JP2006166763A - Working implement transmission case for combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working implement transmission case enabling a combine harvester to be constructed compactly. <P>SOLUTION: The rear end of the working implement transmission case 16 housing a working implement transmission functioning to output driving force for a pretreatment section 3 for reaping grain culms in the farm and conveying them backward is located behind of the front end of a thresher 4 for grain culms reaped by the pretreatment section 3, and the working implement transmission case 16 is set up behind the pretreatment section 3 so that part of the transmission case 16 overlap on the thresher 4 when viewed sideways. A recessed part 16H is also provided to put the front end of the thresher 4 thereinto on the rear end of the transmission case 16 so that at least part of the transmission case 16 overlap on the thresher 4 when viewed from the front. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a work machine transmission case in a combine equipped with a work machine transmission for driving a pretreatment unit.

Conventionally, in front of the traveling machine body, a pre-processing unit that harvests and transports cereals in the field is provided, and a threshing machine that performs threshing work of cereals harvested by the pre-processing unit is provided behind the pre-processing unit, A work machine transmission case that includes a work machine transmission that outputs driving force for the pre-processing unit is mounted on the machine frame side of the traveling machine body, and a combine in which the work machine transmission case is arranged at the rear position of the pre-processing unit is known. (For example, refer to Patent Document 1).
JP 2004-49183 A

  Since the work machine transmission case is entirely disposed in front of the front of the threshing machine, a relatively large space is required to place the work machine transmission case in front of the threshing machine, and the overall length of the combine may be shortened. This makes it difficult to make the combine compact. Since the above combine is large and there is room in the space in front of the threshing machine, there is no problem of the arrangement space of the work machine mission case.

The work machine mission case in the combine according to the present invention for solving the above-described problem is provided with a pre-processing unit 3 that cuts grain culm in the field and conveys it to the front of the traveling machine body 5, and is cut by the pre-processing unit 3. A threshing machine 4 for threshing the cereal cereals provided is provided behind the preprocessing unit 3, and a work machine transmission case 16 that includes a work machine transmission that outputs a driving force for the preprocessing unit 3 is provided on the traveling machine body 5. In the combine that is installed on the machine body frame 1 side and the work machine mission case 16 is arranged at the rear position of the pretreatment unit 3, the rear end part of the work machine mission case 16 is located behind the front end of the threshing machine 4, The first feature is that the work machine mission case 16 is arranged so that a part thereof overlaps the threshing machine 4 in a side view.

  2ndly, the hollow part 16H for the front-end side of the threshing machine 4 to enter is provided in the rear-end part of the working machine mission case 16, and the working machine mission case 16 seems to overlap with the threshing machine 4 at the front view. It is characterized by having been arranged in.

  Thirdly, a blower fan 23 for generating a sorting wind for sorting is provided on the front side in the threshing machine 4, and a driving force is input from a drive shaft 24 of the blower fan 23.

    According to the structure of the present invention configured as described above, the rear end portion of the work machine transmission case is located behind the front end of the threshing machine, and the work machine mission is such that a part thereof overlaps the threshing machine in a side view Since a case is arrange | positioned, the space behind the pre-processing part for arrange | positioning a work machine mission case can be made small. Thereby, the total length of the combine can be shortened, and it is possible to provide a combine that is compact in the length direction.

  On the other hand, in addition to the above, at the rear end of the work machine transmission case, a recess is provided for the front end side of the threshing machine to enter, and the work machine transmission case is arranged so that at least a part overlaps the threshing machine in front view. By this, the side space of the threshing machine for arranging the work machine mission case can be reduced. As a result, the overall width of the combine can be shortened, and it is possible to provide a combine that is compact in the width direction, which is particularly effective for reducing the size of the combine with a small number of cutting lines.

  In addition, a blower fan that generates a sorting wind for sorting is provided on the front side in the threshing machine, and the driving force is input to the work machine transmission case from the drive shaft of the blower fan. Therefore, there is no need to directly input the driving force, and the arrangement of the work machine mission case is not restricted by the position of the engine, and the degree of freedom of the arrangement of the work machine mission case is improved. Further, there is an advantage that a space is available on the side of the engine and the work machine mission case can be easily arranged.

  1 to 4 are a right side schematic diagram, a left side schematic diagram, a main part plan schematic diagram, and a front schematic diagram of a combine adopting the present invention. The combine body frame 1 is supported by left and right crawler type traveling devices 2. A traveling machine body 5 is configured on the machine body frame 1. In front of the traveling machine body 5 is provided a pre-processing unit 3 that cuts grain straws in the field and conveys them backward.

  On the left side of the body frame 1 is mounted a threshing machine 4 for threshing the harvested cereal. Between the threshing machine 4 and the pretreatment unit 3, there is provided a handling depth transport body 6 that conveys the harvested cereal meal from the preprocessing unit 3 to the threshing machine 4 side while adjusting the depth. On the outer side of the threshing machine 4, a feed chain 7 is provided which inherits the cereal meal from the handling depth carrier 6 and supplies it to the threshing machine 4.

  In front of the threshing machine 4 on the machine body frame 1, a support mechanism, a drive mechanism, and the like of the pretreatment unit 4 are mounted. A driver's seat 8 is provided in front of the right side of the body frame 1. An engine E is housed below the driver's seat 8. The traveling device 2, the preprocessing unit 3, the handling depth transport body 6, the feed chain 7, the threshing machine 4 and the like are driven by the driving force from the engine E.

  As in the conventional case, this combine is driven by the driving force from the engine E, and each part is driven. While traveling in the field by the traveling device 2, the pre-processing unit 3 cuts the culm in the field and the pre-processing unit 3 cuts it. The treated cereals are handled by the handling depth transport body 6, adjusted in depth, passed from the handling depth transport body 6 to the feed chain 7, and threshed by the threshing machine 4.

  A vertical transmission pipe 9 in the vertical direction protrudes rearward from the preprocessing unit 3. A hollow pipe-shaped lateral transmission pipe 11 is integrally fixed to an end of the longitudinal transmission pipe 9 on the side of the body frame 1. Support brackets 12 </ b> L and 12 </ b> R that support the lateral transmission pipe 11 at a position above the body frame 1 are attached to the body frame 1 on the left and right.

  The lateral transmission pipe 11 is disposed at a position above the body frame 1 by support brackets 12L and 12R, and is supported so as to be able to rotate about an axis. As described above, the preprocessing unit 3 is supported on the side of the body frame 1 by the vertical transmission pipe 9 and can swing up and down around the axis of the horizontal transmission pipe 11.

  The support bracket 12L on the threshing machine 4 side (left side) is located in the vicinity of the vertical transmission pipe 9 and is connected and fixed to the front wall of the threshing machine 4 via the connecting member 10. Thereby, the support of the pre-processing part 3 is performed stably. Further, the handling depth transport body 6 is supported by the end of the lateral transmission pipe 11 on the support bracket 12 </ b> L side so as to be rotatable up and down, and is stably supported by the connecting member 10.

  As shown in FIGS. 5 (a) and 5 (b), the surface 12Ra on the threshing machine 4 side of the support bracket 12R on the driver's seat 8 side (right side) has a work for driving the pretreatment unit 3 and the feed chain 7. A surface (right side surface) 16b on the driver's seat 8 side of a transmission case (work machine transmission case) 16 of the machine transmission is fixedly attached.

  A surface (left side surface) 16a opposite to the support bracket 12R of the work machine transmission case 16 is attached to a support body 17 that is positioned between the support brackets 12L and 12R and attached to the machine body frame 1.

  The work machine transmission case 16 is attached to the machine body frame 1 by the support bracket 12R shared with the support member of the lateral transmission pipe 11 and the support body 17 serving as a support member dedicated to the work machine transmission case 16 as described above. . As a result, the number of parts related to the attachment of the work machine mission case 16 is reduced, and the work machine mission case 16 can be attached at a low cost.

  In addition, the surface 16a on the opposite side of the support bracket 12R of the work machine transmission case 16 is connected and fixed to the front wall of the threshing machine 4 via the connecting member 15, and the mounting state of the work machine transmission case 16 is stable. .

  The work machine transmission case 16 is arranged on the threshing machine 4 side (left side) from the engine E (driver's seat 8) on the machine body frame 1. The rear end portion of the work machine mission case 16 is a recessed portion 16H in which the threshing machine 4 side is recessed in a cutout shape in plan view. The work machine mission case 16 is arranged so that the front end portion of the threshing machine 4 enters the recess 16H and overlaps the threshing machine 4 in a side view and a plan view.

  The above-described lateral transmission pipe 11 is located on the front side of the work machine mission case 16. However, the height position of the lateral transmission pipe 11 is about the middle position of the work machine transmission case 16 attached to the machine body frame 1. For this reason, a concave portion 18 through which the lateral transmission pipe 11 can pass is formed in the intermediate portion on the front side of the work machine transmission case 16.

  The horizontal transmission pipe 11 is disposed so as to pass through the recess 18 on the front side of the work machine mission case 16. It is inevitable that the lateral transmission pipe 11 is positioned on the front side on the body frame 1, and the lateral transmission pipe 11 is also disposed on the front side on the body frame 1 in this structure.

  However, due to the support structure of the horizontal transmission pipe 11 of the present embodiment, the support position of the pretreatment unit 3 (front and rear positions of the horizontal transmission pipe 11) is closer to the rear side of the body frame 1. For this reason, the amount of protrusion of the lateral transmission pipe 11 forward from the work machine transmission case 16 is extremely small.

  On the other hand, as described above, the work machine mission case 16 is arranged such that the rear end portion is located behind the front end of the threshing machine 4 and a part thereof overlaps the threshing machine 4 in a side view. Thereby, the space on the front side on the machine body frame 1 in which the work machine mission case 16 is arranged can be small.

  As described above, the amount of forward projection of the horizontal transmission pipe 11 from the work machine transmission case 16 is small, and the space on the front side on the machine frame 1 where the work machine transmission case 16 is arranged is suppressed to be small. The overall length of the combine is short.

  Furthermore, the work machine mission case 16 is arranged such that the front end side of the threshing machine 4 enters a hollow part 16H formed at the rear end part, and a part thereof overlaps with the threshing machine 4 in a front view. Thereby, the space between the engine E for arranging the work machine mission case 16 and the threshing machine 4 can be small. For this reason, the overall width of this combine is short.

  As described above, the combine is a compact combine in the length direction and the width direction. In particular, by applying this structure to a small combine with a small number of mowing lines, for example, a combine for cutting two lines, it is possible to secure a space for arranging the work machine mission case 16 and to reduce the demand for miniaturization. Can be configured more compactly.

  A recess 20 that is recessed in a notch shape is provided above the rear part of the work machine transmission case 16. The work implement mission case 16 can be easily mounted and disposed by avoiding the structure in the upper rear portion of the work implement mission case 16 by the recess 20.

  Next, the drive structure of the pre-processing unit 3 and the feed chain 7 will be described. As shown in FIG. 6, the driving force of the engine E is first belt-transmitted to the intermediate shaft 21 that transmits the driving force from the engine E to the threshing machine 4. A driving force is belt-transmitted from the intermediate shaft 21 to a second helical shaft 22 that transports the second object.

  A driving force is belt-transmitted from the second helical shaft 22 to a driving shaft 24 of a red fan 23 that generates sorting air for sorting. The red fan 23 is supported by the drive shaft 24 and is rotationally driven by the drive force input from the second helical shaft 22. The input of the driving force from the second helical shaft 22 is performed on the outer side of the threshing machine 4.

  On the inner side (engine E side) of the threshing machine 4, an output pulley 26 attached to the drive shaft 24 of the tang fan 23 is provided. An input pulley 27 that is pivotally supported by an input shaft 25 for driving force is provided on the surface 16 b of the work machine transmission case 16 on the driver's seat 8 side. A transmission belt 28 is wound around the input pulley 27 and the output pulley 26.

  An idle pulley 29 for a tension clutch is slidably slidably contacted with the belt 28, and a belt tension clutch is configured to apply a driving force by applying tension to the belt 28. A driving force is transmitted to the work machine transmission through the belt tension clutch. The feed chain 7 and the preprocessing unit 3 are driven by the output from the work machine mission case 16.

  The drive shaft 24 of the tang fan 23 is arranged behind the output shaft 31 of the engine E. For this reason, the inter-axis distance between the drive shaft 24 of the red fan 23 and the input shaft 25 of the work machine transmission is set to such an extent that the belt tension clutch can be formed even if the work machine transmission case 16 is disposed relatively rearward. Can be maintained.

  As a result, the belt tension clutch can be easily provided, the arrangement position of the work machine mission case 16 can be set to the rear side, the overall length of the combine can be further shortened, and this is advantageous for making the combine compact. It becomes.

  Since the belt tension clutch cannot be provided if the distance between the output shaft of the driving force to the work implement transmission and the input shaft of the work implement transmission is short, the drive from the output shaft 29 of the engine E to the work implement transmission is impossible. When transmitting the force, it is necessary to move the position of the work machine mission case 16 further forward, leading to an increase in the total length of the combine.

  On the other hand, since it is not necessary to input a driving force directly from the engine E to the work machine transmission as described above, the arrangement of the work machine mission case 16 is not restricted by the position of the engine E. For this reason, the freedom degree of arrangement | positioning of the working machine mission case 16 improves, and the space between the engine E and the working machine mission case 16 can be made small. This can further reduce the overall width of the combine, which is advantageous for making the combine compact.

It is a right side schematic view of a combine. It is a left side schematic diagram of a combine. It is a principal part plane schematic of a combine. It is a front schematic diagram of a combine. (A) is a principal part front view of a work machine mission case part, (b) is a principal part left (threshing machine side) side view of a work machine mission case part. It is a principal part transmission diagram which shows transmission of the driving force to a working machine transmission.

Explanation of symbols

3 Pretreatment section 4 Threshing machine 5 Traveling machine body 16 Work machine mission case 16 H hollow section 23 Kara fan (blower fan)
24 Drive shaft

Claims (3)

  A threshing machine (3) is provided in front of the traveling machine body (5) to cut and harvest the cereals in the field and to carry the threshing of the cereals harvested by the preprocessing part (3). 4) is provided behind the pre-processing unit (3), and the work machine transmission case (16) that houses the work machine transmission that outputs the driving force for the pre-processing unit (3) is mounted on the body frame of the traveling machine body (5). (1) In the combine which is provided attached to the side and the work machine mission case (16) is arranged at the rear position of the pretreatment unit (3), the rear end of the work machine mission case (16) is connected to the threshing machine (4). A work machine mission case in a combine in which a work machine mission case (16) is disposed so as to be rearward of the front end of the machine and partly overlapped with the threshing machine (4) in a side view.   At the rear end of the work machine transmission case (16), a recess (16H) is provided for the front end of the threshing machine (4) to enter, and at least a part of the work machine transmission case (16) is seen from the front. The work machine mission case in the combine according to claim 1 arranged so as to overlap with (4).   A blower fan (23) for generating a sorting wind for sorting is provided on the front side in the threshing machine (4), and the driving force is input from the drive shaft (24) of the blower fan (23). The work machine mission case in the combine of item 1 or 2.

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