surface 20S of the bottom portion 20a are flush with each other. is configured to

As shown in FIGS. 2 and 3, a locking mechanism 31 is provided across the front and rear sides of the tapered portion 20 and the free end of the lid 27 to fix the lid 27 in the closed state. As shown in FIGS. 3 and 4, each of the front locking mechanism 31 and the rear locking mechanism 31 includes a screw shaft 31a protruding outward from the side plate portion 20b of the lower tapered portion 20, and a lid. A long hole portion 32 formed in the side plate portion 27d and a nut device 31b fastened to the screw shaft 31a are provided. In the present embodiment, notched holes are employed as the elongated holes 32, but the present invention is not limited to this. In other words, depending on the inclination angle and rising length of the lid side plate portion 27d, it is possible to employ a long hole portion having a shape that does not open to the upper side of the lid side plate portion 27d. Although a wing nut is used as the nut tool 31b in this embodiment, it is not limited to this. For example, it is possible to adopt various nut members such as a hexagonal nut and a capped nut.

In the lock mechanisms 31 on the front and rear sides, the screw shaft 31a enters the long hole portion 32 as the lid 27 swings toward the closed state, and when the lid 27 is closed, The screw shaft 31a is inserted through the long hole portion 32. As shown in FIG. When the screw shaft 31a is inserted through the long hole portion 32, the nut device 31b is fastened to the screw shaft 31a. Then, the lid side plate portion 27d is tightened to the side plate portion 20b by the tightening force of the nut device 31b and the screw shaft 31a, and the lid body 27 is fixed in the closed state. By releasing the fastening of the nut device 31b to the screw shaft 31a, the tightening of the lid side plate portion 27d to the side plate portion 20b is released, and the lid body 27 is released from the closed state. It becomes possible to change the state to the open state.

Normally, as shown in FIGS. 2 and 3, the lid body 27 is swung upward with respect to the lower tapered portion 20 with the axis P2 serving as the swinging fulcrum, and is brought into contact with the lower tapered portion 20. Then, the cover 27 is closed and the inspection port 26 is closed. When the lid body 27 is in a closed state, the lid body 27 is fixed in the closed state by the front and rear lock mechanisms 31 by fastening the nut fittings 31b to the front and rear screw shafts 31a, and the grains in the threshing tank 11 are secured to the bottom screw. 22 and the thresher discharge device 12. The inner surface 27S of the lid bottom plate portion 27c and the inner surface 20S of the bottom portion 20a are flush with each other by the inner lid portion 27b, so that grains do not enter the inspection opening 26 and can be taken out smoothly. The lid bottom plate portion 27c abuts against the outer surface of the bottom portion 20a around the inspection port 26, and a pair of lid side plate portions 27d are arranged along the front and rear side plate portions 20b, thereby firmly closing the inspection port 26 and allowing the grains to be inspected. can be taken out without leaking from the inspection port 26.例文帳に追加

When grains remain in the lower narrowed portion 20, as shown in FIG. 4, the fastening of the nut tool 31b to the front and rear screw shafts 31a is released, and the lid body 27 is in a state where the axis P2 serves as a swinging fulcrum. , the free end side of the lid body 27 is separated downward from the lower tapering section 20, and the lid body 27 is opened to open the inspection port 26. , the grains of the lower tapered portion 20 can be taken out from the inspection opening 26. - 特許庁The free end side of the lid body 27 is inserted into the empty space formed by the arc shape (upward bulging) of the top plate 10t between the threshing tank 11 and the top plate 10t of the threshing device 10, so that the lid body 27 is free. The end side can be lowered significantly, making it easy to take out the grain. The lid body 27 is used as a guide member that guides grains from the inspection opening 26 by opening the lid body 27 with an axis P2 that is non-parallel to the screw axis of the bottom screw 22 as a swing fulcrum. In addition, since the grains flowing down the lid 27 are prevented from falling from the lid 27 by the lid side plate portion 27d, the grains are easily taken out. The lid 27 is opened with the axis P2 located at the upper end of the bottom screw 22 in the conveying direction of the lid 27 as a swing fulcrum. When pushed out and discharged from the inspection port 26, the grains are pushed out in a direction along the inclination direction of the open lid 27, and the grains are smoothly discharged.

[Another embodiment]
(1) In the above-described embodiment, the lid body 27 including the lid side plate portion 27d is used. However, a flat lid body without the lid side plate portion 27d may be used.

(2) In the above-described embodiment, an example is shown in which the lid body 27 has the axis P2 provided at the upper end of the bottom screw 22 in the conveying direction of the lid body 27 as the swing fulcrum. The lid 27 may be implemented by adopting a lid having a swing fulcrum at an axis provided at the end of the bottom screw 22 on the downstream side in the conveying direction.

(3) In the above-described embodiment, an example is shown in which the inspection port 26 is biased toward the side where the threshing discharge device 12 is located with respect to the central portion of the bottom screw 22 in the conveying direction of the bottom portion 20a. It may be provided at the center of the bottom screw 22 in the conveying direction of the bottom portion 20a. Further, it may be provided in a state of being biased to the side opposite to the side where the grain threshing discharge device 12 is located with respect to the central portion of the bottom screw 22 in the conveying direction in the bottom portion 20a.

(4) In the above embodiment, the lid 27 is provided with the inner lid portion 27b, but the inner lid portion 27b may be omitted.

The present invention is not limited to front wheels and rear wheels, and can be applied to a combine having a crawler type traveling device or a traveling device in which wheels and mini crawlers are combined.

7 harvesting unit 10 threshing device
10t top plate
11 threshing tank 12 threshing discharge device 20 lower narrowed portion 20a bottom portion 20b side plate portion 20S inner surface 22 bottom screw 26 inspection opening 27 lid 27a outer lid portion 27b inner lid portion 27c lid bottom plate portion 27d lid side plate portion 27S inner surface 28 hinge Member 29 Connecting shaft 31 Locking mechanism 31a Screw shaft 31b Nut tool 32 Long hole

Claims (4)

a threshing device for threshing the crops harvested by the harvesting unit;
a threshing tank that stores threshed grains obtained by the threshing device and that is provided above the threshing device with a bottom tapered portion formed in the bottom;
a bottom screw extending along the width direction of the machine body inside the lower tapered portion for discharging threshing grain from the threshing tank;
a threshing discharge device connected to the bottom screw for conveying threshed grains from the bottom screw and discharging them out of the machine body;
A top plate having a cross-sectional shape that bulges upward when viewed along the longitudinal direction of the machine body is provided on the upper part of the threshing device,
The threshing tank is provided with an inspection opening opened at the bottom portion of the lower tapering portion, and a lid for opening and closing the inspection opening,
The lid body is a combine harvester that opens and closes by swinging up and down in an empty space between the bottom portion and the top plate with an axis non-parallel to the screw axis of the bottom screw as a swing fulcrum. . a threshing device for threshing the crops harvested by the harvesting unit;
a threshing tank that stores threshed grains obtained by the threshing device and has a bottom portion that tapers downward;
a bottom screw provided inside the lower constricted portion for discharging threshing grains from the threshing tank;
a threshing discharge device connected to the bottom screw for conveying threshed grains from the bottom screw and discharging them out of the machine body;
The threshing tank is provided with an inspection opening opened at the bottom portion of the lower tapering portion, and a lid for opening and closing the inspection opening,
The lid body is opened and closed by vertical rocking with an axis non-parallel to the screw axis of the bottom screw as a rocking fulcrum,
The lid body includes a lid bottom plate portion and a pair of lid side plate portions rising from both lateral end portions of the lid bottom plate portion,
The pair of lid side plate portions is inclined such that the interval between the lid side plate portions increases toward the upper end of the lid side plate portion, and along the side plate portions of the lower tapering portion ,
an inner lid part that enters the inspection opening in the closed state of the lid body and makes the inner surface of the lid bottom plate part and the inner surface of the bottom part flush with each other; and the bottom part around the inspection opening. and an outer lid portion that abuts on the outer surface of the
A hinge member is provided across the lid bottom plate portion and the bottom portion, and supports the lid body on the lower tapered portion so that the lid body can be opened and closed by swinging,
a connecting shaft connecting the hinge member to the bottom portion protrudes outward from the bottom portion;
A locking mechanism for fixing the lid in a closed state includes a screw shaft projecting outward from the lower tapered portion, an elongated hole formed in the lid side plate portion, and an elongated hole inserted through the elongated hole. and a nut tool fastened to the screw shaft . The combine according to claim 1 or 2 , wherein the shaft core is provided at an end portion of the lid body on the upper side in the conveying direction of the bottom screw. 4. The combine according to any one of claims 1 to 3 , wherein the inspection opening is biased toward the side where the threshing discharge device is located with respect to the central portion of the bottom screw in the conveying direction of the bottom portion. .

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