JP2010142157A - Reaping device of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reaping device of a combine harvester, capable of operating the combined harvester in a good efficiency by easily capable of maintaining from a raking-in/cutting part placed at the back side and tending to be clogged to a conveying part at the machine body frame side. <P>SOLUTION: This reaping device of the combine harvester is provided by equipping a picking-up device (11) and raking-in/cutting devices (12)(12), pivoting these picking-up device (11) and raking-in/cutting devices (12)(12) with a reaping rotary supporting shaft (13) on the machine body frame as capable of vertically rocking, while reaping planted cereal culms, constituting so as to relay them to the conveying part at the machine frame side and installing an upper supporting frame (14) supporting the picking-up device (11) from upper direction by avoiding the conveying device and a lower supporting frame (15) supporting the raking-in/cutting devices (12)(12) from lower direction each independently at the reaping rotary supporting shaft (13) as capable of vertically rocking. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine harvester.

  As shown in the example of Patent Document 1, the combine of the conventional configuration is provided with a reaping device that can be moved up and down in front of an airframe frame supported by a crawler traveling device, and is located at the front end of the airframe frame. The threshing portion and the storage tank portion are disposed behind the cutting rotation support shaft, and the control unit is disposed on the side of the cutting rotation support shaft.

The reaping device includes a pulling device that pulls up the vegetative cereal and a scraping and cutting device that cuts the stocker side of the raised culm while scraping the pulling device and the scraping and cutting device behind the pulling device. The cutting rotation pivot is positioned so as to swing up and down, and the cutting height is adjusted so as to cut the vegetation grain and deliver the harvested grain to the transport unit.
In addition, the pulling device is arranged side by side with respect to a plurality of cutting strips, and supports the upper portion thereof with a transverse frame, and a part of the pulling device is pivotally supported so that it can be expanded upward, thereby clogging the cereal grains. In such a case, the front side of the reaping device is opened by expanding the pulling device upward, and the cereals clogged in the back side can be removed.
JP 2007-37441 A

  However, the part where the cereals are delivered to the transport section at the back side position of the scraping and cutting device is most likely to be clogged with the multi-row planted cereals, and the pulling device is moved upward to remove the stuffed cereals. Even when deployed, the upper transverse frame that supports the upper part of the pulling device gets in the way, and it is difficult to remove the inner grain from the narrow space below it, so the efficiency of the harvesting work by the combine decreases. was there.

  An object of the present invention is to provide a harvesting device for a combine that can operate the combine efficiently by making it easy to maintain the conveying unit on the machine body frame side from the scraping and cutting part that is likely to clog the cereals on the back side of the raising part. Is to provide.

  The invention according to claim 1 is a pulling device (11) that raises a vegetative cereal mash, and a scraping and cutting device (12) that squeezes and cuts the strainer side of the cereal that is raised by the pulling device (11). And the pulling device (11) and the scissor-cutting device (12) are pivotally supported by a cutting pivot shaft (13) on the fuselage frame so as to swing vertically. In the harvesting device for the combine handed over to the frame-side conveyance unit, the upper support frame (14) for supporting the pulling device (11) from above while avoiding the conveyance unit and the bottom for supporting the scraping and cutting device (12) from below The support frame (15) is provided so as to be able to swing up and down independently with respect to the cutting rotation support shaft (13).

  In the reaping device, the upper support frame (14) and the lower support frame (15), which support the slewing rotation support shaft (13) on the machine frame so as to be swingable up and down, avoid the conveying portion and the pulling device (11 ) Is supported from above and the cutting and cutting device (12) is supported from below, so that the pulling device (11) and the scratching and cutting device (12) are centered around the cutting rotation support shaft (13) in front of the body frame. ) And raising and lowering the vegetative cereals by cutting and cutting and cutting the pulling device (11) and the upper support frame (14). The side can be fully opened.

According to a second aspect of the present invention, in the configuration of the first aspect, the holding mechanism (22) capable of holding the side of the upper support frame (14) including the pulling device (11) in the deployed swing position above the cutting work position. Is provided.
The upper support frame (14) side is held in its position by the holding mechanism (22) when it is unfolded and swung.

According to a third aspect of the present invention, in the configuration of the second aspect, the holding mechanism (22) supports the center position of the full cutting width on the upper support frame (14) side.
Even if the pulling device (11) has a wide configuration corresponding to multiple cutting widths, the pulling device (11) is stably held on the left and right by the holding mechanism (22) supporting the center thereof.

According to a fourth aspect of the present invention, in the configuration of the first aspect, the upper support frame (14) has a transmission mechanism that is synchronously transmitted to the pulling device (11) by a drive shaft coaxial with the cutting rotation support shaft (13). 14a, 14b, 14c) and the transmission mechanism (14a, 14b, 14c) are provided with a transmission cutoff clutch (31).
The pulling device (11) is reliably transmitted from the cutting rotation support shaft (13) by the transmission mechanism (14a, 14b, 14c), while the clutch (31) is reversed by swinging and unfolding of the pulling device (11). The transmission operation can be cut off.

  The reaping device according to the first aspect of the present invention allows the front side of the pulling device (11) and the upper support frame (14) to be opened and swung upward so that the entire front side of the lifting device (11) can be opened. Maintenance of the scraping and cutting device (12) that tends to clog cereals on the back side and the transport unit on the machine body frame side is facilitated, so that the upper support frame (14) of the pulling device (11) is trimmed by the cutting rotation support shaft (13 The efficiency of the mowing work by the combine can be enhanced by a simple configuration pivotally supported on ().

  In the invention of claim 2, in addition to the effect of claim 1, the upper support frame (14) side can be held at the deployment swing position by the holding mechanism, so that the pulling device (11) is stably deployed and held. Maintenance can be performed safely.

  In addition to the effect of claim 2, the invention of claim 3 can support the central position of the full cutting width on the side of the upper support frame (14), so that the pulling device (11) corresponds to multiple cutting widths. Even with a wide configuration, the pulling device (11) can be stably supported and maintenance can be performed safely.

  According to the invention of claim 4, in addition to the effect of claim 1, since the transmission operation of the transmission mechanism can be interrupted by the clutch, the swinging movement on the upper support frame (14) side with respect to the cutting rotation support shaft (13). It is possible to prevent the reverse operation caused by the damage to the pulling device (11).

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
For example, as shown in the side view of the configuration example in FIG. 8, the combine 1 includes a cutting device 4 that can be moved up and down in front of the body frame 3 that is supported by the crawler 2 so as to be able to travel. The threshing section 5 is disposed on the other side, and the storage tank section 6 is disposed on the other side, and the control section 7 is disposed on the front side of the storage tank section 6.

  As shown in FIG. 1, the reaping device 4 is caused by a pulling device 11 that raises a vegetation cereal at the tip position of the machine body and the pulling device. An upper support frame 14 that is configured to include a scraping and cutting device 12 that cuts the stock side of the cereal mash while scraping, and that supports the pulling device 11 from above while avoiding the conveying unit that reaches the threshing unit 5; Similarly, a lower support frame 15 that supports the scraping and cutting device 12 from below is pivotally supported so as to be able to swing up and down independently with respect to the cutting pivot shaft 13 provided at the front end of the machine body frame 3. Thus, the pulling device 11 is configured to be able to be deployed upward together with the upper support frame 14. Each of the upper support frame 14 and the lower support frame 15 is provided with a transmission system so that the cutting rotation support shaft 13 receives the power from the drive shaft having a coaxial configuration, and the pulling support device 11 and the cutting and cutting device 12 are individually connected. To communicate.

  Specifically, as shown in FIG. 2 (a), the pulling device 11 has a side view of the main part of the reaping device 4 and is operated to face each other so as to scoop up the foliage from the left and right with two rotating lugs in a standing posture. The minute units 11a are arranged side by side in the range of the cutting width in the direction A of the aircraft, and the upper ends of the units 11a are supported by the upper transverse frame 21, and the upper support frame 14 is interposed via the upper transverse frame 21. It is composed integrally with. The upper transverse frame 21 constitutes a laterally connected gear case extending in the vehicle width direction, branches the pulling shaft 11b, and transmits and connects the pulling units 11a.

  The upper support frame 14 includes three transmission portions 14a, 14b, and 14c that flexibly transmit the range from the cutting rotation support shaft 13 to the upper transverse frame 21 at the center position of the cutting width. These three transmission parts 14a, 14b, and 14c are configured such that the intermediate transmission part 14b is configured in a substantially horizontal posture and bypasses the upper part of the conveyance part at a low position. Further, an expansion / contraction tool 22 such as a damper, which is a holding mechanism for holding the pulling device 11 side in the deployed position when it is deployed upward, is installed between the upper support frame 14 and the lower support frame 15. In order to avoid the conveyance part while suppressing the expansion / contraction allowance, the expansion / contraction tool 22 connects the upper end to the intermediate transmission part 14b of the upper support frame 14 and the lower end from the stock control chain 15a of the lower support frame 15.

  The scraping and cutting device 12 is provided side by side with a clipper-type cutter extending over the entire trimming width and a star wheel and a scraping belt that are opposed to each other according to the trimming line, and these are supported at a low position from the rear by the lower transverse frame 23, The lower support frame 15 is integrated with the lower transverse frame 23. The lower transverse frame 23 forms a gear case extending in the vehicle width direction by providing a transmission system for driving the scraping and cutting device 12.

  Supporting portions 24 and 24 for releasably fixing the upper transverse frame 21 are supported at both side ends of the scissor-cutting device 12, as shown in FIG. The supporting legs 24a, 24a to be raised are raised. Further, a cutting upper and lower cylinder 25 is provided between the lower support frame 15 and the body frame 2 so that the cutting height can be adjusted.

  In the cutting device 4 having the above-described configuration, the pulling device 11 raises the vegetation cereal for each strip within the cutting width, and the scissor cutting device 12 cuts the vegetation culm while scrambling the stock side of the cereal. Since it is handed over to the conveyance part on the machine body frame side while cutting, and the pulling device 11 and the scraping and cutting device 12 are pivotally supported so as to swing up and down with respect to the cutting rotation support shaft 13, the pulling device 11 and the scraping and cutting device 12 are supported. Can be cut up and down together.

  In this case, the upper support frame 14 avoids the transport portion and supports the pulling device 11 from above, and the lower support frame 15 avoids the transport portion and supports the scissor cutting device 12 at a low position. The cereals are transferred to the threshing unit 5 by the transport unit without any trouble. Further, when the pulling device 11 and the upper support frame 14 are deployed and swung upward, the entire front surface of the reaping device 4 can be opened, and a large opening range B can be secured.

  Thus, since the large opening B is ensured on the front side of the reaping device 4 by unfolding the pulling device 11 integrally with the upper support frame 14, the pulling device 11 is used for clogging and maintenance of the cereal. Also, the scraping and cutting device 12 that is likely to be clogged with the cereals and the transport unit on the machine frame side can be easily maintained from the front of the machine body, and the combine can be operated efficiently.

  As for the transmission system, since it is separated vertically, each of the pulling device 11 and the scraping and cutting device 12 can be configured with the shortest path and symmetrical with each other. Compared with the structure transmitted to the frame 21, not only the right and left balance is improved and the vibration is reduced, but also the weight can be reduced and the number of parts can be reduced, thereby improving the assemblability.

  In addition, since the retractor 22 can support the pulling device 11 at the center position in the width direction, even if the pulling device 11 has a wide configuration corresponding to multiple cutting widths, it is balanced to the left and right. Thus, it can be lifted and held. In this case, the pulling device 11 is upwardly biased and supported by the expansion and contraction tool 22, and both ends of the upper transverse frame 21 are restrained by the receiving portions 24 and 24, whereby the pulling device 11 is opened by the opening operation of the receiving portions 24 and 24. It can be easily lifted and deployed, and can be easily fixed to the receiving portion 24 by an operation of pulling down the pulling device 11.

(Deployment hold)
As shown in FIG. 3, a side view of another configuration example of the expansion / contraction tool 22 can be configured simply and lightly by a two-fold link 22a for holding over the fulcrum, and a hydraulic cylinder or electric screw. By using an actuator such as a shaft and controlling the opening and closing of the receiving portions 24, 24, a series of controls for unfolding and fixing the pulling device 11 can be performed by a switch operation. In this case, the telescopic tool 22 is constituted by a hydraulic cylinder, and a hose is shared halfway along the hydraulic path of the cutting upper and lower cylinders 25 so that the power source is switched. In addition, the hose can be shortened, the oil tank can be reduced in size, and maintenance can be improved.

(clutch)
As for the transmission system of the upper support frame 14, a clutch mechanism 31 is provided in a range from the cutting rotation support shaft 13 to the upper transverse frame 21 as shown in FIG. For example, the bevel gear 32 of the transmission portion 14 a branched and transmitted from the cutting rotation support shaft 13 is incorporated so as to be slidable in the axial direction, and the transmission can be cut off by the lever 33.

  By blocking the transmission with the pulling device 11 by operating the lever 33, when the pulling device 11 is unfolded, the reverse rotation drive by the relative rotation with respect to the cutting rotation support shaft 13 that rotates integrally with the engine side is performed. Since this can be avoided, it is possible to protect the pulling device 11 by preventing the backward movement of the pulling device 11 whose driving direction is limited. As for the configuration of the clutch mechanism 31, one that does not cause a transmission difference, such as a claw clutch, can be applied.

(Grain take-up control)
Next, the culm uptake control for preventing the culm clogging of the reaping device 4 in advance will be described.
In addition to providing a cutting speed changer that enables switching between the normal and high speed two-stage switching operation of the cereal take-up operation speed at the time of cutting, an overflow sensor is provided for detecting the overflow of the merging part that converges a plurality of chopped cereals. It controls to perform high-speed cutting when a large amount of cereals exceeding the standard is taken in by an overflow sensor.

  Specifically, the cutting transmission unit 41 is provided with a switching arm 43 with a return spring on the switching shaft 42 of the cutting transmission unit 41 having a two-speed switching configuration of standard speed and high speed, as shown in an enlarged front view of FIG. The switching arm 43 is configured to be capable of two-stage switching control by connecting an electric rod 44 that moves forward and backward by a rack and pinion mechanism 44a that converts the motor input.

  As shown in FIG. 6, the overflow sensor 51 guides an enlarged plan view of the main part of the reaping apparatus while pressing the stock of the introduced cereal C along the left stock transport chain 52 for converging the left two strips. A detection switch is provided at the support rod position of the spring guide 53 through the fixed collar 55 of the small-diameter star wheel 54 so as to detect the deformation of the spring guide 53 first. With this overflow sensor 51, when the spring guide 53 deformed by receiving a large amount of stock is brought into contact with the sensor 51, the overflow sensor 51 can be operated at high speed, and the clogging of the cereal can be suppressed by reducing the cross section of the cereal.

  Further, as shown in FIG. 7 which is a plan view of the main part of another configuration example, the overflow sensor 56 is configured such that the spring guides 53 and 58 along the left and right stock transfer chains 52 and 57 are integrated with a piano wire or the like. It is formed by pivotally supporting it so as to be swingable and attaching a switch for detecting a change in the included angle between them.

  By the overflow sensor 56 having the above-described configuration, the total amount of the culm C introduced along the left stock transport chain 52 and the cereal D introduced along the right stock transport chain 57 exceeds the reference value. In such a case, by controlling so as to switch to a high speed operation, clogging of the mash at the junction can be effectively prevented based on the total amount of mash introduced.

(Interlocking with grass)
Next, a description will be given of the interlock control for the weed pods.
As shown in Fig. 8 for the front view (a) and side view (b) of the combine, in order to expand the cutting width to the right side of the fuselage, the right edge weeding basket 61 is configured to be switchable to the single-row expansion position. In conjunction with the switching operation of the weed sorghum 61, the cereal take-in operation is switched and controlled at high speed. Specifically, in order to switch the weed rod 61 to the wide position, it is connected to the switching lever 62 for front and rear operation provided in the control unit 7 by the wire 63 and to the cutting transmission unit 41 to be interlocked.

  With the above configuration, when switching the weed culm 61 to the wide position by operating the switching lever 62, the culm uptake operation is performed at a high speed by interlocking with the switching of the cutting speed changer 41. A large amount of cereals are harvested to cut the maximum width to the right side of the machine at the middle when starting the cutting operation toward the center of the field, or when cutting around the outer periphery of the field. Thus, the cereals are easily clogged, so that a troublesome clogging can be prevented by a single lever operation and a cutting efficiency can be improved without requiring a cumbersome operation.

Perspective view showing the main configuration of the mowing device and the transmission system Side view (a) of the main part of the reaping device and a side view when unfolding (b) Side view of another configuration example for stretchers Transmission system development of upper support frame (14) Enlarged front view of the cutting gear Main part enlarged plan view of the mowing device Main part plan view of another configuration example of the overflow sensor Front view (a) and side view (b) of combine

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Pulling-up apparatus 11a 1 row | line | column unit 12 Stake-and-cut apparatus 13 Cutting cutting pivot 14 Upper support frame 14a, 14b, 14c Transmission part 15 Lower support frame 21 Upper cross frame 22 Telescopic tool (holding mechanism)
23 Lower transverse frame 24 Receiving part 24a Support leg 25 Mowing upper and lower cylinder 31 Clutch mechanism B Opening range

Claims (4)

A pulling device (11) for raising a vegetative cereal mash, and a scraping and cutting device (12) for cutting the culm raised by the pulling device (11) while being scraped. (11) and the scissor-cutting device (12) are pivotally supported by a cutting rotation support shaft (13) on the machine frame so as to be swingable up and down, and the combine is delivered to the conveyance unit on the machine frame side while cutting the vegetation cereal straw. In the cutting device of
An upper support frame (14) for supporting the pulling device (11) from above while avoiding the conveying section and a lower support frame (15) for supporting the scraping / cutting device (12) from below are provided on the cutting pivot shaft. (13) A combine harvester characterized by being provided so as to be able to swing up and down independently of each other.   The combine according to claim 1, further comprising a holding mechanism (22) capable of holding the side of the upper support frame (14) including the pulling device (11) in a deployed swinging position above the cutting work position. Reaping device.   The combine mowing apparatus according to claim 2, wherein the holding mechanism (22) supports the center position of the entire trimming width on the upper support frame (14) side.   The upper support frame (14) includes a transmission mechanism (14a, 14b, 14c) that is synchronously transmitted to the pulling device (11) by a drive shaft that is coaxial with the cutting rotation support shaft (13), and this transmission mechanism (14a, 14. The combine harvesting device according to claim 1, wherein a clutch (31) for interrupting transmission is provided in 14 b and 14 c).

Images