JP2018153153A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To address such a problem of a combine-harvester that may cause non-uniformity of feet of grain culms to be conveyed or scatter of the culms according to tension conditions of a chain.SOLUTION: A threshing depth conveyance chain mechanism 11, receiving reaped grain culms conveyed by plant foot conveyance chains 10, 23, and 24, clampingly conveying them to a machine body rearward, and capable of adjusting the threshing depth in a thresher 3, includes a conveyance chain 29 consisting of an upper conveyance chain 29u and a lower conveyance chain 29d. Further, in the upper conveyance chain 29u or the lower conveyance chain 29d, a driving sprocket 38a is arranged at a grain culm conveyance terminal edge side and a driven sprocket 38b at a grain culm conveyance starting edge side to convey grain culms by a tension-side chain, where a clamping rod 44 is provided to face the tension-side chain.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a combine.

  The harvesting and conveying device for the combine is provided with a handling depth adjusting device in order to supply the threshing device with an appropriate handling depth. The handling depth adjustment chain of this handling depth adjusting device is a thresher with the handling depth adjusted to an appropriate position while adjusting the movement of the cereal cake inherited from the end of the stock transport chain in the slimming direction of the cereal. The device is supplied to the apparatus, and is configured to be wound around a drive sprocket that is adjustably supported on the airframe side support portion and an idler roller on the terminal side (Patent Document 1).

JP 2012-165752A

  By the way, in the structure of patent document 1, since it is the structure which act | operates the idler roller side by using the drive sprocket side of the cereal grain conveyance upper side as a rotation fulcrum and controls the slimming direction of the cereal grain, Although the transport side is strained, it becomes the loose side of the chain on the sandwiching and transporting side of the grain straw, and since the grip with the chain and the sandwiching bowl is only one place while being in the long slimming direction, reliable grain straw transport There is a risk that it will be damaged and so-called grain spillage may occur, and so-called spillage may occur.

  In order to solve the above problems, the present invention has taken the following technical means.

  That is, the invention described in claim 1 is a handling depth that inherits the harvested cereals that are conveyed by the stock transport chains 10, 23, and 24, and is nipped and conveyed to the rear of the machine body and the handling depth in the threshing device 3 can be adjusted. The transport chain mechanism 11 includes a transport chain 29 including an upper transport chain 29u and a lower transport chain 29d.

  According to the second aspect of the present invention, in the first aspect, the upper transport chain 29u or the lower transport chain 29d has a drive sprocket 38a disposed on the cereal transport end side and a driven sprocket 38b disposed on the cereal transport start end side. It is set as the structure which conveys a grain candy with the chain | strand of the side, and the clamping ridge 44 is provided facing this tension | tensile_strength side chain.

  According to a third aspect of the present invention, in the second aspect of the invention, the first drive shaft 30u is disposed on the cereal conveyance end side, and the second drive shaft 30d is disposed on the cereal conveyance start end side, respectively. A drive sprocket 38a for the upper transfer chain 29u is provided on the shaft 30u, and a drive sprocket 37a for the lower transfer chain 29d is provided on the second drive shaft 30d.

  The invention according to claim 4 is the invention according to claim 3, wherein both support arms are provided between the upper support arm 40 that supports the upper transport chain 29u and the lower support arm 37c that supports the lower transport chain 29u. Fastening means 46 for fastening and integrating 40 and 37c is provided, and the upper transport chain 29u is configured to be rotatable around the first drive shaft 30u with respect to the lower transport chain 29d in the released state.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the upper support arm 40 that supports the upper transport chain 29u is rotatably provided on a support cylinder 39 that supports the first drive shaft 30u.

  According to the first aspect of the present invention, since the handling depth adjustment chain 29 has the two-stage configuration of the upper and lower conveyance chains 29u and 29d, the upper and lower two-stage conveyance when taking over from the stock source conveyance chain 10 The chains 29u and 29d will take over, so that so-called spillage can be prevented, the transport posture is stable, and transport is reliable.

  According to the invention described in claim 2 or 3, in addition to the effect of the invention described in claim 1, the side of the chain that reciprocates and conveys the culm becomes the tension side, and the nail basket 44 and the upper conveyance chain 29u The gripping force by squeezing becomes stronger, and the spilled cereals and stock stock are stabilized.

  According to the invention described in claim 4 or 5, in addition to the effect of the invention described in claim 1, the upper transfer chain 29u can be rotated while the support arm 40 is released from the fastening state, that is, in a rotatable state. In addition, the inspection and maintenance of the upper transfer chain 29u and the lower transfer chain 29d and their surroundings are facilitated.

Combine side view Top view of the combine Top view of reaping and conveying equipment Side view showing the right side of the cutting and conveying device in cross section Side view of handling depth adjustment chain (A) and plan view (B) Enlarged plan view of handling depth adjustment chain (A) (B) Action explanatory diagram of the fastening state and fastening release state of the handle depth adjustment chain (A) (B) Plan view of the cutting and conveying device of the modified example Side view (A), plan view (B), and action explanatory diagram (C) of the modified working depth adjustment chain Enlarged plan view (A) (B) of the modified depth adjustment chain Enlarged sectional view (A) and bottom view (B) of the safety clutch

  Embodiments of the present invention will be specifically described below with reference to the drawings.

  First, as shown in FIGS. 1 and 2, the combine is equipped with a threshing device 3 on a vehicle body 2 equipped with crawlers 1 and 1, and a cutting and conveying device 4 is provided on the front side thereof. It is configured as possible.

  Then, the cutting and conveying device 4 includes, from the front, a weed cocoon 5, a grain culling raising device 6, a reaping device 7, a driven star wheel 8, a right stock former transport chain 10, a middle stock former transport chain 23, and a left stock former. The conveying chain 24, the handling depth adjusting chain mechanism 11, the tip conveying device 12 and the like are integrally configured. The threshing device 3 threshs the cereal grains inherited from the reaping and conveying apparatus 4 with the feed chain 13 with the cereal supply port on the front side, and cereals the grain up to the adjacent grain tank 14. It is set as the structure which can be conveyed and stored. The Glen tank 14 is provided with a discharge auger 15 connected thereto, and can be discharged outside the machine when the work proceeds and the grains in the Glen tank 14 are full.

  Next, a description will be given of the configuration of the cutting and conveying apparatus 4, in particular, the cutting and conveying apparatus 4 that scoops, harvests, and conveys the multiple ridge rows that are the main part of the present application.

  As shown in FIG. 4, the cutting blade device 7 is provided on the front side of the transmission and support frame 16 located at the rear portion, and is disposed at a low position. It is configured so that it can be harvested. Then, the stir-up star wheels 8, 8 form a passage for scrambling the two rows of grain ridges above the cutting blade device 7 as a pair, and the front is directed obliquely forward from that position. It is set as the structure which provided the raking | stucking lug belts 17 and 17 arrange | positioned in open planar view C shape.

  Thus, the cutting and conveying apparatus 4 is configured to arrange three passages for scraping the two rows of corn straw rows side by side, and to simultaneously cut the six rows of corn straw rows.

  The right stock former transport chain 10 is configured to sandwich and convey the grain stock of the passage of the right side of the three rows of grain ridge rows, and between the intermediate portion and the end portion. It is set as the structure which provided the termination | terminus part of the middle stock former conveyance chain 23 and the left stock former conveyance chain 24 which join the grain straw conveyed from the front side raking path in two places. And the right stock former conveyance chain 10 is set as the structure which provides the pinching | guiding guide rod 10a corresponding to the grain candy conveyance side, and clamps and conveys the conveyance corn straw inherited in the front part. In addition, both the above-described transport chains 23 and 24 facing the intermediate part and the terminal part of the right stocker transport chain 10 are also provided with gripping guides 23a and 24a on the transport side to transport the grain straws. It is configured.

  Then, the above-mentioned pair of stir-up star wheels 8 and 8 drive the star foil on the side around which the medium stock former transport chain 23 and the left stock former transport chain 24 are wound, and the other star foil. While being transmitted in an engaged state, the cereal can be scraped into both sides.

  Although the said tip conveying apparatus 12 is comprised with a chain with a lug and latches the upper part of a grain straw in an engagement state, it conveys, The said right stock former transportation chain 10, middle stock former transportation chain 23, and left stock former transportation chain 24, respectively, are arranged along the upper part of the right stock former transport chain 10, the middle stock former transport chain 23, and the left stock former transport chain 24. Note that the chain with the tip transport lug above the right stock transport chain 10 in the tip transport device 12 is provided to extend above the handling depth adjustment chain mechanism 11 described later in detail.

  The handling depth adjustment chain mechanism 11 includes a conveyance chain 29, a drive shaft 30, a clamping rod 44, and the like, and is positioned at a conveyance terminal portion of the right stocker conveyance chain 10, and clamps the inherited cereal rice cake. The head portion is automatically adjusted by a treatment depth automatic control device (not shown) so that the head portion can be supplied to a portion suitable for the treatment barrel of the threshing device 12 while adjusting in the slimming direction. .

  The transport chain 29 constituting the handling depth adjusting chain mechanism 11 includes an upper transport chain 29u, a lower transport chain 29d, and first and second drive shafts for driving the transport chains 29u and 29d in the upper and lower portions. 30u, 30d, etc.

  A bevel gear 16a that is linked to a non-illustrated cutting part transmission shaft in the transmission / support frame 16 is supported by a transmission shaft 31, and a relay shaft 33 is connected to the transmission shaft 31 via a bevel carrier mechanism 32 starting from the transmission shaft 31. The second drive shaft 30d is interlocked and connected to the relay shaft 33 via a bevel gear mechanism 34.

  Further, the spur gears 31a and 35a disposed at the upper end of the transmission shaft 31 and the lower end of the second relay shaft 35 are engaged with each other, and they are parallel to each other but displaced by a predetermined distance ε. The rear end upper sprocket 10b of the right stock transport chain 10 is fixed to the second relay shaft 35, and the right stock transport chain 10 is driven. The transmission case 36 that accommodates the transmission shaft 31, the relay shafts 33, 35, and the like is appropriately connected and fixed to the frame of the cutting and conveying device 4 such as the transmission and support frame 16.

  A drive sprocket 37a is disposed at the lower end of the second drive shaft 30d to drive the lower transport chain 29d. The driven sprocket 37b is disposed at the lower end of the first drive shaft 30u and the lower transport chain 29d is wound and supported. The lower support arm 37c is supported by the transmission case to support both sprockets 37a and 37b. 36 is provided between a lower end portion of 36 and a lower end of a support cylinder, which will be described later, covering the first drive shaft 30u.

  A drive sprocket 38a for the upper transport chain 29u is provided at the upper end of the first drive shaft 30u. A support cylinder 39 for supporting the first drive shaft 30u is provided, and an adjustment arm 41 is connected to the other end of the support arm 40, one end of which is rotatably connected to the support cylinder 39. The driven sprocket 38b of the upper transport chain 29u is provided on the side. In addition, the conveyance side which pinches the cereal is made into the vehicle body outer side, and the roller 42u, 42d for tension | tensile_strength is provided in the upper and lower part conveyance chains 29u and 29d in the non-conveyance side inside a vehicle body. The rotation structure of the support arm 40 with respect to the support cylinder 39 will be described in detail. A boss portion 40b of a bracket member 40a connected to the support arm 40 is fitted to the support cylinder 39 so as to be freely rotatable. Reference numeral 40 is configured to freely rotate around the axis of the support cylinder 39.

  One end of a U-shaped rod 43 is connected to the support cylinder 39 that supports the first drive shaft 30 u, and the upper conveying chain 29 u of the upper and lower conveying chains 29 is disposed at the other end of the U-shaped rod 43. It is the structure which supports the attachment member 45 of the clamping rod 44 which opposes.

  Because of the above configuration, the stocker side transport chain 29 of the handling depth adjusting chain mechanism 11 has the upper transport chain 29u and the lower transport chain 29d arranged in parallel, and the posture thereof is from the stocker transport chain 10. The receiving end is set so that the starting end side is low and the terminal end side to be taken over by the feed chain 13 of the threshing device 12 is set high, and the upper and lower transfer chains 29u and 29d are integrally formed around the axis of the second drive shaft 30d. It is configured to be freely adjustable. The handling depth can be adjusted to an appropriate position and supplied to the threshing apparatus 3 while moving and adjusting in the slimming direction of the conveyed cereal by the rotation around the axis.

  Note that, as described above, the tip transfer device 12 disposed above the right stock former transfer chain 10 is extended to above the handle depth adjusting chain mechanism 11. Combined with the holding or locking conveyance of the upper and lower conveying chains 29u, 29d on the stock market side, the cereal is conveyed toward the threshing device 3 while gradually changing to a horizontal posture.

  Further, the handling depth adjustment control device outside the figure is centered on the entire handling depth adjustment mechanism 11 while rotating the control motor forward and backward by detection of a sensor that monitors the introduction status of the grain tip at the entrance of the threshing device 3. While the forward and reverse rotation around P, the cereal basket is moved and adjusted in the slimming direction, and the handling depth is adjusted to an appropriate position and supplied to the threshing device 12.

  As described above, the handling depth adjustment chain 29 has a two-stage configuration of the upper and lower transport chains 29u and 29d. Therefore, when taking over the cereals that are transported to the stock transport chain 10, The transfer chains 29u and 29d take over, so that so-called spillage can be prevented, the transfer posture is stable, and transfer is reliable.

  In the above configuration, since the upper transport chain 29u is driven by the transmission of the first drive shaft 30u, the left outer side of the cutting and transporting device 4 in the reciprocating stroke of the chain is the grain squeezing and conveying side, and the side of the cereal sandwiching and conveying is in tension. As a result, the clamping force by the clamping basket 44 and the upper transport chain 29u is strengthened, and the spilled cereals and stock stock are stabilized. In particular, even a short culm can be reliably transported with the culm sandwiched between the upper transport chains 29u arranged at the upper level.

  In this embodiment, the upper conveying chain 29u side sandwiches and conveys the culm with the tension side chain. However, the cereal is conveyed with the lower conveying chain 29d side or the upper and lower tension side chains, or It is good also as a form which carries out pinching conveyance.

  Next, as described above, regarding the rotation restriction and release of the support arm 40 or the adjustment arm 41 that supports the upper conveyance chain 29u of the handling depth adjustment chain 29, the support arm 40 and the adjustment arm 41 are integrated. Therefore, it is necessary to restrict the rotation around the support cylinder 39 because it is supported by the support cylinder 39. Therefore, the support arm 40 and the lower support arm 37c of the lower transfer chain 29d are fastened together by a detachable fastener, for example, a bolt 46. A bolt fitting upper pipe 46a is fixed to the support arm 40 side, and a bolt fitting lower pipe 46b is fixed to the lower support arm 37c side so that the bolts 46 can be fitted together in a coaxial state. The bolt 46 is fastened and fixed to be in an integrated state. When the bolt 46 is pulled out, the support arm 40 is in a rotatable state, that is, in a fastening release state. The support arm 40, the adjustment arm 41, and the upper transport chain 29u can be integrally rotated in the released state, that is, in a rotatable state, and it is easy to inspect and maintain these parts, the lower transport chain 29d, and their surroundings. Become.

  By the way, in the above-mentioned fastening release state, the holding rod 44 and the U-shaped rod 43 remain in their positions, that is, the connecting portion of the U-shaped rod 43 to the support cylinder 39 is set in a floating configuration, so that the holding rod 44 can be removed. There is no need to perform work, and cleaning work and maintenance work such as removing residues can be facilitated. Further, assuming that the portion linked to the control motor of the non-illustrated depth control device is the lower support arm 37c side, the upper transfer chain 29u and its surroundings are brought into the restriction release state regardless of the holding rod 44 and the lower support arm 37c. You can get none.

  Regarding the relationship between the support arm 40 and the adjustment arm 41 for supporting the upper transport chain 29u, a bolt 40a is fixed to the support arm 40 in the vertical direction, while the adjustment arm 41 side has a long hole 41a in the longitudinal direction. Form. The long hole 41a and the bolt 40a are set in a penetrating state and fixed by tightening a nut. Since the adjustment arm 41 can be attached by being rotated by a predetermined angle around the vertical axis with respect to the fixed side support arm 40 in this way, the takeover merge between the root conveyance chain 10 and the handling depth adjustment mechanism 11 is achieved. Although the gap may vary due to the accumulation of component tolerances, the above-described configuration makes it easy to adjust the gap at the takeover / merging portion. In addition, since the elongated hole 41a is formed, the tension adjustment work of the upper conveyance chain 29u is also easy.

  In the transmission case 36 of the handling depth adjusting chain 29, the second relay shaft 35 and the transmission shaft 31 are parallel to each other but displaced by a predetermined distance ε. For this reason, a stepped portion 32 a is generated in the outer shape of the transmission case 36. When the upper transport chain 29u and the like are released from regulation, the step 32a is moved to the upper transport chain when the upper transport chain 29u and the like are rotated about the support cylinder 39 axis (that is, the first drive shaft 30u axis). 29u can be set in the passing region on the tip side, and does not interfere with the transmission case 36. That is, the degree of freedom in designing the arrangement of the first drive shaft 30u and the starting point of the lower transport chain 29d is improved.

  The upper and lower transport chains 29u and 29d are formed on the outer side of the frame of the cutting and transporting device 4, but the lower transport chain 29d is configured so that the transport function is outside the transport function of the upper transport chain 29u. doing. Thereby, since the conveying action part functions along the lying posture of the strawberries conveyed in the lying posture, the grains can be conveyed stably.

  Further, the arrangement of the transfer start end portions of the upper and lower transfer chains 29u and 29d is configured such that the transfer start end portion of the lower transfer chain 29d projects forward from the transfer start end portion of the upper transfer chain 29u. As a result, the lower transport chain 29d can first enter the merging transport unit, and the takeover from the base transport chain 10 can be performed first, and then the upper transport chain 29u is also received. If it is accepted at one time, it is difficult to arrange the cereals and there is a risk of spilling over the cereals. However, when configured as in this embodiment, the cereal takeover is good.

  Further, when the lower transport chain 29d is arranged to be positioned below the front stock transport chain 10, it can protrude forward irrespective of the upper transport chain 29u.

  In the holding rod 44, the upper conveying chain 29u is provided with the holding rod 44 opposed thereto, but the lower conveying chain 29d is not opposed to the holding rod 44. As a result, during the so-called short culling operation, the lower conveying chain 29d cannot be clamped, so that the transporting culm is clamped by the upper conveying chain 29u, and the configuration can be simplified. Further, when the transporting cereal clogging phenomenon occurs and the work for eliminating this phenomenon is performed, removal is easy because the holding pestle is not provided.

  After transporting by the transport chain 29 of the handling depth adjusting chain mechanism 11, the cereals are handed over to the feed chain 13 of the threshing device 3, but are transferred to the front side of the feed chain 13 as shown in FIG. By providing the chain 47, the conveyance can be carried out smoothly and reliably.

  8-10, the example of a change of the stock-source side conveyance chain mechanism 50 of the handling depth adjustment chain mechanism 11 is demonstrated. In this modified example, a single transport chain 51 is used. Among the transmission configurations, the second relay shaft 35, the transmission case 36, the second relay shaft 35, the bevel gear mechanism 32, the second relay shaft 35, and the bevel gear mechanism 36 of the above-described embodiment have a common configuration, and have the same reference numerals. Indicate. Instead of the second drive shaft 30d of the above embodiment, the third relay shaft 52 is used, the long transmission shaft 54 is transmitted via the bevel gear mechanism 53, and the drive shaft 56 is transmitted via the bevel gear mechanism 55. Yes. A drive sprocket 51 a of the transport chain 51 is provided at the upper end of the drive shaft 56. A support cylinder 57 that supports the drive shaft 56 is provided, and an adjustment arm 59 is connected to the other end of the support arm 58 that is rotatably connected to the support cylinder 57. A driven sprocket 51b of the conveyance chain 51 is provided. In addition, the conveyance side which pinches the grain straw is made into the vehicle body outer side, and the tension | tensile_strength roller 60 of the conveyance chain 51 is provided in the non-conveyance side of the vehicle body inner side. Further, one end of a U-shaped rod 61 is connected to the support cylinder 57 that supports the drive shaft 56, and an attachment member 63 of a holding rod 62 that faces the conveying chain 51 is provided on the other end of the U-shaped rod 61. It is the structure which supports a bullet.

  The posture of the transport chain 51 is set so that the starting end side, which is the receiving position from the stock transport chain 10, is low, and the terminal side to be taken over by the feed chain 13 of the threshing device 12 is high, and the transport chains 29u and 29d are the third ones. The relay shaft 52 is configured to be rotatable around the axis Q. It is possible to supply the threshing apparatus 3 with the handling depth adjusted to an appropriate position while moving and adjusting in the slimming direction of the transported culm by turning around the axis Q.

  In the above-described configuration, since the conveying chain 51 is driven by the drive shaft 56 disposed on the rear side, the left outer side of the cutting and conveying device 4 in the reciprocating stroke of the chain is the culm holding and conveying side. The side becomes a tension side, the clamping force by the clamping basket 62 and the conveyance chain 51 is strengthened, and the spillage and stock arrangement of the grain basket to be conveyed are stabilized.

  Further, the support arm 58 and the shaft case 64 covering the long transmission shaft 54 are fastened together by a detachable connector such as a bolt 65. A bolt fitting upper pipe 65a is fixed to the support arm 58 side, and a bolt fitting lower pipe 65b is fixed to the lower shaft case 64 side so that the bolts 65 can be fitted together in a coaxial state. Yes. When the bolt 65 is fitted and fixed, the rotation is restricted, and when the bolt 65 is removed, the support arm 58 becomes rotatable (regulation release state).

  Further, regarding the relationship between the support arm 58 that supports the transport chain 51 and the adjustment arm 59, a bolt 58a is fixed to the support arm 58 in the vertical direction, while the adjustment arm 59 side has a long hole in the longitudinal direction. 59a is formed. The long hole 59a and the bolt 58a are set in a penetrating state and fixed by tightening a nut. In this way, the adjustment arm 59 can be attached to the fixed side support arm 58 by rotating a predetermined angle around the longitudinal axis.

  In the above modified example, a long transmission shaft 54 is arranged in place of the lower transfer chain 29d in the first embodiment, and the transfer chain 51 is placed on the grain transporting side in the same manner as the upper transfer chain 29u in the first embodiment. Will be nervous on the outside. In addition, since the support arm 58 is configured to be rotatable around the support cylinder 57 and includes the configuration of the adjustment arm 59, the same effect as the upper transport chain 29u of the first embodiment can be obtained.

  Further, the long transmission shaft 54 is configured to overlap the conveyance chain 51, the support arm 58, and the like in plan view. Therefore, it is convenient without interfering with the transportation of the cereal.

  Next, a safety clutch added to the drive configuration of the transport chain 51 of the handling depth adjusting chain mechanism 11 will be described with reference to FIG. A safety clutch 70 is incorporated in a portion of the bevel gear mechanism 55 between the long transmission shaft 54 and the drive shaft 56. Specifically, in the bevel gear mechanism 55, the driven side bevel gear 55 b supported by the drive shaft 56 is meshed with the drive side bevel gear 55 a supported by the transmission shaft 54. Then, the driven bevel gear 55b side is spline-fitted to provide an integral drive side plate 71, 71, and the lower end of the drive shaft 56 is fitted with a deformed fit 72 to fix the housing 73. Driven side plates 74, 74 are provided, and the drive side plates 71, 71 and the driven side plates 74, 74 are alternately combined so that the housing 73 can be inserted and removed in a direction parallel to the axis of the drive shaft 56. The adjusting bolts 75, 75, 75 are screwed together. The spline fitting portion is provided with a sliding allowance so that it can move a small amount in the axial direction.

  In the safety clutch 70 configured in this way, when the initial pressure is first applied by turning the adjustment bolts 75, 75, 75, the rotational torque of the transmission shaft 54 is transmitted to the drive shaft 56 via the safety clutch 70. Is done. Therefore, the conveyance chain 51 can be driven. When the load of the cereal conveyance increases, the rotation of the drive shaft 56 falls to cause a rotation difference with the transmission shaft 54, and the difference is absorbed by the slip of the safety clutch 70. The initial pressure can be arbitrarily set in consideration of the work situation such as the work time and the skill level of the worker and the situation of the cereal. In the present embodiment, the lower end side of the support cylinder 57 that supports the drive shaft 54 is released to facilitate external adjustment. The safety clutch 70 part is surrounded by the lower part of the support cylinder 57 and the disk part 73a of the housing 73, so that there is no accumulation of debris and torque adjustment, that is, clutch initial pressure adjustment is easy.

10 Right stock transport chain (stock transport chain)
23 Medium share transfer chain (stock transfer chain)
24 Left stock transport chain (stock transport chain)
29u Upper transfer chain 29d Lower transfer chain 30u First drive shaft 30d Second drive shaft 37a Drive sprocket 37c Lower support arm 38a Drive sprocket 38b Driven sprocket 39 Support cylinder 40 Upper support arm 44 Holding rod 46 Bolt (fastening means)

Claims (5)

  Depth handling chain mechanism (11) that inherits the harvested cereals conveyed by the stock transport chain (10, 23, 24), holds and transports the harvested cereals to the rear of the machine, and adjusts the handling depth in the threshing device (3) And a transport chain (29) comprising an upper transport chain (29u) and a lower transport chain (29d).   The upper transport chain (29u) or the lower transport chain (29d) has a drive sprocket (38a) disposed on the cereal transport end side and a driven sprocket (38b) disposed on the cereal transport start side, and the strainer side chains The combine according to claim 1, wherein a holding rod (44) is provided opposite to the tension side chain.   The first drive shaft (30u) is disposed on the cereal transport end side, the second drive shaft (30d) is disposed on the cereal transport start end side, and the drive sprocket of the upper transport chain (29u) is disposed on the first drive shaft (30u). The combine according to claim 2, wherein (38a) is provided, and a drive sprocket (37a) of the lower transport chain (29d) is provided on the second drive shaft (30d).   Both support arms (40, 37c) are fastened and integrated between an upper support arm (40) that supports the upper transfer chain (29u) and a lower support arm (37c) that supports the lower transfer chain (29u). The upper conveying chain (29u) is configured to be rotatable around the first drive shaft (30u) with respect to the lower conveying chain (29d) in a fastening release state by providing fastening means (46) to be turned on. Combine as described in.   The combine according to claim 4, wherein the upper support arm (40) that supports the upper transport chain (29u) is rotatably provided on a support cylinder (39) that supports the first drive shaft (30u).

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