General purpose combine

Abstract

To provide a technology to enable a general purpose combine for harvesting rice and wheat to harvest grain corn as well.SOLUTION: In a general purpose combine in which grain culms are reaped by a reaping pre-treatment device 3 provided in a front part of a machine body frame 1, and carried into a thresher 4 through a feeder house 3D. a threshing cylinder 11 is pivotally supported in a threshing chamber 10 of the thresher 4, a receiving net 12 and a selection chamber 20 are provided under it, and the grains separated in the selection chamber 20 are conveyed to a grain tank 7 and harvested, a plurality of partition plates 65 that get close to the outer periphery along a rotation direction of the threshing cylinder 11 are detachably provided in the receiving net 12.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a general-purpose combine harvester for harvesting grains such as rice, wheat, and corn kernels (grain corn). [Background technology]

[0002] There is a general-purpose combine harvester described in Patent No. 6187523 that is used to harvest rice, wheat, soybeans, etc., but there is a combine harvester specifically for harvesting kernel corn that cuts the corn stalks at a high height, transports them to a threshing device, and separates the kernel corn from the corn for harvesting. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6187523 Summary of the Invention [Problem to be solved by the invention]

[0004] The technical objective of the present invention is to enable a general-purpose combine harvester used for harvesting rice and wheat to also be used for harvesting seed corn. [Means for solving the problem]

[0005] The above object of the present invention can be achieved by the following technical means.

[0006] The invention of claim 1 is a general-purpose combine harvester in which stalks are harvested using a pre-harvesting processing device 3 mounted on the front of the body frame 1 and transported to a threshing device 4 through a feeder house 3D, a threshing drum 11 is supported within a handling chamber 10 of the threshing device 4, and a receiving net 12 and a sorting chamber 20 are provided below the threshing drum 11, and the grains separated in the sorting chamber 20 are transported to a grain tank 7 for harvesting, characterized in that the receiving net 12 is provided with a plurality of removable partition plates 5 that approach the outer periphery in the direction of rotation of the threshing drum 11.

[0007] The invention of claim 2 is a general-purpose combine as described in claim 1, characterized in that the receiving net 12 is divided into left and right front receiving nets 13A, 13B and left and right rear receiving nets 14A, 14B, each of which is provided with a partition plate 65, and the partition plates 65 provided on the left and right front receiving nets 13A, 13B are positioned above the position where the grain sieve 23 moves from the transfer shelf 22 in the lower sorting chamber 20.

[0008] The invention of claim 3 is a general-purpose combine as described in claim 1, characterized in that multiple partition plates 65 are arranged in parallel in the front and rear of the receiving net 12, and the rearmost partition plate 65 is positioned above the terminal position of the grain sieve 23 in the lower sorting chamber 20. Effect of the Invention

[0009] In the invention of claim 1, the stalks harvested by the pre-harvesting treatment device 3 are sent into the handling chamber 10 of the threshing device 4, where the grains are handled by the threshing drum 11, sorted in the sorting chamber 20 through the receiving net 12, and taken into the grain tank 7 for harvesting, but in the case of harvesting corn, a partition plate 65 is attached to the inner surface of the receiving net 12 so that the corn hits the partition plate 65 hard, and the kernel corn is separated, sent to the sorting chamber 20, and stored in the grain tank 7. When harvesting rice or wheat, the partition plate 65 is removed from the receiving net 12 so that the rice and wheat grains are sent to the sorting chamber 20 without being damaged and stored in the grain tank 7, so that a general-purpose combine harvester for harvesting rice or wheat can be modified into a general-purpose combine harvester for harvesting kernel corn by attaching the partition plate 65 to the receiving net 12.

[0010] In the invention of claim 2, the receiving net 12 in the handling chamber 10 is divided into four parts, the left and right front receiving nets 13A, 13B and the left and right rear receiving nets 14A, 14B, so that the receiving net 12 can be easily removed from the handling chamber 10 and the partition plate 65 can be easily attached and detached. The kernel corn begins to be separated by the partition plate 65, which is the first part that the corn hits in the handling chamber 10, and then the kernel corn falls through the left and right front receiving nets 13A, 13B onto the grain sieve 23, where sorting begins.

[0011] In the invention of claim 3, when the corn hits the partition plate 65 in the handling chamber 10, the remaining kernel corn falls onto the grain sieve 23, preventing the kernel corn from being discharged together with the corn cans. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a front view of a combine harvester according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a longitudinal cross-sectional view of the threshing device of the combine harvester in the front-to-rear direction. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] 1 to 3, a general-purpose combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface, mounted on the underside of a machine frame 1, a pre-harvesting processing device 3 that harvests stalks in the field, mounted on the front side of the machine frame 1, a thresher 4 that threshes and sorts the harvested stalks, mounted on the rear left side of the pre-harvesting processing device 3, and a control unit 5 on which an operator sits, mounted on the rear right side of the pre-harvesting processing device 3. A solar panel 60' is mounted on the top surface of a cabin 59 surrounding the control unit 5, and electricity generated from sunlight is used to charge a battery.

[0014] An engine room 6 that houses the engine is provided below the control unit 5, a grain tank 7 that stores the threshed and sorted grains is provided behind the control unit 5, and a discharge auger 8 that discharges the grains to the outside is provided behind the grain tank 7.

[0015] The pre-harvesting processing device 3 is composed of a scraping and conveying device 3A that raises the culms in the field and conveys them to the rear, a cutting blade device 3B that cuts the base of the culms transported to the lower rear side of the scraping and conveying device 3A, an auger device 3C that gathers the culms transported to the rear side of the scraping and conveying device 3A to the left side, and a feeder house 3D that transports the gathered culms to the threshing device 4.

[0016] As shown in FIG. 4, the threshing device 4 is formed of a threshing chamber 10 for threshing stalks and a sorting chamber 20 for sorting the threshed grains.

[0017] A threshing drum 11 for threshing the stalks transported from the feeder house 3D is installed on the front and rear walls of the threshing chamber 10, and a receiving net 12 formed in a semicircular arc shape is provided on the underside of the threshing drum 11 along the lower outer periphery of the threshing drum 11. The upper part of the threshing drum 11 is covered with an openable threshing drum cover 62, and a dust conveying plate (not shown) for guiding the stalks to the rear of the threshing chamber 10 is provided on the inner periphery of the threshing drum cover 62.

[0018] An oscillating sorting device 21 is provided at the top of the sorting chamber 20 to sort the grains leaking down from the handling chamber 10.

[0019] The support net 12 is formed of a front support net 13 provided at the lower front part of the handling drum 11, and a rear support net 14 provided at the lower rear part of the handling drum 11. The front support net 13 is formed of a left front support net 13A and a right front support net 13B that are divided in two in the left-right direction, and the rear support net 14 is formed of a left rear support net 14A and a right rear support net 14B that are divided in two in the left-right direction.

[0020] The front portions of the left front receiving net 13A and the right front receiving net 13B are fixed to a front support member 15A installed at the front portions of the left and right walls of the handling chamber 10, and the rear portions of the left front receiving net 13A and the right front receiving net 13B are fixed to a front intermediate support member 15B installed at the intermediate portions of the left and right walls of the handling chamber 10.

[0021] The front parts of the left rear receiving net 14A and the right rear receiving net 14B are fixed to a rear intermediate support member 15C installed in the middle part between the left and right walls of the handling chamber 10, and the rear parts of the left rear receiving net 14A and the right rear receiving net 14B are fixed to a rear support member 15D installed in the rear part of the left and right walls of the handling chamber 10. The left and right front receiving nets 13A, 13B and the left and right rear receiving nets 14A, 14B can be removed from inside the handling chamber 10 and taken out of the machine body, and the left and right front receiving nets 13A, 13B have a first partition plate 65 located above the end of the transfer shelf 22 of the oscillating sorting device 21, and the arc-shaped first partition plate 65 is removably attached to the inner surface with bolts and nuts. In addition, a circular arc-shaped second partition plate 65 is removably attached to the inner surface of the left and right rear receiving nets 14A, 14B with bolts and nuts, located above the end of the grain sieve 23 of the oscillating separator 21. In addition, the partition plates 65 may be increased to three positions at equal intervals on the left and right front receiving nets 13A, 13B and the front, middle and rear of the left and right front receiving nets 13A, 13B.

[0022] At the top of the sorting chamber 20, a swaying sorting device 21 is provided for sorting grains leaking from the handling chamber 10. At the top of the swaying sorting device 21, from the front, a transfer shelf 22 made of a plate-like body, a grain sieve 23 made of a plurality of sieves arranged in parallel at a predetermined interval in the front-rear direction, inclined in the vertical direction and extending in the left-right direction, and a straw rack 24 made of a plurality of sieves arranged in parallel at a predetermined interval in the left-right direction, extending in the front-rear direction. The inclination angle (opening degree) of the sieve of the grain sieve 23 can be changed by operating a lever provided on the operating unit 5 according to the type of stalk to be harvested. This makes it possible to maintain a high level of sorting efficiency regardless of the type of stalk harvested.

[0023] Below the oscillating sorting device 21, there are provided, in order from the front, a winnower 30' for blowing sorting air to the oscillating sorting device 21, a first wind divider 31' for changing the blowing direction of the sorting air provided above the blowing port of the winnower 30', a second wind divider 32' for changing the blowing direction of the sorting air provided below, a first spiral 33 for transporting grains leaking from the grain sieve 23 to the grain tank 7, and a second spiral 34 for transporting grains with impurities, stalks, etc. (hereinafter referred to as "second grains") leaking from the rear of the grain sieve 23 to the second processing chamber or to the front of the handling chamber 10. The rotation speed of the winnower 30' is changed according to the type of culm to be harvested and the layer thickness of the culm transported on the transport shelf 22. This allows sorting efficiency to be maintained at a high level regardless of the type of harvested stalk.

[0024] As shown in Figures 6 and 7, the handling drum 11 is formed of a rotating shaft 30 that is rotatably mounted on the front and rear walls of the handling chamber 10, and a truncated cone-shaped impeller 31 and rotor 32 supported on the front part of the rotating shaft 30.

[0025] The impeller 31 is formed from a circular front plate 40, a circular rear plate 41 having a larger diameter than the front plate 40, and a side plate 42 connecting the outer peripheries of the front plate 40 and the rear plate 41.

[0026] A pair of upper and lower conveying spirals 43 are provided on the outer peripheral surface of the side plate 42 to convey the culms conveyed to the front part of the impeller 31 to the rear part of the impeller 31. This allows the culms conveyed to the impeller 31 to be efficiently conveyed from the front part to the rear part of the impeller 31 and transferred to the rotor 32.

[0027] On the front surface of the conveying spiral 43, approximately triangular reinforcing ribs 44 are provided at a predetermined angle in the circumferential direction to connect the side plate 42 and the lower front surface of the conveying spiral 43. This increases the rigidity of the conveying spiral 43 and suppresses deformation of the conveying spiral 43 due to the load applied to the conveying spiral 43 from the stalks.

[0028] The rotor 32 is divided into two in the front-rear direction and is formed of a front rotor 32A provided on the rear side of the impeller 31, and a rear rotor 32B provided on the rear side of the front rotor 32A. It should be noted that the rotor 32 may be formed as one unit without being divided into two in the front-rear direction.

[0029] The front rotor 32A is provided between the rear plate 41 of the impeller 31 and an intermediate plate 35 provided in the middle of the rotating shaft 30, and the rear rotor 32B is provided between the intermediate plate 35 of the rotating shaft 30 and a rear plate 36 of the rotating shaft 30. The intermediate plate 35 stands on the outer circumferential surface of an intermediate support member 34 that is provided in the middle of the rotating shaft 30 in the front-rear direction and has a hexagonal vertical cross section in the left-right direction.

[0030] The front rotor 32A is formed from six bar frames 50 extending in the fore-and-aft direction, three front-and-aft frames 51 extending in the fore-and-aft direction, and an outer ring 52 supported on the front-and-aft frames 51 at a predetermined interval in the fore-and-aft direction, and this outer ring 52 is provided with a plurality of treatment teeth 58 in the circumferential direction.

[0031] Similarly, the rear rotor 32B is formed from six bar frames 50 extending in the fore-and-aft direction, three front-and-aft frames 51 extending in the fore-and-aft direction, and an outer ring 52 supported on the front-and-aft frames 51 at a predetermined interval in the fore-and-aft direction. [Explanation of symbols]

[0032] 4. Threshing Equipment 7. Glentank 10 Handling room 11 Handling body 12 Receiving net 13A Left front support net 13B Right front receiving net 14A Left rear support net 14B Right rear receiving net 20 Sorting Room 22 Transport shelf 23 Glensieve

Claims

1. This general-purpose combine harvester harvests stalks with a pre-harvesting processing device (3) mounted at the front of the body frame (1) and transports them to a threshing device (4) through a feeder house (3D). A threshing drum (11) is supported within a handling chamber (10) of the threshing device (4) and a receiving net (12) and a sorting chamber (20) are provided at the lower part of the threshing drum. The grains separated in the sorting chamber (20) are transported to a grain tank (7) for harvesting. This general-purpose combine harvester is characterized in that the receiving net (12) is provided with a plurality of removable partition plates (65) that approach the outer periphery in the direction of rotation of the threshing drum (11).

2. A general-purpose combine harvester as described in claim 1, characterized in that the receiving net (12) is divided into left and right front receiving nets (13A, 13B) and left and right rear receiving nets (14A, 14B), each of which is provided with a partition plate (65), and the partition plate (65) provided on the left and right front receiving nets (13A, 13B) is positioned above the position where the grain is transferred from the transfer shelf (22) to the grain sieve (23) in the lower sorting chamber (20).

3. A general-purpose combine harvester as described in claim 1, characterized in that a plurality of partition plates (65) are arranged in parallel in the front and rear of the receiving net (12), and the rearmost partition plate (65) is positioned above the terminal position of the grain sieve (23) in the lower sorting chamber (20).

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