JP2020178608A - General-purpose combine - Google Patents

Abstract

To provide a general-purpose combine that is configured to scoop toward a feeder house side with a retractable scooping plate on a termination side of feeding direction in a scooping auger, thus reducing winding of straws concentrated at an inlet part of the feeder house and ensuring scooping actions.SOLUTION: The present invention relates to a scooping auger (7) for receiving reaped culms and transporting the culms to a one lateral side, and scooping them into a feeder house (10). The scooping auger (7) is provided with a retractable scooping plate (21) with an offset phase in a portion corresponding to a feed conveyor (11) in the feeder house on a feeding termination side of the scooping auger.SELECTED DRAWING: Figure 2

Description

The present invention relates to a general purpose combine equipped with a scraping auger that scrapes a stalk crop after cutting.

Conventionally, in the scraping auger of a general-purpose combine, a rod-shaped infestation type scraping auger and a large number of rod-shaped projecting pieces at intervals in the axial center direction are located at the portion corresponding to the feeder house on the end side of the feeding direction of the scraping auger. Is known to be provided with a fixed type scraping body formed in a comb shape by projecting (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-101101

In the above-mentioned conventional configuration, the straw is wrapped around the scraping auger drum, and in particular, the comb-shaped fixed scraping body tends to wind the straw, which causes a problem that the comb-shaped scraping body and the rod-shaped scraping finger are damaged. ..

According to the present invention, in the scraping auger, the wrapping of straw concentrated at the entrance portion of the feeder house is reduced and scratched by configuring the scraping auger so as to scrape the straw toward the feeder house side with a retractable scraping plate at the end side in the feeding direction. The purpose is to ensure the inclusion action.

The present invention has taken the following technical measures to solve the above problems.

That is, according to the first aspect of the present invention, in the scraping auger (7) that receives the stalk culm after cutting, transports it to one side horizontally, and scrapes it into the feeder house (10), the feed end side of the scraping auger. It is characterized in that a retractable culm plate (21) having a phase shift is provided at a portion corresponding to the feed conveyor (11) in the feeder house.

The present invention according to claim 2 is characterized in that, in claim 1, the scraping plate (21) has a predetermined width in the axial core direction.

According to the third aspect of the present invention, in claim 1 or 2, a part of the scraping plate and an end portion of the transport racen (18) of the scraping auger (7) are overlapped in the axial direction. It is characterized by being.

The present invention according to claim 4 is characterized in that, in claim 1 or 2, or 3, the scraping plate (21) is provided with a cutting edge (22) at a tip end portion.

In short, according to the first aspect of the present invention, since the indentation type scraping plate is used, the straw on the indentation drum can be formed like a fixed comb-shaped scraping body or a infesting rod-shaped scraping finger. Wrapping can be prevented and accidental damage will not occur.

According to the second aspect of the present invention, in addition to the effect according to the first aspect, since the suction plate is configured to have a predetermined width in the axial direction, the suction action on the feed conveyor Can be done reliably.

According to the third aspect of the present invention, in addition to the effect according to the first or second aspect, the end of the transfer spiral of the suction auger is in a position of overlapping with the suction plate. The transfer from the spiral to the scraping plate can be performed well, and the stem culm inherited by the scraping plate can be reliably scraped into the feed conveyor.

According to the fourth aspect of the present invention, in addition to the effect according to claim 1, claim 2 or claim 3, by providing a cutting edge at the tip of the scraping plate, the scraping plate is retracted. The straw wrapped around the drum when it sticks out can be cut.

Side view of general-purpose combine Same as above Top view of the main part Top view of the scraping auger Same as above Top view where a part of the main part can be broken S1-S sectional view of FIG. Side view of the main part of the feed conveyor Side view of the main part of the feed conveyor Floor plan of feeder house Side sectional view of feeder house and feed conveyor Side view of the main part of the threshing department Front view of the main part of the threshing section Same as above Partial plan view Power transmission mechanism diagram of the main part of the general-purpose combine Cross-sectional view of the main part showing the reversing mechanism Top view of the main part of the scraping reel Same as above Top view of the main part Top view of the main part of the scraping auger Same as above Side view of the main part Top view of the main part of the threshing section Cross-sectional view of the main part of the threshing section

Examples of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a general-purpose combine that cuts and harvests crop culms such as rice and rapeseed that grow up in the field while running on its own, and is provided with a pair of left and right running culms 2 and 2 at the bottom. On the front side of the vehicle body 1, there is a scraping reel 4 that scrapes the crop culm planted by the weeding tool 3 to the rear, a variable can type horizontal cutting blade device 5 that cuts the stalk after scraping, and after cutting. The pre-cutting processing unit 8 including a scraping auger 7 or the like for scraping the stalk culm onto the table 6 is provided.

In the feeder house 10 equipped from the left side to the rear of the pre-cutting processing unit 8, the feed conveyor 11 that inherits the crop culm from the pre-cutting processing unit, lifts and transports it rearward and upward, and supplies it into the threshing unit 9. Is equipped.

On the right side of the feeder house 10, a driving operation unit including a driver's seat 12 and an operation box 13 is installed, and a grain tank 14 for temporarily storing the harvested product is installed behind the driving operation unit. When the harvested product in the grain tank 14 is full, it is discharged to the outside of the machine by the discharge auger 15.

The scraping auger 7 is composed of an auger drum 17, a transport spiral 18 wound around the outer circumference of the auger drum, a crank finger 19 that scrapes the stalk after cutting, and the like, and rotates about the rotation shaft 20. It has become.

Then, at the part corresponding to the feed conveyor 11 of the feeder house 10 of the scraping auger 7, the cutting culm taken in from the front side and the stalk culm sent by the transport spiral are placed at the start end of the feed conveyor on the rear side. A haunting type scraping plate 21 for scraping is provided.

The scraping plates 21 are arranged so as to be out of phase in the direction of the center of rotation axis, and are provided at three locations having an equal distribution of 120 degrees. Moreover, it is configured to have a wide width so as to have a predetermined width in the axial core direction, and is configured to be retractable so as to be retracted inward of the drum or protruded outward of the drum.

In addition, a part of the scraping plate 21 and the terminal end of the transport spiral 18 overlap in the L range in the axial direction, so that the stalk feeding action can be successfully inherited to the scraping action. ing.

A sharp cutting edge 22 is provided at the tip of the scraping plate 21, and when protruding from the auger drum 17, the straw wrapped around the auger drum is cut and separated. Further, the scraping plate 21 is hardened together with the cutting blade 22 to improve wear resistance.

Next, another embodiment will be described. As shown in FIG. 6, by providing the feed slat 24 of the feed conveyor 11 with a receding angle (θ), the rotation of the culm can be reduced and the transfer to the threshing portion can be performed satisfactorily.

Further, as shown in FIG. 7, 24a1 having a receding angle and 24a2 having no receding angle (squareness) may be alternately arranged on the feed slats 24.

The inspection window 25 on the upper surface of the feeder house 10 can be improved in cleaning and maintainability by connecting two front and rear parts to one and increasing the size in the front-rear direction (see FIG. 8). The lid of the inspection window is divided into two parts, front and back.

When the inspection window 25 is widened in the front-rear direction as shown in FIGS. 8 and 9, it is desirable to connect the left and right side plates 27L and 27R to the central portion with the reinforcing pipe 26 to reinforce the inspection window 25.

In the cutting clutch mechanism of a general-purpose combine, conventionally, the cutting input belt of the general-purpose combine is located between the right side of the feeder house and the driver's seat, and there is a problem that it is difficult to replace the belt. As shown in FIGS. 10 and 11, the cutting clutch wire cable 28 is connected to the left arm tension clutch 29 through the cutting clutch lever on the driver's seat 12 side and the upper side of the threshing portion 9, so that adjustment work can be easily performed. Maintenance has become easier. The arm tension 29 is attached through the bearing portion of the holder.

Further, the wire cable 28 is passed through the cover 30 on the upper side of the threshing portion so as not to be affected by mud during wetland work.

Further, by attaching the wire cable 28 to the left side of the body of the reinforcing rib 32 (see FIG. 12) of the attachment stay 31, the space is wide during the adjustment work and the work can be easily performed. Further, the mounting stay 31 is configured to be mounted on the U-shaped plate 33 welded to the machine wall of the threshing portion.

If the wire cable 28 is attached by passing it from the upper side of the attachment stay 31, the wire cable 28 can be adjusted even while standing, and the work is easy.

As shown in FIG. 11, the wire cable attachment portion of the arm tension 29 can be arranged in the gap between the threshing portion and the pulley by providing the bent portion 34, which saves space.

In a general-purpose combine having a cutting reversal mechanism, as shown in FIG. 13, a belt is attached to the cutting input pulley 36 on the forward rotation side (left side, conventionally input from the right side) from the engine E via the threshing counter shaft 35 and the cutting tension clutch K1. The rotation of the feed conveyor 11 that is scraped from the scraping auger 7 is input in the forward rotation direction. Further, the belt is transmitted from the engine E to the reverse side (right side) drive pulley 38 via the handling cylinder drive shaft 37 and the tension clutch K2, and the feed conveyor 11 is reversed via the reverse rotation mechanism 39. ing. Then, as shown in FIG. 14, the reversing mechanism 39 includes a drive gear 40 fixed to the drive pulley 38 shaft and a slideable reversing gear 41, and when the reversing gear 41 slides and meshes with the drive gear 40, the reversing mechanism 39 reverses. However, the feed conveyor 11 is adapted to switch in the reverse direction. The sliding operation of the reversing gear 41 can be configured so that it can be performed by the cutting input lever. Further, when the gear is operated to the reverse side with the cutting input lever, the accelerator lever can be configured to move in the direction in which the engine rotation decreases.

If a spring 42 is provided between the arm that slides the reverse gear 41 and the wire, the gear can be reliably meshed.

A general-purpose combine harvester having a feeding reel, a cutting blade device, and a table with an auger drum arranged in front of the pre-cutting section and a feed conveyor for transporting the harvester to the threshing section. As shown in FIG. 15, the reel arm 43 The rear end rotation fulcrum cylinder 44 is supported by bearing portions G1, G2, G3, G4 at a plurality of locations at the upper rear end of the table, and the left and right arms 43, 43 are supported so as to be vertically movable at the same time. In the reel arm of the above, when the reinforcing connecting member 45 is diagonally fixed to the corners of the left and right arms 43, 43, the reinforcing connecting member 45 is connected at a position past at least two bearing portions from the end of the fulcrum cylinder 44.

Since the conventional reinforcing member is only located past the bearing portion at one end of the fulcrum cylinder, bending and torsional stress are likely to be strongly applied to the end end portion of the reinforcing member, and the durability is poor. As in the example, since the reinforcing member is extended from the end of the fulcrum tube to the tip of at least two bearings, stress is relaxed and durability can be ensured without the need for a special member.

Further, as shown in FIG. 16, by reinforcing and connecting the horizontal members 46 between the left and right oblique reinforcing connecting members 45 and 45 in the vicinity of the fulcrum cylinder 44, the load is dispersed, left and right twisting is less likely to occur, and the reel Performance is stable and durability is also good.

Further, in the example of FIG. 16, since the headlight 47 is provided on the horizontal member 46, the left and right positions can be freely determined, and the work portion can be optimally irradiated.

The examples shown in FIGS. 17 and 18 relate to a scraping auger. A spiral plate 18 is wound around an auger drum 17, and a reinforcing plate 48 is appropriately fixed on the non-feeding side of the spiral plate 18. When installing, the reinforcing plate pitch is wide on the transfer start end side, and the reinforcing plate pitch is narrow near the end side of the feed conveyor side.

Due to the feeding of crops, the amount of accumulation in the spiral increases toward the end of the feed, and the load increases. Therefore, if the spiral strength is uniform, the durability such as deformation becomes poor. By narrowing the pitch of the spiral reinforcement near the start end of the feed conveyor as in the above example, it becomes possible to withstand a large load and the durability is improved.

In addition, when the reinforcing plate is fixed to the non-feed side of the spiral plate, the spiral plate wound around the drum is wound about 3 times, but from the table end (drum end) to the inside (feed conveyor side). The pitch of the reinforcing plate 48 was set so that the angle pitch became 3 steps (for example, about 90 degrees → about 45 degrees → about 30 degrees) from the 1st lap → the 2nd lap → the 3rd lap. Even with the configuration, the strength balance of the auger drum can be optimized and the durability is improved.

In the threshing section of a general-purpose combine having an axial flow type cylindrical handling cylinder 51 on which the bar tooth 50 is fixed, a receiving net is provided on the lower side of the handling cylinder 51, and a semi-cylindrical roof portion 52 is provided on the upper side of the handling cylinder. A plurality of arc-shaped dust feeding guides 53 are provided inside the cylindrical roof portion 52 so as to surround the cylindrical roof portion 52 so that the lower portion approaches the rotation locus of the bar tooth and the upper portion is fixed to the roof side. Then, each dust feeding guide is configured so that the angle can be changed (see FIGS. 19 and 20).

Since the combine of the conventional cylindrical handle roof cannot be adjusted by fixing the dust feed guide to the cylinder with bolts, it cannot be adjusted by giving resistance to the handling chamber and improving the shedding property. According to this example, the dust feeding performance of the cylindrical handling cylinder is not lost, resistance can be added, and the threshing performance is improved.

Further, a part of the top of the semi-cylindrical roof portion 52 is flattened, and the flat portion 54 is provided with a rotating fulcrum shaft 55 for changing the angle of the dust feeding guide and an adjusting lever 56.

6 Table 7 Scraping auger 10 Feeder house 11 Feed conveyor 17 Organ drum 18 Transport spiral 20 Rotating shaft 21 Scraping plate 22 Cutting blade

Claims (4)

In the scraping auger (7) that accepts the culm after cutting, transports it to one side, and scrapes it into the feeder house (10), the feed conveyor (11) in the feeder house is on the feed end side of the scraping auger. A general-purpose combine characterized in that a retractable scraping plate (21) that is out of phase is provided at a corresponding portion. The general-purpose combine according to claim 1, wherein the scraping plate (21) has a predetermined width in the axial core direction. The general-purpose combine according to claim 1 or 2, wherein a part of the scraping plate and an end portion of the transport racen (18) of the scraping auger (7) are overlapped in the axial direction. .. The general-purpose combine according to claim 1 or 2, wherein the scraping plate (21) is provided with a cutting edge (22) at a tip end portion.

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