Massage cylinder

Abstract

DEPCT6726 / 07 / 2567 At least one of the 40 support pieces for the massage teeth of the massage cylinder is provided. In such a way that the position of the anterior end of the support component for the massage teeth is 40 It will be similar to the position of the rear tip of at least one spiral blade.33 In the direction along the perimeter of the raked section;

Description

Handling drum

[0001] The present invention relates to a threshing drum.

[0002] As disclosed in Patent Document 1, some threshing drums include a threshing drum support shaft (rotating support shaft) rotatably mounted in a threshing chamber into which the entire harvested crop is dumped in a position along the front-to-back direction of the threshing chamber, a sweeping section supported on the front of the threshing drum support shaft and sweeping the dumped crop toward the rear of the threshing chamber, and a threshing section supported on a section of the threshing drum support shaft rearward of the sweeping section and threshing the crop scraped in by the sweeping section. Also, some threshing drums of this type include a sweeping section equipped with a base and spiral blades provided on the outer periphery of the base, and a threshing section equipped with a plurality of rod-shaped threshing tooth support members supported on the threshing drum support shaft in a state aligned with the threshing drum support shaft and spaced apart in the circumferential direction of the threshing section, and a plurality of rod-shaped threshing teeth supported on the threshing tooth support member in a state that the teeth protrude radially outward from the threshing section and are spaced apart in the direction along the threshing drum support shaft.

[0003] Japanese Patent Application Publication No. 2019-4765 (JP 2019-004765 A)

[0004] In the above-mentioned threshing drum, multiple threshing tooth support members are arranged at intervals around the circumferential direction of the threshing section behind the scraping section, so if the crops scraped into the front end of the threshing section by the scraping section get into the gaps between the threshing tooth support members, the threshing section will not be able to properly hand over the crops to be threshed, and the flow of the threshed material in the threshing section will be poor.

[0005] The present invention provides a threshing drum that can smoothly transfer crops raked into a threshing section by a raking section to the threshing section.

[0006] The threshing drum according to the present invention comprises a threshing drum support shaft rotatably provided in a threshing chamber into which the entire harvested crop is thrown in, in an orientation along the front-to-rear direction of the threshing chamber; a sweeping section supported on the front of the threshing drum support shaft and sweeping the thrown crop toward the rear of the threshing chamber; and a threshing processing section supported on a portion of the threshing drum support shaft rearward of the sweeping section and threshing the crop thrown in by the sweeping section, wherein the sweeping section comprises a base section and a spiral blade provided on the outer periphery of the base section, and the threshing processing section has a threshing drum support shaft and ... The system is also provided with a plurality of rod-shaped threshing tooth support members supported on the threshing drum support shaft at intervals around the circumferential direction of the threshing processing section, and each of the plurality of threshing tooth support members has a plurality of rod-shaped threshing teeth that protrude from the threshing tooth support member toward the radial outside of the threshing processing section and are supported on the threshing tooth support member at intervals in a direction along the threshing drum support shaft, and at least one of the threshing tooth support members is arranged so that the front end position of the threshing tooth support member is the same as the terminal end position of the spiral blade in the circumferential direction of the scraping section.

[0007] According to this configuration, crops that are scraped into the front end of the threshing processing section by the scraping section and come off the spiral blade are received by at least one threshing tooth support member, so that the crops as threshed material from the scraping section can be smoothly transferred to the threshing processing section.

[0008] In the present invention, it is preferable that a plurality of the helical blades are provided, and one or more of the treating tooth support members are located between the terminal ends of the helical blades adjacent to each other in the circumferential direction of the raking portion.

[0009] According to this configuration, the distance between the terminal ends of adjacent spiral blades in the circumferential direction of the scraping section is not too narrow, so that the scraping of crops by each spiral blade into the threshing section is not too dense, and the crops can be smoothly handed over to the threshing section without clogging.

[0010] In the present invention, the multiple handwheel tooth support members include a first handwheel tooth support member having a narrower distance between the handwheel tooth located closest to the front end of the handwheel tooth support member and the rear end of the base portion, and a second handwheel tooth support member having a wider distance between the handwheel tooth located closest to the front end of the handwheel tooth support member and the rear end of the base portion, and it is preferable that the terminal end position of the spiral blade and the front end position of the second handwheel tooth support member are the same in the circumferential direction of the scraping portion.

[0011] The crops raked into the front end of the threshing section by the scraping section are received by the second threshing tooth support member, which has a wider gap between the rear end of the base section and the threshing tooth adjacent to this rear end than the first threshing tooth support member, so the threshing tooth is less likely to become an obstacle to the second threshing tooth support member receiving the crops, and the crops can be smoothly transferred from the scraping section to the threshing section.

[0012] In the present invention, it is preferable that a plurality of the helical blades are provided, and that the terminal ends of all the helical blades are positioned at the same position as the front end of the treating tooth support member in the circumferential direction of the raking portion.

[0013] According to this configuration, crops that are scraped into the front end of the threshing section by the scraping section and that fall off all of the spiral blades are received by the threshing tooth support member, so that the crops can be smoothly transferred from the scraping section to the threshing section.

[0014] Fig. 1 is a side view showing the entirety of a normal type combine harvester; Fig. 2 is a longitudinal sectional side view of a threshing device; Fig. 3 is a longitudinal sectional rear view of a threshing drum at a position rearward of the raking portion; Fig. 4 is a development view of a portion of the threshing drum where the rear portion of the raking portion and the front portion of the threshing processing portion are located.

[0015] An embodiment of the present invention will be described below with reference to the drawings. In the following description, with respect to the traveling body of a standard combine harvester, the direction of arrow F shown in Figure 1 will be referred to as the "forward body," the direction of arrow B as the "rearward body," the direction of arrow U as the "upward body," the direction of arrow D as the "downward body," the direction toward the front of the page as the "leftward body," and the direction toward the back of the page as the "rightward body."

[0016] [Overall View of a Full-Type Combine Harvester] As shown in Figure 1, a full-type combine harvester includes a body frame 1 constructed by connecting a plurality of steel members, such as square pipes, and a traveling machine body having a pair of left and right crawler-type traveling devices 2 mounted below the body frame 1. A driver's section 4 and a harvesting and transporting device 6 are mounted at the front of the traveling machine body (front of the machine body). The driver's section 4 is equipped with a driver's seat 3. The harvesting and transporting device 6 includes a harvesting section 8 mounted at the front of the harvesting and transporting device 6 and harvesting stalks of crops such as rice, wheat, and buckwheat planted in the field using a clipper-type reaping device 7, and a transporting device 9 mounted at the rear of the harvesting and transporting device 6 and transporting the stalks harvested by the harvesting section 8 to a predetermined location on the traveling machine body. At the rear of the traveling machine body (rear of the machine body), there is provided a threshing device 10 that receives and threshes the harvested stalks transported by the transport device 9 and sorts the threshed product (crop) after threshing, and a grain tank 11 that collects and stores the grains obtained by the threshing device 10. The threshing device 10 and the grain tank 11 are installed side by side. A grain discharge device 12 that discharges grains from the grain tank 11 is connected to the rear of the grain tank 11.

[0017] 1 and 2, the conveying device 9 includes a conveying case 13 extending from the rear of the harvesting unit 8 to the front of the threshing device 10. An endless rotating belt 14 is provided inside the conveying case 13 and is rotatable between the lower and upper parts of the conveying case. The endless rotating belt 14 is provided with locking conveying sections 14a at multiple locations in the longitudinal direction.

[0018] In the conveying device 9, the engaging and conveying section 14a is transported by the endless rotating belt 14, and the harvested straw from the harvesting section 8 is engaged and conveyed inside the conveying case 13 by the engaging and conveying section 14a and fed into the scraping section 30 provided at the front of the handling drum 21.

[0019] [Configuration of the threshing device] When explaining the threshing device 10 and the threshing drum 21, the processing start side of the threshing device 10 and the threshing drum 21 [the stalk input side (left side of the paper in Figure 2)] will be referred to as the "front," and the processing end side of the threshing device 10 and the threshing drum 21 [the stalk discharge side (right side of the paper in Figure 2)] will be referred to as the "rear."

[0020] As shown in Figure 2, the threshing device 10 comprises a threshing section 10A provided at the top of the threshing device 10, and a sorting section 10B provided below the handling chamber 20 in the threshing section 10A. In the threshing device 10, the threshing direction in the threshing section 10A coincides with the front-to-rear direction of the traveling machine body, and the upstream side of the threshing direction is set to be located at the front side of the traveling machine body.

[0021] As shown in FIG. 2, the threshing section 10A includes a threshing chamber 20 formed at the top of the threshing device 10. A threshing drum 21 is provided in the threshing chamber 20. The threshing drum 21 is driven to rotate clockwise as viewed from the front (the threshing drum rotation direction indicated by arrow X in FIG. 3) around a threshing drum support shaft 22. A supply port 23 is formed at the front lower portion of the threshing chamber 20, allowing harvested straw to be fed into the threshing chamber 20. A dust discharge port 24 is formed at the rear lower portion of the threshing chamber 20, allowing threshed straw, broken straw, and other threshed materials to be discharged outside the threshing chamber. A receiving net 25 is provided around the lower portion of the threshing drum 21 (the area below the threshing drum 21 within the periphery of the threshing drum 21). The receiving net 25 is configured in a concave shape.

[0022] The threshing chamber 20 is formed by a front support wall 26 and a rear support wall 27 that support the threshing drum 21, a top plate 28 provided above the threshing drum 21, and a receiving net 25. A plurality of dust discharge valves 29 are provided inside the top plate 28 and aligned in the front-to-rear direction of the threshing chamber 20. As shown in Figure 2, the threshing drum 21 is equipped with a sweeping section 30 provided at the front of the threshing drum 21 for sweeping the crops to be threshed toward the rear of the threshing chamber 20, and a threshing processing section 31 provided at a portion of the threshing drum 21 behind the sweeping section 30 for threshing the crops to be threshed. The threshing processing section 31 is continuous with the rear of the sweeping section 30.

[0023] In the threshing section 10A, the entire stalk of harvested grain, from the base to the tip, is fed into the front of the threshing chamber 20 through the supply port 23 by the engaging conveying section 14a of the conveying device 9. The stalk is then raked in by the raking section 30 toward the rear of the threshing drum 21 and threshed by the threshing section 31 and the receiving net 25. The rotating threshing section 31 applies a rotational force to the threshing material, causing it to hit the dust discharge valve 29, which then guides it toward the rear of the threshing chamber 20. The threshing material is threshed as it is transported toward the rear of the threshing chamber 20 by the threshing section 31. Grains obtained through the threshing process leak through the receiving net 25. The threshing material, such as threshed stalks and straw scraps, generated during the threshing process is discharged from the dust discharge port 24 to the outside of the threshing chamber 20.

[0024] 2, the handling drum 21 is provided in the handling chamber 20 in a position along the front-to-rear direction of the handling chamber 20. The handling drum 21 is provided with a handling drum support shaft 22 that is provided in the handling chamber 20 in a position along the front-to-rear direction of the handling chamber 20 and is driven to rotate around the handling drum axis P, a pick-up section 30 supported at the front of the handling drum support shaft 22, and a pick-up processing section 31 that is supported by the handling drum support shaft 22 and is continuous with the rear of the pick-up section 30.

[0025] [Configuration of the Sweeping Section] As shown in Figure 2, the sweeping section 30 includes a base 32 supported on the front portion of the threshing drum support shaft 22 and spiral blades 33 extending from the outer periphery of the base 32 toward the outside in the radial direction of the threshing drum. In this embodiment, the base 32 is formed from a sheet metal member wound into a truncated cone shape, tapering toward the front end of the threshing drum 21. The base 32 is supported by the threshing drum support shaft 22 by connecting the front end of the base 32 to the threshing drum support shaft 22 with a front disc member (not shown) and connecting the rear end of the base 32 to the threshing drum support shaft 22 with a first intermediate disc member 35. Three spiral blades 33 are arranged in parallel, forming a triple spiral.

[0026] As shown in Fig. 2, a guide section 34 is provided below the raking section 30 to guide the harvested straw from the supply port 23 to the raking section 30. The guide section 34 is provided with a downward inclination at the front.

[0027] In the raking section 30, the base section 32 is driven by the threshing drum support shaft 22 via the front disc member and the first middle disc member 35, and the triple spiral blades 33 are driven to rotate around the threshing drum axis P. The entire stalk from the base to the tip of the harvested stalk, which is fed into the front of the threshing chamber 20 through the supply port 23 by the locking conveying section 14a of the conveying device 9, is raked along the guide section 34 by the rotating spiral blades 33 toward the rear of the threshing drum 21.

[0028] 2 and 3 , the threshing section 31 is provided with a plurality of threshing tooth support members 40 supported by the threshing drum support shaft 22 and spaced apart from one another around the threshing drum 21. In this embodiment, six threshing tooth support members 40 are provided. Each threshing tooth support member 40 is a rod-shaped member extending along the threshing drum axis P. The threshing drum support shaft 22 supports the threshing tooth support member 40 by supporting the front end 40 f (see FIG. 4 ) of the threshing tooth support member 40 on the first intermediate disc member 35 and connecting it to the threshing drum support shaft 22 via the first intermediate disc member 35, supporting the rear end of the threshing tooth support member 40 on the rear disc member 36 and connecting it to the threshing drum support shaft 22 via the rear disc member 36, and supporting the portion of the threshing tooth support member 40 between the front end 40 f and the rear end on the second intermediate disc member 41 and connecting it to the threshing drum support shaft 22 via the second intermediate disc member 41. The front end 40f of the threshing tooth support member 40 is supported on the first middle disc member 35 by connecting a bracket 43 provided on the front end 40f to the first middle disc member 35. The bracket 43 is connected to the first middle disc member 35 with a connecting bolt. The second middle disc member 41 is provided at multiple locations in the axial direction of the threshing drum support shaft 22. The threshing teeth 42 are erected on the threshing tooth support member 40, which serves as the outer periphery of the threshing section 31 of the threshing drum 21, facing outward in the radial direction of the threshing drum. The threshing teeth 42 are erected from multiple locations on the threshing tooth support member 40 in the axial direction of the threshing drum. The threshing teeth 42 are formed of rod-shaped members. The threshing section 31 is configured in a cage shape.

[0029] In this embodiment, the handling teeth 42 are arranged in a position that follows the radial direction of the handling drum 21, but they may also be arranged in a position that is inclined relative to the radial direction of the handling drum 21, such as a position with a sweepback angle.

[0030] In the threshing processing section 31, the threshing tooth support member 40 is driven by the threshing drum support shaft 22 via the first middle disc member 35, the second middle disc member 41 and the rear disc member 36, and the threshing teeth 42 are driven around the threshing drum axis P as the center of rotation, and the threshed material moves between the inside and outside of the threshing drum 21 between the threshing tooth support members 40, while being subjected to the threshing action of the threshing teeth 42 and the receiving net 25, and also to the threshing action caused by the impact of the threshing tooth support member 40, thereby being threshed.

[0031] In other words, the threshing drum 21 is configured in a cage-like shape with an internal space S1 (see Figure 2) formed inside that communicates with the handling chamber 20 through the spaces between the threshing tooth support members 40, and is configured to have a plurality of threshing teeth 42 that protrude from the outer surface of the threshing drum 21 toward the outside in the threshing drum radial direction, aligned at intervals in the circumferential direction and processing direction of the threshing drum 21, thereby forming a so-called bar-shaped threshing drum.

[0032] Therefore, the threshing drum 21 rotates around the threshing drum support shaft 22 in the processing direction as the center of rotation, thereby introducing the threshed material (crops) from the sweeping section 30 into the space between the threshing section 31 and the receiving net 25. The threshing drum 21 threshes the threshed material located in the threshing space S2 (see FIG. 2) between the threshing drum 21 and the receiving net 25 by striking the threshed material with the threshing tooth support member 40 and the threshing teeth 42 and combing the threshing teeth 42, and allows the threshed material obtained by this threshing process to enter the internal space S1, and while stirring the threshed material in the threshing space S2 and the threshed material in the internal space S1, threshing the threshed material by striking the threshing tooth support member 40 and the threshing teeth 42 and combing the threshing teeth 42.

[0033] In this embodiment, the handling tooth support member 40 is made of round steel pipe material. In addition to round steel pipe material, various other rod-shaped materials such as round steel, square steel bar material, and square steel pipe material can be used for the handling tooth support member 40. In this embodiment, each handling tooth 42 is made of round steel material. In addition to round steel material, various other rod-shaped materials such as square steel bar material, round pipe material, and square pipe material can be used for the handling tooth 42.

[0034] 4 is an exploded view of the portion of the threshing drum 21 where the rear portion of the sweeping section 30 and the front portion of the threshing section 31 are located. As shown in FIG. 4 , at least one threshing tooth support member 40 is provided so that the front end position (the position of the front end 40f) of the threshing tooth support member 40 is the same as the terminal end position (the position of the terminal end 33r) of the spiral blade 33 in the circumferential direction of the sweeping section 30. In this embodiment, the terminal ends of all of the spiral blades 33 are configured to be the same as the front end position (the position of the front end 40f) of the threshing tooth support member 40 in the circumferential direction of the sweeping section 30. The crop scraped into the threshing section 31 by the sweeping section 30 is received by the threshing tooth support member 40, and the crop from the sweeping section 30 is smoothly transferred to the threshing section 31. 3 , the terminal end 33r of the spiral blade 33 is offset downstream in the threshing drum rotation direction X with respect to the axis 40c of the threshing tooth support member 40, but the rear terminal end 33r of the spiral blade 33 may be offset upstream in the threshing drum rotation direction X with respect to the axis 40c of the threshing tooth support member 40, or the terminal end 33r of the spiral blade 33 may coincide with the axis 40c of the threshing tooth support member 40. It is preferable that there is no gap between the terminal end 33r of the spiral blade 33 and the front end 40f of the threshing tooth support member 40 in the fore-and-aft direction of the threshing drum, but even if there is a small gap, it is acceptable as long as the transfer of crops from the spiral blade 33 to the threshing tooth support member 40 is unimpeded.

[0035] 3 , the threshing tooth support member 40 is positioned between the terminal ends 33r of adjacent helical blades 33 in the circumferential direction of the raking section 30. In this embodiment, only one threshing tooth support member 40 is positioned between the terminal ends 33r of adjacent helical blades 33, but one or more threshing tooth support members 40 may be positioned between the terminal ends 33r of adjacent helical blades 33. The spacing between the terminal ends 33r of adjacent helical blades 33 in the circumferential direction of the raking section 30 is not too narrow, so that the raking section 30 does not rake crops into the threshing processing section 31 in a dense manner.

[0036] As shown in Figures 2 and 4, each of the six handle tooth support members 40 is configured so that the spacing between adjacent handle teeth 42 is uniform, and the arrangement pitch of the handle teeth 42 in each of the handle tooth support members 40 is the same in the direction along the handle drum axis P. As shown in Figure 4, the six handle tooth support members 40 include a first handle tooth support member 40a and a second handle tooth support member 40b, each of which has a different distance K between the handle tooth 42a located furthest forward of the handle tooth support member 40 and the rear end 32r of the base portion 32. The distance K between the second handle tooth support member 40b is wider than the distance K between the first handle tooth support member 40a. That is, the distance K between the first handle tooth support member 40a is narrower, and the distance K between the second handle tooth support member 40b is wider. The terminal end position 33r of the spiral blade 33 and the front end position of the second threshing tooth support member 40b are configured to be the same in the circumferential direction of the raking section 30. Crops raked into the threshing section 31 by the raking section 30 are received by the second threshing tooth support member 40b, which has a wider distance K between the rear end 32r of the base section 32 and the threshing tooth 42a adjacent to this rear end than the first threshing tooth support member 40a, so that the threshing section 31 can take over the crops from the raking section 30 without the threshing tooth 42a becoming an obstacle.

[0037] 2, the sorting section 10B is provided with a swinging sorting device 45 that is swingably mounted below the receiving net 25, a winnowing machine 46 that is mounted in front of and below the swinging sorting device 45, and a first collection section 47 and a second collection section 48 that are mounted behind the winnowing machine 46 and below the swinging sorting device 45. In this embodiment, the first collection section 47 and the second collection section 48 are formed by screw conveyors that extend in the width direction of the threshing device 10.

[0038] In the sorting section 10B, processed material that has leaked from the receiving net 25 falls into and is received by the oscillating sorting device 45. The received processed material is shaken while being transported rearward by the oscillating sorting device 45, and is subjected to sorting processing by receiving sorting air supplied by the winnower 46 from the front below the oscillating sorting device 45 toward the rear of the oscillating sorting device 45. The clean grains obtained as the first processed material from the sorting process flow down and are collected in the first collection section 47, which then transports them to the outside of the grain tank side of the threshing device 10. The unprocessed grains obtained as the second processed material from the sorting process flow down and are collected in the second collection section 48, which then transports them to the outside of the grain tank side of the threshing device 10. Sorting dust such as straw dust, which is the third processed material generated by the sorting process, is discharged rearward of the threshing device 10 together with the sorting air from a dust discharge outlet 49 provided at the rear of the threshing device 10.

[0039] The clean grains transported by the first collection section 47 are supplied to the grain tank 11 by a grain lifting device 50 connected to the first collection section 47. The unprocessed grains transported by the second collection section 48 are returned to the starting end of the oscillating sorting device 45 by a return device 51 connected to the second collection section 48.

[0040] Other Embodiments (1) In the above-described embodiment, an example was shown in which six handling tooth support members 40 and three helical blades 33 were provided, but this is not limited thereto. For example, five or fewer or seven or more handling tooth support members 40 and two or fewer or four or more helical blades 33 may be provided. Furthermore, the combination of the number of handling tooth support members 40 and the number of helical blades 33 may be a combination in which the number of helical blades 33 is the greatest common divisor of the number of handling tooth support members 40, or any other combination may be adopted.

[0041] (2) In the above embodiment, an example is shown in which the front end positions (positions of the front end 40f) of the three handling tooth support members 40 are the same as the terminal end positions of the spiral blades 33, but this is not limited to this. It is sufficient that the front end position (position of the front end 40f) of at least one handling tooth support member 40 is the same as the terminal end position of the spiral blades 33.

[0042] (3) In the above embodiment, an example is shown in which only one handling tooth support member 40 is positioned between the terminal ends 33r of adjacent spiral blades 33, but this is not limited to this, and two or more handling tooth support members 40 may be positioned between the terminal ends 33r of adjacent spiral blades 33.

[0043] (4) In the above embodiment, the terminal positions of all the helical blades 33 are the same as the front end position of the treating tooth support member 40 (the position of the front end 40f), but this is not limited to this. The terminal positions of only some of the multiple helical blades 33 may be the same as the front end position of the treating tooth support member 40 (the position of the front end 40f).

[0044] (5) Although an example has been shown in which the first cutting tooth support member 40a and the second cutting tooth support member 40b are provided, the distance K between the cutting tooth 42a located closest to the front end of the cutting tooth support member and the rear end portion 32r of the base portion 32 may be the same for all cutting tooth support members 40.

[0045] (6) In the above embodiment, the base portion 32 is configured to have a tapered outer diameter that decreases toward the front end of the sweep portion 30, but this is not limiting. The base portion 32 may be configured so that the outer diameter is constant from the front end to the rear end of the sweep portion 30.

[0046] The present invention can be applied to a threshing drum having a base portion, a raking portion having a spiral blade, and a plurality of threshing tooth support members.

[0047] 20 threshing chamber 22 threshing drum support shaft 30 raking section 31 threshing section 32 base section 32r rear end section 33 spiral blade 33r terminal section 40 threshing tooth support member 40a first threshing tooth support member 40b second threshing tooth support member 42 threshing tooth 42a threshing tooth on front end side of threshing tooth support member K spacing

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