JP7105741B2 - combine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester having a reaping part for reaping planted culms at the front part of the machine body and an operating part positioned at the rear of the reaping part and on one side in the left-right direction of the machine body.

This type of combine is provided with a conveying device that merges a plurality of harvested grain culms in the left-right direction and conveys them rearward. A one-side conveying section is provided that extends toward the rear of the fuselage by bending toward the rear of the fuselage while passing in front of the driving section from one end in the left-right direction. The one-side conveying unit is provided with a stem clamping and conveying device for clamping and conveying the stem side portion of the harvested grain culm and a tip locking and conveying device for locking and conveying the tip side of the harvested grain culm. Conventionally, the tip side of the culm has been received and guided by a sliding guide plate at a backward bend in the conveying path (see, for example, Patent Document 1). In addition, in Patent Document 1, an auxiliary conveying device for rotating an endless rotating body with locking projections is provided at a location facing the tip locking conveying device.

JP 2010-4841 A

In the above-described conventional configuration, the tip-locking and conveying device of the one-side conveying section conveys the reaping grain culms while locking the tip side thereof. There is a risk that the tip side of the harvested stalks that have been harvested will move in a direction away from the conveying path due to inertial force. In the region where the auxiliary conveying device guides along the conveying path as described above, the tip side is received, but at the conveying end portion of the auxiliary conveying device, the locking projection is in the direction away from the tip locking conveying device of the one side conveying section. There is a risk that the culm will rotate outward and move the harvested grain culm outward.

Therefore, although the one-side conveying portion that passes through the front of the driving portion and bends toward the rear of the machine body and extends toward the rear of the machine body, the harvested culms are separated from the conveying route at the bent portion, and good conveyance is performed. It has been demanded to avoid the risk of breaking or the like.

The characteristic configuration of the combine according to the present invention is provided in the front part of the machine body, a reaping part for reaping planted grain culms, and a driving part located behind the reaping part and on one side in the left and right direction of the machine body,
A plurality of weed dividing tools for partitioning and forming a plurality of grain culm introduction paths, and a plurality of grain culms provided corresponding to each of all the grain culm introduction paths and causing planting grain culms in the harvesting part. A lifting device, a harvesting device that cuts a plurality of planted grain culms introduced into all the grain culm introduction paths, and a conveying device that merges the harvested grain culms in the left-right direction and conveys them backward. and the conveying device includes a one-side conveying portion that extends from one end of the reaping portion in the left-right direction of the machine body toward the rear of the machine body by bending toward the rear of the machine body while passing in front of the operating portion. The one-side conveying unit is provided with a stock base pinching and conveying device that pinches and conveys the base side of the harvested grain culm, and a tip locking conveying device that holds and conveys the tip side of the harvested grain culm, an upper tip guide portion that guides a portion of the harvested grain culm above the locking action position of the tip locking and conveying device in the bent portion of the one-side conveying portion while pushing it toward the driving portion side; a lower tip guide portion that guides a portion of the harvested grain culm below the locking action position of the tip locking and conveying device in the curved portion of the one-side conveying portion while pushing it toward the driving portion side; is provided.

According to the present invention, in the curved portion of the one-side conveying portion that passes in front of the driving portion and bends toward the rear of the machine body, the tip side of the harvested grain culms that are conveyed is forced in the direction away from the conveying path by inertial force. Even if the upper tip guide part is subjected to a turbulence, the part of the harvested culm above the locking action position by the tip locking and conveying device is guided toward the driving part while being pressed. As a result, it is possible to precisely prevent the tip side of the harvested grain culm from moving away from the conveying path at the bent portion.

Therefore, although it is provided with one side conveying portion that passes through the front of the driving portion and bends toward the rear of the machine body and extends toward the rear of the machine body, the harvested culms are separated from the conveying route at the bent portion, and good conveyance is performed. It has become possible to avoid the risk of breaking.
In addition, at the curved portion of the one-side conveying portion, the lower tip guide portion guides the portion of the harvested grain culm that is below the locking action position of the tip locking and conveying device. That is, the harvested grain culms are guided while being pressed toward the drive unit side at locations above and below the locking action position of the tip locking and conveying device. Therefore, since the harvested culms are guided while being pressed by both upper and lower sides, they can be transported in the upright posture without being bent.

In the present invention, a central conveying section is provided for conveying harvested grain culms in a row positioned on the center side in the left-right direction of the machine body among the plurality of rows so as to join the one-side conveying portion, and the upper tip guide portion is provided. It is preferably supported by the support frame of the central transport section.

According to this configuration, the harvested grain culm in the row positioned on the center side in the left-right direction of the machine body is conveyed by the central conveying section. The upper tip guide portion is supported by a support frame provided in the central transport portion. In this way, the support frame for supporting the central conveying section, which is originally required, is effectively used to support the upper tip guide section without complicating the configuration such as providing a special support member separately. can do.

In the present invention, the central conveying portion is provided with a one-side central conveying portion positioned on one side in the left-right direction of the machine body, and a other-side central conveying portion positioned on the other side in the left-right direction of the machine body, and the one-side central conveying portion After the grain harvested culms conveyed by the one side conveying unit are merged, the grain harvested culms conveyed by the other side central conveying unit are merged with the one side conveying unit, and the support A frame includes a one-side support frame for the one-side central conveying section and the other-side support frame for the other-side central conveying section, and the upper tip guide section includes the one-side support frame and the other-side support frame. It is preferred that it is supported throughout.

As the number of cut rows increases, the number of rows positioned at the center in the left-right direction of the machine body also increases. In this configuration, the upper tip guide section is supported across the one side support frame of the one side central transportation section and the other side support frame of the other side central transportation section. By supporting both sides of the upper tip guide part in this way, it is possible to guide the harvested grain culms over a long path, and at the same time, it is possible to stably and firmly support the upper tip guide part. .

In the present invention, it is preferable that the lower tip guide portion is supported by the one-side support frame.

In the present invention, a merging tip guide portion for holding and guiding the harvested grain culms transported by the other side central transport portion so as to join the one side transport portion is provided, and the guide direction of the lower side tip guide portion It is preferable that the downstream side end portion and the guiding direction downstream side end portion of the merging tip guide portion are connected.

According to this configuration, the upper end in the guide direction of the lower tip guide portion is supported by the support frame, and the lower end in the guide direction is connected to the lower end in the guide direction of the merging tip guide portion. By configuring in this way, the grain culms conveyed by the one-side conveying section and the harvested grain culms conveyed by the other-side central conveying section can be smoothly merged, and furthermore, the lower tip guide section and the Compared to the case where the merging point guide part is provided in a free state in a cantilever shape, it is difficult to cause bending deformation and the like, and excellent durability can be achieved.

It is the whole combine side view. It is the whole combine top view. It is a side view of a reaping part. It is a front view of a combine. It is a figure which shows a transmission structure. It is a front view which shows a conveying apparatus and an operation|movement part. It is a top view which shows a conveying apparatus. It is a front view which shows the relationship between a crawler traveling apparatus and a reaping work area. It is a top view which shows a branch transmission structure. It is a longitudinal side view which shows a branch transmission structure. It is a partially notched side view of the reaping part which shows branch transmission structure. FIG. 4 is a vertical cross-sectional view showing a transport state of harvested grain culms in the vicinity of a bend. It is a longitudinal side view of a second intermediate conveying section. It is a top view which shows the tip side grain culm conveyance state of a conveying apparatus. It is a top view which shows the stock base side grain culm conveyance state of a conveyance apparatus. It is a top view of a 1st intermediate|middle conveyance part. It is a front view of a 1st intermediate|middle conveyance part. FIG. 11 is a plan view of a fourth intermediate conveying section; It is a front view of a fourth intermediate conveying section. FIG. 11 is a plan view showing a tip guiding state at a confluence point of the second intermediate conveying section and the third intermediate conveying section; FIG. 11 is a plan view showing a stock base guide state at a confluence point of the second intermediate conveying section and the third intermediate conveying section; It is a sectional view showing a grain culm conveying state.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the combine which concerns on this invention is described based on drawing.

In this embodiment, the direction indicated by symbol (F) in FIGS. 1 and 2 is the front side of the fuselage, and the direction indicated by symbol (B) in FIGS. 1 and 2 is the rear side of the fuselage. The direction indicated by the symbol (L) in FIG. 2 is the left side of the fuselage, and the direction indicated by the symbol (R) in FIG. 2 is the right side of the fuselage.

〔overall structure〕
As shown in FIGS. 1 and 2, the combine according to the present invention includes a traveling body 1 and a reaping section 2 capable of reaping seven planted grain culms. The reaping unit 2 is connected to the traveling machine body 1 so as to be able to swing up and down around a horizontal axis P1, and is provided so as to be driven up and down by a hydraulic cylinder 3 for elevating.

The traveling machine body 1 is provided with left and right crawler traveling devices 4R and 4L as traveling devices, and has an operation unit 5 on the right side (one side in the left-right direction) of the front part of the machine body. A state in which a threshing device 6 for threshing the culms harvested by the harvesting unit 2 and a grain tank 7 for storing grains obtained by the threshing processing are arranged in the lateral direction of the machine behind the operation unit 5. is provided with The operating part 5 is covered with a cabin 8 . Although not shown, the threshing device 6 thresh the tip side of the harvested grain culm transported from the harvesting unit 2 while nipping and transporting it with the threshing feed chain 9, and threshing the tip side of the threshing chamber. Grains and dust are sorted out in the sorting unit provided at the bottom. Grains are stored in a grain tank 7, and dust is discharged outside the machine. A grain discharging device 10 capable of discharging the grains stored in the grain tank 7 to the outside and a shredding device 11 for discharging out of the machine after shredding discharged straw after threshing processing are provided. .

The reaping unit 2 includes a plurality of (eight) weeding tools 12 which are provided at intervals in the left-right direction and which partition and form seven grain culm introduction paths Q1 to Q7, and all of the grain culm introduction paths Q1. to Q7, and introduces seven culm raising devices 13 (hereinafter simply referred to as raising devices) for raising the planting culms, and introduced into all the grain culm introduction paths Q1 to Q7. A clipper type harvesting device 14 for cutting planted grain culms and a conveying device 15 for merging the harvested grain culms in the cutting width direction and conveying them rearward are provided.

Of the eight weeding tools 12, the two weeding tools 12 located on the outermost lateral side of the machine body divide planted grain culms into culms to be harvested and those not to be reaped, and divide the culms to be harvested. It is introduced into the lifting path adjacent to the tool 12 and guides the non-target culms laterally outside the lifting path. The other weed dividing tool 12 divides the culms to be planted on the two planting rows on both lateral sides of the weed dividing tool 12 and introduces them into the raising paths on both lateral sides of the weed dividing tool 12.例文帳に追加The culm introduction paths Q1 to Q7 have widths defined by the weed dividing tools 12 on both the left and right sides, and are used to introduce one row of planting culms.

[Frame structure of the reaping part]
Next, the frame structure of the reaping part 2 will be described.
As shown in FIG. 1, a front-rear cylindrical reaping support frame 16 is provided to support the reaping part 2 as a whole so that it can move up and down with respect to the traveling body 1 . The reaping support frame 16 has a horizontal pivot portion 17 provided on the base end side of the rear upper portion, which is supported by a support base 18 on the body side so as to be rotatable around a horizontal axis P1. The reaping support frame 16 extends from the support base 18 toward the front and downward of the machine body.

As shown in FIGS. 2 and 9, the reaping support frame 16 is provided in a position corresponding to the rear of the fifth culm introduction path Q5 from the right end among the seven culm introduction paths Q1 to Q7. ing. As will be described later, the fifth grain culm introduction route Q5 is a location where one row of harvested grain culms is conveyed.

A cylindrical lower lateral frame 19 is connected to the front end of the reaping support frame 16 and extends in the left-right direction, that is, in the reaping width direction. As shown in FIG. 1, front-rear splitting frames 20 on both left and right sides are connected to both ends of the lower lateral frame 19 in the machine body width direction so as to extend toward the front of the machine body. A rectangular tube-shaped cutting blade support frame 21 extending in the lateral width direction of the machine body is connected to the cutting blade support frame 21 extending in the lateral width direction of the machine body in a state of being bridged between the front and rear middle portions of the grass dividing frames 20 on the left and right ends. The reaping device 14 is supported by a reaping blade support frame 21 .

As shown in FIGS. 8 and 9, the lower horizontal frame 19 includes an intermediate frame body 22 integrally provided at the front end of the reaping support frame 16 and a left side frame body 22 flange-connected to the left side portion of the intermediate frame body 22 . It has a frame body 23 and a right frame body 24 that is flange-connected to the right side portion of the intermediate frame body 22 . The reaping support frame 16 and the intermediate frame body 22 are integrally formed by casting or the like. The left frame body 23 is formed by casting or the like. The right frame body 24 is long because of the 7-row cutting, and the right frame body 24 is produced by, for example, sheet metal working.

A plurality of divided grass frames 20 are provided at intervals between the divided grass frames 20 at both left and right ends. The dividing grass frame 20 in the intermediate portion is connected at the rear end portion to the cutting blade support frame 21 and extends in a cantilevered manner toward the front of the machine body. A total of eight grass-dividing frames 20 are provided, and the front end of each grass-dividing frame 20 is provided with a weed-dividing tool 12, respectively.

As shown in FIG. 1, a cylindrical left vertical frame 25 extends upward from the left end of the lower horizontal frame 19 . Although not shown, a vertical frame extends upward from the right end of the lower horizontal frame 19 as well. An upper horizontal frame 26 is connected across the upper end of the left vertical frame 25 and the upper end of the right vertical frame (see FIG. 3). The upper lateral frame 26 extends in the left-right direction across the upper ends of the seven lifting devices 13 and is connected to the upper ends of the respective lifting devices 13 .

Each of the seven lifting devices 13 is connected to the upper horizontal frame 26 on the upper side and to the dividing frame 20 on the lower side. Therefore, each lifting device 13 functions as a frame member that connects the upper lateral frame 26 and the dividing grass frame 20 in the connected state.

[Positional relationship between traveling device and reaping position]
As shown in FIGS. 4, 6, and 8, the reaping unit 2 has a lateral outer end TL of the left crawler traveling device 4L, which is the left end of the seven culm introduction paths Q1 to Q7. and the lateral outer end TR of the right crawler traveling device 4R is positioned within the width of the right end grain culm introduction route Q1 among the seven grain culm introduction routes Q1 to Q7. It is configured.

More specifically, the left outer end KL of the reaping work area W, which is a work area where the reaping work is performed by the reaping device 14, is positioned outward to the left with respect to the lateral outer end TL of the left crawler travel device 4L. Out of position. Further, the right outer edge KR of the reaping work area W is displaced leftward and outward with respect to the lateral outer edge TR of the right crawler traveling device 4R.

With the reaping unit 2 configured as described above, the left and right crawler traveling devices 4R and 4L do not step on the uncut culm during the reaping work, and the reaping work can be performed satisfactorily. Further, as shown in FIG. 4, the lateral position of the right end portion (an example of one side in the lateral direction) of the traveling body 1 and the lateral position of the right outer end portion KR of the reaping work area W are approximately the same. configured to be in the same position.

To explain the positional relationship between the traveling machine body 1 and the reaping work position, as shown in FIG. It is configured to be located at substantially the same position as the lateral outer end position KR. A lateral outer end portion on the right side of the traveling body 1 is an outer end portion of a handrail 8 a for getting on and off which is provided in a fixed state on the lateral side of the cabin 8 . In addition, the rearview mirror 8b provided in the cabin 8 protrudes outward in normal use, but is swingable at the fulcrum portion of the base end portion, and moves inward from the outer end portion of the handrail 8a. It is storable.

The position EL of the left lateral outer end of the traveling body 1 in the lateral direction is displaced from the position KL of the left lateral outer end of the reaping work area W to the inner side in the lateral direction. A lateral outer end portion on the left side of the traveling body 1 is an outer end portion of an exterior case 6a (see FIG. 2) of the threshing device 6. As shown in FIG.

[Lifting device]
As shown in FIGS. 1 and 3, the lifting device 13 is provided in a standing posture in which the lower end side is positioned toward the front side of the fuselage and the upper end side is positioned toward the rear side of the fuselage toward the rear side of the fuselage. As shown in FIG. 4, the lifting device 13 includes a driving sprocket 28 and a tensioning sprocket 29 positioned above, and a driven sprocket 30 positioned below, inside a lifting case 27 that also serves as a frame. The endless rotating chain 31 is provided with a plurality of lifting claws 32 at predetermined intervals along the longitudinal direction. The lifting pawl 32 is supported by the endless rotating chain 31 so as to be able to change its posture between a standing posture and a lying posture.

As shown in FIG. 5, a pulling drive shaft 33 extending in the left-right direction is provided across the upper portions of the seven pulling devices 13 . Power from the pull-up drive shaft 33 is transmitted to the drive sprocket 28 via a relay transmission shaft 35 provided in the relay transmission case 34 . Although not shown, the lifting drive shaft 33 has a hexagonal cross-sectional shape and is configured to transmit power in a square fitting state.

In the lifting device 13, one of the vertical movement paths on the left and right sides of the endless rotating chain 31 is set as a lifting action path, and the other side is set as a non-action return path. Although not shown, a guide plate that guides the lifting pawl 32 upright is provided at a position through which the endless rotating chain 31 passes in the lifting action path.

As shown in FIG. 4, among the plurality of lifting devices 13, the lifting devices 13 other than the fifth lifting device 13 from the right side are arranged so that the lifting claws 32 face each other on the left and right sides. ing. The fifth lifting device 13 from the right is arranged in a state in which the lifting claw 32 protrudes leftward and stands upright.

In the lifting action path, the lifting claws 32 protruding sideways move upward while combing up the culm, and when reaching the end of the lifting action path, the lifting device 13 separates from the culm and raises it. Then, it is housed inside the case 27, descends along the non-acting return path, and returns to the action path side. As a result, each raising device 13 raises and processes planted grain culms introduced into the raising path by the raising claws 32 moving upward.

Two grain culm lifting devices 13 adjacent to each other with their lifting claws 32 facing each other are provided in a state in which the lifting action regions M by the respective lifting claws 32 overlap. That is, as shown in FIG. 4, the positions are set so that the raising action areas M by the left and right raising claws 32 facing each other overlap by a set amount m in the left-right direction. The left and right raising claws 32 facing each other are set in rotation phase so as to move upward while being slightly displaced in the vertical direction. By configuring the lifting action area M to overlap in the left-right direction in this way, the entire width of the reaping part 2 in the left-right direction can be made as small as possible so that the entire machine body can be loaded on the bed of a truck. The width in the left-right direction is set to a width that fits within the left-right width of the loading platform.

[Reaper]
The reaping device 14 is formed in a long shape over the entire width in the left-right direction (corresponding to the cutting width direction) so as to act on the planted grain stalks of all the reaping target rows (seven rows). Consists of blades. The full length of the reaping device 14 in the left-right direction corresponds to the reaping work area W of the reaping unit 2 in the left-right direction.

Then, as shown in FIG. 8, the position of the left outer end KL of the reaping work area W in the reaping unit 2 in the left-right direction is outside the position of the lateral outer end TL of the left crawler traveling device 4L. It is out of position. In addition, the position of the right outer end KR of the reaping work area W in the left-right direction is displaced rightward and outward from the position of the lateral outer end TR of the right crawler traveling device 4R.

As shown in FIG. 8, the reaping device 14 includes two sets of clipper-type cutting blades 36 arranged side by side in the horizontal direction and left and right cutting blade driving mechanisms for driving the two sets of cutting blades 36, respectively. 37 are provided. Although not described in detail, each of the left and right cutting blades 36 has a large number of fixed blades arranged side by side in the horizontal direction, and a large number of movable blades arranged side by side in sliding contact with the upper side of the fixed blades. . A cutting blade drive mechanism 37 acting on a movable blade operating body 38 provided near the outer side of the left and right cutting blades 36 drives the movable blades reciprocally to the left and right along the width direction of the machine body.

The cutting blade driving mechanism 37 includes an arm 40 having an operating roller 39 at one end that engages with the movable blade operating body 38, an interlocking rod 41 having one end connected to the other end of the arm 40, and the interlocking rod 41. It has a drive rotor 42 that functions as a crank arm connected to the other end. Then, the rotational driving force of the drive rotor 42 is converted into reciprocating force to reciprocate the movable blade left and right.

[Conveyor]
Next, the conveying device 15 will be described.
As shown in FIG. 6, the conveying device 15 includes seven raking portions 43 for rearwardly raking the roots of the culms harvested by the reaping device 14, and two rows, the first row and the second row from the right side. The first intermediate conveying section 44 as one side conveying section that conveys the harvested grain culms rearward, and the harvested grain culms for two rows, the third row and the fourth row from the right side, to the first intermediate conveying section 44. The second intermediate conveying unit 45 as one side central conveying unit that conveys to the confluence point of the second intermediate conveying unit 45, the 1 third intermediate as the other side central conveying unit that conveys one row of harvested grain culms backward from the fifth row from the right side Conveying section 46, fourth intermediate conveying section 47 conveying harvested grain culms of two rows, 6th and 7th rows from the right side, to the confluence point with first intermediate conveying section 44, reaping 7 merging rows A supply/conveyor 48 (see FIG. 5) for conveying culms to the starting end of the threshing feed chain 9 is provided. The third intermediate conveying section 46 is configured to convey harvested grain culms to a junction with the fourth intermediate conveying section 47 .

As shown in FIGS. 6 and 9, the raking unit 43 is a rotary packer 43A (having an outer shape of approximately and an endless rotating belt 43B with protrusions positioned above the packer 43A. The six rake-in portions 43 except for the fifth rake-in portion 43 from the right end are configured to rake the harvested grain culms of two left and right stalks rearward while collecting them in two streaks each. The fifth raking part 43 from the right end is configured to rake backward one row of harvested grain culms of the fifth row from the right.

Packers 43A in six raking portions 43 (hereinafter referred to as two raking portions 43) excluding the fifth raking portion 43 from the right end (hereinafter referred to as one rake portion 43) They are provided in a state in which they are aligned in a direction and mesh with each other. Also, the packer 43A in the one-row raking portion 43 is arranged in the left-right direction and engaged with the fourth packer 43A in the two-row raking portion from the right end. All the packers 43A are arranged side by side at the same height, the five packers 43A from the right end to the fifth are in a state of meshing with each other, and the fifth packer 43A and the sixth packer 43A are separated. ing.

As shown in FIGS. 5, 7, and 9, the first intermediate conveying unit 44 is provided with a first nipping and conveying device 50 for nipping and conveying the grain base side portion of the harvested grain culm, and the grain harvested culm tip side. A first tip locking and conveying device 51 for stopping and conveying is provided. As shown in FIG. 5 , the first stock nipping and conveying device 50 includes an endless rotating chain 53 as a first endless rotating body wound over a plurality of sprockets 52 . The first tip locking conveying device 51 includes an endless rotating chain 56 with locking protrusions 55 wound over a plurality of sprockets 54 . The locking projection 55 is supported so as to be able to swing up and down, and locked and guided so that the standing posture is maintained in the transfer action area. The configuration of this locking projection 55 is the same in each of the following tip locking and conveying devices.

The second intermediate conveying unit 45 includes a second stem clamping and conveying device 57 that clamps and conveys the stem side portion of the harvested grain culm, and a second tip locking and conveying device 58 that locks and conveys the tip side of the harvested grain culm. and are provided. As shown in FIG. 5 , the second stock holding and conveying device 57 includes an endless rotating chain 60 as a second endless rotating body wound over a plurality of sprockets 59 . The second tip-locking conveying device 58 includes an endless rotating chain 63 with locking projections 62 wound over a plurality of sprockets 61 .

The third intermediate conveying unit 46 includes a third stem clamping and conveying device 64 that clamps and conveys the stem side of the harvested grain culm, and a third tip locking and conveying device 65 that locks and conveys the tip side of the harvested grain culm. and are provided. As shown in FIGS. 5 and 12, the third stock clamping and conveying device 64 has an endless rotating chain 67 wound over a plurality of sprockets 66 . The third tip-locking conveying device 65 includes an endless rotating chain 70 with locking projections 69 wound over a plurality of sprockets 68 .

The fourth intermediate conveying unit 47 includes a fourth stem clamping and conveying device 71 for clamping and conveying the stem side portion of the harvested grain culm, and a fourth tip locking and conveying device 72 for locking and conveying the tip side of the harvested grain culm. and are provided. The fourth stock clamping and conveying device 71 has an endless rotating chain 74 wound over a plurality of sprockets 73 . The fourth tip locking conveying device 72 has an endless rotating chain 77 with locking projections 76 wound over a plurality of sprockets 75 .

As shown in FIGS. 1 and 5, the supply conveying section 48 is conveyed by the first intermediate conveying section 44, the second intermediate conveying section 45, the third intermediate conveying section 46, and the fourth intermediate conveying section 47, and merges. A conveying device 78 for threshing depth that clamps and conveys seven rows of harvested grain culms toward the threshing feed chain 9, and reaps from the threshing depth conveying device 78 to the starting end of the threshing feed chain 9. A transfer supply device 79 for transferring the culm is provided. As shown in FIG. 5 , the threshing depth conveyor 78 and transfer feeder 79 both comprise an endless pivot chain 81 wound over a plurality of sprockets 80 . Although not shown, a nipping rail is provided facing the endless rotating chain 81, and the base of the harvested grain culm is nipped and conveyed by the endless rotating chain 81 and the nipping rail.

Although not shown, the threshing depth conveying device 78 is swingably supported so that the conveying end side moves in the culm length direction with the conveying starting end side as a fulcrum. By moving the conveying end side, the position of harvested grain culms inherited from the merging point is changed in the culm length direction (vertical direction), and the penetration depth into the threshing device 6 can be changed and adjusted.

[Regarding the junction of the first intermediate conveying section and the second intermediate conveying section]
As shown in FIGS. 15 and 21, the first stock pinching and conveying device 50 of the first intermediate conveying section 44 joins from the second stock pinching and conveying device 57 in the second intermediate conveying section 45 from the beginning of conveyance. A first clamping rail 82 is provided in a region extending over a portion so as to face the endless rotating chain 53 . The base of the harvested grain culm is clamped by the endless rotating chain 53 and the first clamping rail 82 and conveyed backward. As shown in FIG. 15, the second stock clamping and conveying device 57 is similarly provided with a second clamping rail 83 facing the endless rotating chain 60, and the endless rotating chain 60 and the second clamping rail 83 The base of the reaping grain culm is pinched and conveyed backward.

The grain culm conveying paths of the first stem pinching and conveying device 50 and the second stem pinching and conveying device 57 face each other, and in a state where the grain culm conveying paths intersect, the second stem pinching and conveying device 57 is moved. The harvested grain culms conveyed by the first stock base clamping and conveying device 50 are configured to join the conveying route.

The first stock clamping and conveying device 50 is provided with a first support frame 84 that supports the first clamping rail 82 with respect to the endless rotating chain 53 so as to be able to press and urge and retract. The second stock clamping and conveying device 57 is provided with a second support frame 85 that supports the second clamping rail 83 with respect to the endless rotating chain 60 so as to be pressurized and retractable. Each of the support frames 84 and 85 is formed by bending a plate into a substantially U shape, and extends along the corresponding endless rotating chains 53 and 60 . As shown in FIG. 22, a coil spring 86 is provided inside each of the support frames 84 and 85 for pressing and biasing the clamping rails 82 and 83 . Each of the support frames 84 and 85 is fixed to a support member 87 that is fixedly supported by the dividing grass frame 20 .

As shown in FIG. 21 , the first pinching rail 82 of the first root pinching and conveying device 50 has a pinching end position set at a point on the upper side in the conveying direction of the joining point of the grains. Further, on the downstream side of the conveying side of the first stock clamping and conveying device 50 from the clamping end position of the first clamping rail 82, an auxiliary conveying guide is provided at each of the upper portion of the route and the lower portion of the route with respect to the endless rotating chain 53. 88, 89 are provided.

As shown in FIGS. 15, 21 and 22, an upper auxiliary conveying guide 88 composed of a leaf spring is provided in a state of being positioned above the endless rotating chain 53 along the path. In addition, a lower auxiliary conveying guide 89 made of piano wire is provided at the lower side of the endless rotating chain 53 .

The upper auxiliary conveying guide 88 and the lower auxiliary conveying guide 89 have one end on the upper conveying side supported by the second support frame body 85 corresponding to the second stock clamping and conveying device 57, and the other end on the lower conveying side. It is extended in a cantilevered manner toward the culm transport path.

The grain culm nipping region by the first nipping rail 82 of the first stem nipping and conveying device 50 and the feeding action region by the upper auxiliary conveying guide 88 and the lower auxiliary conveying guide 89 partly overlap along the grain culm conveying direction. is doing. As a result, the first stem clamping and conveying device 50 can satisfactorily transport the harvested grain culms of two rows, the first row and the second row from the right side, and the second stem clamping and conveying device 57 transports them. The harvested culms to be harvested can be satisfactorily merged and conveyed rearward without the first clamping rail 82 interfering with the merging.

As shown in FIG. 21, a cantilever extending from the second support frame 85 of the second stock clamping and conveying device 57 along the conveying path after the harvested grain culms of the first stock clamping and conveying device 50 are joined. A rear pinch rail 90 is provided as installed. The base of the harvested grain culm is clamped by the endless rotating chain 53 and the rear clamping rail 90 and transported backward. In addition, similarly to the confluence point, an upper auxiliary conveying guide 91 composed of a leaf spring and a lower auxiliary conveying guide 92 composed of a piano wire are provided, and the joined harvested grain culms are used for threshing depth. It conveys so that it may be delivered to the conveying device 78 .

As shown in FIGS. 15 and 22, the first stock clamping and conveying device 50 is provided with a stock clamping support frame 93 made of a round pipe material and extending along the path of the endless rotating chain 53 . there is The stock clamping support frame 93 is provided with a back portion guide rail 94 that receives and supports the endless rotating chain 53 from the back in the clamping action area. Although not shown, the stem clamping support frame 93 has its front end supported by the right-end dividing frame 20 and its rear end supported by a branching transmission case 95 extending from the reaping support frame 16 . there is

As shown in FIGS. 15 and 22, in a state of being integrally connected from the longitudinal intermediate portion of the support frame 93 for holding the stock, the stock base slides in contact with the return path of the endless rotating chain 53 from the outer surface side. Side guide members 96 are provided. The stock base side guide member 96 is formed in a substantially strip-like shape, and both the front and rear sides thereof are tapered, and the contact portion with the endless rotating chain 53 is formed in a gentle circular arc shape. The stock base side guide member 96 slides and guides the return path of the endless rotating chain 53 so as to move away from the cabin 8 .

[First tip locking and conveying device]
The first ear locking/conveying device 51 is configured to convey the harvested grain culm to the left rear while locking the ear of the harvested grain culm by the locking projection 55 in the standing posture by rotating the endless rotating chain 56 . ing. A tip slide contact guide plate 97 is provided on the upper side of the first tip locking and conveying device 51 to receive and guide the tip portion of the reaping grain culms in sliding contact therewith.

The front half portion of the first tip locking and conveying device 51 carries out the tip-side locking and conveying of the harvested grain culms of two rows, the first row and the second row from the right side. From the middle part of the transport, the reaping grain culms transported by the second intermediate transport part 45 are held and transported in a merged state. Furthermore, in the latter half of the transportation, the grain harvested culms transported by the third intermediate conveying section 46 and the fourth intermediate conveying section 47 are joined together, and all the harvested grain culms for seven rows are joined. After that, the harvested grain culms for seven rows are locked and conveyed and guided toward the entrance of the threshing device 6 .

As described above, the first tip locking conveying device 51 has a long conveying path in the front-rear direction, and passes in front of the driving section 5 . Therefore, as shown in FIGS. 3, 6, 7, and 11, the first tip locking/conveying device 51 passes in front of the driving unit 5, bends toward the rear of the machine body, and extends toward the rear of the machine body.

The first head locking and conveying device 51 has a culm conveying path set on the left side and a return path not performing the conveying action set on the right side. Each of the transport route and the return route passes in front of the driving unit 5 and bends toward the rear of the fuselage to extend toward the rear of the fuselage.

As shown in FIGS. 11 and 22 , the first tip locking conveying device 51 is provided with a conveying guide rail 98 for slidingly guiding the endless rotating chain 56 . The transport guide rail 98 is supported at its front end by the dividing frame 20 and at its rear end by the laterally facing pivotal support portion 17 near the swing fulcrum. The endless rotating chain 56 is slidably guided by the guide rails 98 for transportation on the transportation path. At this time, the locking projection 55 is locked and guided by the standing guide member 99 so as to assume the standing posture. FIG. 7 shows the locus U of tip rotation of the locking projection 55. As shown in this figure, in the transport path, the locking projection 55 moves in the upright position to lock and guide the tip side. . As is clear from FIG. 7, the conveying path of the first tip locking conveying device 51 has a shape that bends rearward in the middle.

As shown in FIGS. 11 and 16, it is supported by the front end side and the rear end portion of the transportation guide rail 98, and extends along a path that passes in front of the driving section 5 and bends toward the rear of the machine body. In addition, a return path guide rail 100 is provided in a state of being positioned on the outer peripheral side (right side) of the endless rotating chain 56 on the return path. As shown in FIG. 22, the return route guide rail 100 is formed of a plate having a substantially L-shaped or substantially U-shaped cross-section so as to be able to guide the endless rotating chain 56 on the return route. . In the return path guide rail 100, four linearly formed divided rail bodies 100a are sequentially bent and integrally connected to form a curved path in a plan view. When passing through the return path, the locking projection 55 is laid down along the endless rotating chain 56 .

As shown in FIGS. 7 and 16 , the tip sliding contact guide plate 97 provided on the upper side of the first tip locking and conveying device 51 is arranged so as not to interfere with the cabin 8 of the operation part 5 regardless of the vertical movement of the reaping part 2 . In addition, the flat plate is bent into a corrugated shape so that the part where there is a possibility of contact is separated from the driving part 5. - 特許庁

Also in the second intermediate conveying section 45, the third intermediate conveying section 46, and the fourth intermediate conveying section 47, the tip sliding contact guide plates 101, 102, and 103 that receive and guide the tip side portion of the grain culm that is conveyed are in sliding contact. is provided.

[Configuration of tip guide at bend]
At a portion of the first tip locking/conveying device 51 corresponding to the backward bending portion, a portion above the locking action position Z of the harvested grain culm by the first tip locking/conveying device 51 is toward the driving unit 5 side. An upper guide rod 104 is provided as an upper tip guide portion that guides while pushing toward.

As shown in FIGS. 6 and 20, the upper guide rod 104 is formed by bending a round bar into a substantially U shape. The upper guide rod 104 is bolted to the support frame 105 of the second intermediate conveying section 45 in a state where the upper end of the upper guide rod 104 is crushed into a flat surface. As shown in FIG. 20 , the vertically extending portion of the upper guide rod 104 on the upper side of the conveying direction is inserted through the insertion hole 106 formed in the tip sliding contact guide plate 101 of the second intermediate conveying portion 45 . is provided.

As shown in FIGS. 7 and 20, the fourth intermediate conveying section 47 is provided with a confluence tip guide section that guides the tip side portion of the harvested culm to be conveyed to join the conveying path of the first intermediate conveying section 44. A merging guide rod 107 is provided. The merging guide rod 107 is formed by bending a round bar into a substantially S shape. The end of the merging guide rod 107 on the upper transport side is bolted to the support frame 108 of the third intermediate transport section 46 .

A support bracket 109 is fixedly extended from the intermediate extension of the merging guide rod 107 , and the extension side end of the support bracket 109 is bolted to the tip sliding contact guide plate 102 of the third intermediate conveying section 46 . Further, the end portion of the upper guide rod 104 on the downstream side of transportation is bolted to the support bracket 109 . The tip sliding contact guide plate 102 is supported by the support frame 108 of the third intermediate conveying section 46 . Accordingly, the upper guide rod 104 is supported across the support frame 105 of the second intermediate transport section 45 and the support frame 108 of the third intermediate transport section 46. As shown in FIG.

A lower guide rod 110 is provided as a lower tip guide portion that guides the harvested grain culm by pushing the portion below the locking action position Z of the first tip locking and conveying device 51 toward the driving portion 5 side. It is The lower guide rod 110 is formed by bending a round bar into a substantially L shape. The lower guide rod 110 is bolted to the support frame 105 of the second intermediate conveying section 45 in a state where the upper end of the lower guide rod 110 is flattened.

The end of the lower guide rod 110 on the downstream side of transportation is integrally connected to the end of the merging guide rod 107 on the downstream side of transportation. With this configuration, the grain culms to be conveyed can be smoothly merged, and moreover, compared with the case where the guide rods 107 and 110 are provided in a cantilevered free state, bending deformation and the like are less likely to occur, and durability is improved. can be excellent in

[Third Intermediate Conveyor]
As shown in FIGS. 6, 7, 9, and 14, the third stalk nipping and conveying device 64 in the third intermediate conveying section 46 nips the stalks of harvested grain culms for one row, which is the fifth row from the right side. , and is conveyed along the longitudinal direction of the machine body, and merges with the middle portion of the conveying route of the fourth stock holding and conveying device 71 .

The fourth stalk nipping and conveying device 71 nips the stalks of harvested grain culms for two rows, the sixth row and the seventh row from the right side, and conveys them along the right rear oblique direction, It is configured to be delivered to the starting end of the conveying device 78 for scissors. The fourth ear locking and conveying device 72 locks the harvested grain culms of two rows, the sixth row and the seventh row from the right side, on the tip side of the harvested grain culms, and conveys them along the right rear oblique direction. It is configured to merge with the halfway portion of the transfer of the tip locking transfer device 51 .

The third stock pinching and conveying device 64 is configured to merge the culms to be conveyed in the middle of the oblique transfer path for conveying along the right rear oblique direction in the fourth stock pinching and conveying device 71 . The third ear locking and conveying device 65 is locked to the ear side of the harvested grain culm of the fifth row from the right side, conveys the harvested grain culm along the front-rear direction of the machine body, and moves to the fourth ear. It is configured to merge in the middle of an oblique transfer path that is conveyed along the right rear oblique direction in the locking transfer device 72 .

[Transmission structure]
Next, the transmission structure for the reaping part 2 will be described.
As shown in FIG. 5, the power after the output of the engine E (see FIG. 1) mounted on the traveling body 1 is changed by a transmission (not shown) is provided inside the pivotal support portion 17 of the reaping support frame 16. It is transmitted to the lateral transmission shaft 111 . Power is transmitted from the horizontal power transmission shaft 111 through the front-rear power transmission shaft 112 provided inside the reaping support frame 16 .

The above-described power after shifting is transmitted from the front-rear oriented reaping transmission shaft 112 to the lateral input shaft 113 provided inside the lower side lateral frame 19 . Power is transmitted to the reaping device 14 via branching portions 114 provided at both end portions of the input shaft 113 .

The power is transmitted from a branch portion 115 provided on the left side of the input shaft 113 to a vertical transmission shaft 116 . The power is branched from the middle of the vertical transmission shaft 116 and transmitted to the fourth intermediate conveying portion 47 , and the power is transmitted from the fourth intermediate conveying portion 47 to the raking portion 43 on the leftmost side. Power is transmitted to the adjacent raking portion 43 (sixth from the right end) by the meshing of the packers 43A.

A lateral lifting drive shaft 33 is provided between the upper parts of the lifting device 13 along the upper lateral frame 26 to cover the entire width in the left-right direction. The power from the vertical transmission shaft 116 is shifted by the gear transmission mechanism 118 and then transmitted to the lifting drive shaft 33 . Power is transmitted from the lifting drive shaft 33 to the seven lifting devices 13 .

On the other hand, from the middle of the transmission of the reaping transmission shaft 112 extending in the front-rear direction, the five raking units 43 located on the right side, the first stock clamping and conveying device 50, the second intermediate conveying unit 45, the third intermediate conveying unit 46, Power is transmitted to the supply transport unit 48 . Power is transmitted from the horizontal transmission shaft 111 to the first tip locking and conveying device 51 .

A first branch transmission mechanism 119 that transmits the power branched from the reaping transmission shaft 112 to the second intermediate conveying section 45 and the third intermediate conveying section 46 is provided in the middle of the reaping support frame 16 .

The first branch transmission mechanism 119 will be explained.
As shown in FIGS. 5 and 12, a first branch portion 121 having a bevel gear mechanism 120 is provided in the middle of the transmission of the reaping transmission shaft 112 . Power is branched and transmitted from the reaping transmission shaft 112 to the first branch transmission shaft 122 at the first branch portion 121 . The first branch transmission shaft 122 branches off power from the reaping transmission shaft 112 via the bevel gear mechanism 120 and extends obliquely upward and forward. The first branch transmission shaft 122 is supported by a cylindrical first branch case 123 integrally formed with the reaping support frame 16 . The first branch transmission shaft 122 is configured to directly drive the drive sprocket 66 of the third stock pinching and conveying device 64 in the third intermediate conveying section 46 and the drive sprocket 68 of the third tip locking and conveying device 65. ing. Power is transmitted from the third stock holding and conveying device 64 to the fifth raking section 43 from the right end.

As shown in FIGS. 5 and 13, power is branched from the middle portion of the first branch transmission shaft 122 to the second branch transmission shaft 124 . The second branch transmission shaft 124 branches off power from the first branch transmission shaft 122 via the bevel gear mechanism 125 and extends in the lateral direction. The second branch transmission shaft 124 is supported by a cylindrical second branch case 126 integrally formed with the first branch case 123 (see FIG. 9).

A third branch transmission shaft 128 to which power is transmitted from the second branch transmission shaft 124 via a bevel gear mechanism 127 is provided. The third branch transmission shaft 128 extends obliquely forward. The third branch transmission shaft 128 is supported by a cylindrical third branch case 129 integrally formed with the second branch case 126 .

The third branch transmission shaft 128 is configured to directly drive the drive sprocket 59 of the second stock clamping and conveying device 57 and the drive sprocket 61 of the second tip locking and conveying device 58 . Power is transmitted from the second stock holding and conveying device 57 to the fourth raking portion 43 from the right end. Power is transmitted to the adjacent raking portion 43 (the third from the right end) by the meshing of the packers 43A.

Therefore, the power transmitted to the third intermediate conveying portion 46 via the first branch portion 121 is transmitted to the fifth raking portion 43 from the right end, and is transmitted to the second intermediate conveying portion 45 via the first branch portion 121. is transmitted to the fourth raking portion 43 from the right end. The packer 43A of the fifth rake portion 43 from the right end and the packer 43A of the fourth rake portion 43 from the right end are interlocked and rotatably engaged.

A second branch transmission mechanism 130 is provided to transmit the power branched from a portion of the reaping transmission shaft 112 on the upper side of the transmission than the portion where the first branch transmission mechanism 119 is provided to the first stock clamping and conveying device 50. .

The second branch transmission mechanism 130 will be explained.
As shown in FIGS. 5 and 10, a second branch portion 131 is provided at a location on the upper side of the transmission of the reaping transmission shaft 112 from the location where the first branch portion 121 is provided. Power is branched from the reaping transmission shaft 112 to the fourth branch transmission shaft 132 and the fifth branch transmission shaft 133 at the second branch portion 131 . The fourth branch transmission shaft 132 is supported by the branch transmission case 140, and extends obliquely upward and forward with power branched from the reaping transmission shaft 112 via the bevel gear mechanism 134. As shown in FIG. The fifth branch transmission shaft 133 branches off power from the reaping transmission shaft 112 via the bevel gear mechanism 135 and extends obliquely upward to the left front.

Power is transmitted from the fourth branch transmission shaft 132 to the first stock clamping and conveying device 50 in the first intermediate conveying section 44 , and the power of the first stock clamping and conveying device 50 is transmitted to the raking section 43 at the right end. The packer 43A of the rightmost raking portion 43 and the packer 43A of the second raking portion 43 from the right end are interlocked and rotatably engaged, and power is transmitted to the second raking portion 43. . Power is transmitted from the fifth branch transmission shaft 133 to the threshing depth conveying device 78 via the bevel gear mechanism 136 .

[Another embodiment]
(1) In the above embodiment, the upper guide rod 104 as the upper tip guide portion is configured to be supported across the support frame 105 of the second intermediate conveying portion 45 and the support frame 108 of the third intermediate conveying portion 46. Alternatively, the upper guide rod 104 may be supported only by the support frame 105 of the second intermediate conveying section 45, or may be supported only by the supporting frame 108 of the third intermediate conveying section 46. may be configured. Furthermore, it may be supported by another support member different from the support frames 105 and 108 .

(2) In the above embodiment, the configuration includes the second intermediate transportation section 45 and the third intermediate transportation section 46 as the central transportation section. Only one of the units 46 may be provided.

(3) In the above embodiment, the lower guide rod 110 as the lower tip guide member is supported by the support frame 105 , but may be supported by another support member.

(4) In the above embodiment, the harvesting unit 2 harvests 7 planted grain culms. It is good also as a structure which can reap the planted grain culm of the number of rows more than eight rows.

INDUSTRIAL APPLICABILITY The present invention can be applied to a combine harvester provided with a reaping portion capable of reaping a plurality of planted grain culms at the front portion of the traveling machine body.

2 Harvesting Unit 5 Operating Unit 12 Weed Dividing Tool 13 Grain Raising Device 14 Harvesting Device 15 Conveying Device 44 First Intermediate Conveying Section (One Side Conveying Section)
45 second intermediate conveying section (one side central conveying section)
46 third intermediate conveying section (other side central conveying section)
50 First stock clamping and conveying device (nipping and conveying device)
51 First tip locking conveying device (tip locking conveying device)
104 upper tip guide portion 105 one side support frame 107 merge tip guide portion 108 other side support frame 110 lower tip guide portion Q1 to Q7 culm introduction path

Claims (5)

A reaping unit provided in the front part of the machine body for reaping planted grain culms, and an operating part located behind the reaping part and on one side in the left-right direction of the machine body,
A plurality of weed dividing tools for partitioning and forming a plurality of grain culm introduction paths, and a plurality of grain culms provided corresponding to each of all the grain culm introduction paths and causing planting grain culms in the harvesting part. A lifting device, a harvesting device that cuts a plurality of planted grain culms introduced into all the grain culm introduction paths, and a conveying device that merges the harvested grain culms in the left-right direction and conveys them backward. a device and
The conveying device is provided with a one-side conveying portion that extends toward the rear of the fuselage by bending toward the rear of the fuselage while passing in front of the driving portion from one end of the reaper in the lateral direction of the fuselage,
The one-side conveying unit is provided with a stock base pinching and conveying device that pinches and conveys the base side portion of the harvested grain culm, and a tip locking conveying device that holds and conveys the tip side of the harvested grain culm,
an upper tip guide portion that guides a portion of the harvested grain culm above the locking action position of the tip locking and conveying device in the bent portion of the one-side conveying portion while pushing it toward the driving portion side;
a lower tip guide portion that guides a portion of the harvested grain culm below the locking action position of the tip locking and conveying device in the bent portion of the one-side conveying portion while pushing it toward the driving portion side; , combine harvesters. a central conveying section for conveying harvested grain culms in a row positioned on the center side in the left-right direction of the machine body among the plurality of rows so as to join the one-side conveying portion;
The combine according to claim 1, wherein the upper tip guide portion is supported by the support frame of the central transport portion. The central conveying portion is provided with a one-side central conveying portion positioned on one side in the left-right direction of the machine body and a other-side central conveying portion positioned on the other side in the left-right direction of the machine body,
After the grain harvested culms conveyed by the one-side central conveying portion are joined to the one-side conveying portion, the grain harvested culms conveyed by the other-side central conveying portion are joined to the one-side conveying portion. configured to
The support frame includes a one-side support frame for the one-side central transport section and the other-side support frame for the other-side center transport section,
The combine according to claim 2, wherein the upper tip guide portion is supported across the one side support frame and the other side support frame. The combine according to claim 2 or 3 , wherein the lower tip guide portion is supported by the support frame. a confluence tip guide section for holding and guiding the harvested grain culms conveyed by the other-side central conveying section so as to join the one-side conveying section;
The combine according to claim 3 , wherein the guide-direction downstream end of the lower tip guide portion and the guide-direction downstream end of the merging tip guide portion are connected.

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