JP2008000025A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester preventing ear tips from floating up in conveying grain culms from a reaping part to a threshing section and also preventing grain culms from stagnation at the feed port of the threshing section. <P>SOLUTION: The combine harvester where the front portion of its machine body is equipped with the vertically turnable reaping part 7 and the threshing section 4 set behind the reaping part 7 has the following construction: a supporting frame 51 is disposed above behind an ear tip conveying apparatus 37; an ear tip guide 52 is extended from the supporting frame 51 to above the threshing section's feed port 4a; a threshing depth sensor 53 is attached to the supporting frame 51, and the ear tip guide 52 is attached to a plant foot side off the threshing depth sensor 53. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine that harvests cereal grains in a field with a reaping part and threshs the harvested cereal part with a threshing part, and more particularly to a technique for preventing cereals from staying at the threshing inlet.

The cereals harvested by the combine harvester are transported by a stock transport mechanism mechanism such as a transport chain and a tip transport device, and supplied to the threshing unit after the stock is transferred to the feed chain. At that time, as a method of smoothly passing cereals to the threshing feed chain and carrying it into the threshing section, a technique for installing a conveyance guide and a technique for installing a tip feeding device are known (for example, `` Patent Document 1 ”and“ Patent Document 2 ”).
JP 2002-171818 A JP 2006-34133 A

  However, in the above-mentioned prior art and the like, the stock portion of the cereal grains moves while being pinched sequentially, so that the carrying into the threshing portion is performed smoothly, but the tip transport guide is provided along the upper transport body The tip part is free from the conveying device immediately before the threshing section supply port. For this reason, the tip part of the cereals floats up from the mainstream on the back side of the threshing part supply port, and the cereals sometimes stay. Furthermore, when such staying progressed, the supply port to the threshing part was blocked and the cereals were clogged. Further, in the technique of Patent Document 2, the tip side is forcibly conveyed, but the structure is complicated, driving means are required, the cost is increased, and further, the grain is damaged because it is conveyed by a chain. It was.

  The present invention, when conveying the cereals from the reaping part to the threshing part, to prevent the cereal head from rising from the mainstream, and further to prevent the cereals from staying at the threshing part supply port, The present invention provides a combine that can solve the above problems at low cost.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in claim 1,
On the front part of the aircraft, a cutting part that can rotate up and down,
In a combine provided with a threshing part arranged behind the cutting part,
Place the support frame above the rear of the tip transport device,
A tip guide extends from the support frame above the threshing section supply port.

In claim 2,
A handling depth sensor is attached to the support frame, and a tip guide is attached to the stock base side of the handling depth sensor.

In claim 3,
The tip guide is composed of a rod-like member having elasticity.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect, the tip guide presses the tip portion of the transported culm from above, so that the cereal tip can be prevented from rising from the mainstream, and the threshing supply port can prevent the cereal from staying and clogging.

According to the second aspect of the present invention, the support frame that supports the tip guide can also serve as the support for the handling depth sensor, so that the arrangement work can be facilitated and the cost can be reduced. Moreover, since the tip guide is located closer to the stocker side than the handling depth sensor that detects the tip, the tip side can be reliably suppressed.
In addition, since the material of the tip guide is made of an elastic body such as metal or resin by configuring as in claim 3, it is only enough to lightly hold the tip of the harpoon during normal transport, and the transport amount of the culm increases. However, it can be sent to the supply port while holding down the cereals so as not to be damaged. Furthermore, the attachment structure of the tip guide can be simplified, replacement and attachment are easy even when the member is worn or deformed, and the cost can be reduced.

Next, embodiments of the invention will be described. It should be noted that the technical scope of the present invention is not limited to the embodiments, but extends to the entire scope of the technical idea that the present invention really intends, as will be apparent from the matters described in the present specification and drawings. Is.
1 is an overall side view of the combine, FIG. 2 is an overall plan view of the combine, FIG. 3 is a side view of the cutting part, FIG. 4 is a side view around the tip guide, and FIG. 5 is a perspective view of the cutting end and the threshing part supply port. FIG. About R, C, and L described in the code | symbol, it is located in the right, the center, and the left toward the advancing direction of an airframe, respectively.

  As shown in FIGS. 1 and 2, in a combine according to an embodiment of the present invention, a crawler type traveling device 2 is provided on the left and right sides of a track frame 1, and a machine base 3 is disposed on the track frame 1. ing. A threshing section 4 is provided on the machine base 3, and the threshing section 4 is provided with a handling cylinder 5, a feed chain 6 disposed on the side of the handling cylinder 5, and the like. A six-cut mowing unit 7 is provided in front of the threshing unit 4, and a rejection processing unit 8 is provided in the rear. The waste disposal unit 8 is provided with a waste chain 9, which is disposed so that the start end of the waste chain 9 faces the end of the feed chain 6.

  Moreover, the grain tank 10 which carries in the grain from the said threshing part 4 via the whipping cylinder 11 is provided in the side of the threshing part 4, and the grain in the grain tank 10 is behind and above this grain tank 10. A discharge auger 12 for discharging the grains out of the machine is provided. A driving cabin 13 is provided in front of the grain tank 10, a driving operation unit 14 such as a steering handle and a driver seat 15 are provided in the driving cabin 13, and an engine 16 is provided below the driving cabin 13. Thus, the combine is configured to continuously cut the cereals with the reaping unit 7 and thresh with the threshing unit 4 while running and moving in the field by driving the engine 16.

  As for the cutting part 7, as shown in FIG. 3, left and right cutting attachment frames 17 are erected on the front side of the threshing part 4 from the front end of the machine base 3, and a split pipe joint 18 is provided above each cutting attachment frame 17. Is provided. Further, a cutting input case 20 is provided in the cutting unit 7, and a cutting input shaft 19 that transmits power from the engine 16 is inserted into the cutting input case 20. The cutting input case 20 is rotatably and detachably held at the upper ends of the left and right cutting mounting frames 17 via the split pipe joints 18 at both ends thereof, and immediately before the threshing portion 4 in the horizontal direction of the machine body. Horizontally supported horizontally.

  A longitudinal transmission case 21 is integrally extended from the intermediate portion of the cutting input case 20 toward the front obliquely downward direction, and a lateral transmission case 22 is integrally connected to the tip of the longitudinal transmission case 21 at the intermediate portion in the lateral direction of the body. Horizontally supported horizontally. The horizontal transmission case 22 is integrally connected to the horizontal transmission case 22 by a horizontal connection frame 23 at the rear, and is integrally connected in parallel toward the front of the machine body from the horizontal transmission case 22. ing.

  Thus, the cutting input case 20, the vertical transmission case 21, the horizontal transmission case 22, and the cutting frame 24 are integrated into a main frame of the cutting unit 7, and the configuration of the cutting unit 7 to be described later on the main frame. The cutting parts 7 are configured by assembling elements. The cutting unit 7 is configured to move up and down about the cutting input case 20 by expansion and contraction of a hydraulic cylinder 25 stretched between the machine base 3 and the vertical transmission case 21.

  The 6-cut mowing unit 7 includes a pre-treatment mechanism, a scraping mechanism, a mowing mechanism, and a culm transporting mechanism including a cereal stock former transporting mechanism and a corn spear tip transporting mechanism. The pre-processing mechanism erects the seven slaughter boards 27 for separating the cereals to be harvested and the unsheared sorghum and separating each stalk of the reaper to be harvested, and the uncut cereals after weeding. It comprises six pulling cases 29 having six pulling tines 28.

  The staring mechanism 30R, 30C, which is a pair of left and right stirring wheels, which are introduced from between the pulling cases 29 and scrape the roots of the cereal after pulling into one bundle. 30L and a pair of left and right, a pair of protruding belts 31R, 31C, 31L.

  The mowing mechanism is composed of a clipper-shaped mowing blade 32 that simultaneously cuts six stocks of cereal grains when scraped.

  Among the grain haul transport mechanisms, the grain haul stock transport mechanism is obliquely above the stock base portion of the harvested rice bran that has been raked by a set of star wheels 30R, 30C, 30L and the drive belts 31R, 31C, 31L. Stock source merge transport chain 33R, 33C, 33L sandwiched and transported, and the stock base part of the harvested cereal mash for six lines merged by left and right and central stock source merge transport chains 33R, 33C, 33L The stock transport chain 34, which is a vertical transport chain that is inherited from the transport terminal end of the chains 33R, 33C, 33L, and sandwiched and transported upward to the left and behind the left side and transported to the transport start end of the feed chain 6 of the threshing unit 4, It is comprised from the auxiliary | assistant stock former conveyance chain 35 * 36 which conveys and inherits the stock base part of a harvested cereal rice cake with an appropriate attitude | position from the conveyance termination | terminus part of the stock origin conveyance chain 34 to the conveyance start end part of the feed chain 6. FIG.

  On the other hand, the grain tip transport mechanism is a tip transport device 37R, 37C, 37L that latches and transports the tip part of the harvested grain straw holding and transporting the stock part by the stock merge transport chains 33R, 33C, 33L; A rear tip transport device 38 for locking and transporting the head portion of the harvested cereals for six strips that are sandwiched and transported by the stock source transport chain 34 and the auxiliary stock source transport chains 35 and 36, The upper tip of the head of the culm that is introduced from the middle is locked and transported on the opposite side of the tip transport device 37R, 37C, 37L above the transport start end of the tip transport device 37R, 37C, 37L It is comprised from the conveying apparatus 39R, 39C, 39L. In a small combine such as two-row cutting, the tip transfer device 37R, 37C, 37L, the rear tip transfer device 38, the upper tip transfer device 39R, 39C, 39L may be a pair of left and right or one tip transfer device (upper transfer). In some cases, the apparatus is transported as a device.

A support frame 51 is fixed above the end of the cutting portion 7 as shown in FIGS. 4 and 5. In the present embodiment, the support frame 51 is configured as a front view portal, and is a frame that supports both ends of the conveying device of the cutting unit (a cutting frame and a frame that is connected to the vertical transmission case 21; The support frame 51 is fixed with a handle depth sensor 53 and a front end of a tip guide 52 that suppresses the lifting of the tip portion of the cereal of the present invention. The tip guide 52 is fixed to a mounting stay protruding from the support frame 51 by bending the front end into a U-shape and inserting a bolt between them when it is constituted by a rod-shaped member. When the tip guide 52 is formed of a plate-like member, it is fixed directly to the mounting stay with a bolt or the like. The attachment stay can also be used as the attachment stay of the handling depth sensor 53.
The front end position of the tip guide 52 is located above the rear portion of the rear tip transport device 38 (upper transport device) extended to the rearmost portion, that is, above the front position of the rear end, and the left and right positions are the tip of the tip to be transported. It is set as the position where the lower part of the ear comes into contact with the stocker side. However, the support frame 51 may be configured to extend from the cutting part frame as a frame dedicated to the tip guide 52 without being used also as a frame to which the handling depth sensor 53 is attached. In the case where the tip conveying device is configured to rotate up and down, the support frame 51 is attached to the frame that supports the tip conveying device. Further, in the present embodiment, the support frame 51 is a double-sided support, but it can also be a cantilevered support. That is, the support frame 51 is configured in an inverted L shape or “heavy” shape when viewed from the front, and the front end of the tip guide 52 is fixed to a substantially horizontal portion above the rear tip transport device 38 of the support frame 51.
The other end of the tip guide 52 extends in a backward oblique direction toward the supply port 4a of the threshing unit 4, and the rear end is disposed on the threshing supply port 4a.
The tip guide 52 is made of a member having elasticity (flexibility) such as metal or resin and having a small frictional resistance, and may be a rod shape or a flat plate shape as shown in FIGS. 4 and 5. However, the number is not limited to one as long as the lifting is surely suppressed without damaging the grains, and two or more can be provided.

  In the harvesting unit 7 configured as described above, the harvested culm stock is inherited to the feed chain 6 and the culm guide 54 that are transported from the auxiliary stock transport chain 35/36 to the threshing unit 4, It is conveyed in the direction of A in FIG. On the other hand, the grain tip is transferred from the rear tip transport device 38 to the threshing section supply port by the handling depth sensor 53 so that the tip is transported to a predetermined position of the threshing inlet (supply port). The tip guide 52 disposed on the support frame 51 prevents the tip from rising, and even if a large amount of cereal is supplied, it does not stay at the threshing portion supply port 4a in FIG. 5B. , Smoothly carried into the threshing section. About the tip guide 52, at the time of normal conveyance, it is a grade which lightly presses the grain tip, and even if the carrying amount of the grain spike increases, it can be sent to the supply port while being held to the extent that the kernel is not damaged. .

  As described above, the tip guide 52 guides the tip portion of the transported culm from above, thereby preventing the cereal from being raised or clogged at the threshing portion supply port by preventing the groin tip from being lifted. The tip guide 52 and its mounting method are simple in structure, and the support guide frame 51 of the tip guide also serves as the support frame of the handle depth sensor 53, so that when the member is worn or deformed Can be easily replaced and attached, and the cost can be kept low.

The whole side view of a combine. The whole top view of a combine. The side view of a cutting part. The side view around the tip guide. The perspective view of a cutting part termination | terminus and a threshing part supply port.

Explanation of symbols

3 Machine stand 4 Threshing section 6 Feed chain 7 Cutting section 10 Grain tank 12 Discharge auger 13 Operating cabin 35 Auxiliary stock source transport chain 36 Auxiliary stock source transport chain 38 Back tip transport device 52 Ear tip guide 53 Handling depth sensor

Claims (3)

On the front part of the aircraft, a cutting part that can rotate up and down,
In a combine provided with a threshing part arranged behind the cutting part,
Place the support frame above the rear of the tip transport device,
A combine comprising a tip guide extending from the support frame above the threshing section supply port.   The combine according to claim 1, wherein a handle depth sensor is attached to the support frame, and a tip guide is attached closer to the stocker side than the handle depth sensor.   The combine according to claim 1, wherein the tip guide is constituted by a rod-like member having elasticity.

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