JP2004129520A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester designed to prevent a mounting position of a lifting and lowering mechanism for lifting and lowering a vertical transporting apparatus from shifting by vibration of a machine body. <P>SOLUTION: The combine harvester is composed so as to regulate the threshing depth by lifting and lowering the vertical transporting apparatus provided in a reaping part. In the combine harvester, a horizontal frame extended in the left and right width directions is installed in the reaping part and a lifting and lowering frame extended in the front and rear directions is interlockingly connected to the horizontal frame. A connecting frame is installed between the horizontal frame and the lifting and lowering frame to form a truss structural part. A lifting and lowering mechanism for lifting and lowering the vertical transporting apparatus and regulating the threshing depth is arranged in the truss structural part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combine.
[0002]
[Prior art]
In the conventional combine, a mowing part is arranged at the front end of the body so as to be able to move up and down, and a vertical transfer device provided at the mowing part can be moved up and down by a drive motor so that the handling depth can be adjusted. I was
[0003]
That is, a horizontal frame extended in the left and right width direction is provided in the mowing part, an elevating frame extended in the front-rear direction is provided on the same horizontal frame so as to be rotatable vertically, and a drive motor is provided on the elevating frame. Attachment, the reduction gear mechanism is interlockingly connected to the drive motor, and the vertical conveyance device is interlockingly connected to the same speed reduction mechanism via a connection rod (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-10-295148 (FIGS. 16 and 17)
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional combine, since the drive motor is attached to the lifting frame, when a load is applied to the vertical transport device during transport of the grain rod, the load acts on a connection portion between the drive motor and the lifting frame. I was
[0006]
Therefore, when the overload is applied, the mounting position of the drive motor shifts, and accordingly, the position of the vertical transfer device shifts, and there is a possibility that the handling depth cannot be adjusted accurately.
[0007]
In addition, as a bracket for attaching the drive motor to the elevating frame, a structure and a material having strength enough to withstand deformation during overload must be used, which may increase costs.
[0008]
[Means for Solving the Problems]
Therefore, in the present invention, in a combine configured so that the handling depth can be adjusted by lifting and lowering the vertical transport device provided in the cutting unit, the cutting unit is provided with a horizontal frame extended in the left-right width direction, An elevating frame extended in the front-rear direction is provided on the frame so as to be rotatable in the vertical direction, a connecting frame is erected between the horizontal frame and the elevating frame to form a truss structure, and the truss structure is formed vertically. A lifting mechanism for raising and lowering the transfer device to adjust the handling depth is provided.
[0009]
Further, the lifting mechanism is disposed on a bracket provided at a connection between the lifting frame and the connecting frame.
[0010]
Further, the lifting mechanism directly connects the vertical transport device to the drive motor via a connecting rod.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
In the combine according to the present invention, a pair of right and left crawler-type traveling units are provided at a lower portion of a body frame extending in the front-rear direction, and a reaping unit is provided at a front end of the body frame so as to be able to move up and down. A threshing unit is located immediately after the mowing unit, and a swing sorting unit is located immediately below the threshing unit.On the other hand, a driving operation unit is disposed at the right front end of the body frame, and the same driving operation is performed. A prime mover unit is disposed immediately below the unit, and a grain storage unit is disposed immediately after the operation unit.
[0012]
The mowing unit is provided with a vertical transport device for transporting the harvested grain rods to the threshing unit, and adjusting the handling depth in the threshing unit by raising and lowering the vertical transport device using an elevating mechanism I can do it.
[0013]
In addition, the mowing unit forms a truss structure by laying a connecting frame between the horizontal frame and the elevating frame, and drives the auxiliary transport device between the elevating frame and the connecting frame forming the truss structure. The auxiliary transport drive case is mounted on the auxiliary transport drive shaft for driving the auxiliary transport device, and the auxiliary transport drive case and the connection frame are fastened vertically. An upper transport drive shaft for driving the transport device is detachably connected to the upper transport drive shaft.
[0014]
As described above, the connecting frame is erected between the horizontal frame and the lifting frame to form the truss structure, and the auxiliary transport device is driven between the lifting frame and the connecting frame forming the truss structure. Since the auxiliary transport drive case is installed, the auxiliary transport drive case can be firmly held by the truss structure, and the mounting portion of the auxiliary transport drive case may become loose due to vibration during traveling or work. Can be prevented beforehand.
[0015]
In particular, since the auxiliary transport drive case is fastened to the connection frame in the up-down direction, loosening of the fastening portion due to vibration is less likely to occur, and the fastening workability can be improved.
[0016]
In addition, since the upper transport drive shaft for driving the upper transport device is detachably connected to the auxiliary transport drive shaft for driving the auxiliary transport device, only the upper transport device can be easily removed. In addition, workability of maintenance work can be improved.
[0017]
In addition, in the present invention, the mowing unit is provided with a horizontal frame extending in the left-right width direction, and the lifting frame extended in the front-rear direction is provided on the horizontal frame so as to be rotatable in the vertical direction. A truss structure is formed by arranging a connection frame between the elevating frame and the elevating frame, and an elevating mechanism for raising and lowering the vertical transport device to adjust a handling depth is provided in the truss structure.
[0018]
That is, in the lifting mechanism, a bracket is provided at a connection between the lifting frame and the connection frame, a drive motor is attached to the bracket, and the vertical transport device is directly connected to the drive motor via the connection rod.
[0019]
As described above, since the truss structure is formed by the horizontal frame, the elevating frame, and the connecting frame, and the elevating mechanism is disposed in the truss structure, the elevating mechanism can be firmly supported by the truss structure. .
[0020]
For this reason, even when a load is applied to the vertical transport device during transport of the grain rod and the load acts on the connection between the lifting mechanism and the truss structure, the mounting position of the lifting mechanism does not shift, and the handling depth is accurate. You can make adjustments.
[0021]
Further, as a bracket for attaching the elevating mechanism to the elevating frame, it is not necessary to use a structure or a material having a strength enough to withstand deformation under overload, thereby suppressing an increase in cost.
[0022]
In addition, since a bracket for mounting the lifting mechanism is provided at the connection between the lifting frame and the connection frame, the load applied to the lifting mechanism can be shared and received by the lifting frame and the connection frame, and the drive motor can be mounted. The displacement can be prevented, and the handling depth can be adjusted accurately.
[0023]
Moreover, the lifting frame and the connection frame can be firmly connected by the bracket, and the strength of the truss structure can be increased.
[0024]
In addition, since the vertical transport device is directly connected to the drive motor via the connecting rod, a power transmission loss in a reduction gear or the like is eliminated, and the transport device can be moved up and down smoothly.
[0025]
【Example】
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
[0026]
As shown in FIG. 1, a combine 1 according to the present invention includes a pair of left and right crawler-type traveling units 3 and 3 disposed below a body frame 2 extending in the front-rear direction. The mowing part 4 is arranged to be able to move up and down freely, the threshing part 5 is arranged immediately behind the mowing part 4, and the swing sorting part 6 is arranged at a position directly below the threshing part 5. .
[0027]
The combine 1 has a driving operation unit 7 disposed at the right front end of the body frame 2, a motor unit 8 disposed immediately below the driving operation unit 7, and a position immediately behind the driving operation unit 7. Is provided with a grain storage unit 9.
[0028]
As shown in FIGS. 1 and 2, the mowing unit 4 is provided with a horizontal frame 15 extended in the left-right width direction at the upper front end of the body frame 2 so as to be vertically rotatable. The base end of the elevating frame 16 extended in the front-rear direction is attached to the portion, the cutting support frame 17 is attached to the distal end of the elevating frame 16, and the cutting blade device 18 is attached to the lower part of the cutting support frame 17 in the middle. At the same time, a plurality of herbaceous body supports 19 are attached to the tip of the mowing support frame 17 with a space between them, and a herbaceous body 20 is attached to the tip of each herbaceous body support 19. A pair of star wheels 60 are provided.
[0029]
Also, the mowing unit 4 has a grain rod raising device 21 disposed in an upper front part of the cutting blade device 18, and a stock transfer device 22 and a tip transfer device 23 disposed vertically above the cutting blade device 18. A vertical transport device 24, an upper transport device 25, and an auxiliary transport device 26 are disposed behind the stock transport device 22 and the tip transport device 23.
[0030]
Here, the grain rod raising device 21 transports the grain rod from the front end of the cutting unit 4 toward the cutting blade device 18 while raising the grain rod. The stock carrier device 22 is configured to convey the grain stem from the cutting blade device 18 rearward while pinching the stock. The tip conveying device 23 is configured to convey the cutting stick device 18 rearward from the cutting blade device 18 while pinching the spike of the grain rod. The vertical conveying device 24 conveys the grain to the threshing unit 5 while pinching the stocks of the grain rods. The vertical conveying device 24 is connected to an elevating mechanism 27 in an interlocking manner. By moving the terminal end of the vertical transport device 24 up and down, the delivery position to the threshing unit 5 is changed, so that the handling depth in the threshing unit 5 can be adjusted. The upper transport device 25 transports the tip of the grain rod toward the threshing unit 5. The auxiliary transport device 26 transports the grain rod toward the threshing unit 5. A transport mechanism 28 is configured by the grain rod raising device 21, the stock transport device 22, the tip transport device 23, the vertical transport device 24, the upper transport device 25, and the auxiliary transport device 26.
[0031]
Next, a structure that is a main part of the present invention, that is, a structure of the elevating mechanism 27 for elevating and lowering the vertical transport device 24 to adjust the handling depth will be described.
[0032]
As shown in FIGS. 3 to 7, the elevating mechanism 27 has a cylindrical connecting frame 29 erected between an intermediate portion of the horizontal frame 15 and an intermediate portion of the elevating frame 16, and has a truss having a substantially triangular shape in plan view. A bracket 31 is attached to a connecting portion between the elevating frame 16 and the connecting frame 29 that form the structural portion 30 and the truss structure portion 30, and a drive motor 32 is attached to an upper portion of the bracket 31 to drive the drive motor 32. The base end of the connecting arm 34 is attached to the shaft 33, the base end of the connecting rod 35 is rotatably and interlocked to the distal end of the connecting arm 34, and the vertical transfer device 24 is connected to the distal end of the connecting rod 35. The ends are interlocked. Note that the starting end of the vertical transport device 24 is pivotally connected to a middle part of the lifting frame 16.
[0033]
When the drive motor 32 is driven, the lifting mechanism 27 causes the connecting rod 35 to move up and down the terminal end of the vertical transport device 24 as the connecting arm 34 rotates.
[0034]
As described above, in the present embodiment, the truss structure 30 is formed by the horizontal frame 15, the elevating frame 16, and the connecting frame 29, and the elevating mechanism 27 is disposed in the truss structure 30. Since the lifting mechanism 27 can be firmly supported by 30, a load is applied to the vertical transport device 24 when the grain rod is transported, and even if the load acts on the connection between the lifting mechanism 27 and the truss structure 30, The mounting position of the lifting mechanism 27 does not shift, and the handling depth can be adjusted accurately.
[0035]
In addition, as the bracket 31 for attaching the drive motor 32 to the lifting frame 16, it is not necessary to use a structure or a material having a strength enough to withstand deformation during overload, thereby suppressing an increase in cost.
[0036]
Further, since the bracket 31 for mounting the elevating mechanism 27 is provided at the connecting portion between the elevating frame 16 and the connecting frame 29, the load applied to the elevating mechanism 27 can be shared and received by the elevating frame 16 and the connecting frame 29. It is possible to prevent the mounting position of the elevating mechanism 27 from shifting, and to adjust the handling depth accurately.
[0037]
Moreover, the lifting frame 16 and the connection frame 29 can be firmly connected by the bracket 31, and the strength of the truss structure 30 can be increased.
[0038]
Further, since the vertical transport device 24 is directly connected to the drive motor 32 via the connecting rod 35, a power transmission loss in a reduction gear or the like is eliminated, and the vertical transport device 24 can be moved up and down smoothly.
[0039]
Next, a mounting structure of the auxiliary transport drive case 36 for driving the auxiliary transport device 26 will be described.
[0040]
The auxiliary transport drive case 36 is attached to a truss structure 30 formed by the horizontal frame 15, the elevating frame 16, and the connecting frame 29.
[0041]
That is, the auxiliary transport drive case 36 has two bases, which are connected to the middle part of the elevating frame 16 in an interlocked manner, and are fastened in the vertical direction to the bracket 37 attached to the middle part of the connection frame 29. It is mounted with mounting bolts 38,38.
[0042]
The auxiliary transport drive case 36 rotatably accommodates a connecting shaft 40 operatively connected to the motor unit 8 in the body portion 39, while extending vertically in a shaft support 42 provided on the distal end head 41. The auxiliary conveyance drive shaft 43 is rotatably supported, and a bevel gear 44 attached to the distal end of the connection shaft 40 and a bevel gear 45 attached to the base end of the auxiliary conveyance drive shaft 43 mesh with each other to connect the connection shaft 40 to the auxiliary shaft. The transport drive shaft 43 is interlocked, and a drive sprocket 46 is mounted in the middle of the auxiliary transport drive shaft 43. A transport chain 47 of the auxiliary transport device 26 is wound around the drive sprocket 46.
[0043]
Here, the base end of the connection shaft 40 is interlockingly connected to a middle part of the transmission shaft 61 rotatably disposed inside the elevating frame 16, and the base end of the transmission shaft 61 is connected to the horizontal frame. The transmission shaft 62 is operatively connected to a middle portion of a transmission shaft 62 rotatably disposed inside the motor 15, and the base end of the transmission shaft 62 is operatively connected to the prime mover unit 8 via a power transmission mechanism 63. ing. Further, the cutting blade device 18 is interlockedly connected to a distal end portion of the transmission shaft 61 via a power transmission mechanism 65. In the figure, reference numeral 64 denotes a feed chain.
[0044]
That is, the connecting shaft 40 is configured to branch off a midway of the power transmission path from the prime mover unit 8 to the cutting blade device 18 to drive the auxiliary transport device 26.
[0045]
As described above, in the present embodiment, the connecting frame 29 is erected between the horizontal frame 15 and the elevating frame 16 to form the truss structure portion 30, and the elevating frame 16 and the connecting frame forming the truss structure portion 30 are formed. Since the auxiliary transport drive case 36 for driving the auxiliary transport device 26 is provided between the truss structure portion 30 and the auxiliary transport drive case 36 for driving the auxiliary transport device 26, It is possible to prevent the attachment portion of the auxiliary transport drive case 36 from being loosened due to the vibration of.
[0046]
Further, since the auxiliary transport drive case 36 is fastened to the connecting frame 29 in the vertical direction, loosening of the fastening portion due to vibration is less likely to occur, and the fastening workability can be improved.
[0047]
Further, as shown in FIG. 8, the auxiliary transport drive case 36 is configured such that the base end of the upper transport drive shaft 48 for driving the upper transport device 25 is detachably attached to the distal end of the auxiliary transport drive shaft 43 by spline coupling. Linked and linked.
[0048]
As shown in FIGS. 8 and 9, the upper transfer device 25 covers the transfer chain 49 and the base of the transfer tine 50 that is mounted on the transfer chain 49 so that the transfer chain 49 can be turned upside down by upper and lower cover bodies 51 and 52. A cylindrical boss 53 is formed at the lower end of the lower cover 52, and the base end of the upper transport drive shaft 48 is rotatably supported inside the boss 53, and the distal end of the upper transport drive shaft 48. A sprocket 54 is mounted on the sprocket 54, and the end of the transport chain 49 is wound around the sprocket 54. In the drawing, reference numeral 55 denotes a bearing that rotatably supports a spline connection portion between the auxiliary transport drive shaft 43 and the upper transport drive shaft 48.
[0049]
As described above, in this embodiment, the auxiliary transport drive shaft 43 for driving the auxiliary transport device 26 is interlockingly connected to the connection shaft 40 branched from the middle of the power transmission path from the motor unit 8 to the cutting blade device 18. At the same time, an upper transport drive shaft 48 for driving the upper transport device 25 is connected to the auxiliary transport drive shaft 43 in an interlocking manner, and a power transmission path from the motor unit 8 to the cutting blade device 18 is branched in the middle. The upper transport device 25 and the auxiliary transport device 26 are configured to be driven simultaneously.
[0050]
Moreover, in the present embodiment, the upper transport drive shaft 48 for driving the upper transport device 25 is detachably connected to the auxiliary transport drive shaft 43 for driving the auxiliary transport device 26 in an attachable and detachable manner. Only the device 25 can be easily removed from the auxiliary transport drive case 36, and the workability of maintenance work can be improved.
[0051]
In addition, the upper transfer device 25 detachably attaches the terminal cover 56 to the terminal end of the upper cover 51, and forms an opening 57 at the terminal end of the lower cover 52 to form the transfer chain 49 and the transfer tines 50. Is exposed.
[0052]
Thus, the upper and lower portions of the transfer chain 49 can be opened at the end of the upper transfer device 25, and the transfer tine 50 can be attached and detached at the end of the transfer chain 49.
[0053]
A fall prevention plate 58 is attached to the edge of the end cover body 56. When the end cover body 56 is attached to the upper cover body 51, the fall prevention plate 58 is placed on the upper edge of the upper cover body 51. As a result, the end cover body 56 is prevented from falling below the upper cover body 51 and coming into contact with the transport chain 49 or the transport tine 50.
[0054]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0055]
That is, in the present invention according to claim 1, the truss structure is formed by the horizontal frame, the elevating frame, and the connecting frame, and the elevating mechanism is disposed in the truss structure. Because it can be firmly supported, a load is applied to the vertical transport device when transporting the grain rod, and even if the load acts on the connection part between the lifting mechanism and the truss structure part, the mounting position of the lifting mechanism may be shifted. And the handling depth can be adjusted accurately.
[0056]
Moreover, as a bracket for attaching the lifting mechanism to the lifting frame, it is not necessary to use a structure or a material having strength enough to withstand deformation during overload, thereby suppressing an increase in cost.
[0057]
According to the second aspect of the present invention, since the bracket for mounting the elevating mechanism is provided at the connection between the elevating frame and the connecting frame, the load applied to the elevating mechanism is shared between the elevating frame and the connecting frame. The lifting mechanism can be prevented from being displaced, and the handling depth can be adjusted accurately.
[0058]
Moreover, the lifting frame and the connection frame can be firmly connected by the bracket, and the strength of the truss structure can be increased.
[0059]
According to the third aspect of the present invention, since the vertical transport device is directly connected to the drive motor via the connecting rod, there is no power transmission loss in the speed reducer or the like, and the transport device is moved up and down smoothly. be able to.
[Brief description of the drawings]
FIG. 1 is a side view of a combine according to the present invention.
FIG. 2 is a plan view showing a reaper.
FIG. 3 is a side view showing the reaper.
FIG. 4 is a side view showing a truss structure part.
FIG. 5 is a plan view of the same.
FIG. 6 is a plan view showing an elevating mechanism.
FIG. 7 is a side view of the same.
FIG. 8 is a sectional view showing an auxiliary transport driving case.
FIG. 9 is a plan view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combine 2 Body frame 3 Running part 4 Cutting part 5 Threshing part 6 Thrust sorting part 7 Operation operation part 8 Motor unit 9 Kernel storage part 15 Horizontal frame 16 Elevating frame 18 Cutting blade device 21 Grain rod raising device 22 Stock origin Transport device 23 Head transport device 24 Vertical transport device 25 Upper transport device 26 Auxiliary transport device 27 Elevating mechanism 28 Transport mechanism 29 Connecting frame 30 Truss structure 31 Bracket 32 Drive motor 35 Connecting rod 36 Auxiliary transport drive case 43 Auxiliary transport drive shaft 48 Upper transport drive shaft

Claims (3)

In a combine constructed so that the handling depth can be adjusted by raising and lowering the vertical transport device provided in the mowing unit,
A horizontal frame extending in the left and right width direction is provided on the mowing part, and an elevating frame extended in the front-rear direction is interlocked and connected to the horizontal frame, and a connecting frame is erected between the horizontal frame and the elevating frame. A combine having a truss structure portion formed thereon and a lifting mechanism for raising and lowering the vertical transport device to adjust a handling depth in the truss structure portion. The combine according to claim 1, wherein the lifting mechanism is provided on a bracket provided at a connection between the lifting frame and the connection frame. The combine according to claim 1 or 2, wherein the lifting mechanism directly connects a vertical transport device to a drive motor via a connecting rod.

Images