JP2013153690A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester in which other parts are easily installed and work for opening a harvesting section can be performed efficiently.SOLUTION: A combine harvester 100 is configured so that power from an engine 9 is changed in speed by a transmission 41 and the power having been changed in speed is transmitted to a harvesting first shaft 53 of a harvesting section 3 through a torque limiter 56. The harvesting section 3 can be opened by being rotated to the left and right in the horizontal direction. A power transmitting second gear 86 and a harvesting input gear 96 are provided to the output side of the torque limiter 56 and the other side of the harvesting first shaft 53, respectively, to mesh with each other. When the harvesting section 3 is opened, the power transmitting second gear 86 of the torque limiter 56 and the harvesting input gear 96 of the harvesting first shaft 53 are separated from each other.

Description

  The present invention relates to a combine technique, and more particularly, to a combine technique that transmits power from an engine to a cutting unit via a torque limiter.

  2. Description of the Related Art Conventionally, there is a combine that transmits power from an engine to a cutting unit through a torque limiter and includes a torque limiter inside a counter case (for example, see Patent Document 1). The torque limiter is configured to be able to cut off the power transmission to the cutting unit. For example, when the cutting drive load on the rotating shaft side of the counter case increases, the torque limiter acts to transmit the power to the cutting unit. Can be shut off.

Japanese Patent No. 4109604

  However, in the conventional configuration, the number of parts is increased by providing a counter case. Further, a space for arranging the counter case is required, and the place for arranging other parts is limited. Further, since a belt is used to transmit power from the torque limiter to the cutting input shaft of the cutting unit, it is necessary to remove the belt when the cutting unit is opened.

  In view of the problems, the present invention provides a combine that facilitates the placement of other components and can efficiently perform work when opening a cutting part.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to the first aspect of the present invention, there is provided a combine that shifts the power from the engine with the transmission and transmits the power after the shift to the cutting input shaft of the cutting unit through the torque limiter. It can be rotated and released, and gears are provided on the output side of the torque limiter and the other side of the cutting input shaft to engage with each other. When the cutting unit is opened, the gear of the torque limiter and the gear of the cutting input shaft are separated. It is something to be made.

  According to a second aspect of the present invention, the torque limiter is provided on one end side of the cutting input shaft.

  In Claim 3, the power transmission member from a driving | running | working part and the power transmission member from a threshing part are arrange | positioned at the input side of the said torque limiter.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, it is not necessary to remove the belt when the cutting portion is opened, and the working efficiency is improved.

  In claim 2, since the counter case is not used, the number of parts can be reduced. Further, by providing the torque limiter in the vicinity of the cutting input shaft, a space for arranging the cutting input shaft and the torque limiter can be collected.

  In claim 3, when the clutch of the running unit is in the disengaged state and the clutch of the threshing unit is in the engaged state, the harvesting unit can be driven, so that the grain jammed in the harvesting unit when stopped Can remove cocoons.

The side view which showed the whole structure of the combine which concerns on one Embodiment of this invention. The front view which showed the structure of the combine. The block diagram which shows the power transmission mechanism of an engine. The perspective view which shows a torque limiter and a cutting 1st axis | shaft. The top view which shows a torque limiter. The plane partial sectional view showing a torque adjustment mechanism.

  Next, embodiments of the invention will be described.

First, the whole structure of the combine 100 which concerns on this invention is demonstrated using FIG.1 and FIG.2. The direction of arrow A in FIG. 1 is defined as the traveling direction.
The combine 100 includes a traveling unit 2, a cutting unit 3, a threshing unit 4, a feed chain 5, a grain tank 6, a discharge auger 7, a driving operation unit 8, and an engine 9.
The traveling unit 2 includes a pair of left and right crawlers 11. The pair of left and right crawlers 11, 11 support the traveling machine body 1. The reaping part 3 is a part for reaping the cereal and is provided in the front part of the traveling machine body 1. In the present embodiment, a four-row mowing part 3 is provided. The threshing unit 4 is a part that threshs the cereals harvested by the reaping unit 3, and is provided on the upper portion of the traveling machine body 1. The threshing unit 4 has a feed chain 5 for conveying the cereals backward. The Glen tank 6 is a tank that stores the grain after threshing, and is mounted on the side of the threshing unit 4. The discharge auger 7 is a device for discharging grains stored in the grain tank 6 to the outside, and is disposed on the upper part of the grain tank 6. The driving operation unit 8 is provided at the front portion of the traveling machine body 1 and includes an operation device including a driving seat 12, a steering handle 13, various operation levers, and the like. An engine 9 as a power source is disposed in the traveling machine body 1 below the driver seat 12.

Next, the structure of the cutting part 3 is demonstrated using FIG.1, FIG2 and FIG.3.
The cutting unit 3 includes a cutting frame 21, a plurality of weed boards 22 provided at the front end of the cutting frame 21, and a plurality of raising cases 23 provided at the front part of the cutting frame 21. The rear part of the cutting frame 21 is supported by the traveling machine body 1 so as to be rotatable up and down. The weed board 22 is for weeding the uncut cereal grains in the field into four sections, and in this embodiment, five are provided. The pulling case 23 is erected side by side in the left-right direction in a tilted posture. Each pulling case 23 is provided with a pulling tine 24 for pulling up the cereal.

  A star wheel 25 and a belt 26 with a protrusion for scraping are provided at the lower rear of the pulling case 23, and the star wheel 25 and the belt 26 with a protrusion are used to scrape the base of the uncooked wheat straw that has been raised. Include. Further, a cutting blade 27 is provided below the cutting frame 21, and the chopped uncut grain is cut by the cutting blade 27.

A lower conveyance device 30 that conveys the root of the harvested cereal rice cake from the front to the back is supported by a harvesting frame 21 described later.
The upper conveying device 32 that conveys the tip side of the harvested cereal rice bran backward, and the feed chain 5 of the threshing unit 4 at the base and tip side of the four halves of the chopped rice merging in the vicinity of the feed terminal end of the lower conveying device 30 A vertical transfer device 34 that carries out transfer by transfer to the start end is supported by a vertical transfer drive case (not shown).
Further, the cutting unit 3 has a cutting lifting cylinder (not shown). By comprising in this way, the cutting part 3 whole is comprised so that raising / lowering is possible by extending / contracting a cutting raising / lowering cylinder. Further, the handling depth can be adjusted by swinging the vertical conveying device 34 up and down.

  Further, the cutting unit 3 is arranged horizontally around a vertical support shaft 20 erected on one side of the front part of the traveling machine body 1 in order to facilitate maintenance of each device, engine, transmission case, and the like therein. It is configured to be pivotable (open / close pivotable).

Next, the power transmission mechanism of the cutting unit 3 will be described with reference to FIG.
The power from the engine 9 is transmitted to the transmission 41 of the traveling unit 2, and the power is transmitted from the traveling unit output pulley 42 to the cutting unit first input pulley 51. A belt is wound between the traveling unit output pulley 42 and the cutting unit first input pulley 51.
On the other hand, the power from the engine 9 is transmitted to various transmission mechanisms (not shown) of the threshing unit 4, and the power is transmitted from the threshing unit output pulley 43 to the cutting unit second input pulley 52. A belt is wound between the threshing section output pulley 43 and the reaping section second input pulley 52, and a tension clutch 45 is provided in the middle of the belt.

  During normal operation, the tension clutch 45 is in a disconnected state, and power is transmitted from the traveling unit output pulley 42 to the cutting unit first input pulley 51. Further, when only the pouring operation of the cereal is performed when the traveling unit 2 is in the stopped state, the threshing unit 4 is driven. 43 to the cutting part second input pulley 52.

  The reaping portion first input pulley 51 and the reaping portion second input pulley 52 are connected to a first transmission shaft 81 that constitutes the torque limiter 56, and the output side of the torque limiter 56 constitutes the reaping input shaft. 53 is fixed to one end. The first transmission shaft 81 transmits power to the cutting first shaft 53 via the torque limiter 56.

Further, as shown in FIG. 4, the cutting first shaft 53 is arranged such that the axial direction is the left-right direction with respect to the traveling direction, and the rear side of the cutting first shaft 53 on the torque limiter 56 side. As shown by the two-dot chain line in FIG. Further, as indicated by a two-dot chain line in FIG. 4, a cooling fan 17 is provided on the side of the traveling machine body 1 on the side of the engine 9. The cooling fan 17 is a fan for sending air from the outside of the machine body to the inside (engine 9 side) to cool the engine. The wind from the cooling fan 17 passes through the engine 9 and is also sent to the space where the cutting first shaft 53 is disposed. Thereby, the cooling effect by air can be acquired also with respect to the cutting 1st axis | shaft 53. FIG.
A bevel gear is fixed to the other end of the cutting first shaft 53, and power is transmitted to the upper conveyance shaft 55 via the bevel gear. The upper transport shaft 55 is a shaft for transmitting power to the upper transport device 32.
Further, a bevel gear is fixed in the middle of the cutting first shaft 53, and power is transmitted to the cutting second shaft 57 through the bevel gear.

A bevel gear is fixed in the middle of the cutting second shaft 57, and power is transmitted to the lower conveyance shaft 60 and the vertical conveyance shaft 61 via the bevel gear. The lower transport shaft 60 and the vertical transport shaft 61 are shafts for transmitting power to the lower transport device 30 and the vertical transport device 34, respectively.
Also, a bevel gear is fixed to the other end of the second cutting shaft 57, and power is transmitted to the third cutting shaft 58 via the bevel gear.

A bevel gear is fixed to the other end of the third cutting shaft 58, and power is transmitted to the cutting blade drive shaft 62 via the bevel gear. The cutting blade drive shaft 62 is a shaft for transmitting power to the cutting blade 27.
Further, a bevel gear is fixed in the middle of the third cutting shaft 58, and power is transmitted to the fourth cutting shaft 65 via the bevel gear.

A bevel gear is fixed in the middle of the fourth cutting shaft 65, and further transmits power to the transport shaft 67 via the bevel gear and the power transmission shaft 66. The conveyance shaft 67 is a shaft for transmitting power to the star wheel 25, the belt 26 with protrusions, the lower conveyance device 30, and the upper conveyance device 32.
Two gears are fixed to the other end of the fourth cutting shaft 65, and power is transmitted to the fifth cutting shaft 70 via the gear.

A bevel gear is fixed to the other end of the fifth cutting shaft 70, and power is transmitted to the sixth cutting shaft 71 via the bevel gear.
Then, the chain of the plurality of pulling case 23 shown in FIG.

Next, the torque limiter 56 will be described with reference to FIGS.
The torque limiter 56 is a mechanism for stopping the transmission of power when a load greater than a predetermined load is applied. The torque limiter 56 includes a cutting unit first input pulley 51, a cutting unit second input pulley 52, and a cutting first shaft 53. It is provided in the middle and is arranged in the vicinity of one end side of the cutting first shaft 53. More specifically, the torque limiter 56 is provided on the rear upper side of the cutting input gear 96 provided on one end side of the cutting first shaft 53.

  The torque limiter 56 includes a first transmission shaft 81 for fixing the reaping portion first input pulley 51 and the reaping portion second input pulley 52, and a torque adjusting mechanism 83 disposed on one side of the first transmission shaft 81. , A power transmission first gear 85 as a gear for transmitting power from the first transmission shaft 81 to the cutting first shaft 53 via the torque adjustment mechanism 83, a power transmission second gear 86, and a gear case for storing them 80.

  The torque adjustment mechanism 83 includes an outer case 87, an inner plate 88, an outer plate 89, a torque plate 90, and a torque spring 91. The outer case 87 is disposed with the direction parallel to the longitudinal direction of the first transmission shaft 81 (the left-right direction with respect to the aircraft traveling direction) as the longitudinal direction, and a plurality of elongated holes 87a are provided in the longitudinal direction. Inside the outer case 87, an inner plate 88, an outer plate 89, a torque plate 90, and a torque spring 91 are provided. A torque nut 92 provided at one end of the torque adjustment mechanism 83 is tightened so that the elastic force of the torque spring 91 can be adjusted. The inner plate 88 is fixed to the first transmission shaft 81, and the outer plate 89 is provided with a plurality of protrusions that fit into the long holes 87 a of the outer case 87 on the outer periphery. The torque plate 90 is sandwiched between the inner plate 88 and the outer plate 89, and supports a plurality of torque rollers (not shown) in a rotatable manner. A force for pressing the inner plate 88 and the outer plate 89 can be adjusted by a torque spring 91.

  As a result, the force that presses the inner plate 88 and the outer plate 89 by the torque spring 91 becomes a frictional force during normal times, so that when the first transmission shaft 81 rotates, the inner plate 88 and the outer plate 89 rotate integrally. Then, the projection 89a of the outer plate 89 and the elongated hole 87a of the outer case 87 mesh with each other, and the outer case rotates. As a result, power is transmitted from the first transmission shaft 81 to the outer case 87. When an excessive load is applied to the first transmission shaft 81 side, the torque is greater than the force that presses the inner plate 88 and the outer plate 89, so the inner plate 88 is attached to the outer plate 89 via the torque plate 90. , The power is not transmitted from the first transmission shaft 81 to the outer case 87.

  A seal member 93 is provided on the outer side of the outer case 87. The seal member 93 is a member for sealing the gear case 80 with the torque adjustment mechanism 83 side and the power transmission first gear 85 side separated. The space on the torque adjustment mechanism 83 side of the gear case 80 separated by the seal member 93 (the space surrounded by the two-dot chain line in FIG. 6) is filled with lubricating oil. With this configuration, the torque adjustment mechanism 83 is always immersed in the lubricating oil, and stable power transmission can be performed.

An outer case gear 94 is provided on one side of the outer periphery of the outer case 87, and the outer case gear 94 meshes with a power transmission first gear 85 fixed on the second transmission shaft 95. The second transmission shaft 95 is rotatably supported by the gear case 80, and a power transmission second gear 86 is fixed to the other end of the second transmission shaft 95. A part (front side) of the power transmission second gear 86 is exposed from the gear case 80 and engaged with a cutting input gear 96 provided at one end of the cutting first shaft 53.
In such a configuration, the power transmitted to the first transmission shaft 81 is transmitted from the torque adjustment mechanism 83 and the outer case gear 94 to the power transmission first gear 85, and from the power transmission first gear 85 to the second power transmission. Power is transmitted to the cutting input gear 96 provided at one end of the cutting first shaft 53 via the transmission shaft 95 and the power transmission second gear 86.

When the mowing unit 3 is maintained, etc., when the mowing unit 3 is horizontally rotated about the vertical support shaft 20 in the direction of the arrow X in FIG. 5, the engagement between the power transmission second gear 86 and the mowing input gear 96 is achieved. Is released and separated. Thereby, the cutting input gear 96 and the cutting first shaft 53 rotate in the horizontal direction together with the cutting unit 3, and the power transmission first gear 85, the power transmission second gear 86, the second transmission shaft 95, the torque adjustment mechanism 83, The first transmission shaft 81, the cutting part first input pulley 51, and the cutting part second input pulley 52 remain on the traveling machine body 1 side.
Since the cutting part first input pulley 51 and the cutting part second input pulley 52 remain on the traveling machine body 1 side, it is not necessary to remove the belt when the cutting part 3 is rotated horizontally.

As described above, the combine 100 transmits the power from the engine 9 by the transmission 41 and transmits the power after the shift to the first cutting shaft 53 of the cutting unit 3 through the torque limiter 56, and the cutting unit 3 The power transmission second gear 86 and the cutting input gear 96 are provided on the output side of the torque limiter 56 and the other side of the cutting first shaft 53, respectively, and are engaged with each other. At the time of releasing, the power transmission second gear 86 of the torque limiter 56 and the cutting input gear 96 of the cutting first shaft 53 are separated.
By configuring in this way, it is not necessary to remove the belt when the cutting unit 3 is opened, and the working efficiency is improved.

Further, the torque limiter 56 is provided on one end side of the cutting first shaft 53.
By configuring in this way, the number of parts can be reduced because a counter case is not used. Further, by providing the torque limiter 56 in the vicinity of the cutting first shaft 53, a space for arranging the cutting first shaft 53 and the torque limiter 56 can be collected.

Further, on the input side of the torque limiter 56, a cutting part first input pulley 51 that is a power transmission member from the traveling part 2 and a cutting part second input pulley 52 that is a power transmission member from the threshing part are arranged. Is.
By configuring in this way, when the clutch of the traveling unit 2 is in the disengaged state and the tension clutch 45 of the threshing unit 4 is in the engaged state, the reaping unit 3 can be driven, so the stop Sometimes the cereals jammed in the cutting part 3 can be removed.

  In the combine according to the position embodiment of the present invention, a power transmission first gear 85 and a power transmission second gear 86 are provided as gears for transmitting power to the cutting first shaft 53. For example, it is also possible to configure with a single gear.

2 traveling unit 3 mowing unit 4 threshing unit 41 transmission 45 tension clutch 53 mowing first shaft (mowing input shaft)
56 Torque limiter 86 Power transmission second gear 96 Cutting input gear 100 Combine

Claims (3)

A combine that shifts the power from the engine with a transmission and transmits the power after the shift to the cutting input shaft of the cutting unit through a torque limiter,
The mowing part is pivotable in the horizontal direction and can be opened.
The combine is characterized in that gears are provided and meshed respectively on the output side of the torque limiter and the other side of the cutting input shaft, and when the cutting unit is opened, the gear of the torque limiter and the gear of the cutting input shaft are separated.   The combine according to claim 1, wherein the torque limiter is provided on one end side of the cutting input shaft.   The combine according to claim 1 or 2, wherein a power transmission member from the traveling unit and a power transmission member from the threshing unit are arranged on the input side of the torque limiter.

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