Combine harvester pre-harvesting treatment equipment

Abstract

The present invention aims to eliminate the need for a guide body installed in front of the reel cylinder that raises and lowers the reel in a combine harvester pre-harvesting device, thereby enabling smooth loading of harvested grain stalks into the threshing device. [Solution] In a combine harvester, a pre-harvesting device 3 is provided at the front of the machine frame 1, and a raking arm 52 that pivotally supports the raking reel 3A of the pre-harvesting device 3 is raised and lowered relative to the pre-treatment frame 56 by the extension and retraction of a raking lifting cylinder 54, the pre-harvesting device for a combine harvester is characterized in that, in a side view, the raking lifting cylinder 54 is provided on the outer circumferential trajectory 45e drawn by the conveying spiral 45 of the auger device 3C.

Description

Technical Field

[0001] The present invention relates to a combine that harvests grain culms growing in a field with a pre-harvest treatment device provided at the front of the machine body, sends the harvested grain culms to a threshing device mounted on the machine body for threshing, and harvests the threshed grains in a grain tank.

Background Art

[0002] The pre-harvest treatment device of a combine is described in Japanese Patent Application Laid-Open No. 2017-148000. This pre-harvest treatment device cuts the base of the grain culm with a cutting blade device while scraping the tip side of the grain culm with a reel (scraping-in device), horizontally feeds it to a feeder house with an auger device, and then sends it from the feeder house to a threshing device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the pre-harvest treatment device, the cutting frame is pivotally attached to the machine body frame so as to be able to move up and down, and a reel frame that pivotally supports a reel is pivotally attached to the cutting frame, and the reel frame is moved up and down by the expansion and contraction of a reel cylinder provided between the cutting frame and the cutting frame. Therefore, it is necessary to prevent the tip side of the grain culm scraped by the reel from getting caught in the reel cylinder, and a guide body is provided in front of the reel cylinder to guide the tip of the grain culm away from the reel cylinder.

[0005] An object of the present invention is to eliminate the need for a guide body provided in front of a reel cylinder that raises and lowers a reel in a pre-harvest treatment device of a combine and to smoothly take in harvested grain culms into a threshing device.

Means for Solving the Problems

[0006] The problems of the present invention described above are solved by the following technical means.

[0007] The invention of claim 1 is a combine harvester pre-harvesting device provided on the front of the machine frame 1, wherein a raking arm 52 that pivotally supports the raking reel 3A of the pre-harvesting device 3 is raised and lowered relative to the pre-treatment frame 56 by the extension and retraction of a raking lifting cylinder 54, characterized in that, in a side view, the raking lifting cylinder 54 is provided on the outer circumferential trajectory 45e drawn by the conveying spiral 45 of the auger device 3C.

[0008] The invention of claim 2 is a combine harvester pre-harvesting device provided on the front of the machine frame 1, wherein a raking arm 52 that pivotally supports the raking reel 3A of the pre-harvesting device 3 is raised and lowered relative to the pre-harvesting frame 56 by the extension and retraction of a raking lifting cylinder 54, characterized in that, in a side view, the raking lifting cylinder 54 is positioned on the tip trajectory 46e drawn by the raking fingers 46 of the auger device 3C.

[0009] The invention of claim 3 is a pre-harvesting device for a combine harvester according to claim 1 or 2, characterized in that the corner portion 50a of a reinforcing arm 53 provided on the lower side of the raking arm 52 that pivotally supports the raking reel 3A is smoothly inclined from front to rear. [Effects of the Invention]

[0010] In the invention of claim 1, as soon as the tip of the grain stalk being transported by the auger device 3C comes into contact with the raking lift cylinder 54, the conveying spiral 45 begins to rake the grain stalk, thus preventing stagnation in transport and clogging. Furthermore, by positioning the raking lift cylinder 54 in front of the conveying spiral 45, the tip of the grain stalk comes into contact with the raking lift cylinder 54 first, preventing the grain stalk from getting caught behind the raking spiral. This prevents transport stagnation and clogging even when a large amount of grain stalk is being transported. For this reason, there is no need to provide a guide body in front of the raking lift cylinder 54 to deflect the tip of the grain stalk, thus simplifying the configuration.

[0011] In the invention of claim 2, the grain stalks to be fed into the feeder house 3D by the raking fingers 46 of the auger device 3C are fed in before they hit the raking lifting cylinder 54.

[0012] In the invention of claim 3, even if the heads of the grain stalks being sent from the auger device 3C to the feeder house 3D come into contact with the reinforcing arm 53 of the raking arm 52, they will slide without getting caught on the inclined surface of the corner portion 50a. This prevents the threshing of the rice grains. [Brief explanation of the drawing]

[0013] [Figure 1] This is a top perspective view of a combine harvester according to an embodiment of the present invention. [Figure 2] This is a front view of a combine harvester. [Figure 3] This is a left side view of a combine harvester. [Figure 4] This is a plan view of a combine harvester. [Figure 5] This is a rear view of the combine harvester. [Figure 6] This is a rear view of the combine harvester. [Figure 7] This is a side cross-section of a threshing machine. [Figure 8] This is a right rear perspective view of the combine harvester. [Figure 9] This is a close-up perspective view of the right rear of the combine harvester. [Figure 10] This is a side view of the pre-harvesting treatment device. [Figure 11] This is a front view of the pre-harvesting treatment device. [Modes for carrying out the invention]

[0014] Hereinafter, embodiments of the present invention will be described with reference to the examples shown in the drawings. In the description of the embodiments, the left and right directions in the forward direction of the machine will be referred to as left and right, respectively, the forward direction will be referred to as forward and the reverse direction as backward, but this does not limit the configuration of the present invention.

[0015] As shown in FIGS. 1 to 6, the general-purpose combine of the present embodiment is provided with a traveling device 2 composed of a pair of left and right crawlers that travel on the soil surface on the lower side of the machine body frame 1, and a pre-harvest treatment device 3 for harvesting the cereal straws in the field is provided on the front side of the machine body frame 1. A threshing device 4 for threshing and sorting the harvested cereal straws is provided on the left rear side of the pre-harvest treatment device 3, and an operator cab 5 on which an operator rides is provided on the right rear side of the pre-harvest treatment device 3.

[0016] An engine room 6 in which an engine is installed is provided on the lower side of the operator cab 5, a grain tank 7 for storing the threshed and sorted grains is provided on the rear side of the operator cab 5, and a discharge auger 8 for discharging the grains to the outside is provided on the rear side of the grain tank 7.

[0017] The pre-harvest treatment device 3 includes a raking reel 3A that conveys the cereal straws in the field to the rear while standing them up, a cutting blade device 3B that cuts the roots of the cereal straws conveyed to the lower rear part of the raking reel 3A, an auger device 3C that gathers the cereal straws conveyed to the rear side of the raking reel 3A to the left side, and a feeder house 3D that conveys the gathered cereal straws to the threshing device 4.

[0018] The discharge auger 8 is formed by a vertical discharge part 8A in which a conveying spiral extending in the vertical direction is installed on the rear side of the grain tank 7, a horizontal discharge part 8B in which a conveying spiral extending from the upper part of the vertical discharge part 8A toward the front left side is installed, and a discharge part 8C for discharging the grains at the front end of the horizontal discharge part 8B.

[0019] A sun visor 30 is provided on the upper side of the operator cab 5. Thereby, it is possible to prevent direct sunlight from hitting the operator in the operator cab 5 and rain from falling on the operator.

[0020] As shown in FIG. 6, the sun visor 30 is supported movably in the vertical direction by a support member 31 extending in the vertical direction provided on the front wall of the grain tank 7. Thereby, the installation position of the sun visor 30 can be adjusted according to the build of the operator.

[0021] As shown in Figure 7, the threshing apparatus 4 consists of a threshing chamber 10 for threshing the grain stalks and a sorting chamber 20 for sorting the threshed grains.

[0022] Threshing drums 11 for threshing stalks transported from the feeder house 3D are mounted on the front and rear walls of the threshing chamber 10. Below the threshing drums 11, a receiving net 12 is provided, formed in a semi-circular shape along the lower outer circumference of the threshing drum 11. The upper part of the threshing drum 11 is covered with an openable and closable threshing drum cover 13, and a dust-feeding plate is provided on the inner circumference of the threshing drum cover 13 to guide the stalks to the rear of the threshing chamber 10. The threshing drum 11 is supported by a rotor shaft 14 that extends in the front-rear direction.

[0023] At the top of the sorting chamber 20 is an oscillating sorting device 21 that sorts the grains leaking down from the handling chamber 10. At the bottom of the oscillating sorting device 21, in order from the front, are a winnowing machine 25 that blows sorting air into the oscillating sorting device 21, a wind splitter 26 behind the winnowing machine 25 that changes the direction of the sorting air, a first spiral 27 that transports the grains leaking down from the oscillating sorting device 21 to the grain tank 7, and a second spiral 28 that transports grains with attached branches and stems, as well as broken stalks, etc., that leak down from the rear of the oscillating sorting device 21 to the sorting rack at the front of the oscillating sorting device 21.

[0024] As shown in Figure 5, etc., a protective cover 36 is provided at the lower part of the vertical discharge section 8A of the discharge auger 8, covering an electric motor 35 that rotates a gear formed on the outer circumference of the vertical discharge section 8A. This allows the electric motor 35 to rotate the vertical discharge section 8A in a clockwise or counterclockwise direction in a view centered on the axis extending in the vertical direction of the vertical discharge section 8A.

[0025] As shown in Figures 8 and 9, the upper part of the vertical discharge section 8A and the rear part of the horizontal discharge section 8B of the discharge auger 8 are connected via a connecting section 40. The connecting section 40 is formed from a right connecting section 40A extending upward to the left from the upper part of the vertical discharge section 8A, a left connecting section 40B extending backward to the right from the rear of the horizontal discharge section 8B, and a connecting member 40C that rotatably connects the left part of the right connecting section 40A and the right part of the left connecting section 40B.

[0026] A roughly L-shaped suspension member 41 is provided on the right side of the rear of the lateral discharge section 8B. The suspension member 41 is formed by left and right suspension sections 41A and B extending to the right from the lateral discharge section 8B, and a front and rear suspension section 41C extending rearward from the right side of the left and right suspension sections 41A and B.

[0027] A cylinder 42 is provided in the middle of the left and right suspension sections 41A and B, and in the front of the upper part of the vertical discharge section 8A, to raise and lower the front of the lateral discharge section 8B. The rear of the front and rear suspension section 41C is rotatably supported by a pin 43 extending to the right from the right connecting sections 40A and B. As a result, when the rod of the cylinder 42 is extended, the left connecting section 40B rotates counterclockwise in a view along the axis of the connecting section 40 extending in the left and right directions, causing the front of the lateral discharge section 8B to rise. On the other hand, when the rod of the cylinder 42 is retracted, the left connecting section 40B rotates clockwise in a view along the axis of the connecting section 40 extending in the left and right directions, causing the front of the lateral discharge section 8B to descend.

[0028] A restricting member 50 (Figure 9) is provided on the right side of the lateral discharge section 8B at the rear of the upper wall of the grain tank 7 to restrict the rotation of the lateral discharge section 8B. The restricting member 50 is positioned near the pivot point for the vertical rotation of the lateral discharge section 8B, thereby restricting the vertical rotation of the lateral discharge section 8B to a predetermined range.

[0029] The restricting member 50 is fixed to the support member 50D by welding, and the support member 50D is attached to the grain tank 7 with bolts 55 or the like. When the discharge auger 8 is moved to the storage position, the lateral discharge section has momentum, so a large impact occurs when it collides with the restricting member 50. For this reason, the support member 50D is reinforced by increasing its thickness or by adding ribs or the like to the inside of the grain tank 7.

[0030] Figures 10 and 11 show the pre-harvesting device 3. A pre-harvesting frame 56 is pivotally supported on the machine frame 1 by a pivot shaft 57, and the front of the frame is raised and lowered by a pre-harvesting lifting cylinder 58. A raking arm 52 that pivotally supports a raking reel 3A is pivotally supported on the upper front of this pre-harvesting frame 56, and the raking reel 3A is raised and lowered by a raking lifting cylinder 54 erected on the pre-harvesting frame 56. The raking reel 3A uses raking rods 60 arranged in a hexagonal shape on a round side plate 62, and raking poles 61 arranged laterally on top of these rods to pull the ear ends of the grain stalks towards the auger device 3C. A reinforcing arm 53 is integrally attached to the underside of the raking arm 52, with its front and rear ends 53a and 53b inclined to prevent the ear ends of the grain stalks from getting tangled.

[0031] The auger device 3C consists of a raking finger 46 located at the entrance of the feeder house 3D and a conveying spiral 45 that moves laterally from the left and right toward it, sending the grain stalks, which have been cut at the base by the lower cutting blade device 3B, to the entrance of the feeder house 3D. The raking finger 46 rotates eccentrically so as to protrude forward, and its tip trajectory 46e protrudes ahead of the outer circumferential trajectory 45e of the conveying spiral 45, drawing the grain stalks into the feeder house 3D.

[0032] A dust collection fan duct 51 is installed on the top surface of the feeder house 3D to suck up and remove dust generated during transport. [Explanation of Symbols]

[0033] 1. Aircraft frame 3. Pre-harvesting treatment device 3A suction reel 3C Auger Device 45 Conveyor spiral 46. ​​Scratching Finger 46e Tip trajectory 52 scraping arm 53 Reinforcement Arm 53a Corner 54. Scoop-up and lifting cylinder 56 Preprocessing Frames

Claims

1. A combine harvester's pre-harvesting device (3) is provided at the front of the machine frame (1), and a raking arm (52) that pivotally supports the raking reel (3A) of the pre-harvesting device (3) is raised and lowered relative to the pre-treatment frame (56) by the extension and retraction of a raking lifting cylinder (54), characterized in that, in a side view, the raking lifting cylinder (54) is provided on the outer circumferential trajectory (45e) traced by the conveying spiral (45) of the auger device (3C).

2. A combine harvester's pre-harvesting device (3) is provided at the front of the machine frame (1), and a raking arm (52) that pivotally supports the raking reel (3A) of the pre-harvesting device (3) is raised and lowered relative to the pre-treatment frame (56) by the extension and retraction of a raking lifting cylinder (54), characterized in that, in a side view, the raking lifting cylinder (54) is positioned on the tip trajectory (46e) traced by the raking finger (46) of the auger device (3C).

3. The pre-harvesting apparatus for a combine harvester according to claim 1 or 2, characterized in that the corner portion (50a) of the reinforcing arm (53), which is provided on the lower side of the raking arm (52) that pivotally supports the raking reel (3A), is smoothly inclined from front to rear.

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