JP2009254319A - Pretreatment portion structure of combined harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pretreatment portion structure of a combined harvester, which can eliminate insufficiency in the support of a left main ear tip conveyer to stably convey the ear tips. <P>SOLUTION: The combined harvester 1 equipped with a multi-row reaping pretreatment portion 2 is characterized by disposing a plurality of pick-up devices A1 to A8 for picking up stalks, a pick-up transmission case 12 disposed over the upper portions of the pick-up devices A1 to A8 and transmitting a power to the pick-up devices A1 to A8, a right main ear tip conveyer E1 for conveying reaped stalks for several right side rows to a merging portion at a left rear position, and a left main ear tip conveyer E2 for conveying reaped stalks for several left side rows to the merging portion at the right rear position, in the pretreating portion 2, and supporting the downstream side of the left main ear tip conveyer E2 on the pick-up transmission case 12 through a support member 24 in a suspended state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure of a pre-processing unit for a combine including a pre-processing unit for multi-row cutting.

In recent years, a combine that performs multi-row cutting of 6 or more has been proposed. For example, Patent Literature 1 discloses a combine that includes a pre-processing unit for 8-row cutting. In the case of newly developing such a multi-thread cutting pre-processing unit, it is preferable to add one or more strips to the left side of the existing pre-processing unit based on the development cost and manufacturing cost. For example, a pre-processing unit for 6-cutting as shown in Patent Document 2 is used as a base, and two strips are added on the left side to form a pre-processing unit for 8-cutting. Specifically, the right main tip transporter that transports the right four cuts of cutting stems toward the left rear merge part among the right and left main tip transporters composed of a pair of left and right is the right main head of six cuts. The left main tip transport body, which uses the tip transport body as it is and transports the left-side four-row harvested stems toward the right rear joining portion, is configured by extending the right main tip transport body of six-row cutting.
JP-A-5-268822 JP 2007-174955 A

  However, when the left main tip transport body is simply extended, the support of the left main tip transport body becomes insufficient and stable transport may be difficult. In other words, the left main tip transport body is usually supported in a cantilevered manner by the left transmission case of the pre-processing unit on the upstream side of the left main tip transport body. There is a problem that the supporting strength is insufficient on the side.

The present invention was created for the purpose of solving these problems in view of the above circumstances, and in a combine equipped with a multi-row cutting pre-processing unit, A plurality of pulling devices that pull up, a pulling transmission case that is provided over the top of each pulling device, and that transmits power to each pulling device, and a right rear portion of the cutting stems for the right plurality of merging sections A right main tip transport body that transports toward the right side and a left main tip transport body that transports a plurality of left-handed cutting stems toward the right rear merge section, and the downstream side of the left main tip transport body It is characterized by being raised through a support member and supported in a suspended form by a transmission case. In this way, when the left main tip transport body is extended, the lack of support of the left main tip transport body can be eliminated, and stable transport can be performed. In addition, since the downstream side of the left main tip carrier is raised through the support member and supported by the transmission case in a suspended manner, interference between the support member and the conveyance stem can be prevented as much as possible.
Further, the support member is configured in an inverted L shape in a side view. If it does in this way, a support member can be evacuated from a pedicle conveyance path | route, and interference with a conveyance pedicle can be prevented further.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 is an eight-crop combine, and the combine 1 includes a pre-processing unit 2 that cuts the stems and a threshing unit 3 that threshs and selects the grains from the cut stems. 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, when configuring the pretreatment part 2 of 8-row cutting on the basis of the pretreatment part of 6-cutting, the right-hand side of the main tip transport bodies E1, E2 constituted by a pair of left and right is provided. 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 including the multi-row mowing pre-processing unit 2, the pre-processing unit 2 has a plurality of pulling devices A1 to A8 that cause stems and The raising transmission case 12 provided over the raising devices A1 to A8 and transmitting the power to the raising devices A1 to A8, and the right-side multiple chopped stems toward the left rear junction. A right main tip transport body E1 for transporting, and a left main tip transport body E2 for transporting a plurality of left-handed cutting stalks toward the right rear joining portion, and a downstream side of the left main tip transport body E2 Since the support member 24 is lifted and supported by the transmission case 12 in a suspended manner, when the left main tip transport body E2 is extended, the lack of support of the left main tip transport body E2 is eliminated, and stable transport is achieved. It can be carried out. 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. Can do. In addition, since the support member 24 is configured in an inverted L shape in a side view, the support member 24 can be retracted from the pedicle conveyance path, and interference with the conveyance pedicle can be further prevented.

  Note that the present invention is not limited to the above-described embodiment, and can be modified arbitrarily without departing from the scope of the claims. For example, in the above-described embodiment, the pre-processing unit is cut into eight lines, but the number of cut lines in the pre-processing unit is not limited to eight. For example, the six-cut, seven-cut or 9 The present invention can also be applied to a pre-processing unit that is more than the cutting line.

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

DESCRIPTION OF SYMBOLS 1 Combine 2 Pre-processing part 12 Raising transmission case 13 Left transmission case 24 Support member A Raising device E1 Right main tip transport body E2 Left main tip transport body

Claims (2)

In a combine equipped with a multi-thread mowing pre-processing unit,
The pretreatment section is provided with a plurality of raising devices for raising the stems, and a raising transmission case that is provided over the raising devices and transmits power to each of the raising devices, and a plurality of right side strips. While having a right main ear tip transport body that conveys the cutting stem pod toward the left rear merge portion, and a left main tip tip transport body that conveys a plurality of left-handed cutting stem stem toward the right rear merge portion, A structure for a pre-processing section of a combine, characterized in that the downstream side of the left main tip carrier is raised through a support member and supported in a suspended manner by a transmission case.   The combine pre-processing part structure according to claim 1, wherein the supporting member is formed in an inverted L shape in a side view.

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