Combine-harvester

Abstract

To suppress harvesting errors of fallen crops and to prevent a lifter which raises the crops from crashing into a farm field surface.SOLUTION: A combine-harvester is configured such that a base part of a first lifter (43A) and a base part of a second lifter (43B) which extend in the front-rear direction are fixed to a pre-reaping treatment device (3), the first lifter (43A) is composed of an upper lifter (46A) and a tip lifter (49A), the second lifter (43B) is composed of an upper lifter (46B) and a tip lifter (49B), a rear upward inclination angle (K2) at the rear part of the tip lifter is formed to be a rear upward inclination angle steeper than a rear upward inclination angle (K1) of the upper lifter in a side view, and a rear upward inclination angle (K3) at the front part of the tip lifter is formed to be a rear upward inclination angle gentler than the rear upward inclination angle (K2) at the rear part of the tip lifter.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a lifter device provided on an auger device of a pre-harvest treatment device for a combine harvester. [Background technology]

[0002] Conventionally, pre-harvest processing equipment has been composed of a raking device that stands crops in the field and transports them to the rear, a cutting blade device that cuts the base of the crops transported to the lower rear part of the raking device, an auger device that gathers the crops transported from the raking device to one side, and a feeder house that transfers the gathered crops to the threshing device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-238516 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technology of Patent Document 1, a problem has been pointed out in which crops in the field, particularly fallen crops, can become entangled in the cutting blade device or the auger device, reducing the efficiency of the cutting work because cutting operations must be interrupted to remove the crops entangled in the cutting blade device or the auger device.

[0005] Therefore, an object of the present invention is to propose a combine harvester that prevents crops in the field from becoming entangled in the cutting blade device and auger device, thereby achieving high cutting work efficiency. [Means for solving the problem]

[0006] The present invention which has solved the above problems is as follows.

[0007] That is, the invention described in claim 1 is a combine harvester having a traveling device 2 provided under a machine frame 1, a pre-harvesting processing device 3 provided in front of the machine frame 1, and a thresher 4 provided behind the pre-harvesting processing device 3, the pre-harvesting processing device 3 being composed of a raking device 3A that transports crops in the field rearward while standing them up, a cutting blade device 3B that cuts the bases of the transported crops, an auger device 3C that gathers the transported crops to one side, and a feeder house 3D that transports the gathered crops to the thresher 4, The auger device 3C is formed of an auger frame 30 that is open at the front and the top, and a rake auger 31 that is installed on the left and right walls of the auger frame 30. A left rotating shaft 42A and a right rotating shaft 42B are provided on the upper surface of the lower wall of the auger frame 30 at a predetermined interval in the left-right direction. A base of a pair of left and right first lifters 43A extending in the front-rear direction is fixed to the left rotating shaft 42A, and a base of a pair of left and right second lifters 43B extending in the front-rear direction is fixed to the right rotating shaft 42B. The first lifter 43A is connected to an upper lifter 46. The first lifter 43B is composed of an upper lifter 46B and a tip lifter 49B, and when viewed from the side, the rear upward inclination angle K2 of the rear portions of the tip lifters 49A, 49B is formed at a rear upward inclination angle that is steeper than the rear upward inclination angle K1 of the upper lifters 46A, 46B, and the front upward inclination angle K3 of the tip lifters 49A, 49B is formed at a rear upward inclination angle that is gentler than the rear upward inclination angle K2 of the rear portions of the tip lifters 49A, 49B.

[0008] The invention recited in claim 2 is the combine harvester recited in claim 1, characterized in that the tip portions of the tip lifters 49A, 49B are configured to extend forward of the cutting blade device 3B.

[0009] The invention described in claim 3 is a combine harvester as described in claim 1 or claim 2, characterized in that sleds 51AT, 51BT that follow the field surface are provided at the bottom of the first lifter 43A and the second lifter 43B, and the sleds 51AT, 51BT are configured to be freely attached and detached. Effect of the Invention

[0010] In the invention described in claim 1, a first lifter 43A and a second lifter 43B for lifting up the crops are provided on the auger frame 30 of the pre-harvesting treatment device 3, the first lifter 43A is composed of an upper lifter 46A and a tip lifter 49A, and the second lifter 43B is composed of an upper lifter 46B and a tip lifter 49B. In a side view, the rear upward inclination angle K2 of the rear parts of the tip lifters 49A, 49B is formed to be a steeper rear upward inclination angle than the rear upward inclination angle K1 of the upper lifters 46A, 46B, and the front rear upward inclination angle K3 of the tip lifters 49A, 49B is formed to be a gentler rear upward inclination angle than the rear upward inclination angle K2 of the rear parts of the tip lifters 49A, 49B. This allows the crops to be lifted up, thereby suppressing crop harvesting errors. In addition, the rear upward inclination angle K3 of the front parts of the front end lifters 49A, 49B is formed at a rear upward inclination angle that is gentler than the rear upward inclination angle K2 of the rear parts of the front end lifters 49A, 49B, so that the front end lifters 49A, 49B can be prevented from crashing into the field surface.

[0011] In the invention described in claim 2, in addition to the effects of the invention described in claim 1, the tips of the tip lifters 49A, 49B are configured to extend forward of the cutting blade device 3B, thereby preventing crops in the field from becoming entangled in the cutting blade device 3B and the auger device 3C, thereby improving the efficiency of cutting work.

[0012] In the invention described in claim 3, in addition to the effects of the invention described in claim 1 or claim 2, sleds 51AT, 51BT that follow the field surface are provided at the bottom of the first lifter 43A and the second lifter 43B, and the sleds 51AT, 51BT are configured to be freely attached and detached, making it easy to replace deteriorated sleds 51AT, 51BT. [Brief description of the drawings]

[0013] [Figure 1] Combine harvester front view [Diagram 2] Left side view of combine harvester [Diagram 3] FIG. [Figure 4] Left side view of the scraping device and lifter device [Diagram 5] A perspective view of a cutting blade device and an auger device [Figure 6] Plan view of the cutting blade device and the auger device [Figure 7] Plan view of the raking auger of the auger device [Figure 8] Plan view of the raking auger of the auger device [Figure 9] Plan view of the lifter device [Figure 10] FIG. 1 is a left side view of a lifter device provided on the left side of the auger frame. [Figure 11] FIG. 1 is a left side view of a lifter device provided on the right side of the auger frame. [Figure 12] FIG. 13 is a left side view of another embodiment of a lifter device provided on the left portion of the auger frame. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] 1 to 3, the general-purpose combine harvester is provided with a traveling device 2 consisting of a pair of left and right crawlers 2A, 2B that travels on the soil surface on the underside of a machine frame 1, a pre-harvesting processing device 3 that harvests crops in the field is provided on the front side of the machine frame 1, a threshing device 4 that threshes and sorts the harvested crops is provided on the rear left side of the pre-harvesting processing device 3, and a control unit 5 on which an operator sits is provided on the rear right side of the pre-harvesting processing device 3. In the general-purpose combine harvester of this embodiment, azuki beans are assumed to be the crop to be harvested, but the harvester can be applied to crops other than azuki beans.

[0015] An engine room 6 that houses the engine is provided below the control unit 5, a grain tank 7 that stores the crop grains that have been threshed and sorted is provided behind the control unit 5, and a discharge auger 8 that discharges the crop grains to the outside is provided behind the grain tank 7.

[0016] The pre-harvesting processing device 3 is composed of a raking device 3A that stands the crops in the field and transports them to the rear, a cutting blade device 3B that cuts the base of the crops transported to the lower rear side of the raking device 3A, an auger device 3C that gathers the crops transported to the rear side of the raking device 3A to the left side, and a feeder house 3D that transports the gathered crops to the threshing device 4.

[0017] The feeder house 3D connects the auger device 3C and the threshing device 4, and transports the crops transported to the left part of the auger frame 30 to the threshing device 4.

[0018] As shown in FIG. 4, the scraping device 3A is provided on the upper front side of the auger frame 30 of the auger device 3C, and is formed to have substantially the same width as the width of the auger frame 30 in the left-right direction.

[0019] The take-in device 3A is composed of a take-in reel 10 and a pair of left and right arms 11 that raise and lower the take-in reel 10 in the vertical direction.

[0020] When viewed from the side, the take-in reel 10 is formed in an approximately hexagonal shape, with tine support rods 12 extending in the left-right direction provided at six corners, and a number of reel tines 13 are suspended from the tine support rods 12 at predetermined intervals in the left-right direction.

[0021] A rotating shaft 14 extending in the left-right direction is mounted on the front of the arm 11, and the take-in 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 30 of the auger device 3C, and the middle part between the arm 11 and the left wall of the auger frame 30 is connected by a lifting device 15 such as a hydraulic cylinder that swings the arm 11 up and down.

[0022] As shown in FIGS. 5 and 6, the cutting blade device 3B extending in the left-right direction is provided at the front end of the lower wall of the auger frame 30 of the auger device 3C.

[0023] The cutting blade device 3B is composed of a finger-shaped fixed blade 20 with a narrow blade width in the left-right direction and a long blade length in the front-rear direction, and a triangular movable blade 21 with a wide blade width in the left-right direction and a short blade length in the front-rear direction. The rear part of the movable blade 21 slides left-right in a groove formed by the fixed blade 20 and a cutting blade plate 22 provided above the rear part of the fixed blade 20 and extending left-right. This makes it possible to efficiently cut the bases of many crops.

[0024] As shown in FIGS. 5 and 6, the auger device 3C is composed of an auger frame 30 and a scraping auger 31 mounted on the left and right walls of the auger frame 30.

[0025] The auger frame 30 is formed of a lower wall, a left wall erected on the left part of the lower wall, a right wall erected on the right part of the lower wall, and a rear wall connecting the rear part of the lower wall, the left wall, and the right wall. An inlet (not shown) for transporting crops to the feeder house 3D is formed on the left side of the rear wall. In addition, when viewed from the side, the lower wall of the auger frame 30 is formed in a gentle curved shape that protrudes downward.

[0026] As shown in FIG. 7, the scraping auger 31 is composed of a rotating shaft 32 rotatably mounted on the left and right walls of the auger frame 30 and a cylindrical rotating body 33 supported by the rotating shaft 32.

[0027] A plurality of raking fingers 34A that can freely appear and disappear from the outer circumferential surface are provided on the left side of the outer circumferential surface of the rotor 33. This allows the crops that have gathered in front of the feed opening of the auger frame 30 to be efficiently transported to the feeder house 3D.

[0028] A plurality of conveying spirals 35 are provided on the right side of the outer circumferential surface of the rotor 33, and a raking finger ("right raking finger" in the claims) 34B that can freely appear and disappear on the outer circumferential surface is provided between adjacent conveying spirals 35. This allows the crops transported to the auger frame 30 to be efficiently gathered in front of the feed opening, and also allows the crops transported from the raking reel 10 to the auger frame 30 to be transported to the outer circumferential surface of the rotor 33.

[0029] The bases of the sweeping fingers 34A and 34B are fixed to a support shaft 36 extending in the left-right direction. The support shaft 36 is disposed at a predetermined distance in the radial direction from the rotating shaft 32, and the left and right portions of the support shaft 36 are connected to the rotating shaft 32 via connecting members 37. This allows the tips of the sweeping fingers 34A and 34B to appear and disappear from the outer circumferential surface of the rotating body 33 when the rotating shaft 32 is rotated.

[0030] In addition, in a plan view, the raking finger 34B is provided at the center in the left-right direction of two lifters 43B of a lifter device 40B described later. This allows the crops transported from the raking device 3A to the auger device 3C to be efficiently drawn to the outer circumferential surface of the raking auger 31.

[0031] 4 to 6, a lifter device 40A of the first embodiment is provided on the left front portion of the lower wall of the auger frame 30, and a lifter device 40B of the first embodiment is provided on the right front portion of the lower wall of the auger frame 30. In this specification, the lifter devices 40A and 40B are collectively referred to as the lifter devices 40.

[0032] The lifter device 40A is composed of a support member 41A provided on the upper surface of the lower wall of the auger frame 30, a rotating shaft ("left rotating shaft" in the claims) 42A rotatably fixed to the support member 41A and extending in the left-right direction, and two lifters ("first lifters" in the claims) 43A fixed to the rotating shaft 42A and provided at a predetermined interval in the left-right direction. In addition, in a side view, the lifter 43A is formed with a rear upward inclination. This allows the tip of the lifter 43A to move efficiently in the up-down direction along the unevenness of the field.

[0033] In addition, when viewed from the front, it is preferable to position the left lifter 43AL arranged on the left side of the two left lifters ("first left lifter" in the claims) 43AL and right lifter ("first right lifter" in the claims) 43AR at the center in the left-right direction of the crawler arranged on the left side of the traveling device 2. This allows the operator to align the left lifter 43AL, which can be seen from the control unit 5, with the center of the ridges in the field, as shown in Fig. 8, and to make the crawler ("left crawler" in the claims) 2A arranged on the left side of the traveling device 2 travel along the ridges, thereby efficiently harvesting crops in the field.

[0034] The left part of the rotating shaft 42A extends leftward beyond the left wall of the auger frame 30, and a measuring member 44 extending rearward is provided on the left part of the rotating shaft 42A, and a sensor 45 is provided on the rear part of the measuring member 44 to detect the amount of vertical movement of the rear part of the measuring member 44. This makes it possible to measure the unevenness of the field via the lifter device 40A, and allows the crawlers of the traveling device 2 to travel efficiently along the ridges on which crops are planted.

[0035] Also, a lifting device (not shown) such as a hydraulic cylinder that moves the feeder house 3D up and down according to the measurement value of the sensor 45 is driven to move the pre-harvest processing device 3 up and down. This makes it possible to prevent the lifter 43A from crashing into the field.

[0036] The lifter device 40B is composed of a support member 41B provided on the upper surface of the lower wall of the auger frame 30, a rotating shaft ("right rotating shaft" in the claims) 42B rotatably fixed to the support member 41B and extending in the left-right direction, and two lifters ("second lifters" in the claims) 43B fixed to the rotating shaft 42B and provided at a predetermined interval in the left-right direction. In addition, in a side view, the lifter 43B is formed with a rear upward inclination. This allows the tip of the lifter 43B to move efficiently in the vertical direction along the unevenness of the field. In this specification, the support member 41A and the support member 41B are collectively referred to as the support member 41, the rotating shaft 42A and the rotating shaft 42B are collectively referred to as the rotating shaft 42, and the lifter 43A and the lifter 43B are collectively referred to as the lifter 43.

[0037] In addition, when viewed from the front, it is preferable to position the right lifter 43BR arranged on the right side of the two left lifters ("second left lifter" in the claims) 43BL and right lifter ("second right lifter" in the claims) 43BR at the center in the left-right direction of the crawler arranged on the right side of the traveling device 2. This allows the operator to align the right lifter 43BR, which can be seen from the control unit 5, with the center of the ridges in the field, as shown in Fig. 8, and to make the crawler ("right crawler" in the claims) 2B arranged on the right side of the traveling device 2 travel along the ridges, thereby efficiently harvesting crops in the field.

[0038] Like the rotating shaft 42A, the right part of the rotating shaft 42B can be extended to the right of the right wall of the auger frame 30, and a measuring member extending rearward can be provided on the right part of the rotating shaft 42B, and a sensor can be provided at the rear of the measuring member to detect the amount of vertical movement of the rear part of the measuring member.

[0039] 9 and 10, the lifter 43A is formed from an upper lifter 46A made of round steel or the like, a lower lifter 47A made of round steel or the like, and a connecting member 48A made of round steel or the like that connects a rear lower part of the upper lifter 46A and an upper front end part of the lower lifter 47A. This makes it possible to prevent crops planted in the field from becoming entangled in the lifter 43A.

[0040] A tip lifter 49A made of round steel or the like having a smaller diameter than the upper lifter 46A is provided at the tip of the upper lifter 46A. In a side view, the front side of the tip lifter 49A is formed with a steeper upward rearward inclination than the upper lifter 46A, and the rear part of the tip lifter 49A is fixed to the upper surface of the front part of the upper lifter 46A, and the front part of the tip lifter 49A is formed with an upward rearward inclination with an inclination angle larger than that of the upper lifter 46A. As a result, when the lifter 43A hits a convex part of the field, the tip lifter 49A deforms, and deformation of the upper lifter 46A can be suppressed.

[0041] The tip of the tip lifter 49A is formed into a spherical sphere 50A having a predetermined diameter. This makes it possible to prevent the tip of the tip lifter 49A from plunging into a convex part of the field. In addition, a sled 51A that abuts against the field surface is provided at the lower part of the tip lifter 49A and the front part of the connecting member 48A. In addition, the lower part of the sled 51A is formed on a circular arc in a vertical cross section in the left-right direction. This makes it possible to smoothly move the upper lifter 46A in the front-rear direction along the unevenness of the field.

[0042] As shown in Figs. 9 and 11, the lifter 43B is formed of an upper lifter 46B made of round steel or the like, a lower lifter 47B made of round steel or the like, and a connecting member 48B made of round steel or the like that connects the rear lower part of the upper lifter 46B and the upper front end part of the lower lifter 47B. This makes it possible to prevent crops planted in the field from becoming entangled in the lifter 43B. In this specification, the upper lifter 46A and the upper lifter 46B are collectively referred to as the upper lifter 46, the lower lifter 47A and the lower lifter 47B are collectively referred to as the lower lifter 47, and the connecting member 48A and the connecting member 48B are collectively referred to as the connecting member 48.

[0043] The tip of the upper lifter 46B is provided with a tip lifter 49B made of round steel or the like having a smaller diameter than the upper lifter 46B. In a side view, the front side of the tip lifter 49B is formed with a steeper rear upward inclination than the upper lifter 46B, and the rear part of the tip lifter 49B is fixed to the upper side surface of the front part of the upper lifter 46B, and the front part of the tip lifter 49B is formed with a rear upward inclination with an inclination angle larger than the rear upward inclination of the upper lifter 46B. As a result, when the lifter 43B hits a convex part of the field, the tip lifter 49B deforms to suppress deformation of the upper lifter 46B. In this specification, the tip lifter 49A and the tip lifter 49B are collectively referred to as the tip lifter 49.

[0044] The tip of the tip lifter 49B is formed into a spherical sphere 50B having a predetermined diameter. This makes it possible to prevent the tip of the tip lifter 49B from plunging into a convex part of the field. In addition, a sled 51B that abuts against the field surface is provided at the lower part of the tip lifter 49B and the front part of the connecting member 48B. Note that the lower part of the sled 51B is formed on a circular arc in a vertical cross section in the left-right direction. This makes it possible to smoothly move the upper lifter 46B in the front-rear direction along the unevenness of the field. Note that in this specification, the sphere 50A and the sphere 50B are collectively referred to as the sphere 50, and the sled 51A and the sled 51B are collectively referred to as the sled 51.

[0045] Of the two lifters 43B, the upper lifter 46B of the right lifter 43BR has a larger rear-up inclination angle than the upper lifter 46B of the left lifter 43BL. That is, in a side view, the front end of the upper lifter 46B of the right lifter 43BR and the front end of the upper lifter 46B of the left lifter 43BL are formed at the same position, and the rear end of the upper lifter 46B of the right lifter 43BR is formed at a position higher than the rear end of the upper lifter 46B of the left lifter 43BL. This makes it possible to efficiently gather the crops in front of the feed opening of the auger frame 30 by causing the crops transported from the raking device 3A to fall to the left and preventing the crops from getting entangled in the right wall of the auger frame 30.

[0046] 12 shows another configuration of the tip lifters 49A, 49B. In a side view, the rear inclination angle K2 of the tip lifters 49A, 49B is formed to be a rear-upward inclination angle that is steeper than the rear-upward inclination angle K1 of the upper lifters 46A, 46B. In addition, the front inclination angle K3 of the tip lifters 49A, 49B is formed to be a rear-upward inclination angle that is gentler than the rear inclination angle K2 of the tip lifters 49A, 49B.

[0047] Also, the inclination angle K3 of the tip lifters 49A, 49B may be set so that the front portions of the tip lifters 49A, 49B are approximately parallel to the field surface during work travel.

[0048] Further, at the tip portions of the tip lifters 49A, 49B, cut surfaces are formed so as to form a front upward inclination angle K4 with respect to the field surface during work travel.

[0049] This makes it possible to prevent the leading end lifters 49A, 49B from crashing into the field surface.

[0050] As described above in the configuration of Figures 9 to 11, the lower part of the tip lifter 49A, 49B and the front part of the connecting member 48A, 48B are provided with the sleds 51A, 51B that come into contact with the field surface. The parts of the sleds 51A, 51B that come into contact with the field surface have widths WA, WB, and are T-shaped when viewed from the front. The thickness of the sleds 51A, 51B decreases due to contact with the field surface, and there is a possibility that the sleds may deform due to deterioration over time. The sleds 51A, 51B are fixed to the lower part of the tip lifter 49A, 49B and the connecting member 48A, 48B by welding, so the lifters 43A, 43B must be replaced as an assembly in order to replace the sleds 51A, 51B.

[0051] To solve this problem, the sleds 51AT, 51BT at the T-shaped portions of the sleds 51A, 51B that come into contact with the field surface are configured to be detachable by bolts 60. This makes it easy to replace deteriorated sleds 51AT, 51BT.

[0052] The lifter device 40A and the lifter device 40B are configured to be rotatable in the vertical direction on the rotating shaft 42A and the rotating shaft 42B, respectively. In addition, the lifter device 40A and the lifter device 40B are attached to the rotating shafts 42A and 42B via torque springs 61A and 61B, respectively. This enables the lifter device 40A and the lifter device 40B to follow the unevenness of the field surface. [Explanation of symbols]

[0053] 1 Aircraft frame 2 Running gear 3 Pre-harvest processing equipment 3A Scraping device 3B Cutting blade device 3C Auger Equipment 3D Feeder House 4. Threshing Equipment 30 Ogre Frame 31 Scraping Auger 42A Left rotating shaft 42B Right rotation shaft 43A First Lifter 43B 2nd Lifter 46A, 46B Upper lifter 49A, 49B Tip lifter K1, K2, K3 Rear rising inclination angle 51AT,51BT Sled

Claims

1. A combine harvester having a traveling device (2) provided under a machine frame (1), a pre-harvesting device (3) provided in front of the machine frame (1), and a threshing device (4) provided behind the pre-harvesting device (3), The pre-harvesting treatment device (3) is composed of a raking device (3A) that transports the crops in the field to the rear while standing them up, a cutting blade device (3B) that cuts the bases of the transported crops, an auger device (3C) that gathers the transported crops to one side, and a feeder house (3D) that transports the gathered crops to a threshing device (4), The auger device (3C) is formed of an auger frame (30) that is open at the front and the top, and a raking auger (31) that is installed on the left wall and the right wall of the auger frame (30), A left rotation shaft (42A) and a right rotation shaft (42B) are provided on the upper surface of the lower wall of the auger frame (30) at a predetermined interval in the left-right direction, A pair of first lifters (43A) extending in the front-rear direction are fixed to the left rotating shaft (42A), A pair of second lifters (43B) extending in the front-rear direction are fixed to the right rotating shaft (42B), The first lifter (43A) is composed of an upper lifter (46A) and a tip lifter (49A), and the second lifter (43B) is composed of an upper lifter (46B) and a tip lifter (49B), This combine is characterized in that, when viewed from the side, the rear upward inclination angle (K2) of the rear of the tip lifter (49A, 49B) is formed at a rear upward inclination angle steeper than the rear upward inclination angle (K1) of the upper lifter (46A, 46B), and the front rear upward inclination angle (K3) of the tip lifter (49A, 49B) is formed at a rear upward inclination angle gentler than the rear upward inclination angle (K2) of the rear of the tip lifter (49A, 49B).

2. The combine harvester according to claim 1, characterized in that a tip portion of the tip lifter (49A, 49B) is configured to extend forward of the cutting blade device (3B).

3. A combine harvester as described in claim 1 or 2, characterized in that a sled (51AT, 51BT) that follows the field surface is provided at the bottom of the first lifter (43A) and the second lifter (43B), and the sled (51AT, 51BT) is configured to be freely attached and detached.

Images