JP2001061330A - Reaping portion structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To devise the simplification of the structure, the reduction of the cost, and the inhibition of carriage troubles in reaping and carrying routes, and simultaneously support the first and second carrying devices without obstructing the carriage of grain straws. SOLUTION: Grain straw dividers, grain straw-raising devices 7, a reaping device 8, the first carrier 9 for rearward carrying the reaped grain straws, and the second carrier 10 for collecting and carrying the grain straws are arranged in a reaping portion for three rows. The second longitudinal transmission shafts 17, 17c are installed from the first lateral transmission shaft to the upper portions of the grain straw-raising devices 7. The first lateral transmission shaft is interlocked with the front end portion of a main transmission shaft 15 passing through a main reaping frame 12F supported on the frame. The first carrier 9 and the second carrier 10 are interlocked with both the right and left second transmission shafts 17 through chains. Raking frames 43 to 45 for supporting the first carrier 9 are supported with casings 46 to 48 surrounding the second transmission shafts 17, 17c and with support arms 49 fixed to grain straw-dividing frames 12x.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing portion structure of a combine, and more particularly, to a device for arranging a power transmission system in a mowing portion, and to vertically combine grain culms to be raised and cut in a lateral direction. TECHNICAL FIELD The present invention relates to a technique that allows a harvested grain culm to be smoothly transported to a threshing apparatus without clogging by devising a first transporting device including a scraping rotary body and the like for sending to a transporting device.

[0002]

2. Description of the Related Art Conventionally, a weeding tool for weeding a planted grain culm, a mowing device for cutting a planted grain culm raised by an elevating device, and a raked grain culm rearwardly conveyed. A first transport device;
The harvesting unit is provided with a left and right second transporting device that gathers and transports the harvested grain culm conveyed by the first transporting device to a left and right intermediate position, and mainly as a multiple-row harvesting combine of three or more trimmings, For example, it is disclosed in JP-A-10-323111.

[0003] That is, the transmission system for each of the raising devices includes a left-right counter shaft of the body to which engine power is transmitted, a main transmission shaft extending forward and downward from the counter shaft, and a front portion of the main transmission shaft. Linked left and right first transmission shaft,
A second transmission shaft erected from one left and right end of the first transmission shaft toward the upper portion of the raising device on one side end thereof, and each raising device from the upper portion of the second transmission shaft toward the other left and right end side. Power distribution shaft extending so as to be able to be connected to the power distribution shaft, a plurality of hanging shafts that are raised from the power distribution shaft and hung over the upper portion of the device, and bevel gears and the like that are operatively connected to each other. It had been.

The transmission system for the left and right first transfer device and the second transfer device is, for example, disclosed in Japanese Unexamined Patent Application Publication No. 7-177814. This is performed via a left and right vertical axis erected from the transmission shaft toward the first and second transport devices on the left and right, and a bevel gear or a worm gear for transmitting and connecting the first transmission shaft and the left and right vertical axes. Was configured as follows.

[0005]

However, according to the above-mentioned prior art, the power distribution shaft is extended over the upper portions of the respective raising devices, so that the power is prevented from being deteriorated by the power distribution shaft. When the distribution shaft is raised and placed low enough to hide behind the back of the device, the tip side of the planted grain culm raised by the raising device comes to be hooked on the transmission case surrounding the power distribution shaft. In addition, transport troubles such as transport failure and transport clogging due to transport delay or entanglement on the tip side are likely to occur.

Conversely, if the power distribution shaft is raised and disposed at a position sufficiently higher than the upper end of the device to avoid the transport trouble, the power transmission shaft surrounding the power distribution shaft, the hanging shaft, etc. Since the case is greatly exposed and the appearance is deteriorated, it becomes necessary to provide a decorative cover for hiding them. In addition, the transmission case and the makeup cover raise the visibility of the portion immediately in front of the device from the control section, which makes it difficult to perform a aligning operation for correctly positioning the combine with the planted grain culm to be cut. When the power distribution shaft, the hanging shaft, and the transmission case surrounding the power distribution shaft, the hanging shaft, and the like are disposed at the upper part, the position of the center of gravity is increased, and the weight balance of the body is deteriorated. Was.

Further, in the above-mentioned prior art, the transmission to the first and second transfer devices on the left and right is performed by the first transfer device.
Through the transmission shaft via the vertical axis and the bevel gear or worm gear, the transmission structure becomes complicated and the manufacturing cost increases. In addition, since transmission parts for the first transport device and the second transport device, which are more likely to be caught by the complication, are arranged at a lower portion in the reaping transport path, mud, weeds, etc., which are transported together with the harvested grain culm. Of the harvesting culm due to mud or weeds accumulated in the transmission unit for the first and second transport devices, and the transport troubles such as clogging of the transport of the harvested culm and the like become clogged. It was easy to invite.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the occurrence of transport troubles such as clogging of grain stalks in a reaping transport path while simplifying the configuration and reducing the manufacturing cost. The point is to support the culm without disturbing it.

[0009]

[Means for Solving the Problems] [Constitution] A first invention is a weeding tool for weeding a planted grain culm, a cutting device for cutting a planted grain culm raised by a raising device, and a reaper. A first transport device for scraping and transporting the harvested culm to the rear, and a left and right second transport device for collecting and transporting the harvested grain culm conveyed by the first transport device to an intermediate position in the left and right directions are provided in the cutting unit. In a harvesting unit structure of a certain combine, a first transmission shaft extending leftward and rightward is provided at a front end of a main transmission shaft extending forward and downward from the fuselage along a reaping main frame that supports the cutting unit so as to be able to move up and down. And a second vertically extending transmission shaft is erected from the first transmission shaft to the upper part of each raising device, and the first and second transmission shafts are located at the left and right ends of the second transmission shaft. The two conveyors are linked and connected, and the raking frame supporting the first conveyor is A casing surrounding the transmission shaft, characterized in that on a support in the amount grass frame supporting the minute grass tool.

A second invention is characterized in that, in the first invention, a front portion of the raking frame is attached to a raising device support frame fixed to the weeding frame.

A third invention is the first or second invention, wherein
A guide portion for forming a moving path of the second transport device is provided at a rear end portion of the scraping frame.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the first transporting device comprises: An endless belt with a projection driven by the body, and a locking and transporting mechanism for locking and transporting the raised planted grain stalk toward the rake-and-convey action area of the rake-in rotator; Are arranged at the left and right ends of the reaping unit and at the left and right middles, and the scraping rotator of the first transfer device at the left and right middles and the first at the left or right end
It is characterized in that the rotator of the transfer device is occlusally linked with the rotator.

The fifth invention is characterized in that, in the first to fourth inventions, the raking frame is detachably connected to both the casing and the weeding frame.

According to the structure of the first aspect, the power to the raising device is supplied to the main transmission shaft extending forward and downward from the fuselage, and the left and right directions interlocked with the front portion of the main transmission shaft. The first transmission shaft is transmitted from the first transmission shaft via a second transmission shaft, etc., which is provided across the respective raising devices. And the first on the left and right
The power for the second transfer device is transmitted from the first transmission shaft to the left and right pulling devices by using a second transmission shaft.

That is, each of the raising devices can be driven without providing a power distribution shaft extending between upper portions of the respective raising devices and a hanging shaft extending from the power distribution shaft to each raising device. It is not necessary to provide a transmission case surrounding them at the top of each raising device. Further, as a result, the transmission case and the like are not raised to be exposed from between the devices or from above so as not to deteriorate the appearance, and there is no need to provide a decorative cover for hiding them.

As a result, the structure can be simplified, the weight can be reduced, and the manufacturing cost can be reduced. In addition, the position of the center of gravity can be kept low, and the weight balance of the body can be stabilized. And, since the tip side of the planted grain culm caused by the raising device is not caught on the transmission case or the decorative cover, transport troubles due to transport delay or entanglement of the tip side due to it and transport troubles such as jamming of transport are caused. You can avoid it. Also, the upper part of each raising device is opened to raise the visibility of the position immediately before the raising device from the control section, and the alignment work etc. to correctly position the combine with the planted grain culm to be harvested is also performed. Easier to do.

A vertical axis extending from the first transmission shaft to each of the first transporting device and the left and right second transporting devices, a bevel gear or a worm gear for transmitting and connecting the first transmission shaft and the vertical axis are provided.
Since the first and second transfer devices can be driven without configuring a dedicated transmission unit for the first and second transfer devices, simplification of the transmission structure for the first and second transfer devices can be achieved.
In addition, the manufacturing cost can be reduced. In addition, the simplification of the transmission structure improves the downward passability of the mud and weeds that are conveyed together with the harvested culm from the cutting and conveying path, so that mud and weeds are deposited on the cutting and conveying path. It is also possible to avoid transport troubles such as poor transport of transported harvested culms and clogged transport.

The first transporting device, which is often composed of a rotator, a locking transporting belt, and the like, is located almost above the mowing device. It is a route part where the conveying density of the grain stalk is very high, which is sent backward while merging in the direction, and is a part where the support members can hardly exist originally. Therefore, by supporting the raking frame that supports the first transport device with the casing that surrounds the second transmission shaft and the weeding frame that supports the weeding device, as in the related art, Since the transmission case, which is also a support member, does not exist below, there is no hindrance or clogging of the grain stalk transport, and a smooth grain stalk transport operation can be performed. In other words, the problem of how to support the first transport device, which is positioned in the cereal culm transport path and is in a state of being suspended in the air, without hindering cereal culm transport is solved.

According to the second aspect of the present invention, the front portion of the raking frame is attached to the raising device supporting frame fixed to the weeding frame, so that the raking frame is supported by the member for supporting the raising device. A member that can also support can be used.

According to the third aspect of the present invention, since the guide portion for forming the moving path of the second transporting device is provided at the rear end of the raking frame, the member for supporting the first transporting device can be replaced with the first transporting device. It can be used as a component of the two-transport device, and the member can be shared.

According to the fourth aspect of the present invention, the first transporting device is constituted by the squeezing rotary body formed of a gear-like body and the locking transporting mechanism,
Since the left and right middle rake rotator and the left or right end rake rotator are interlocked, power is transmitted to the left and right middle rake rotator from the left or right end rake rotator. This eliminates the need for a dedicated power transmission path to the first transport device between the left and right. Therefore, it is possible to omit arranging a power transmission means such as a cylindrical case having a transmission shaft therein in a portion where the grain culm conveyance density is high, so that a smooth grain culm conveyance state without clogging can be obtained from that point. become.

According to the fifth aspect of the present invention, since the raking frame is detachably connected to both the casing and the weeding frame, the first transporting device can be detachably attached to the cutting section. Therefore, by removing the first transport device, the work of clearing the transport jam in the grain culm transport path, cleaning and inspection, and the like are facilitated, and the coping operation can be performed easily and conveniently. Also, the first
Repair and maintenance of the transfer device and the mechanical devices around the transfer device can be easily performed.

[Effect] According to the reaping portion structure according to the first aspect, (a) the simplification of the configuration, the reduction of the manufacturing cost, the improvement of the workability such as the stability of the body weight balance and the alignment, and the reaping can be achieved. Since the first transfer device existing in the confluence transfer area of the grain culm was able to be supported by the cutting unit outside the grain culm transfer path,
It has become possible to effectively suppress transport troubles such as clogging of the cereal culm in the cereal culm transport route.

According to the mowing portion structure of the second aspect, the above-mentioned effect (a) is obtained while rationalizing the member for supporting the raising device to support the raking frame.

In the mowing section structure according to the third aspect, the above-mentioned effect (a) is obtained while rationalizing the member supporting the first transport device to be a constituent member of the second transport device.

In the mowing portion structure according to the fourth aspect, the power is transmitted to the first transporting device at the middle between the left and right sides of the portion having a high grain culm transporting density by devising the rotatively rotating members formed of gears to engage with each other. The means (a) was obtained while the means was not present, and it was possible to contribute to a smooth culm transport state without clogging.

[0027] In the mowing portion structure according to the fifth aspect, the first transporting device is detachable, so that the work for clearing the clogged grain, cleaning,
Inspection has been facilitated, and the first transporting device and the peripheral devices have been easily repaired and maintained.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the front side of a front half of a self-removable combine for three-row cutting, and the combine is provided on a front part of a traveling body 1 having a pair of left and right crawler traveling devices 1A. A cutting unit 2 for cutting the planted grain culm and transporting the upper left rearward is connected so as to be able to swing up and down around a left-right axis P, and a cutting unit 2 is mounted on the left side of the traveling machine 1 from the cutting unit 2. A threshing device 3 that receives the grain culm and performs threshing and sorting processing, and on the right side of the traveling machine body 1, a grain tank 4 that stores the kernel after the sorting processing from the threshing device 3 and an operator are mounted. The control unit 5 and the like are mounted and equipped.

As shown in FIGS. 1 to 4, the cutting unit 2 acts on the root side of the planted grain culm to cause weeding, and causes four weeding tools 6 to produce weeded planted grain culm. Three raising devices 7, a clipper-type cutting device 8 for cutting the root side of the raised planted grain culm, and scraping the planted grain culm (cutted grain culm) cut by the cutting backward. A pair of left and right second transporting devices 10 that transport rearward while gathering the harvested grain culms that have been raked and transported to the left and right centers, and harvesting that is gathered at the left and right centers. It is composed of a third transporting device 11 that feeds and transports the culm from the upright posture to the threshing device 3 while gradually changing the posture from the standing posture to the sideways posture, and a reaping frame 12 that supports them.

As shown in FIGS. 3 and 4, each of the raising devices 7 includes an erect raising case 7a and a driving sprocket disposed on an upper portion of the raising case 7a on the path side (inner side) for raising the planted grain culm. 7b, a driven sprocket 7c provided under the raising case 7a, a rotating chain 7d wound around the sprockets 7b and 7c,
A plurality of raising claws 7e attached to the rotation chain 7d at regular intervals in a state where the posture can be changed between a raised posture and a stored posture, and a tension sprocket 7f disposed on an upper portion of the raising case 7a on a return path side; Raising claw 7e which rises in the raised posture
The raising of the planted grain culm is performed by the locking and lifting action of.

As shown in FIGS. 1, 2, 4 and 5,
Each first transport device 9 includes a driving pulley 9 disposed on the rear side.
a, a driven pulley 9b arranged on the front side, and a rotating belt mechanism 9c (an example of an endless belt with a projection) wound around the pulleys 9a, 9b. 9A (an example of a locking and conveying mechanism) and a packer 9B disposed below each drive pulley 9a (an example of a squeezing rotator that squeezes and transports the harvested grain culm by a gear-shaped body that is driven and rotated) The rotation belt mechanism 9 </ b> A and the packer 9 </ b> B are engaged and transported by scraping and transporting the harvested grain culm.

The second transfer device 10 on the left side includes a holding and conveying mechanism 10A and an upper and lower two-stage locking and conveying mechanism 10B. The holding and conveying action of the holding and conveying mechanism 10A and each of the locking and conveying mechanisms 10B. The gathering and transporting of the harvested grain culm is performed by the locking and transporting action of. First, the holding and transporting mechanism 10A includes a driving sprocket 1 disposed at the left end.
0a, the first driven sprocket 1 disposed at the left and right central portions
0b, a second driven sprocket 10c disposed between the drive pulley 9a and the packer 9B in the first transporting device 9 on the left side, and a protruding rotary chain 10d wound around the sprockets 10a to 10c. And so on.

The locking and conveying mechanism 10B includes a first driving sprocket 10e disposed above the driving pulley 9a in the first conveying device 9 on the left side, a first driven sprocket 10f disposed behind the driving sprocket 10f, and those sprockets 10e, 1
A first rotating chain 10g wound around 0f,
A plurality of first locking and conveying claws 10h attached to the first rotating chain 10g at regular intervals, and a first driven sprocket 1
0f, a second drive sprocket 10j,
A second driven sprocket 10k disposed behind, a second rotating chain 10m wound around the sprockets 10j and 10k, and a plurality of fixed sprockets attached to the second rotating chain 10m at regular intervals. It is composed of the second locking and conveying claw 10n and the like.

As shown in FIGS. 2, 4 and 5, the second transporting device 10 on the right side includes a driving sprocket 10a provided at the right end, a first driven sprocket 10b provided at the center in the left and right directions, Second driven sprocket 10c disposed between the driving pulley 9a and the packer 9B in the first transfer device 9 of the first embodiment, and their sprockets 10a to 10c.
Rotating chain 1 with projection wound around 10c
0d, etc., is provided, and the harvesting culm is collected and conveyed by the clamping and conveying action of the clamping and conveying mechanism 10A.

As shown in FIG. 1, FIG. 2 and FIG. 4, the third transport device 11 comprises a clamping transport mechanism 11A and a locking transport mechanism 11B.
The harvesting culm is supplied and transported by the nipping transport action of the nipping transport mechanism 11A and the locking transport action of the locking transport mechanism 11B, and the root side of the harvested grain culm is fed to the feed chain 3a of the threshing device 3. At the same time, the spike tip side of the harvested culm is guided into the threshing device 3.

The holding / conveying mechanism 11A is disposed above a driving sprocket 11a disposed on the left rear portion, a first driven sprocket 11b disposed on the left side thereof, and a first driven sprocket 10b on the second conveying device 10 on the right side. It comprises a second driven sprocket 11c, a rotating chain with projection 11d wound around the sprockets 11a to 11c, and the like.

The locking and conveying mechanism 11B includes a driving sprocket 11e disposed above the driving sprocket 11a, a driven sprocket 11f disposed above a rear part of the right first conveying device 9, and the sprockets 11e and 11f. It is composed of a rotating chain 11g wound around and a plurality of locking and conveying claws 11h attached to the rotating chain 11g at regular intervals.

Locking transport mechanism 11B of third transport device 11
Is configured to extend from above the rear part of the first transporting device 9 on the right side to the feed chain 3a of the threshing device 3, so that the front side portion thereof is locked and transported by the second transporting device 10 on the right side. It functions as 10B to carry out the gathering and transport of the harvested grain culm.

As shown in FIGS. 1 and 4, an input pulley 13 to which power from an unillustrated engine is transmitted is provided at the right end on the axis P, which is a vertical pivot of the reaper 2. A counter shaft 14 is provided in a left-right direction. The counter shaft 14 allows the raising device 7, the reaper 8, the first transport device 9, the second transport device 10, and the third transport device 11 to be moved. Transmission is performed.

The transmission structure will be described in brief. As shown in FIGS. 1, 2 and 4 to 7, a central portion of the counter shaft 14 extends forward and downward from the counter shaft 14 by interlocking with a bevel gear. The main transmission shaft 15 is mounted in a mowing main frame 12F made of a thick pipe material. At the front end of the main transmission shaft 15, the left and right central parts of the first transmission shaft 16 facing left and right are provided. At the left and right ends and the left and right central parts of the first transmission shaft 16, the corresponding lifting devices 7 are provided from the first transmission shaft 16.
The lower end of the second transmission shaft 17 extends vertically, and the upper end of each second transmission shaft 17 has a corresponding drive shaft 7g of the raising device 7.
Are connected to each other through bevel gears 18.

That is, the power input to the counter shaft 14 is applied to each of the raising devices 7 by the main transmission shaft 15 and the first transmission shaft 1.
6, and via the second transmission shaft 17. As a result, power can be transmitted to each of the raising devices 7 without providing a power distribution shaft or the like that is laid across the drive shaft 7g disposed on the upper portion of each of the raising devices 7. It is not necessary to provide a transmission case surrounding the lens, a decorative cover for improving the appearance, and the like at the top of each raising device 7, so that the configuration can be simplified and the manufacturing cost can be reduced, and the position of the center of gravity can be reduced. Can be kept low, and the weight balance of the aircraft can be stabilized.

Further, since the tip side of the planted grain stem raised by each raising device 7 does not get caught on the transmission case or the decorative cover covering the power distribution shaft or the like, the tip side conveyance caused by the hooking is prevented. It is possible to prevent a transport trouble such as a transport failure or a transport jam due to delay or entanglement. In addition, as shown in FIG. 3, the space between the upper portions of the respective raising devices 7 is opened, and the visibility of the weeding tools 6 and the like immediately before the raising devices 7 from the control unit 5 is improved. In addition, it is easy to perform a setting operation or the like for correctly positioning the combine on the planted grain stem to be cut.

As shown in FIG. 1, FIG. 2 and FIGS. 4 to 7, each second transmission shaft 17 is composed of a lower shaft portion 17b and an upper shaft portion 17c which are operatively connected via a bevel gear 17a.
It has a split structure. Of the lower shaft portions 17b, the left and right lower shaft portions 17b are directed toward the upper portions of the corresponding left and right raising devices 7 and the central lower shaft portion 1
Numerals 7b are set at right angles to the first transmission shaft 16 in a state toward the lower part of the corresponding central raising device 7.

The right and left upper shaft portions 17c of the respective upper shaft portions 17c are connected to the corresponding drive shafts 7 of the left and right raising devices 7.
g, and the central upper shaft portion 17c is connected to the drive shaft 7
In a state where they are tilted toward g, the postures are set so as to extend from the lower shaft portion 17b to which the power is connected and connected to the drive shaft 7g of the device 7.

Of the lower shaft portions 17b, the driving sprockets 10a of the holding and conveying mechanism 10A of the corresponding second conveying device 10 are externally fitted to the left and right lower shaft portions 17b so as to rotate integrally. That is, the left and right second transmission shafts 1
In a state in which the lower shaft portion 17b of 7 is also used as a drive shaft of the second transfer device 10, the corresponding left and right second transmission shafts 17 and the second transfer device 10 are interlocked.

In the second transporting device 10 on the left, the second driven sprocket 10c of the clamping transporting mechanism 10A and the first driving sprocket 10e of the lower locking transporting mechanism 10B are connected to the left packer 9B and the first rotating shaft 10p. And are connected so as to rotate integrally. Also, the first driven sprocket 10f of the lower engaging and conveying mechanism 10B and the second driving sprocket 10j of the upper engaging and conveying mechanism 10B are the second driven sprocket 10j.
They are connected via a rotating shaft 10q so as to rotate integrally. That is, in the second transfer device 10 on the left,
The power from the transmission shaft 17 is transmitted to the upper and lower locking and conveying mechanisms 10B via the holding and conveying mechanism 10A.

The drive pulley 9a and the packer 9B in each of the left and right first transfer devices 9 are connected to the corresponding left and right second transfer device 1 respectively.
0 and is connected so as to rotate integrally with the second driven sprocket 10c of the holding / conveying mechanism 10A. On the other hand, the first transporting device 9 in the center has its drive pulley 9a and packer 9
B and B are connected so as to rotate together, and the packer 9B is meshed with the packer 9B of the first transporting device 9 on the right side. That is, the corresponding left and right second transfer devices 10 and the first transfer device 9 are interlocked and connected, and
The first transfer device 9 at the center is connected to the transfer device 9 in an interlocked manner, and the power from the second transmission shaft 17 is transmitted to each first transfer device 9 via the second transfer device 10.

As shown in FIGS. 1, 2 and 4, the third transfer device 11 has a bevel gear 2 at the left end of the counter shaft 14.
1 and a driving sprocket 11a of a clamping and conveying mechanism 11A and a locking and conveying mechanism 1
The drive sprocket 11e of 1B is externally fitted so as to rotate integrally. That is, the power from the counter shaft 14 is transmitted to the third transfer device 11 via the third transmission shaft 22.

As shown in FIG. 1 and FIGS. 5 to 7, the raising device 7 such as the counter shaft 14 and the main transmission shaft 15, the mowing device 8,
Each transmission system for the first transport device 9, the second transport device 10, and the third transport device 11 is housed in a member constituting the cutting frame 12. That is, the mowing frame 12
It is composed of a casing surrounding these transmission systems. Therefore, in the reaping frame 12, the left and right second
Openings 12a are formed in the left and right casings 46 and 48 surrounding the lower shaft portion 17b of the transmission shaft 17 so as to allow the rotation chain 10d with the projection of the second transfer device 10 to be inserted therethrough.
From this opening 12a, a rotating chain 10d with a projection is wound around a driving sprocket 10a mounted on the lower shaft portion 17b.

Next, the support structure of the first transfer device 9 will be described. As shown in FIG. 8, in each of the raking frames 43 to 45 supporting each first transporting device 9, the rear side is in the casings 46 to 48 surrounding the second transmission shaft 17, and the front side is the weeding tool. 6 is detachably attached to a raising device supporting frame 49 fixed to a weeding frame 12x supporting the unit 6 by bolting.

The right raking frame 43 on the right side is bolted to the main pipe 51 whose front end is bolted to a stay 50 projecting rearward from the right raising device support frame 49, and to the right casing 48. A bracket 53,
The bracket 53 is provided with an auxiliary pipe 52 provided at a rear end thereof, and supports a transport cover 54 which is also a member constituting a transport route of the grain culm.

A drive pulley 9a and a support shaft 9p of a packer 9B are fixed through the main pipe 51 at the front and rear intermediate portions, and a stay 51b for supporting a driven pulley 9b, which is a tension pulley, for a long hole is welded to a front end portion. A support shaft 55 for rotatably supporting the first driven pulley 10b (an example of the guide portion G) of the right holding and transporting mechanism 10A is fixed through the rear end portion. An auxiliary pipe 52 is provided on the support shaft 9p of the main pipe 51.
The tip of is welded. The transport cover 54 (61) covering the rotating belt 9c with the projection from above is press-formed into a stepped shape to increase the strength (see FIG. 9).

As shown in FIGS. 10 and 11, the bracket 53 is made of a plate material bent in a U-shape in plan view, and is formed by joining a front case portion 48a and a rear case portion 48b constituting the right casing 48. Are fixed together with four bolts for connecting these case portions 48a, 48b. And this bracket 53
Is welded to the rear end of the auxiliary pipe 52 bent downward.

As shown in FIGS. 8 and 9, the left left raking frame 45 has a front end bolted to a vertical plate-like stay 56 projecting rearward from the left elevating device support frame 49. A main pipe 57, a bracket 59 bolted to the left casing 46, and the bracket 59
And an auxiliary pipe 58 provided at the rear end thereof, and supports a transport cover 61 which is also a member constituting a transport route for the grain culm. The transport cover 61 has basically the same structure as the right raking frame 43.

A stepped transfer cover 61 formed by press molding in the same manner as the right transfer cover 54 is supported by two front and rear stays 62 and 63, and the rear stay 63 is supported by a driving pulley 9 a and a support shaft of the packer 9 B. 10p is equipped. An auxiliary pipe 58 is constructed to extend over a main bracket 57 and a left bracket 59 which has the same structure as the right bracket 53 and is fastened together by a connecting bolt between the front case part 46a and the rear case part 46b of the left casing 46. At the same time, a sheet metal guide body 65 (an example of the guide portion G) for forming a movement path of the protruding rotation chain 10d is attached to the rear end of the main pipe 57 and the left bracket 59.

As shown in FIGS. 8 and 12, the raking frame 44 at the left and right center is basically a pipe frame 67 bolted to a pipe casing 47 surrounding the upper shaft portion 17c at the left and right center. Consists of only
The press-formed transport cover 68 functions as an auxiliary frame. That is, the pipe frame 6 whose rear end is bolted to the bracket 66 fixed to the casing 47
The transport cover 68 is fixed to the front cover 7, and the front end of the transport cover 68 is bolted to a stay 60 projecting rearward from the second raising device supporting frame 49 from the left.

The drive pulley 9a and the support shaft 67a of the packer 9B are fixed to the front end of the pipe frame 67.
Further, the bolted portion between the transport cover 68 and the stay 60 has an elongated hole supporting structure for enabling the driven pulley 9b to be adjusted in tension. That is, the raking frames 43 to 45 of any of the three first transporting devices 9 are supported at two places, namely, the casings 46 to 48 surrounding the second transmission shaft 17, which hinders grain culm transport. I try not to be.
Each of the three raking frames 43 to 45 has a detachable structure by bolting.

As shown in FIG. 13 and FIG.
Is a receiving blade 24 fixed to a receiving blade base 23 mounted over a plurality of weeding frames 12x extending forward to mount the fixed weeding tools 6 on the mowing frame 12, and left and right sides thereof. And a knife blade 27 fixed to the cutting blade 25 via a mounting stay 26. The knife head 27 includes a plate material bent in a rearward open U-shape in plan view, and has a bearing roller 29 rotatably supported by a crank mechanism 28 around a longitudinal axis X. Just knife head 2
7 is fitted inside in a state that matches the inside dimensions.

The crank mechanism 28 welds the cutting blade crank 30 to the tip of the cutting blade drive shaft 20 which is a crank shaft,
A bearing roller 29 is rotatably fitted to the cutting blade crank 30 so as to be externally supported. The rear part of the weeding frame 12x at the right end is bent to the left, and the shaft supporting case part 3 to be described later is connected via a flange 42 fixed to the rear end.
It is bolted to the side of 5a.

The cutting blade 25 and the mounting stay 26 are
A slider plate 33 which is integrated with a rivet or the like together with a slider 31 which is a knife bar which slides on the rear end surface, and which is tightened up and fixed together with a knife clip 32 which holds down the cutting blade 25.
However, the cutting blade 25 is configured to be slidably moved only left and right so as to be in sliding contact with the rear end surface of the slider 31 so as to be positioned in front and rear and up and down.

Then, on the rear side of the right side portion of the blade rest 23,
The bearing roller 29, that is, the cutting blade crank 30, is arranged and configured. The cutting blade drive shaft 20 provided with the cutting blade crank 30 at the front end is supported in a front-rear direction with respect to a shaft supporting case portion 35a formed integrally with the casing 35 of the cutting transmission shaft 16, and its shaft core Q is It is located approximately at the center of the knife head 27 in the vertical direction.

The cutting blade crank 30 is formed in a disk shape integrally provided with a first balance weight 34 swelling in the axial direction on the side opposite to the bearing roller 29 mounting portion with respect to the rotational axis Q. As a balancer for canceling the vibration caused by the lateral movement of the cutting blade 25 and reducing the vibration caused by the rotation of the cutting blade crank 30, the cutting blade drive shaft 2
It also functions as a flywheel that smoothes load fluctuations caused by the zero rotation.

The cutting blade drive shaft 20 has a bevel gear mechanism 38 having an occlusal structure of a small-diameter bevel gear 36 fitted to the rear end thereof and a large-diameter bevel gear 37 fitted to the cutting transmission shaft 16.
Thus, the rotational power is transmitted. A countershaft 39, which is linked to the mowing transmission shaft 16 via a bevel gear mechanism 38 and rotates at the same speed at the same speed per unit time in the direction opposite to the rotating direction of the mowing blade drive shaft 20, It is taken out rearward so as to be concentric with the drive shaft 20, and at the rear end of the counter shaft 39,
Second balance weight 40 that opposes lateral movement of cutting blade 25
Is provided.

That is, a counter shaft 39 is rotatably supported on a second shaft support case portion 35b formed integrally with the casing 35 at the rear side of the shaft support case portion 35a, and a large-diameter bevel gear 37 is mounted on the counter shaft 39. The small-diameter bevel gear 41 that meshes with the small-diameter bevel gear 36 of the cutting blade drive shaft 20 is fitted as the same component (having the same diameter and the same number of teeth). The second balance weight 40 has a weight 40a provided on the outer peripheral end of the disk 40b. When the position of the center of gravity of the first balance weight 34 is directly above the axis Q, the second balance weight 40 is A bevel gear mechanism 38 including three bevel gears 36, 37, 41 is set so that the center of gravity is located directly below the axis Q.

The first balance weight 34 is provided such that its center of gravity is located on the opposite side to the crank mechanism 28 with respect to the cutting blade drive shaft 20, and corrects the eccentricity of the cutting blade drive shaft 20 due to the presence of the crank mechanism 28. And a function of moving the cutting blade 25 to the side opposite to the lateral movement thereof to cancel the moving inertia of the cutting blade 25. However, since the mass for canceling the inertia of the cutting blade 25 is larger than the mass of the crank mechanism 28, the first balance weight 3 in the vertical direction in which the inertia canceling action with the cutting blade 25 does not function.
When 4 moves, the rotational balance is still unbalanced, and vibration is likely to occur.

Therefore, the cutting blade drive shaft 20 and the counter shaft 39 having the coaxial core Q are configured so that these two shafts 20 and 39 are driven to rotate at the same speed in opposite directions to each other. By providing the second balance weight 40 that opposes the lateral movement of the blade 25, a means for eliminating the above-described vertical vibration is configured. The cutting blade drive shaft 20 and the counter shaft 39 are independently supported by bearings, and the cutting power transmission shaft 16 may be a single component as in the prior art, and a hexagonal shaft extending right and left through the bevel gear mechanism 41. Is configured.

As shown in principle in FIG.
The weight 40a of the balance weight 40 is such that when the cutting blade 25 is in the middle of the right and left reciprocating motion, the weight 40a has a reciprocal positional relationship with the first balance weight 34 in the vertical direction about the axis Q. The weight 40a is set to the same position in the up and down direction with respect to the bearing roller 29 while rotating in the reverse direction.

As shown in principle in FIG. 15 (b), at the moment when the cutting blade 25 reaches the end of the left and right reciprocating motion, the weight 40a of the first balance weight 34 and the second balance weight 40 Are located on the same side in the left-right direction, and are moving in opposite directions in the up-down direction,
The bearing rollers 29 are set so as to be opposite to each other in the left-right direction.

[Alternative Embodiment] The main power transmission shaft 15 may be arranged in parallel at a position near the outside of the reaping main frame 12F, as long as it is "a state along the reaping main frame".

[Brief description of the drawings]

FIG. 1 is a side view of a front part of a self-removing combine.

FIG. 2 is a plan view showing a configuration of a reaper transport unit.

FIG. 3 is a front view showing a configuration of a reaper transport unit.

FIG. 4 is a system diagram showing a power transmission system of a reaper conveyance unit.

FIG. 5 is a plan view showing a pre-processing portion of the reaper.

FIG. 6 is a partially cutaway front view showing a main part of the transmission system in FIG. 5;

FIG. 7 is a side view of a main part showing a transmission structure of the second transfer device on the left side.

FIG. 8 is a plan view showing the structure of each raking frame.

FIG. 9 is a side view of a partially cutaway portion showing a left-side scraping frame portion.

FIG. 10 is a partially cutaway plan view showing a bracket portion of the right raking frame.

11 is a front view of FIG.

FIG. 12 is a side view of a partially cutaway portion showing a central scraping frame portion.

FIG. 13 is a side view of a partially cutaway showing a drive structure of the reaper.

FIG. 14 is a partially cutaway plan view showing the drive structure of the reaper.

FIG. 15 is a principle diagram showing a balancer action by first and second balance weights;

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 2 Cutting unit 6 Weeding tool 7 Raising device 8 Cutting device 9 First transporting device 9A Locking transporting mechanism 9B Scraping rotator 9c Endless belt with projection 10 Second transporting device 12F Cutting main frame 12x Weeding frame 15 Main drive Shaft 16 First transmission shaft 17 Second transmission shaft 43-45 Raised frame 46-48 Casing 49 Raising device support frame G Guide portion

Claims (5)

[Claims] 1. A weeding tool for weeding a planted grain culm, a cutting device for cutting a planted grain culm raised by a raising device, and a first device for rearwardly transporting the harvested grain culm. A transport device and the first
A harvesting section structure of a combine provided with a left and right second transporting device that collects and transports the harvested grain culm conveyed by the transporting device to a left and right intermediate position, and a harvesting portion structure of the combine, wherein the mowing portion can be raised and lowered. A first left-right transmission shaft is connected to the front end of the main transmission shaft extending forward and downward from the fuselage along the reaping main frame supported by
A second vertically extending transmission shaft is erected from the first transmission shaft to an upper portion of each raising device, and the first and second transfer devices are disposed at left and right ends of the second transmission shaft. The harvester structure of a combine harvester, wherein a raking frame supporting the first transport device is supported by a casing surrounding the second transmission shaft and a weeding frame supporting the weeding implement. . 2. The harvester structure for a combine harvester according to claim 1, wherein a front portion of the raking frame is attached to a raising device supporting frame fixed to the weeding frame. 3. The harvesting structure of a combine harvester according to claim 1, wherein a guide portion for forming a movement path of the second transport device is provided at a rear end of the raking frame. 4. A raking rotator that rakes and transports the harvested grain stalks rearward with a gear-like body that is driven and rotated;
An endless belt with a projection driven by the raking rotator constitutes a locking and conveying mechanism that locks and raises the raised planted grain stalk toward a rake and convey operation area of the rubbing rotator, The first transporting device is disposed at the left and right ends of the reaping unit and at the left and right middles, and the squeezing rotary body of the first transporting device at the left and right middle and the squeezing rotary body of the left or right end first transporting device The reaping part structure of a combine according to any one of claims 1 to 3, which is occlusally linked. 5. The raking frame is detachably connected to both the casing and the weeding frame.
The reaping part structure of a combine according to any one of the above.