General-purpose combine

Abstract

To provide a general-purpose combine in which a lifter tip end of a pickup device provided in a reaping pre-treating device of the general-purpose combine moves up and down along unevenness of a field surface, and thereby, harvesting work can continue without thrusting of the lifter tip end deeply to the ground.SOLUTION: A general-purpose combine is provided with a reaping pre-treating device 3 in a front portion of a machine body frame 1 mounted with a thresher 4. A lifter 43 is provided in a raking-in device 3A of the reaping pre-treating device 3 so as to be pivoted by a spindle 42 such that the lifter 43 can move up and down, the lifter 43 extending forward from a reaping blade device 3B. An adjustment bolt 23 for adjusting a tip end position of the lifter 43 is provided so as to contact a reaping blade plate 22 of the reaping blade device 3B from the lifter 43.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a general-purpose combine harvester for harvesting crops such as adzuki beans that are short and prone to falling onto the field. [Background technology]

[0002] A general-purpose combine harvester harvests crops growing in a field using a pre-harvesting device, takes them into a thresher, and collects the threshed crops in a grain tank for harvesting. However, the general-purpose combine described in JP 2010-104331 A not only harvests short growing crops, but also picks up crops that have fallen onto the field using a pickup device and sends them to the thresher for harvesting. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-104331 Summary of the Invention [Problem to be solved by the invention]

[0004] The pickup device of the general-purpose combine is designed to scoop up stalks and other materials on the field surface using a lifter section that protrudes toward the front of the cutting blade device of the pre-harvesting treatment device.If the body of the machine tilts forward due to unevenness in the field, the tip of the lifter section may penetrate deep into the ground and bend or break, so careful maneuvering is required.

[0005] To provide a pickup device provided in a pre-harvest treatment device of a general-purpose combine harvester, which has a lifter tip that can be adjusted up and down along the unevenness of a field surface, thereby enabling harvesting work to be continued without the lifter tip being stuck deep into the ground. [Means for solving the problem]

[0006] The above-mentioned object of the present invention is achieved by the following technical means.

[0007] The invention of claim 1 is a general-purpose combine harvester having a pre-harvest processing device 3 mounted at the front of a body frame 1 equipped with a threshing device 4, characterized in that a lifter 43 extending forward of the cutting blade device 3B is pivoted on a support shaft 42 so as to be able to rise and fall to the raking device 3A of the pre-harvest processing device 3, and an adjustment bolt 23 for adjusting the tip position of the lifter 43 is provided in contact with the cutting blade plate 22 of the cutting blade device 3B from the lifter 43.

[0008] The invention of claim 2 is the general-purpose combine according to claim 1, characterized in that a guide plate 24A that covers the front of the adjustment bolt 23 is provided.

[0009] The invention of claim 3 is the general-purpose combine according to claim 2, characterized in that the left and right side surfaces of the guide plate 24A are expanded laterally from the front to the rear. [Effects of the Invention]

[0010] In the invention of claim 1, the lifter 43 pivoted on the support shaft 42 can be easily adjusted by the adjustment bolt 23 that abuts against the cutting blade plate 22 of the cutting blade device 3B so that its tip approaches the ground just in front of the cutting blade device 3B, preventing the tip of the lifter from piercing deeply into the ground and bending or breaking. Also, the lifter 43 can efficiently pick up and collect crops, such as short crops, that have fallen in the field.

[0011] In the invention of claim 2, the crops scooped up by the lifter 43 are prevented from becoming entangled around the adjustment bolt 23 by the guide plate 24A that covers the front of the adjustment bolt 23.

[0012] According to the invention of claim 3, the crops scooped up by the lifter 43 are guided behind the adjustment bolt 23 by the left and right side surfaces of the guide plate 24A, so that they do not get tangled. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a front view of a general-purpose combine harvester according to an embodiment of the present invention. [Figure 2] FIG. 2 is a right side view of the general-purpose combine. [Figure 3] FIG. 1 is a plan view of a general-purpose combine harvester. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a plan view of the lower part of the pre-harvesting treatment device. [Figure 7] FIG. 2 is an enlarged plan view of the auger frame of the pre-harvest treatment device. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. 2 is a partial front view of the traveling device and the pre-harvest processing device. [Figure 11] FIG. 2 is a right side view of a portion of the pre-harvest treatment device. [Figure 12] FIG. 2 is a front view of a portion of the pre-harvest treatment device. DETAILED DESCRIPTION OF THE INVENTION

[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 device 3 that harvests crops in the field is provided on the front side of the machine frame 1, a thresher 4 that threshers and sorts the harvested crops is provided on the rear left side of the pre-harvesting device 3, and a control unit 5 on which an operator rides is provided on the rear right side of the pre-harvesting device 3. In the general-purpose combine harvester of this embodiment, adzuki beans are assumed to be the crop to be harvested, but the combine harvester can be applied to crops other than adzuki beans.

[0015] 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 crops is provided behind the control unit 5, and a discharge auger 8 that discharges the crops to the outside is provided behind the grain tank 7.

[0016] The pre-harvesting treatment device 3 is composed of a raking device 3A that lifts the crops in the field and transports them to the rear while standing them upright, 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 that have been cut by the cutting blade device 3B and transported to the rear side of the raking device 3A to the left side, and a feeder house 3D that transports the gathered crops (material to be processed) to the threshing device 4.

[0017] The feeder house 3D is a device that connects the auger device 3C and the threshing device 4 and transports the material to be processed to the threshing device 4.

[0018] As shown in FIG. 4, the sweeping device 3A is provided above and in front of the auger frame 30 of the auger device 3C, and is formed to have approximately the same width in the left-right direction as the auger frame 30 that supports the sweeping auger 31.

[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-up reel 10 is formed in an approximately hexagonal shape, and tine support rods 12 extending in the left-right direction are provided at six corners, and multiple reel tines 13 are suspended from the tine support rods 12 at predetermined intervals in the left-right direction.

[0021] A rotary shaft 14 extending in the left-right direction is installed at the front of the arm 11, and the rotary shaft 14 supports the take-up reel 10. 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 arm 11 and the left wall of the auger frame 30 are connected at their intermediate portions 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-to-rear direction, and a triangular movable blade 21 with a wide blade width in the left-to-right direction and a short blade length in the front-to-rear direction. The rear part of the movable blade 21 slides left and right in a groove formed by the fixed blade 20 and a cutting blade plate 22 that is provided above the rear part of the fixed blade 20 and extends left and right. This allows the base of many crops to be cut efficiently.

[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 portion of the lower wall, a right wall erected on the right portion of the lower wall, and a rear wall connecting the rear portion of the lower wall to the left and right walls. An inlet (not shown) for transporting grain crops to the feeder house 3D is formed on the left side of the rear wall. In side view, the lower wall of the auger frame 30 is formed in a gently curved shape that protrudes downward.

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

[0027] A plurality of scraping fingers 34A that can freely appear and disappear from the outer periphery are provided on the left side of the outer periphery of the rotor 33. This allows crops that have gathered in front of the inlet 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 between adjacent conveying spirals 35, raking fingers 34B that appear and disappear on the outer circumferential surface are provided. This allows crops transported to the auger frame 30 to be efficiently gathered in front of the left inlet, and also allows grain 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 sweeping fingers 34A and 34B are fixed to a support shaft 36 extending in the left-right direction. Further, support shaft 36 is provided at a predetermined distance in the radial direction from rotating shaft 32, and left and right portions of support shaft 36 are connected to rotating shaft 32 via connecting members 37. As a result, when rotating shaft 32 is rotated, the tips of sweeping fingers 34A and 34B can be made to protrude and retract from the outer peripheral surface of rotating body 33.

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

[0031] 4 to 6, a left lifter device 40A is provided on the left front portion of the lower wall of the auger frame 30, and a right lifter device 40B is provided on the right front portion of the lower wall of the auger frame 30. In this specification, the left lifter device 40A and the right lifter device 40B are collectively referred to as lifter devices 40, and the lifters 43A and 43B are rod-shaped bodies or iron bands and are collectively referred to as lifters 43.

[0032] The left lifter device 40A is composed of a support member 41A mounted on the upper surface of the lower wall of the auger frame 30, a support shaft 42A rotatably fixed to the support member 41A and extending in the left-right direction, and two lifters 43A fixed to the support shaft 42A and spaced a predetermined distance apart in the left-right direction. Furthermore, in a side view, the lifter 43A is tilted upward at the rear. This allows the tip of the lifter 43A to move up and down efficiently along the unevenness of the field.

[0033] Similarly, the right lifter device 40B is composed of a support member 41B mounted on the upper surface of the lower wall of the auger frame 30, a support shaft 42B rotatably fixed to the support member 41B and extending in the left-right direction, and two lifters 43B fixed to the support shaft 42B and spaced a predetermined distance apart in the left-right direction. Furthermore, in a side view, the lifters 43B are formed with an upward tilt toward the rear. This allows the tip of the lifter 43A to move up and down efficiently along the unevenness of the field.

[0034] 8 and 9, in the left lifter device 40A, a lifter 43A pivoted on a support shaft 42A extends beyond the cutting blade plate 22 to the front of the cutting blade device 3B, and a mounting bracket 24 for attaching an adjustment bolt 23 is provided at the lower middle part. The adjustment bolt 23 is placed on the cutting blade plate 22 so that the tip of the lifter 43A is positioned just above the ground. Also, a guide plate 24A with left and right side surfaces that extend outward from the front is provided at the lower front side of the mounting bracket 24. Furthermore, a substantially horizontal sled plate 25 is provided at the lower part near the tip of the lifter 43A to raise the lifter 43A that is stuck into the ground.

[0035] Therefore, the lifter 43A scoops up the stalks with its tip and lifts them upward and rearward, and then the raking device 3A takes over. The sled 25 prevents the tip of the lifter 43A from digging too deep into the ground, and the guide plate 24A pushes aside the stalks to prevent them from getting tangled around the adjustment bolt 23.

[0036] The right lifter device 40B has the same configuration as the left lifter device 40A.

[0037] In a front view, it is preferable to position the left lifter 43AL, which is arranged on the left side of the two left lifters 43AL and right lifter 43AR, at the center in the left-right direction of the crawler arranged on the left side of the traveling device 2. As a result, as shown in Fig. 10, the operator can align the left lifter 43AL, which can be seen from the control unit 5, with the center of the ridge in the field, and run the crawler 2A arranged on the left side of the traveling device 2 along the ridge, thereby efficiently harvesting crops on the ridge.

[0038] The left portion of the support shaft 42A extends further left than the left wall of the auger frame 30, and a measuring member 44 extending rearward is provided on the left portion of the support shaft 42A, and a sensor 45 is provided on the rear portion of the measuring member 44 to detect the amount of vertical movement of the rear portion of the measuring member 44 (FIG. 4). This makes it possible to measure the unevenness of the field via the left lifter device 40A, and allows the crawlers of the traveling device 2 to travel efficiently along the ridges on which crops are planted.

[0039] Additionally, a lifting device (not shown) such as a hydraulic cylinder that moves the feeder house 3D up and down is driven in accordance with the measurement value of the sensor 45 to move the pre-harvest treatment device 3 up and down. This prevents the lifter 43A from crashing into the field.

[0040] The right lifter device 40B is composed of a support member 41B mounted on the upper surface of the lower wall of the auger frame 30, a support shaft 42B rotatably fixed to the support member 41B and extending in the left-right direction, and two lifters 43B fixed to the support shaft 42B and spaced a predetermined distance apart in the left-right direction. In addition, in a side view, the lifters 43B are formed with an upward tilt toward the rear. This allows the tip of the lifter 43B to efficiently move up and down along the unevenness of the field. In this specification, the support members 41A and 41B are collectively referred to as support members 41, the support shafts 42A and 42B are collectively referred to as support shafts 42, and the lifters 43A and 43B are collectively referred to as lifters 43.

[0041] In addition, when viewed from the front, it is preferable to position the right lifter 43BR, which is arranged on the right side of the two left lifters 43BL and right lifter 43BR, at the center in the left-right direction of the crawler arranged on the right side of the traveling device 2. As a result, as shown in Fig. 8, the right lifter 43BR, which the operator can see from the control unit 5, is aligned with the center of the ridge in the field, and the crawler 2B arranged on the right side of the traveling device 2 travels along the ridge, allowing efficient harvesting of crops in the field.

[0042] Similar to the support shaft 42A, the right part of the support 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 support 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.

[0043] Figure 11 shows a right side view of part of the pre-harvest treatment device. The dashed-dotted circle C1 indicates the trajectory of the tines 13 when the reel 10 is in its rearmost, lowest position. A space S1 is formed between the bottom of the left and right weeding tools B1 and the field surface, extending up to the tip of the cutting blade device 3B. The tine trajectory C1 is located near the tip of the cutting blade device 3B and passes through the space S1. This prevents the left and right weeding tools B1 from pressing down on the crops, allowing the tines 13 to smoothly pull the crops to the cutting blade device 3B and cut them.

[0044] Furthermore, if the bottom surfaces of the left and right weeding tools B1 are made of round bars B1a, the crops slide smoothly, so the weeding and raising actions are performed well, preventing damage to the crops.

[0045] Figure 12 shows a front view of the left part of the pre-harvest treatment device 3. The bottom surface of the weed dividing tool B1 is configured to slope upward from the center of the machine body to the outside of the machine body (clearance angle α). As a result, the weed dividing tool B1 is smoothly pulled in by the tines 13 without pressing down on the crops, and then raised and cut by the cutting blade device 3B. [Explanation of symbols]

[0046] 1 Aircraft frame 3 Pre-harvest processing equipment 3A scraping device 3B Cutting blade device 4. Threshing equipment 22 Cutting blade plate 23 Adjustment bolt 24A Guide plate 42 Spindle 43 Lifter

Claims

1. This general-purpose combine has a pre-harvest processing device (3) mounted on the front of a body frame (1) on which a threshing device (4) is mounted, and is characterized in that a lifter (43) extending forward from a cutting blade device (3B) is pivoted to a raking device (3A) of the pre-harvest processing device (3) by a support shaft (42) so as to be able to rise and fall, and an adjustment bolt (23) for adjusting the tip position of the lifter (43) is provided in contact with a cutting blade plate (22) of the cutting blade device (3B) from the lifter (43).

2. 2. The general-purpose combine harvester according to claim 1, further comprising a guide plate (24A) for covering the front of the adjustment bolt (23).

3. 3. A general-purpose combine harvester according to claim 2, wherein the left and right side surfaces of the guide plates (24A) are expanded laterally from the front to the rear.

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