JP7039445B2 - combine - Google Patents

Description

The present invention provides, in detail, a threshing unit for threshing a harvested product and a grain transporting device for transporting grains obtained by threshing the harvester in the threshing section. The apparatus is provided with a horizontal transport section for transporting grains in the horizontal direction and a vertical transport section for transporting grains delivered from the transport end portion of the horizontal transport section upward. A horizontal transport screw and a horizontal transport peripheral wall portion that covers the periphery of the horizontal transport screw are provided, and the vertical transport portion includes a vertical transport screw and a vertical transport peripheral wall portion that covers the periphery of the vertical transport screw. Regarding the combine that has been harvested.

In the above combine, conventionally, the rotary shaft core of the horizontal transport portion and the rotary shaft core of the vertical transport portion are located on the same virtual plane and have a positional relationship such that they overlap at one point. The bevel gears attached to the shaft end of the rotating shaft and the shaft end of the rotating shaft of the vertical transport portion are engaged with each other and interlocked and connected. The grains transported by the horizontal transport section are scraped upward by a plate-shaped blade provided at the transport end of the horizontal transport section, and are vertically transported via an elbow-shaped relay transport case. Each bevel gear is configured to be guided toward the transport start end portion of the section, and each bevel gear is housed in a gear storage case provided inside the relay transport case (see, for example, Patent Document 1). ..

Japanese Unexamined Patent Publication No. 2011-177077

In the above-mentioned conventional configuration, the grains transported by the horizontal transport section pass through the relay transport case, pass through the transport area in the inclined posture, and are fed to the vertical transport section while being phased diagonally upward. When the grains are delivered to the vertical transport section in this way, they are sent from a low position to a high position, so that some grains may flow back to the horizontal transport section. As a result, the grains stay in the delivery area and the pressure increases, and the inner surface of the relay transport case is pressed by the grains and is worn out after a short period of use.

Therefore, it has been desired that the grains can be smoothly transported without staying, and that the inner surface of the transport passage through which the grains flow does not wear in a short period of time.

The characteristic configuration of the combine according to the present invention includes a threshing section for threshing the harvested product and a grain transport device for transporting the grains obtained by the threshing process at the threshing section. The apparatus is provided with a horizontal transport section for laterally transporting grains and a vertical transport section for transporting grains delivered from the transport end portion of the horizontal transport section upward. A horizontal transport screw and a horizontal transport peripheral wall portion that covers the periphery of the horizontal transport screw are provided, and the vertical transport portion includes a vertical transport screw and a vertical transport peripheral wall portion that covers the periphery of the vertical transport screw. In the connecting portion between the horizontal transport portion and the vertical transport portion, the rotary shaft core of the horizontal transport screw and the rotary shaft core of the vertical transport screw are displaced along the radial direction of the horizontal transport portion. The horizontal transfer screw and the vertical transfer screw are provided in a state where the outer end rotation loci of the respective transfer screws overlap each other without interfering with each other , and the lateral transfer peripheral wall portion of the horizontal transfer peripheral portion is provided. The lower portion of the horizontal transport screw and the overlapping region where the outer end rotation loci of the vertical transport screw overlap is provided in an inclined shape so that the horizontal transport portion side is at a high position and the vertical transport portion side is at a low position. The upper portion of the horizontal transport peripheral wall portion in the overlapping region is provided in an inclined shape so that the horizontal transport portion side is at a low position and the vertical transport portion side is at a high position .

According to the present invention, the rotary shaft core of the horizontal transport screw and the rotary shaft core of the vertical transport screw intersect in a state of being displaced along the radial direction of the horizontal transport portion. As a result, the grains transported by the horizontal transport section are not sent out in the extension direction of the rotary shaft core at the connecting portion with the vertical transport section, but are outward in the radial direction of the horizontal transport screw. It will be sent out toward. Moreover, since the lateral transport screw and the vertical transport screw are in a state where the outer end rotation loci overlap, the grains are satisfactorily moved from the horizontal transport screw to the vertical transport screw in a state where there is no risk of backflow or the like. Grains can be handed over, and there is little risk that the inner surface of the transport passage through which the grains flow will wear in a short period of time.

Therefore, the grains can be smoothly transported without staying, and the inner surface of the transport passage through which the grains flow can be prevented from being worn in a short period of time.

Further, the grains that have been laterally transported by the cooperation of the lateral transport screw and the lateral transport peripheral wall portion in the lateral transport portion are vertically transported by the lower portion of the lateral transport peripheral wall portion provided in an inclined shape at the connecting portion. It is guided down toward the department side.

Therefore, since the grains transported laterally by the lateral transport section are guided down as they are by the lateral transport peripheral wall portion, the grains can be delivered more satisfactorily.

In the present invention, the lateral transport peripheral wall portion is such that the lateral transport portion side is at a high position and the vertical transport portion side is at a low position at the lower portion even at a position on the upper side in the transport direction from the overlapping region . It is preferable that the surface is provided in an inclined shape.

According to this configuration, in the horizontal transport section, the grains can be guided downward from an early stage up to the connecting section, and the grains can be reliably delivered to the vertical transport section without any delay. Can be handed over.

In the present invention, it is preferable that the lateral transport screw is rotationally driven in the connecting portion in a direction in which grains are fed out along the inclined peripheral surface of the lateral transport peripheral wall portion.

According to this configuration, the horizontal transport screw can exert a function of feeding out grains along the inclined peripheral surface of the horizontal transport peripheral wall portion as it rotates, and the grain is better transferred to the vertical transport section. Can be handed over to.

In the present invention, it is preferable that the transport start end position of the vertical transport portion is set at a position lower than the lowermost end position of the overlapping region in the horizontal transport peripheral wall portion.

According to this configuration, the vertical transport section can exert a transport action without leakage for grains transported by the horizontal transport section and sent out toward the vertical transport section by the connecting section. It is possible to transport grains satisfactorily without staying.

It is an overall side view of a combine. It is the whole plan view of a combine. It is a partial notch front view of a grain transporting apparatus. It is a vertical sectional side view of the grain transporting apparatus. It is a perspective view of a relay transport case. It is a perspective view which shows the support structure of a support.

Hereinafter, embodiments of the combine according to the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is "front side" (see FIGS. 1 and 2), the direction of arrow B is "rear side" (see FIGS. 1 and 2), and the direction of arrow L is "left side". (See FIG. 2), the direction of the arrow R is "right side" (see FIG. 2).

〔overall structure〕
FIGS. 1 and 2 show an ordinary combine harvester targeting rice, wheat, etc. as an example of the combine according to the present invention. This combine is equipped with a traveling machine equipped with a pair of left and right crawler type traveling devices 2 at the lower part of the machine frame 1, and the planted culm to be harvested is cut and transported backward to the front part of the traveling machine. The harvesting transport unit 3 is connected so as to be able to swing up and down around the horizontal axis. A threshing device 4 and a threshing unit as a threshing unit that performs a handling treatment on the cut grain slab from the cutting and transporting unit 3 and a sorting treatment on the threshing processed product obtained by the handling treatment on the machine frame 1. The grain tank 5 for storing the grains from the device 4, the grain transfer device 6 for transporting the grains obtained by the threshing device 4 to the grain tank 5, and the grains stored in the grain tank 5 are used as machines. It is provided with a grain discharging device 7 for discharging to the outside, a driving unit 8 for the operator to board and operate, and the like.

The driving unit 8 is located on the right side of the front portion of the machine body, and the grain tank 5 is located behind the driving unit 8. The threshing device 4 is located on the left side, the grain tank 5 is located on the right side, and the threshing device 4 and the grain tank 5 are arranged side by side in the left-right direction. An engine 9 for driving is provided on the lower side of the driving unit 8, and the power of the engine 9 is transmitted to each unit.

The harvesting and transporting unit 3 separates the planted culms into the planted culms to be harvested and the planted culms not to be harvested as the aircraft travels. A rotary reel 11 that scrapes toward the rear, a varican-shaped reaping device 12 that cuts the stock root side of the planted culm to be harvested, and a rearward that gathers the cut culm after cutting at a predetermined position on the center side in the left-right direction. It is configured to include a horizontal feed auger 13 that feeds toward the grain, a feeder 14 that transports the harvested culm toward the grain removal device 4, and the like. The cutting and transporting unit 3 is supported by a hydraulic cylinder (not shown) so as to be able to move up and down around the horizontal axis.

Although not described in detail, the threshing device 4 is provided with a handling chamber on the upper side of the internal space for handling and processing the harvested grain culms carried from the feeder 14 by a handling cylinder that rotates around the front-rear axis. Below the chamber, there is a sorting unit that sorts the processed products into grains, second products, waste straw waste, and the like.
The selected grains are guided to fall to the bottom inside the threshing device 4, and are transported toward the grain tank 5 by the grain transport device 6 and stored. The second product is reduced to the inside of the threshing device 4, and the waste straw waste and the like are discharged to the outside on the rear side of the machine. After the cutting work is completed, the grains stored in the grain tank 5 are discharged to the outside of the machine by the grain discharging device 7.

As shown in FIGS. 1 and 2, the bottom of the grain tank 5 is provided with a bottom screw 15 for sending the stored grains to the rear and outward. A grain discharging device 7 is provided which transports the grains sent out from the lower part of the grain tank 5 by the bottom screw 15 and discharges them to a discharge point (not shown) outside the machine body.

The grain discharge device 7 is formed on a vertical screw conveyor 16 that transports grains laterally sent out laterally from the bottom screw 15 upward, and from the transport end portion to the tip portion of the vertical screw conveyor 16. A horizontal screw conveyor 18 for horizontally transporting grains to the discharge port 17 is provided.

The vertical screw conveyor 16 is provided with a vertical transfer screw 20 inside a cylindrical outer cylinder case 19, and grains can be conveyed upward by rotating the vertical transfer screw 20. Further, the vertical screw conveyor 16 supports the horizontal screw conveyor 18 in a cantilevered manner, and is supported so as to be integrally rotatable around the vertical axis core Y.

A rotation holding portion 21 that rotatably holds around the vertical axis core Y while slidingly guiding the upper and lower intermediate portions of the vertical screw conveyor 16 is provided, and the rotation holding portion 21 is erected from the machine frame 1. It is connected to the support column 22. The support column 22 is formed in a square cylinder shape, and is erected from the machine frame 1 in a state of extending upward to a place where the rotation holding portion 21 is located at a position behind the machine body with respect to the vertical screw conveyor 16. ..

The grain tank 5 is rotatably supported around the vertical axis core Y with respect to the vertical screw conveyor 16 by a sliding support portion 23 or the like on the upper side. The grain tank 5 spans a normal working posture (see FIG. 2) arranged side by side of the threshing device 4 and a maintenance posture (not shown) in which the front side of the machine is rotated so as to project outward on the side of the machine. , Is rotatably provided. As a result, a lateral load may be applied to the support column 22 for supporting the vertical screw conveyor 16, and stress may be generated at the connection point with the machine frame 1.

Therefore, the connecting portion of the support column 22 to the machine frame 1 is reinforced by a plurality of reinforcing members 25. As shown in FIG. 6, the support base 22 is welded and fixed to the lower end portion of the support base plate 24 for connection. Reinforcing members 25a and 25b having a single plate structure are fixed by welding between the base plate 24 and the front side surface of the support column 22 and between the base plate 24 and the rear side surface of the support column 22, respectively. .. A reinforcing member 25c made of a substantially U-shaped plate in a plan view is fixed by welding over the base plate 24 and the left side surface of the support column 22, and a substantially U-shaped plate body in a plan view extends over the right side surface of the base plate 24 and the support column 22. A reinforcing member 25d made of the above is fixed by welding. These four reinforcing members 25a to 25d increase the support strength of the support column 22 in the left-right direction and the front-rear direction to increase the frame rigidity.

[Grain carrier]
Next, a grain transporting device 6 for transporting the grains obtained by the threshing device 4 to the grain tank 5 will be described.
As shown in FIGS. 1, 2, and 3, the grain transporting device 6 is provided with a first collecting section 26 as a horizontal transport section and a grain lifting device 27 as a vertical transport section. The first collection unit 26 is provided at the bottom of the threshing device 4, receives grains guided to fall to the bottom inside the threshing device 4, and conveys the grains to the outside on one side of the threshing device 4. .. After being transported to the outside on one side of the threshing device 4, it is transported upward by the grain lifting device 27 and stored in the grain tank 5.

As shown in FIGS. The guide gutter section 30 is provided. The first recovery screw 28 is provided so as to extend along the left-right direction. The first collection unit 26 is provided at the bottom of the threshing device 4 in a state of extending along the left-right direction, collects the grains sorted and dropped inside the threshing device 4, and collects the first collection screw 28 and the guide gutter unit. In cooperation with 30, the grain is transported laterally and outwardly. The first recovery screw 28 is provided so as to project outward on the right side through an opening 31 formed in the side wall 4a of the threshing device 4.

As shown in FIG. 4, the grain lifting device 27 is provided with a vertical transport screw 32 and a cylindrical vertical transport case 34 constituting a vertical transport peripheral wall portion 33 that covers the periphery of the vertical transport screw 32. There is. The transport upper side of the vertical transport screw 32 is composed of a screw having a double helix structure, and the transport lower side is composed of a general screw having a single spiral structure. The upper end of the grain lifting device 27 is provided with a discharging section 35 for discharging the transported grains and carrying them into the grain tank 5.

The connecting portion 36 between the first collecting portion 26 and the grain lifting device 27 is covered with a relay transport case 37. As shown in FIGS. It is provided with a cover portion 37B for vertical feed to cover the above. The lateral feed covering portion 37A constitutes a part of the lateral transport peripheral wall portion 29. The vertical feed covering portion 37B constitutes a part of the vertical transport peripheral wall portion 33.

The lateral end of the lateral feed cover 37A of the relay transport case 37 and the side wall 4a of the threshing device 4 in which the opening 31 is formed are connected by a lateral cylindrical connection case 38. The connection case 38 covers the periphery of the outward protrusion of the first recovery screw 28, and constitutes a part of the lateral transport peripheral wall portion 29 of the first recovery screw 28. A vertical transport case 34 is connected to the upper end of the vertical feed cover portion 37B of the relay transport case 37.

In the connecting portion 36 between the first collecting portion 26 and the grain lifting device 27, the rotating shaft core X1 of the first collecting screw 28 and the rotating shaft core X2 of the vertical transport screw 32 are in the radial direction of the first collecting portion 26. The recovery screw 28 and the vertical transfer screw 32 are provided in a state where the outermost rotation loci of the transfer screws 28 and 32 overlap each other without interfering with each other. ..

The first recovery screw 28 is rotationally driven by transmitting the power of the engine 9 to the end on the side (left side) opposite to the side where the grain lifting device 27 is provided via a transmission mechanism (not shown). Then, power is transmitted from the right end of the first recovery screw 28 to the vertical transfer screw 32 via the transmission mechanism 39. The transmission mechanism 39 is configured to include a plurality of bevel gears 40, a transmission chain 41, and the like, and is provided in a state of being housed in a transmission case 42 supported on the lateral side of the relay transfer case 37.

Since the first recovery screw 28 and the vertical transfer screw 32 are interlocked and connected in a synchronized state via the transmission mechanism 39, by setting the rotational state, they are deployed in a partially overlapping state as described above. However, they can be deployed so that they do not interfere with each other. By providing the first recovery screw 28 and the vertical transport screw 32 in a partially overlapping state in this way, the grains laterally fed by the first recovery screw 28 are quickly and reliably vertically transported. It is handed over to the screw 32.

As shown in FIG. 4, the lower portion of the lateral transport peripheral wall portion 29 corresponding to the connecting portion 36, that is, the most recoverable screw 28 and the vertical portion of the lateral feed covering portion 37A of the relay transport case 37. The lower portion 43a of the overlapping region 43 that overlaps with the transport screw 32 is provided in an inclined shape so that the collecting portion 26 side is at the highest position and the grain lifting device 27 is at the lower position.

To add an explanation, the upper portion 43b of the overlapping region 43 of the lateral feed covering portion 37A is formed in an arc shape along the outer periphery of the recovery screw 28. The lower portion 43a of the overlapping region 43 of the lateral feed covering portion 37A is formed on a downward inclined surface so as to extend continuously to the upper portion 43b formed in an arc shape and become a lower position as it approaches the vertical transport screw 32. Has been done.

The first recovery screw 28 is rotationally driven in the connecting portion 36 in a direction in which grains are sent out along the inclined peripheral surface in the lower portion 43a of the overlapping region 43 of the relay transport case 37. That is, as shown in FIGS. 3 and 4, they are driven so as to rotate clockwise when viewed from the right side. The first recovery screw 28 acts so that the outer peripheral end portion rotates from the upper end side to the lower portion of the overlapping region 43 to deliver and guide the grains to the grain lifting device 27 side. By rotating the first recovery screw 28 in this way, the grains are smoothly delivered to the grain lifting device 27. On the other hand, as shown in FIGS. 3 and 4, the vertical transfer screw 32 is driven in a state of rotating counterclockwise in a plan view.

Then, as shown in FIG. 4, the grain lifting device 27 is a portion of the lateral transport peripheral wall portion 29 corresponding to the connecting portion 36, that is, the lowermost end of the lower portion 43a of the overlapping region 43 of the relay transport case 37. The transport start position is set from a position lower than the position. As an explanation, the vertical feed covering portion 37B of the relay transport case 37 extends downward from the lower end portion of the inclined surface in the lower portion 43a of the overlapping region 43, and the vertical feed cover portion of the relay transport case 37 extends downward. The vertical transport screw 32 is configured to transport from the vicinity of the lower end portion of the 37B.

[Another Embodiment]
( 1 ) In the above embodiment, the lower portion 43a of the overlapping region 43 of the lateral feed covering portion 37A in the relay transport case 37 is located at the highest position on the recovery portion 26 side and at the lower position on the vertical transport screw 32 side. In addition to this configuration, the upper region 44 excluding the overlapping region 43 is also configured so as to be inclined so that the lower portion thereof is the most collecting portion 26 side, as in the overlapping region 43. It may be provided in an inclined shape so as to be at a high position and the vertical transfer screw 32 side is at a low position. That is, the lateral feed covering portion 37A is provided in an inclined shape so that the lower portion over the entire region in the transport direction is at the highest position on the recovery portion 26 side and the lower position on the grain lifting device 27 side. May be.

( 2 ) In the above embodiment, the first recovery screw 28 is rotationally driven in the connecting portion 36 in the direction of feeding the grains along the inclined peripheral surface of the lateral transport peripheral wall portion 29. The rotation direction is not limited to this, and may be rotated in any direction.

( 3 ) In the above embodiment, the grain lifting device 27 is configured such that the transport start end position is set at a position lower than the lowermost end position of the overlapping portion 43 of the lateral transport peripheral wall portion 29, but the present invention is limited to this. Instead, the transport start end position may be set at the same position as the lowermost end position, or the transport start end position may be set at a position higher than the lowest end position.

(5) In the above embodiment, as the grain transport device, the one provided with the first collecting unit and the grain frying device for transporting the threshed grains to the grain tank 5 is shown. Alternatively, it may be applied to a connecting portion between the bottom screw 15 and the vertical screw conveyor 16 in the grain discharging device 7, and the target is not limited.

The present invention can be applied to various types of combine harvesters such as ordinary combine harvesters and head-feeding combine harvesters.

4 Threshing part 6 Grain transfer device 26 Horizontal transfer part 27 Vertical transfer part 28 Horizontal transfer screw 29 Horizontal transfer peripheral wall part 32 Vertical transfer screw 33 Vertical transfer peripheral wall part 36 Connecting part
43 Overlapping area
43a lower part
43b upper part

Claims (4)

It is provided with a threshing section for threshing the harvested product and a grain transporting device for transporting the grains obtained by the threshing process at the threshing section.
The grain transport device is provided with a horizontal transport section for transporting grains in the lateral direction and a vertical transport section for transporting grains delivered from the transport end portion of the horizontal transport section upward.
The lateral transport portion is provided with a lateral transport screw and a lateral transport peripheral wall portion that covers the periphery of the lateral transport screw.
The vertical transport portion is provided with a vertical transport screw and a vertical transport peripheral wall portion that covers the periphery of the vertical transport screw.
In the connecting portion between the horizontal transport portion and the vertical transport portion, a state in which the rotary shaft core of the horizontal transport screw and the rotary shaft core of the vertical transport screw are displaced along the radial direction of the horizontal transport portion. The horizontal transfer screw and the vertical transfer screw are provided in a state where the outer end rotation loci of the respective transfer screws overlap each other without interfering with each other.
The lower portion of the horizontal transport peripheral wall portion in the overlapping region where the outer end rotation loci of the horizontal transport screw and the vertical transport screw overlap is a position where the horizontal transport portion side is high and the vertical transport portion side is low. It is provided in a slanted shape so that
The upper portion of the horizontal transport peripheral wall portion in the overlapping region is a combine that is provided in an inclined shape so that the horizontal transport portion side is at a low position and the vertical transport portion side is at a high position . The horizontal transport peripheral wall portion is provided in an inclined shape so that the horizontal transport portion side is at a high position and the vertical transport portion side is at a low position even at a position on the upper side in the transport direction from the overlapping region . The combine according to claim 1 . The combine according to claim 1 or 2 , wherein the horizontal transport screw is rotationally driven in the connecting portion in a direction in which grains are fed out along the inclined peripheral surface of the horizontal transport peripheral wall portion. The combine according to any one of claims 1 to 3 , wherein the vertical transport portion has a transport start end position set at a position lower than the lowermost position of the overlapping region in the horizontal transport peripheral wall portion.

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