JP5160291B2 - Combine pre-processing unit structure - Google Patents

Description

  The present invention relates to a combine pre-processing unit structure including a pre-processing unit for cutting eight stripes.

In recent years, there has been proposed a combine equipped with a pre-processing unit for 8-row cutting (see, for example, Patent Document 1). In the case of newly developing such an 8-row pre-treatment unit, considering development costs and manufacturing costs, the 6-cut pre-treatment unit as shown in Patent Document 2 is used as a base, and the left side is divided into 2 lines. A configuration in which is added is preferable. For example, the right main stock transporter that transports the right 4 stems of the harvested stems toward the left rear merging portion among the left and right main stock transporters composed of a pair of left and right The left main stock transporter, which uses the former transport body as it is and transports the left-hand four-part harvested stems toward the right rear junction, extends the right main stock transport body that cuts six strips. To do.
JP-A-5-268822 JP 2007-174955 A

  However, like the combine shown in Patent Document 1, when the extended left main stock transporter is arranged symmetrically at substantially the same transport angle as the right main stock transport body, There is a possibility that the angle θ formed with the left main stock transporter becomes too large, and the harvested stalks are not smoothly joined at the joining part.

The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 is directed to a combine equipped with a pre-processing unit for 8- saw cutting. To the processing unit, the right main stock transporter that conveys the right four reaping stems toward the left rear merge part, and the left four reaping stems toward the right rear merging part The left main stock transporter , the right sub stock transport placed opposite the downstream of the right main stock transport, and the left sub placed opposite the downstream of the left main stock transport A stock transporter and a sub transport transmission shaft that transmits power branched from the vertical power transmission shaft to the drive shafts of the left and right sub stock transport bodies, and the upstream transport angle of the left main stock transport body is set to the right main Make the transfer angle smaller than that of the stock transporter, and make the downstream transport angle of the left main stock transporter larger than the transport angle of the right main stock transport. The combine is characterized in that the drive shaft of the right sub stock transporter is arranged behind the sub transport transmission shaft, and the drive shaft of the left sub stock transporter is placed in front of the sub transport transmission shaft. It is a pre-processing part structure. If it does in this way, the right main stock former conveyance body which conveys the cutting stalk buds for the 4th right side toward the left rear merge part, and conveys the cutting stalk moths for the 4th left side toward the right rear merge part In the pre-processing section of the 8-row cutting with the left main stock transporter, the upper stem of the left main stock transporter is to cut the cutting stem pod at a transport angle smaller than that of the right main stock transporter. While transporting, in the downstream part of the left main stock transporter, the cutting stems are transported at a transport angle larger than that of the right main stock transport body, so the right main stock transporter and the left main stock company at the junction It is possible to avoid the angle θ formed with the carrier from becoming too large, and to smoothly merge the left four reaping stems and the right four reaping stems. Furthermore, by providing a pair of left and right subsidiary stock formers, it is possible to more smoothly merge the left-hand four-line harvested stem culm and the right-side four-line harvested stem culm. In addition, since the drive shaft of each sub-stock source transport body is arranged to be shifted back and forth with respect to the sub-transport transmission shaft, even if a pair of left and right sub-stock source transport bodies is provided, a sufficient transport space is provided on the left and right of the junction. Can be secured.
The invention of claim 2 is such that the pre-processing unit is opposed to the downstream portion of the left main stock transporter and the right sub stock transport body disposed opposite the downstream portion of the right main stock transport body. It is provided with a left sub stock transporter and a pair of tight rollers that apply tension to the left and right sub stock transporters, and the pair of tight rollers are arranged back to back and back and forth. The combine pre-processing unit structure according to claim 1. In this way, it is possible to sufficiently secure the operation amount of each tight roller while arranging the pair of tight rollers compactly.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 denotes an eight-crop combine, and the combine 1 includes a pre-processing unit 2 that cuts stalks and a threshing unit 3 that threshs and selects grains from the stalks that have been cut. And a grain tank 4 for storing the selected grains, a post-processing unit 5 for post-processing the threshed waste, a control unit 6 on which the operator gets on, and a crawler-type traveling unit 7. Has been.

  As shown in FIGS. 4 to 8, the pretreatment unit 2 includes a divider 8 for weeding the stems, elevating devices (tines) A <b> 1 to A <b> 8 for causing the stems, and a scraping belt for scratching the stems B1 to B8 and star wheels C1 to C8, a cutting blade 9 for cutting the stems of the stems, a stock transporter (chain) D1 to D6 for transporting the stocks of the cutting stems, and the tips of the cutting stems Are provided with tip carrier bodies (tines) E1 to E4 and upper tip carrier bodies (tines) F1 and F2.

  In the stock transporters D1 to D6, the right main stock transporter D1 that transports the right-hand four-row harvested stalks toward the left rear merge part, and the left-hand four strips of the trimmed stems in the right rear The left main stock transporter D2 transported toward the junction, the right sub stock transport D3 disposed facing the downstream portion of the right main stock transport D1, and the left main stock transport D2. Left substock former transport body D4 arranged opposite to the downstream part, main stock former transport body D5 that transports the combined harvested stems toward the threshing section 3, and upper and lower with the start side or the end side as fulcrums A handling depth carrier D6 that adjusts the handling depth based on the swing is included.

  In addition, in the tip transport bodies E1 to E4, the right main tip transport body E1 that transports the right-hand four-line harvested stem culm toward the left rear merge part, and the left-hand four-segment cut stem pod on the right rear side. Opposite the left main tip transport body E2 transported toward the junction, the right sub-tip transport body E3 disposed facing the downstream portion of the right main tip transport body E1, and the downstream portion of the left main tip transport body E2 Left upper tip transport body E4 is included, and the upper stage tip transport body F1, F2 includes an upper right stage tip transport body F1 disposed above the upstream portion of the right main tip transport body E1. And an upper left stage tip carrier F2 disposed above the upstream portion of the left main tip carrier E2.

  As shown in FIGS. 9 and 10, the pre-processing unit 2 includes transmission cases 10 to 13, and power is supplied to each unit via transmission shafts incorporated in these transmission cases 10 to 13. It has become. The transmission cases 10 to 13 include a longitudinal transmission case 10 that extends forward and downward from the machine body side, a lateral transmission case 11 that distributes the power transmitted to the front end of the longitudinal transmission case 10 in the left-right direction, and a lateral transmission. A pulling transmission case 12 arranged in parallel above the case 11 and a left transmission case for connecting the left ends of the lateral transmission case 11 and the pulling transmission case 12 to transmit power between the cases 11 and 12. 13 is included. In addition, at the connecting portion between the left transmission case 13 and the pulling transmission case 12, a pulling transmission 14 is provided for shifting the operating speed of the pulling devices A1 to A8.

  As shown in FIGS. 4 to 6, the preprocessing unit 2 includes a frame body 15 that is connected to the longitudinal transmission case 10, the raised transmission case 12, and the left transmission case 13. The frame body 15 is provided mainly for mounting the transport guide 16 of the main stock transporter D5 and the tip sensor 17 used for handling depth control.

  In the present embodiment, when the pre-processing unit 2 for cutting 8 lines is configured, the pre-processing unit for cutting 6 lines is used as a base, and two strips are added on the left side. Specifically, among the main stock transporters D1 and D2 composed of a pair of left and right, the right main stock transporter D1 that transports the right four cut-cut stems toward the left rear junction is 6 Divert the right main stock transporter for cutting (you can use many parts such as a cast case, but the length of the transport body is slightly changed, so it is not the same), and 4 strips on the left The left main stock transporter D2 that transports the cutting stem pods toward the right rear merge part is formed by extending the right main stock transporter with six-row cutting, but the extended left main stock transporter When D2 is arranged symmetrically at substantially the same transport angle as the right main stock transporter D1, the angle θ between the right main stock transport body D1 and the left main stock transport body D2 becomes too large, There is a possibility that the merging of the cutting stalks will not be performed smoothly.

  Therefore, in the pre-processing unit 2 according to the present embodiment, the right main stock transporter D1 that conveys the right-side four-row harvested stems toward the left rear merge portion, and the left-side four-row harvested stems. In providing the left main stock transporter D2 transported toward the right rear junction, as shown in FIG. 7, the upstream transport angle θ1 of the left main stock transport D2 is set to the right main stock transport. It is smaller than the transport angle θ2 of D1, and the downstream transport angle θ3 of the left main stock transporter D2 is larger than the transport angle θ2 of the right main stock transporter D1. Specifically, when the main stock transporters D1 and D2 are configured using a transport chain or sprocket, the arrangement of sprockets and the like is optimized so that the transport angles θ1 to θ3 of the transport chain satisfy the above conditions. is there.

  If it does in this way, the right main stock former conveyance body D1 which conveys the cutting stalks for the 4th right side toward the left rear merge part, and the cutting stalk moth for the 4th left side toward the right rear merge part In configuring the 8-row cutting pre-processing unit 2 including the left main stock transporter D2 to be transported, a transport angle smaller than that of the right main stock transporter D1 is provided upstream of the left main stock transporter D2. While the cutting stem pod is conveyed at θ1, the cutting stem pod is conveyed at the downstream portion of the left main stock transporter D2 at a transport angle θ3 larger than that of the right main stock transporter D1, so that the right main stem at the junction Avoid the angle θ between the stock transporter D1 and the left main stock transporter D2 from becoming too large, and smoothly merge the left four cuts and the right four cuts Can do.

  Further, as described above, the pre-processing unit 2 of the present embodiment includes the right sub-stock source transport body D3 and the left main stock base transport body D2, which are arranged to face the downstream portion of the right main stock transport body D1. And a left sub stock transporter D4 disposed to face the downstream portion. Thereby, it is possible to more smoothly merge the left and right four-line harvested stem pods and the right-side four-segment harvested stem pods. However, when a pair of left and right subsidiary stock transporters D3 and D4 are provided, the merge section There is a problem that it is difficult to secure a sufficient transport space on the left and right sides of the frame.

  Therefore, in the present embodiment, as shown in FIGS. 7 to 10, the power branched from the vertical transmission shaft 18 is supplied to the drive shafts 20 of the left and right subsidiary stock transporters D3 and D4 via the sub-transport transmission shaft 19, 21, the drive shaft 20 of the right sub stock transporter D3 is arranged behind the sub transport power transmission shaft 19 and the drive shaft 21 of the left sub stock transport D4 is transported from the sub transport power transmission shaft 19. Is also placed forward. In this way, each sub-stock source transport body D3, D4 can be shifted and arranged in the front and rear, so even if a pair of left and right sub-stock base transport bodies D3, D4 are provided, sufficient transport space is ensured on the left and right of the junction can do.

  Moreover, the pre-processing part 2 of this embodiment is opposed to the downstream part of the left main stock transporter D2 and the right sub stock transport D3 disposed to face the downstream part of the right main stock transporter D1. In order to provide the left subsidiary stock transporter D4 arranged in this manner, a pair of tight rollers 22 and 23 are provided for applying tension to the transport chains of the respective subsidiary stock transporters D3 and D4. The pair of tight rollers 22 and 23 is disposed in front of the drive shafts 20 and 21 so as to be movable in the left-right direction, and is urged outward by a spring (not shown), thereby transporting each of the subsidiary stock transporters D3 and D4. Although tension is applied to the chain, in this embodiment, the pair of tight rollers 22 and 23 are arranged back to back and shifted back and forth. If it does in this way, a sufficient amount of operation of each tight roller 22 and 23 can be secured, arranging a pair of tight rollers 22 and 23 compactly.

  Moreover, in this embodiment, in configuring the 8-row-cut pre-processing unit 2 on the basis of the 6-row-cut pre-processing unit, the right-hand 4-row portion of the main tip transport bodies E1 and E2 configured by a pair of left and right. The right main tip transport body E1 that transports the cutting stem pods toward the left rear merge part is diverted from the right main tip transport body of 6-row cutting (although many parts such as a casting case can be used, It is not the same because the length of the transport body is slightly changed.) The left main tip transport body E2 that transports the cutting stems for the left four strands toward the right rear junction is Although the right main tip transport body is extended and configured, if the left main tip transport body E2 is simply extended, the support of the left main tip transport body E2 becomes insufficient, and stable transport may be difficult. There is sex. That is, the left main tip transport body E2 is normally supported in a cantilevered manner by the left transmission case 13 of the pre-processing unit 2 on the upstream side, and therefore, if the left main tip transport body E2 is simply extended, There is a problem that the supporting strength is insufficient on the downstream side of the transport body E2.

  Therefore, the pre-processing unit 2 of the present embodiment has the right main tip transport body E1 that conveys the right-side four-row harvested stems toward the left rear merge portion, and the left-side four-row harvested stems to the right rear. As shown in FIGS. 11 to 13, the downstream side of the left main tip transport body E <b> 2 is raised via the support member 24 to provide a transmission case. 12 is supported in a suspended manner. If it does in this way, in extending the left main tip conveyance body E2, the lack of support strength of the left main tip conveyance body E2 can be eliminated, and stable conveyance can be performed. In addition, since the downstream side of the left main tip transport body E2 is raised via the support member 24 and supported in a suspended manner by the transmission case 12, interference between the support member 24 and the transport stem is prevented as much as possible. However, in this embodiment, since the support member 24 is configured in an inverted L shape in a side view, the support member 24 is retracted from the pedicle conveyance path, and further interference with the conveyance pedicle is further performed. Can be prevented.

  In this embodiment, the left main stock transporter D2, the left main stock tip transport body E2, and the upper left top stock transport body F2 are integrally connected to form the left main transport unit. The carrier D2 and the upper left stage tip carrier F2 are also raised and supported by the transmission case 12 via the left main tip carrier E2 and the support member 24. That is, as shown in FIGS. 11 to 13, the left main tip transport body E <b> 2 is integrally connected to the left main stock transport body D <b> 2 via the support members 25 and 26, and via the support member 27. It is integrally connected to the upper left stage tip carrier F2. The upstream portions of the left main stock transporter D2, the left main tip transport body E2, and the upper left stage head transport body F2 are integrally connected to the left transmission case 13 via support members 28 to 30, respectively. The downstream part of the tip carrier E <b> 2 is configured to be lifted via the support member 24 and integrally connected to the transmission case 12.

  Further, in the present embodiment, when the pre-processing unit 2 for 8-cutting is configured on the basis of the pre-processing unit for 6-cutting, the frame body 15 described above also moves to the left in accordance with the increase in the number of the pre-processing units 2. However, if the frame body 15 is simply extended, the support strength of the members attached to the frame body 15 is lowered, and there is a possibility that a stable cutting operation becomes difficult. Specifically, the support of the transport guide 16 of the main stock former transport body D5 and the tip sensor 17 used for handling depth control becomes unstable, and there is a concern about adverse effects on pedicle transportation and handling depth control.

  Therefore, as shown in FIGS. 4 to 6, the preprocessing unit 2 of the present embodiment includes a frame body 15 that is connected to the longitudinal transmission case 10, the raised transmission case 12, and the left transmission case 13. 15, a right frame portion 15 a that is raised from the vertical transmission case 10 and connects the transmission case 12, a left frame portion 15 b that extends rearward from the left transmission case 13, and a right frame portion 15 a and a left frame portion 15 b are connected. A horizontal frame portion 15c and a middle frame portion 15d extending forward from the periphery of the connecting portion between the left frame portion 15b and the horizontal frame portion 15c and connected to the transmission case 12 are configured.

  In this way, the frame body 15 extends from the periphery of the connecting portion between the left frame portion 15b and the horizontal frame portion 15c in addition to the conventional right frame portion 15a, left frame portion 15b, and horizontal frame portion 15c. And since it comprises the middle frame part 15d connected with the transmission case 12, even if it extends in the left direction according to the multiple stripes of the pre-processing part 2, sufficient support strength can be ensured. Thereby, the various members attached to the frame body 15 can be stably supported, and a good cutting operation can be performed. In the present embodiment, as shown in FIG. 6, the height of the right frame portion 15a and the middle frame portion 15d is substantially the same in a side view, so that the height of the middle frame portion 15d is equivalent to that of the right frame portion 15a. Thus, interference with the conveying stem can be prevented.

  In the present embodiment, as shown in FIG. 14, each frame portion 15 a to 15 d of the frame body 15 is formed of a separate member and integrally connected with a bolt and a nut. Needless to say, 15d can be integrally formed in any combination.

  According to the present embodiment configured as described, in the combine 1 provided with the pre-treatment unit 2 for cutting 8 stalks, the right-hand four stalks are directed to the left rear merge unit. The left main stock transporter D1 and the left main stock transporter D1 that transports the left four chopped stalks toward the right rear junction. The upstream conveyance angle θ1 of the left main stock transporter D1 is made smaller than the transport angle θ2 of the right main stock transporter D1, and the downstream transport angle θ3 of the left main stock transporter D1 is transported by the right main stock transport D1. Since it is larger than the angle θ2, the right main stock former transport body D1 that conveys the right four reaping stems toward the left rear joining portion and the left four reaping stems are fed to the right rear joining portion. In forming the 8-row cutting pretreatment unit 2 including the left main stock transporter D2 transported toward the upstream of the left main stock transporter D2 Then, while transporting the cutting pedicles with a smaller transport angle θ1 than the right main stock transporter D1, in the downstream portion of the left main stock transporter D2, a transport angle θ3 larger than the right main stock transporter D1. In this case, the angle θ formed between the right main stock transporter D1 and the left main stock transporter D2 at the junction is avoided to be too large, and the left four cuts are obtained. And the right 4 cuts of the cutting stems can be smoothly joined.

  Moreover, it arrange | positions in the pre-processing part 2 facing the downstream part of the right substock transport body D3 arrange | positioned facing the downstream part of the right main stock transport body D1, and the left main stock transport body D2. Left substock former transport body D4, so that the left-hand four-row harvested stem culm and the right-side four-row harvested stem culm can be merged more smoothly. In addition, it has a sub-transport transmission shaft 19 that transmits the power branched from the vertical transmission shaft 18 to the drive shafts 20 and 21 of the left and right sub-stock transport bodies D3 and D4, and the drive shaft 20 of the right sub-stock transport body D3. Since the drive shaft 21 of the left substock source transport body D4 is disposed in front of the sub transport transmission shaft 19 and disposed behind the sub transport power transmission shaft 19, a pair of left and right sub stock source transport bodies D3 and D4 Even if it provides, sufficient conveyance space can be ensured on the right and left of the junction.

  In addition, the pretreatment unit 2 includes a pair of tight rollers 22 and 23 that apply tension to the left and right sub-stock transporters D3 and D4, and the pair of tight rollers 22 and 23 are back-to-back and shifted back and forth. Since it arrange | positioned, the operation amount of each tight roller 22 and 23 can fully be ensured, arrange | positioning a pair of tight rollers 22 and 23 compactly.

It is a left view of a combine. It is a front view of a combine. It is a top view of a combine. It is a top view of a pre-processing part. It is a front view of a pre-processing part. It is a left view of a pre-processing part. It is a top view which shows the arrangement configuration of the conveyance body in a pre-processing part. It is a transmission expansion view which shows the transmission structure of a pre-processing part. It is a front view which shows a vertical transmission case, a horizontal transmission case, and a left transmission case. It is a front view which shows a left transmission case and a raising transmission case. It is a right front perspective view which shows the left main conveyance part of a pre-processing part. It is a left rear perspective view which shows the left main conveyance part of a pre-processing part. It is a left view which shows the left main conveyance part of a pre-processing part. It is a disassembled perspective view of a frame body.

Explanation of symbols

1 Combine 2 Pre-processing unit 18 Vertical transmission shaft 19 Sub-transport transmission shaft 20 Drive shaft 21 Drive shaft 22 Tight roller 23 Tight roller D1 Right main stock transport D2 Left main stock transport D3 Right sub stock transport D4 Left Sub stock transporter θ1 Transport angle θ2 Transport angle θ3 Transport angle

Claims (2)

In a combine equipped with a pre-processing section for cutting 8
A right main stock transporter that conveys the right four reaping stems toward the left rear merging portion and the left four reaping stems toward the right rear merging portion in the pretreatment section. The left main stock transporter that is transported, the right sub stock transport that is placed facing the downstream portion of the right main stock transport, and the downstream portion of the left main stock transport With the left sub stock transporter and a sub transport transmission shaft that transmits the power branched from the vertical drive shaft to the drive shaft of the left and right sub stock transport body ,
The upstream conveyance angle of the left main stock transporter is made smaller than the transport angle of the right main stock transport, and the downstream transport angle of the left main stock transport is transported by the right main stock transport Bigger than the corner ,
The drive shaft of the right sub stock transporter is disposed behind the sub transport transmission shaft, and the drive shaft of the left sub stock transport body is disposed in front of the sub transport transmission shaft . Pre-processing part structure. In the pre-processing unit, a right sub-stock transporter disposed facing the downstream portion of the right main stock transport body, and a left sub-stock stock disposed facing the downstream portion of the left main stock transport body a conveying member provided with a pair of tight rollers tension the left and right auxiliary lines based carrier, in a back-to-back pair of tight rollers, and claim 1 Symbol mounting characterized by being staggered in the longitudinal Combine processing pre-processing part structure.

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