combine

Abstract

We propose a combine harvester that can prevent the auger device from descending beyond a predetermined level, thereby preventing damage to the rotating blades of the cutting device. [Solution] The pre-harvesting processing device consists of a scraping device that scoops and transports the grain stalks in the field backward while standing them upright, a cutting device that cuts the base of the transported grain stalks, an auger device that gathers the transported grain stalks to one side, and a feeder house that transports the gathered grain stalks to a threshing device. The cutting device is formed by a pair of left and right rotating blade devices and a lifter device positioned above the rotating blade devices. A pair of left and right lifters extending in the front-rear direction of the lifter device are positioned above the rotating blades of the rotating blade devices. A support shaft extending in the left-right direction is provided on the lower wall of the auger frame of the auger device. The rear part of the frame that supports the rotating blades and extends in the front-rear direction is rotatably supported on the support shaft. A first regulating member 65 is provided on the auger frame to restrict the auger frame from descending beyond a predetermined level.

Description

Technical Field

[0004] ,

[0006] , , ,

[0005] , , , ,

[0001] The present invention relates to a combine equipped with a pre - cutting treatment device.

Background Art

[0002] Conventionally, in front of the threshing device of a combine, there has been known a technology including a raking device that conveys the crop straw in the field backward while standing it up, a cutting device that cuts the base of the conveyed crop straw, an auger device that gathers the conveyed crop straw to one side, and a pre - cutting treatment device formed by a feeder house that conveys the gathered crop straw to the threshing device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technology of Patent Document 1, when an operator accidentally lowers the auger device more than a predetermined level, there is a risk that the rotating blade of the cutting device will deeply penetrate into the field and the rotating blade will be damaged.

[0005] Therefore, an object of the present invention is to propose a combine that can regulate the lowering of the auger device more than a predetermined level and prevent the rotating blade of the cutting device from being damaged.

Means for Solving the Problems

[0006] The present invention that solves the above problems is as follows. That is, in the combine provided with a traveling device (2) below the body frame (1), a pre - cutting treatment device (3) in front of the body frame (1), and a threshing device (4) behind the pre - cutting treatment device (3), as described in claim 1, The harvesting pre-processing device (3) comprises a scraping device (3A) that scoops and transports the grain stalks in the field backward while standing them upright, a cutting device (3B) that cuts the base of the transported grain stalks, an auger device (3C) that gathers the transported grain stalks to one side, and a feeder house (3D) that transports the gathered grain stalks to the threshing device (4). The cutting device (3B) is formed by a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20). The combine harvester is characterized in that, above (2), a pair of left and right lifters (31) extending in the front-rear direction of the lifter device (30) are arranged, a support shaft (25) extending in the left-right direction is provided on the lower wall (60A) of the auger frame (60) of the auger device (3C), the rear part of the frame (21) that supports the rotating blade (22) and extends in the front-rear direction is rotatably supported on the support shaft (25), and a first regulating member (65) that restricts the auger frame (60) from descending beyond a predetermined level is provided on the auger frame (60).

[0007] The invention described in claim 2 is a combine harvester according to claim 1, wherein the first restricting member (65) is provided on the front of the left wall (60L) and the right wall (60R) of the auger frame (60), and the lower part of the first restricting member (65) extends below the lower wall (60A).

[0008] The invention described in claim 3 is a combine harvester according to claim 2, wherein the first restricting member (65) is formed to be angled downwards toward the rear, and the lower part of the first restricting member (65) extends to the rear.

[0009] The invention described in claim 4 is the combine harvester according to claim 3, wherein reinforcing members (67) are provided between the first regulating member (65) and the left wall (60L), and between the first regulating member (65) and the right wall (60R).

[0010] The invention described in claim 5 is a combine harvester according to any one of claims 1 to 4, wherein a second restricting member (68) that is movable in the vertical direction is provided on the upper part of the first restricting member (65).

[0011] The invention described in claim 6 is the combine harvester according to claim 5, wherein the rear parts of the left and right pair of lifters (31) are connected by a plate-shaped or comb-shaped cover (33).

[0012] The invention described in claim 7 is the combine harvester according to claim 6, wherein the rotating blade (22) is positioned behind the bottom dead center of the rotational trajectory of the reel tine (13) of the scraping device (3A). [Effects of the Invention]

[0013] According to the invention described in claim 1, the pre-harvesting apparatus (3) is composed of a scraping device (3A) that scrapes and conveys the grain stalks in the field backward while raising them upright, a cutting device (3B) that cuts the base of the conveyed grain stalks, an auger device (3C) that gathers the conveyed grain stalks to one side, and a feeder house (3D) that conveys the gathered grain stalks to the threshing device (4), wherein the cutting device (3B) is formed by a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20), and above the rotating blades (22) of the rotating blade devices (20), the lifter device (30) extends in the front-rear direction. A pair of left and right lifters (31) are arranged, a support shaft (25) extending in the left-right direction is provided on the lower wall (60A) of the auger frame (60) of the auger device (3C), the rear part of the frame (21) extending in the front-rear direction that supports the rotating blade (22) is rotatably supported on the support shaft (25), and a first regulating member (65) is provided on the auger frame (60) that restricts the auger frame (60) from descending beyond a predetermined level. This restricts the auger frame (60) of the auger device (3C) from descending beyond a predetermined level, thereby preventing the rotating blade (22) of the cutting device (3B) from penetrating too deeply into the field and being damaged.

[0014] According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, the first regulating member (65) is provided on the front of the left wall (60L) and the right wall (60R) of the auger frame (60), and the lower part of the first regulating member (65) extends below the lower wall (60A), thereby further restricting the auger frame (60) of the auger device (3C) from descending beyond a predetermined level.

[0015] According to the invention described in claim 3, in addition to the effects of the invention described in claim 2, the first restricting member (65) is formed to slope downwards towards the rear, and the lower part of the first restricting member (65) is extended to the rear, thereby preventing the grain stalks from becoming entangled in the first restricting member (65) and preventing a decrease in the work efficiency of harvesting.

[0016] According to the invention described in claim 4, reinforcing members (67) are provided between the first regulating member (65) and the left wall (60L), and between the first regulating member (65) and the right wall (60R), so that deformation of the first regulating member (65) due to contact with or penetration of the field can be suppressed.

[0017] According to the invention described in claim 5, in addition to the effects of the invention described in any one of claims 1 to 4, a second restricting member (68) that is movable in the vertical direction is provided on the upper part of the first restricting member (65). By moving the second restricting member (68) upward, it is possible to suppress tall grain stalks such as buckwheat and rapeseed from entering the inside of the auger frame (60). Furthermore, by moving the second restricting member (68) downward, the separation effect of short grain stalks such as adzuki beans and soybeans can be enhanced.

[0018] According to the invention described in claim 6, in addition to the effects of the invention described in claim 5, the rear parts of the left and right pair of lifters (31) are connected by a plate-shaped or comb-shaped cover (33), so that the amount of grain stalks that leak from the rear parts of the left and right pair of lifters (31) into the field is reduced and head loss can be suppressed.

[0019] According to the invention described in claim 7, in addition to the effects of the invention described in claim 6, the rotating blade (22) is positioned behind the bottom dead center of the rotational trajectory of the reel tine (13) of the scraping device (3A), thereby further suppressing head loss and enabling efficient cutting of the base of the grain stalks scraped up by the reel tine (13) of the scraping device (3A) and conveyance to the auger frame (60). [Brief explanation of the drawing]

[0020] [Figure 1] This is a front view of a combine harvester. [Figure 2] It is a left side view of the combine. [Figure 3] It is a plan view of the combine. [Figure 4] It is a plan view of the cutting device. [Figure 5] It is a left side view of the cutting device. [Figure 6] It is a perspective view of the cutting device. [Figure 7] It is an enlarged view of the main part of the cutting device. [Figure 8] It is an explanatory view of the mounting method of the regulating member. [Figure 9] It is a left side view of the regulating member of the first embodiment. [Figure 10] It is a plan view for explaining the mounting method of the regulating member. [Figure 11] It is a left side view of the regulating member of the second embodiment. [Figure 12] It is a transmission diagram of the output rotation of the engine.

Mode for Carrying Out the Invention

[0021] As shown in FIGS. 1 to 3, the general-purpose combine is provided with a traveling device 2 composed of a pair of left and right crawlers that travel on the soil surface below the body frame 1, a pre-cutting device 3 for harvesting the cereal straw in the field is provided in front of the body frame 1, a threshing device 4 for threshing and sorting the harvested cereal straw is provided on the left rear side of the pre-cutting device 3, and an operator's cab 5 for the operator to board is provided on the right rear side of the pre-cutting device 3.

[0022] An engine room 6 for housing the engine is provided below the cab 5, a grain tank 7 for storing the threshed and sorted grains is provided behind the cab 5, a grain elevating part 8A extending in the vertical direction for discharging the grains to the outside is provided behind the grain tank 7, and a discharge auger 8 composed of a horizontal discharge part 8B extending forward from the upper part of the grain elevating part 8A is provided.

[0023] The pre-harvesting processing device 3 consists of a scraping device 3A that scoops and transports the grain stalks in the field backward while standing them upright, a cutting device 3B that cuts the base of the grain stalks being transported to the rear and below the scraping device 3A, an auger device 3C that gathers the grain stalks with their bases cut to the left, and a feeder house 3D that transports the gathered grain stalks to the threshing device 4.

[0024] <Scooping device> As shown in Figures 4 and 5, the scraping device 3A is located on the front upper side of the auger frame 60 of the auger device 3C. It is also formed to be approximately the same width as the width of the auger frame 60 in the left-right direction.

[0025] The scraping device 3A consists of a scraping reel 10 and an arm 11 that moves the scraping reel 10 up and down.

[0026] In a side view, the scraping reel 10 is formed in a roughly hexagonal shape, and tine support rods 12 extending in the left-right direction are provided at six corners, with a plurality of reel tines 13 suspended from the tine support rods 12 at predetermined intervals in the left-right direction.

[0027] A rotating shaft 14 extending in the left-right direction is mounted on the front of the arm 11, and a scraping reel 10 is supported on the rotating shaft 14. The rear of the arm 11 is rotatably fixed to the upper part of the rear wall of the auger frame 60 of the auger device 3C, and the middle part of the left wall of the auger frame 60 is connected to the arm 11 by a lifting device such as a hydraulic cylinder that swings the front of the arm 11 up and down.

[0028] As shown in Figures 4-6, the cutting device 3B consists of a pair of left and right rotating blade devices 20 for cutting the base of the grain stalks, and a pair of left and right lifter devices 30 located above the rotating blade devices 20. The lifter devices 30 are devices that stand up the grain stalks that have been picked up by the picking device 3A.

[0029] The left-right spacing between the left cutting device 3B and the right cutting device 3B is set to match the spacing of the rows in the field. This allows the rotating blade device 20 to efficiently cut the grain stalks planted in each row of the field.

[0030] The rotating blade device 20 is formed from a frame 21 extending in the front-rear direction, a rotating blade 22 provided on the upper front side of the frame 21, a motor 23 that rotates the rotating blade 22 provided on the upper rear side of the frame 21, and a cover 24 that is detachably attached to the lower part of the frame 21.

[0031] The frame 21 of the rotary blade device 20 located on the left side extends from the rear towards the front right, while the frame 21 of the rotary blade device 20 located on the right side extends from the rear towards the front left.

[0032] The rotating blade 22 of the left rotating blade device 20 rotates clockwise, and the rotating blade 22 of the right rotating blade device 20 rotates counterclockwise. This prevents soil that comes into contact with the rotating blade 22 from being scattered outside the auger frame 60.

[0033] The sprocket for the rotating blade 22, supported at the bottom of the rotating shaft of the rotating blade 22, the sprocket for the motor 23, supported at the bottom of the rotating shaft of the motor 23, and the chains wound around both sprockets are covered by the cover 24. The rotating shafts of the rotating blade 22 and the rotating shafts of the motor 23 are inserted through the frame 21 and extend below the lower surface of the frame 21. This prevents the sprockets and chains from coming into contact with the field and prevents soil from adhering to the sprockets and chains.

[0034] As shown in Figure 7, the rear of the frame 21 is rotatably fixed to the support shafts 25 that extend in the left-right direction and are installed on the left and right walls of the auger frame 60. This allows the front of the frame 21 to move vertically along the unevenness of the field, enabling the rotating blades 22 to efficiently cut the base of the grain stalks.

[0035] A detection unit 26 is formed at the rear of the frame 21, extending backward from the rear of the frame 21, and a pin 26A extending in the left-right direction is provided on the left side of the rear of the detection unit 26. A detector 27A of a sensor 27, such as a potentiometer, mounted on the auger frame 60 is fitted onto the pin 26A. This allows the frame 21 of the rotating blade device 20 to quickly measure the unevenness of the field, and the pre-harvesting device 3 to quickly move vertically along the unevenness of the field, thereby maintaining the cutting device 3B at a predetermined height.

[0036] The lower front portion of the cover 24 is formed with an upward slope. This prevents the front portion of the cover 24 from digging into unevenness in the field, allowing the front portion of the rotating blade device 20 to move efficiently up and down along the unevenness of the field.

[0037] The rotating blade 22 is positioned below the upper surface of the lower wall of the auger frame 60. This prevents a large amount of soil that comes into contact with the rotating blade 22 from entering the auger frame 60. In addition, the rotating blade 22 is positioned behind the bottom dead center of the reel tine 13 when the raking device 3A is lowered. This suppresses head loss and allows the base of the grain stalks raked in by the raking device 3A to be cut and efficiently transported to the auger frame 60.

[0038] A regulating member 28 is provided on the lower rear side of the frame 21. This prevents the front of the frame 21 from lowering excessively and coming into contact with the field soil when the pre-harvesting device 3 is raised.

[0039] As shown in Figure 8, a restricting member 28 having a predetermined length in the left-right direction is fixed to the front of the lower wall of the auger frame 60 by fastening means such as bolts. The restricting member 28 is formed of an angle member or the like, and a vertical portion extending downward from the front of the lower wall of the auger frame 60 and a horizontal portion extending forward from the lower end of the vertical portion are connected by a reinforcing member 28A at a predetermined interval in the left-right direction. This prevents deformation of the horizontal portion of the restricting member 28 due to contact with the cover 24. The support shaft 25 is inserted through an opening formed in the connecting portion 21A at the rear of the frame 21 and an opening formed in the reinforcing member 28A.

[0040] As shown in Figures 4-6, the lifter device 30 is made up of a lifter 31 made from round steel and a skid 32 attached to the underside of the front part of the lifter 31. Furthermore, it is preferable that the rear parts of the left and right pair of lifters 31 are connected by a plate-shaped or comb-shaped cover 33. This reduces the amount of grain stalks that leak into the field from the rear parts of the left and right pair of lifters 31, thereby suppressing head loss.

[0041] In a side view, the lifter 31 is formed with an upward slope at the rear, starting from the front end located in front of the rotating blade 22 of the rotating blade device 20, and extending upward to the upper side of the motor 23, before sloping downward at the rear. The rear part of the lifter 31 is rotatably fixed to a support shaft 34 that extends in the left-right direction and is located on the upper rear side of the support shaft 25. This allows the front part of the lifter 31 to move vertically along the unevenness of the field, efficiently uprighting the grain stalks picked up by the picking device 3A. It also allows for efficient guidance of the grain stalks with their bases cut to the auger device 3C.

[0042] In a plan view, the left side of the sled 32 is formed from the front end towards the rear left, and the right side of the sled 32 is formed from the front end towards the rear right. In a longitudinal section view in the left-right direction, the left side of the sled 32 is formed towards the upper left, and the right side of the sled 32 is formed towards the upper right. This allows the sled 32 to move along the unevenness of the field, preventing the front part of the lifter 31 from penetrating the field soil.

[0043] <Auger device> As shown in Figures 4-6, the auger device 3C consists of an auger frame 60 and scraping augers 61 mounted on the left and right walls of the auger frame 60.

[0044] The auger frame 60 is formed from a lower wall 60A, a left wall 60L erected to the left of the lower wall 60A, a right wall 60R erected to the right of the lower wall 60A, and a rear wall 60B connecting the rear ends of the lower wall 60A, the left wall 60L, and the right wall 60R. An inlet (not shown) for transporting grain stalks to the feeder house 3D is formed on the left side of the rear wall 60B. In a side view, the lower parts of the lower wall 60A, the left wall 60L, and the right wall 60R of the auger frame 60 are formed in a gently curving shape that protrudes downward.

[0045] Multiple raking fingers 62 that can extend and retract from the outer surface are provided on the left side of the outer surface of the raking auger 61. This allows the grain stalks that have been gathered in front of the inlet of the auger frame 60 to be efficiently transported to the feeder house 3D.

[0046] Multiple conveying spirals 63 are provided on the right side of the outer surface of the raking auger 61. This allows the grain stalks that have been conveyed to the auger frame 60 to be efficiently gathered in front of the inlet.

[0047] (Regulating member of the first embodiment) Figures 9 and 10 illustrate the regulating member 65 of the first embodiment (the "first regulating member" in the claims). The regulating member 65 is formed from a round pipe and is provided at the front ends of the left wall 60L and the right wall 60R of the auger frame 60, respectively, and extends downward from the lower parts of the left wall L and the right wall R. This prevents the auger frame 60 from descending excessively and prevents the rotating blade 22, which is positioned below the lower wall 60A of the auger frame 60, from coming into contact with the field and being damaged.

[0048] The restricting members 65 attached to the left wall L and the right wall R are identical in shape. To avoid redundant explanations, the following description will focus on the restricting member 65 attached to the front of the left wall L.

[0049] In a side view, the upper end of the restricting member 65 is located at the upper end of the front of the left wall 60L. The restricting member 65 consists of an upper section formed sloping downwards from the upper end of the restricting member 65 along the front of the left wall 60L, an intermediate section formed sloping downwards more gently than the upper section from the lower end of the upper section, and a lower section formed extending rearward from the lower part of the intermediate section. This prevents grain stalks from becoming entangled in the restricting member 65, thereby preventing a decrease in the efficiency of harvesting work.

[0050] A plate-shaped, bent connecting member 66 is fixed to the opposing portion of the restricting member 65 facing the front of the left wall 60L. The restricting member 65 is detachably attached to the front of the left wall L via the connecting member 66 using fastening members such as bolts. In addition, a reinforcing member 67 is provided between the restricting member 65 and the front of the left wall L. This prevents the restricting member 65 from deforming due to its lower part coming into contact with or penetrating the field.

[0051] (Regulating member of the second embodiment) Figure 11 shows the regulating member 65 of the second embodiment. Components identical to the regulating member 65 of the first embodiment are denoted by the same reference numerals, and their descriptions are omitted.

[0052] The regulating members 65 are formed from round pipes and are provided at the front ends of the left wall L and right wall R of the auger frame 60, respectively, and extend downward from the lower parts of the left wall L and right wall R. This prevents the auger frame 60 from descending excessively, and prevents the rotating blades 22, which are positioned below the lower wall 60A of the auger frame 60, from coming into contact with the field and being damaged.

[0053] In a side view, the upper end of the restricting member 65 has an extension that extends upward from the upper end of the front of the left wall 60L. The restricting member 65 is composed of an upper part formed downward from the upper end of the extension along the front of the left wall 60L, an intermediate part formed downward from the lower end of the upper part more gently than the upper part, and a lower part formed extending rearward from the lower part of the intermediate part. This prevents grain stalks from becoming entangled in the restricting member 65, thereby preventing a decrease in the efficiency of harvesting work.

[0054] A regulating member (the "second regulating member" in the claim) 68, made from a round pipe or round steel and movable in the vertical direction, is inserted into the upper part of the regulating member 65. A positioning member 69, such as a bolt, is provided at the rear of the extension to fix the vertically moved regulating member 68 to the regulating member 65. This allows the regulating member 68 to be moved upward to prevent tall grain stalks such as buckwheat and rapeseed from entering the inside of the auger frame 60. It also allows the regulating member 68 to be moved downward to enhance the separation effect of short grain stalks such as adzuki beans and soybeans.

[0055] <Feeder House> As shown in Figure 2, the feeder house 3D connects the auger device 3C and the threshing device 4, and is a device that transports the grain stalks, which are the material to be processed, to the left side of the auger frame 60 to the threshing device 4.

[0056] <Transmission path of engine power rotation> As shown in Figure 12, the engine's output rotation is transmitted to the rotating shaft 70. The output rotation transmitted to the rotating shaft 70 is transmitted to the feeder house 3D via sputets 70A and 70B, and then to the rotating shaft 71 via sputet 70C.

[0057] The output rotation transmitted to the rotating shaft 71 is transmitted to the auger device 3C via the sprocket 71A, causing the scraping auger 61 to rotate. It is also transmitted to the rotating shaft 72 via the sprocket 71B.

[0058] The output rotation transmitted to the rotating shaft 72 is transmitted to the rotating shaft 73 via the sprocket 72A, and then to the rotating shaft 14 of the scraping device 3A via the sprocket 72B, causing the scraping reel 10 to rotate.

[0059] The output rotation transmitted to the rotating shaft 73 is transmitted via the sprocket 73A to a rotating shaft 40 that drives a conveying device (not shown) located above the rotating blade device 20. Although the rotating blade device 20 shown is rotated by an electric motor, it can also be rotated by transmitting the output rotation of an engine. [Explanation of Symbols]

[0060] 1. Aircraft frame 2. Traveling device 3. Pre-harvesting treatment device 3A Scraping device 3B Cutting device 3C Auger Device 3D Feeder House 4. Threshing machine 13 Reeltine 20 Rotary blade device 21 frames 22 rotary blades 25 Spindle 30 Lifter device 31 Lifter 33 Cover 60 Auger Frame 60A Lower wall 60L left wall 60R Right Wall 65 Regulating member (First regulating member) 67 Reinforcement members 68. Regulating member (Second regulating member)

Claims

1. In a combine harvester having a running gear (2) on the underside of the machine frame (1), a pre-harvesting device (3) on the front side of the machine frame (1), and a threshing device (4) behind the pre-harvesting device (3), The aforementioned pre-harvesting processing device (3) consists of a scraping device (3A) that scoops and transports the grain stalks in the field backward while making them stand upright, a cutting device (3B) that cuts the base of the transported grain stalks, an auger device (3C) that gathers the transported grain stalks to one side, and a feeder house (3D) that transports the gathered grain stalks to the threshing device (4). The cutting device (3B) is formed by a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20), A pair of left and right lifters (31) extending in the front-rear direction of the lifter device (30) are positioned above the rotating blade (22) of the rotating blade device (20). A support shaft (25) extending in the left-right direction is provided on the lower wall (60A) of the auger frame (60) of the auger device (3C). The rear portion of the frame (21) that extends in the front-rear direction and supports the rotating blade (22) is rotatably supported on a pivot shaft (25), A combine harvester characterized in that the auger frame (60) is provided with a first regulating member (65) that restricts the auger frame (60) from descending beyond a predetermined level.

2. The combine harvester according to claim 1, wherein the first regulating member (65) is provided on the front of the left wall (60L) and the right wall (60R) of the auger frame (60), and the lower part of the first regulating member (65) extends below the lower wall (60A).

3. The combine harvester according to claim 2, wherein the first restricting member (65) is formed to slope downward towards the rear, and the lower part of the first restricting member (65) extends to the rear.

4. The combine harvester according to claim 3, wherein reinforcing members (67) are provided between the first regulating member (65) and the left wall (60L), and between the first regulating member (65) and the right wall (60R).

5. The combine harvester according to any one of claims 1 to 4, wherein a second restricting member (68) that is movable in the vertical direction is provided on the upper part of the first restricting member (65).

6. The combine harvester according to claim 4, wherein the rear portions of the pair of left and right lifters (31) are connected by a plate-shaped or comb-shaped cover (33).

7. The combine harvester according to claim 5, wherein the rotating blade (22) is positioned behind the bottom dead center of the rotational trajectory of the reel tine (13) of the scraping device (3A).

Images