JP2013230095A - Grain stalk raising unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain stalk raising unit that can be manufactured at a low cost with a reduction in number of parts by eliminating the need of a conventional independent guide rail.SOLUTION: A grain stalk raising unit (8) includes a front raising case (20a) on the front side and a rear raising case (20b) on the rear side that form a case of the grain stalk raising unit (8); a raising chain (22) mounted in the case and having a raising lug (21); and a driving sprocket (24) and a driven wheel body (25) around which athe raising chain (22) is wound. The front raising case (20a) and the rear raising case (20b) joined facing in front and in the rear are formed with bending guide parts (23) bending mutually facing surfaces into recessed shape at a portion on the raising path side where the raising lug (21) is allowed to stand up, and coming in sliding contact with a sliding part (21a) formed at the base of the raising lug (21) to guide the raising lug (21) upward while holding the raising lug (21) in a standing-up attitude.

Description

  The present invention relates to a grain raising apparatus provided in a combine or the like.

  As a conventional grain raising apparatus, for example, as disclosed in Patent Document 1, the raising lug is raised along the inner side of the raising chain on the raising path side on the left and right sides of the raising case. Some of them are provided with a guide rail that is long in the vertical direction for guiding.

JP 2009-17830 A

In the above-described conventional configuration, the raised guide rail is raised and the separate configuration from the case, so that the number of parts is large and the number of assembling steps is increased and the cost is high.
An object of the present invention is to raise the case itself so that it also serves as a guide rail, thereby reducing the number of parts, increasing the strength, and reducing the weight.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention described in claim 1 includes a front front raising case (20a) and a rear rear raising case (20b) forming a case of the grain raising device (8), and an interior in the case. A grain raising mechanism comprising a pulling chain (22) having a pulling lug (21), a drive sprocket (24) and a driven wheel body (25) around which the pulling chain (22) is wound. In the device (8), the front raising case (20a) and the rear raising case (20b) joined to face each other in the front-rear direction are opposed to each other at a part on the side of the raising path for raising the lug (21). The bent surface is bent in a concave shape and slidably comes into contact with the sliding portion (21a) formed at the base of the lug (21) to raise and guide the lug (21) in an upright position. Specially formed guide (23) And grain 稈引 cause equipment to.

  Since the bending guide portion (23) is formed by bending the front raising case (20a) and the rear raising case (20b) itself, a separate guide rail is not required, and the number of parts can be reduced and the weight can be reduced. It becomes possible.

  According to a second aspect of the present invention, the front raising case (20a) and the rear raising case (20b) are respectively formed in the left and right central portions of the front raising case (20a) and the rear raising case (20b). The culm pulling device according to claim 1, wherein a case of the pulmonary pulling device (8) is formed by overlapping and connecting the flat portions thus formed.

  According to the above configuration, the front raised case (20a) and the rear raised case (20b) are connected by overlapping the flat portions formed at the center portions in the left-right direction. ) And the rear raising case (20b) itself can be increased in strength, and at the same time, intrusion of sawdust can be prevented.

  According to a third aspect of the present invention, in the bending guide portion (23), the lug standing guide portion (G1) that slides and guides the inner surface of the sliding portion (21a) formed on the base portion of the raising lug (21). 2), an outer surface guide part (G2) for regulating the position of the outer surface of the sliding part (21a), and an upper surface guide part (G3) for regulating the position of the outer surface of the sliding part (21a). It is set as the grain raising apparatus of Claim 2.

  According to the above configuration, the bending guide portion (23) is bent in the front raising case (20a) and the rear raising case (20b), so that the strength of the case itself of the grain raising device (8) is sufficiently high. It is secured, and the standing posture is stabilized without rattling even in the action of the raising lug (21).

  According to a fourth aspect of the present invention, there is provided a chain guide in which a contact surface with respect to the raising chain (22) is formed in an arc shape at a distal end portion of a tension arm (26) for tensioning the raising chain (22). The apparatus for raising grain according to claim 1, claim 2, or claim 3, wherein the body (27) is integrally provided.

  According to the above configuration, the chain guide body (27) formed in an arc shape is integrated with the tension arm (26), so that it can be replaced with expensive components such as conventional tension sprockets and bearings with a simple configuration and is inexpensive. Can be implemented.

According to a fifth aspect of the present invention, the chain guide body (27) is a grain raising apparatus according to the fourth aspect, wherein the chain guide body (27) is configured in a semicircular arc shape that is vertically symmetrical.
According to the above configuration, during use, only the upper surface side of the chain guide body (27) is raised and slidably contacted with the chain (22), so that the chain guide bodies (27) of the left and right raising devices are exchanged. Thus, the non-working surface on the lower surface side of the chain guide body (27) can be used.

  According to the first aspect of the present invention, the front raising case (20a) and the rear raising case (20b) are bent to form the bent guide portion (23) for raising and guiding the lug (21) upright. Therefore, a separate guide rail as in the prior art is not required, the number of parts can be reduced, and it can be manufactured at a low cost, and the weight of the pulling device can be reduced.

  According to the invention of claim 2, in addition to the effect of claim 1, the front raising case (20a) and the rear raising case (20b) are divided into the front raising case (20a) and the rear raising case. Since the flat portions formed in the left and right direction central portion of (20b) are overlapped and connected to each other, it is possible to increase the strength of the case itself of the grain raising device (8) and at the same time prevent the intrusion of the sawdust. can do.

  According to invention of Claim 3, in addition to the effect of Claim 1 or Claim 2, the intensity | strength of the case itself of the grain raising apparatus (8) can be further increased, and the raising lug (21) Even in the above operation, it is possible to guide standing while maintaining a stable posture without rattling.

  According to the invention of claim 4, in addition to the effect of claim 1 or claim 2 or claim 3, the arc-shaped chain guide body (27) for tensioning the raising chain (22) is provided with the tension arm ( 26), it can be implemented at low cost with a simple configuration in place of expensive components such as conventional tension sprockets and bearings.

  According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, when the upper surface side of the chain guide body (27) is extremely worn due to long-term use, the left and right grain raising devices (8 ) Of the chain guide body (27) is exchanged, the non-working surface on the lower surface side of the chain guide body (27) can be used, and the durability can be improved.

Combine side view Front view of main parts of combine harvester Front view of the main part of the grain raising device Top view of the main part Side view of the main part SS sectional view of FIG. Front view of main parts of pulling device Cross sectional view of the main part Front view of main parts of pre-cutting processing unit Plan view of the main part of the cutting part (A) Perspective view of the raising side cover, (B) Front view of the raising device, (C) Front view of the raising device Front view of the main part of the combine (A) Plan view of the main part of the cutting part when sliding left, (b) Plan view of the main part of the cutting part when sliding right Plan view of the main part of the cutting part Front view of main parts of pre-cutting processing unit Plan view of the take-up conveyor Exploded perspective view of erecting case and lug standing guide rail

An embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a configuration example of a combine. This traveling vehicle body 1 includes a pair of left and right traveling crawlers 2 and 2, and a cutting portion 4 is provided at the front portion of a threshing device 3 mounted on the rear portion. Installed on the side of the mowing unit 4 is equipped with operation parts such as the driver's seat 5 and the operation box 6, and further equipped with a Glen tank T for temporarily storing threshing grains behind the operation part. doing. In FIG. 1, 14 indicates a steering lever, and 15 indicates a speed change lever.

  The mowing unit 4 is a herbaceous body 7, 7 that splits the napped cereal to the left and right, a cereal elevating device 8 that elevates the cereal after weeding, and a clipper type that cuts the cereal after erecting Cutting blade device 9, scraping and transporting device 10 for scraping and transporting the harvested culm, lifting and transporting the culm after transporting and transporting it to the threshing feed chain 12 of the rear threshing device 3 A vertical cutting frame 17 which is composed of a cutting grain conveying device 11 and the like and which can be moved up and down vertically with a cutting input shaft installed in the horizontal direction as a fulcrum and provided in the front-rear direction, and a horizontal direction at the tip of the vertical cutting frame It is equipped with the cutting horizontal frame 18 provided along. A vertical cutting shaft is housed in the vertical cutting frame 17 and is interlocked to drive the horizontal cutting shaft in the horizontal cutting frame 18.

The weed body 7 is mounted and supported by a weed support frame 13 projecting forward from the cutting blade side.
The pulling device 8 includes front and rear pulling cases 20a and 20b (front pulling case 20a and rear pulling case 20b), a pulling chain 22 with a pulling lug 21 mounted on the interior of the case, The driving sprocket 24 and the driven wheel body 25 for winding the raising chain 22, the tension arm 26 for raising and holding the chain 22 in tension, the chain guide body 27, and the like are configured.

  The front raising case 20a and the rear raising case 20b opposed to each other in the front and rear are formed by bending the surfaces facing each other in a concave shape on the side of the raising path where the raising lug 21 is raised and shifted in the horizontal direction. A bent guide portion 23 is formed that slides into contact with the sliding portion 21a formed at the base of the raising lug 21 and guides the raising lug 21 while maintaining the standing posture. Then, the front raising case 20a and the rear raising case 20b are joined by overlapping the flat portions formed respectively at the center portions in the left and right direction of the front raising case 20a and the rear raising case 20b, and bolted. Thereby, it is comprised so that the case of the grain raising apparatus 8 may be formed.

  Further, the bent guide portion (23) is a lug standing guide that slides and guides the lower surface side (inner side surface) of the sliding portion 21a formed on the base portion of the lug 21 to the cases 20a and 20b. It is formed by a part G1, an outer surface guide part G2 for regulating and guiding the outer surface side (outer surface) of the sliding part 21a, and an upper surface guide part G3 for regulating and guiding the upper surface side of the sliding part 21a. In short, the guide is regulated and guided by the bending guide portion 23 in a state in which the sliding portion 21a formed at the base portion of the lug 21 is inserted.

  The tension arm 26 is pulled up by a tension spring 28 and is held under tension on the chain 22 side. The chain guide body 27 is configured in a vertically symmetrical semicircular arc shape, and when the upper half working surface R1 is worn, the lower half non-working surface R2 can be used. In other words, the lower half non-operation surface R2 can be used by exchanging the chain guide 27 integrated with the tension arm 26 with that of the left and right pulling devices.

Next, the embodiment shown in FIGS. 9 and 10 will be described.
In the double-cutting type combine, the cut horizontal frame 18 that connects the left and right weed support frames 13L and 13R is formed by a square tube, and a remote control narrow guide cable 30, an ACD harness 31 and an oiling hose are included in the square tube. It is arranged and configured to protect it through the like. A space portion S is provided between the right outlet end portion 18R of the square tube 18 and the right weed support frame 13R, and is connected so as to be received by the connecting plate 32 to prevent external protection and downward drooping. ing.

  In the example of FIG. 9, the pulling device on the left side is one in which one driven wheel 25 is installed in the lower part in the case. The two driven wheel bodies 25a and 25b are constructed so as to be raised and the working range in the left-right direction of the lug is increased.

  The vertical vertical axis provided in the middle portion of the weed support frame 13R so that the tip side of the right and left weed bodies 7L and 7R rotates toward the left inner side or the right outer side only on the right weed body 7R side. It is pivotally pivoted around. Therefore, when the right weed body 7R is turned to the left inner side, the normal cereal for one row is introduced, and when turned to the right outer side, two cereals are introduced. It has come to be.

  As shown in the examples of FIGS. 11A, 11B, and 11C, the raising side cover 33 is configured to be divided into upper and lower parts so as to be composed of an upper cover 33U and a lower cover 33D, and both can be attached. The lower cover 33D is dedicated as a shape 33D1 and 33D2 according to the lug movement trajectory for one and two driven wheel bodies, and the upper cover 33U is shared regardless of one or two driven wheel bodies It is set as the structure which becomes.

  The left and right traveling crawlers 2 and 2 shown in the example of FIG. 12 are configured to be slidable to the left and right by the expansion and contraction operation of the left and right slide mechanism and the crawler slide cylinder 34. It is configured so that the crawler moves to a position outside the cutting width to prevent falling and subsidence. Yes.

  In the example of FIGS. 13A and 13B, the cutting part is configured to slide in the horizontal direction by the expansion and contraction operation of the cutting slide cylinder 35, and when the cutting part is slid to the left (see FIG. 13A). ) Pulls the interlocking wire 37 (or a link) by the operation of the right sensor 36R, and the right weed body 7R rotates inward to the closed position. On the contrary, the left weed body 7L is removed by the action of the return spring. It turns to the “open” position.

  When the mowing part slides to the right (see FIG. 13B), the interlocking wire 37 is pulled by the operation of the left sensor 36L, and the left weed body 7L rotates inward to the “closed” position. The weed body 7R is interlocked so as to rotate outwardly (return to the outward rotational position by the action of the return spring 38) to the “open” position.

In the embodiment shown in FIG. 14, the right cutting body 7R is disposed within the left-right movement range L and straddles the right end of the cutting blade 9 so as to prevent cutting twice and uncut shears. ing.
In the example of FIG. 15, when the right weed body 7 </ b> R is moved to the left side and is “closed”, the right weed body is arranged so that it can move to the position where it overlaps with the outer driven wheel body 25 b of the right pulling device. It is possible to prevent the stock from being stepped over at the “open” and “closed” positions, and to stop the lateral feed action caused by the lug when closed and to prevent the stock from falling down.

  In the example of FIG. 15, when the four-row cutting is performed with the two-row cutting type, two cereals are introduced between the middle weed body 7C and the left weed body 7L at the last minute. Since the facing is arranged on the right side from the center, it is desirable that the upper end of the middle weed body 7C is inclined to the left side, and the left weed body 7L is arranged with the upper end side inclined to the right side.

The example of FIG. 16 relates to a cutting device scraping device in a small four-row cutting combine with a short overall length, and has the following configuration.
A pair of left and right raked star foils 40a and 40b are provided on the left side as a rake device 40 for scraping the harvested cereals backward, and a pair of left and right raked star wheels 40c and 40d are provided facing each other on the right side. The outer diameter of the scratching star wheel 40d is smaller than the leftmost scratching starfoil 40a, the scratching starfoil 40c facing the scratching starfoil 40d is substantially the same diameter, and the leftmost stirring starfoil 40d Only the outer diameter of 40a is made larger than the other outer diameters, and the outer diameter of the facing star wheel 40b facing the outer diameter is made smaller than that so as to be approximately the same diameter as the right-handed stirring star wheels 40c and 40d. Then, the driven star wheel 40c is disposed at a position closer to the front side than the other star wheels so that the transport angle θ of the rear transport device 41 that takes over the cereals after being scraped and transports them backward is not so large. ing. Thereby, the picking-up and transporting ability is improved, and the winding around the picking-up star wheel 40c is alleviated.

  In the example of FIG. 17, the lug standing guide rail 42 that is detachably mounted in the pulling case 20 is configured to be adjustable in three stages for the short rod, the intermediate, and the standard. In other words, if the guide rail 42a at the starting end side is used for a short rod, the guide rail 42b is added to the upper end of the short rod guide rail 42a to be used as an intermediate, and the intermediate guide rail 42b is removed and removed. It can be used as a standard by replacing it with a longer guide rail 42c.

8 Grain raising device 20a Front raising case 20b Rear raising case 21 Pulling lug 21a Sliding part 22 Pulling chain 23 Bending guide part 24 Drive sprocket 25 Driven wheel body 26 Tension arm 27 Chain guide body G1 Lug standing guide Part G2 Outer surface guide part G3 Upper surface guide part

Claims (5)

  A front raising case (20a) on the front side and a rear raising case (20b) on the rear side forming a case of the grain raising device (8), and a raising lug (21) installed in the case are provided. In the grain raising apparatus (8) composed of the raising chain (22), the drive sprocket (24) and the driven wheel body (25) that winds the raising chain (22), they face each other in the front-rear direction. In the front raising case (20a) and the rear raising case (20b) to be joined together, the surfaces facing each other in the raising path side for raising the lug (21) are bent in a concave shape, Forming the bending guide portion (23) that slides into contact with the sliding portion (21a) formed at the base of the raising lug (21) and guides the raising lug (21) in an upright position. A cereal wake-up device.   The front erecting case (20a) and the rear erecting case (20b) are overlapped by flat portions formed at the center portions in the left-right direction of the front erecting case (20a) and the rear elevating case (20b), respectively. 2. The corn straw raising device according to claim 1, wherein a case of the corn straw raising device (8) is formed by connecting together.   The bending guide portion (23) includes a lug standing guide portion (G1) that slides and guides the inner surface of the sliding portion (21a) formed at the base of the raised lug (21), and a sliding portion (21a). 3. The cereal induction according to claim 1, further comprising an outer surface guide part (G2) for regulating the position of the outer surface of the outer surface) and an upper surface guide part (G3) for regulating the position of the outer surface of the sliding part (21a). Equipment.   A chain guide body (27) formed so that a contact surface with respect to the pulling chain (22) has an arc shape is integrally formed at a tip end portion of a tension arm (26) for tensioning the pulling chain (22). The apparatus for raising cereals according to claim 1 or claim 2 or claim 3 provided.   The grain raising apparatus according to claim 4, wherein the chain guide body (27) is configured in a semicircular arc shape that is vertically symmetrical.

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