JP3412816B2 - Combine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a sliding combiner in which a mowing unit can be switched between left and right positions in a small combine. [0002] The applicant of the present invention has developed a pre-processing mechanism of a cutting section in order to prevent uncutted culms in the vicinity of the outer end of a crawler from falling down due to mud in work in a soft field. An application has been filed for a combine that slides left and right, and in accordance with that, rotates the grain culm conveying device in the reaping unit left and right to switch between the inside and outside positions. Among the slide configurations of the cutting unit, the slide configuration of the pre-processing mechanism is such that a vertical vertical transmission shaft extends forward and downward so as to be rotatable left and right from the cutting input shaft, and the distal end of the vertical transmission shaft is connected to the horizontal transmission shaft. And a link mechanism forming a parallel link with the vertical transmission shaft is connected to the horizontal transmission shaft from the cutting input shaft, and a pre-processing mechanism is supported by the horizontal transmission shaft. Then, the horizontal transmission shaft and the pre-processing mechanism slide integrally left and right by the left and right rotation of the vertical transmission shaft. [0003] However, a traveling transmission case and a front end of a crawler are disposed immediately below the harvester of the combine. In the above prior art,
The vertical support rod is swung right and left immediately before the transmission case or the like, and has a curved shape avoiding the transmission case or the like so as not to interfere with the transmission case or the like. But,
In order to respond to the recent demand for downsizing of the reaping section, it is still necessary to reduce the front-rear length between the transmission case and the front end of the reaping section. And interference with the front end of the crawler. Since the vertical support rod swings, there is a problem that an interference site is generated in the swing range. [0004] The present invention uses the following means to solve the above-mentioned problems. A pre-processing mechanism such as a raising device and a cutting blade 36 in the harvesting unit K of the combine is provided with an up-down rotation mechanism that can move up and down, and is independently rotated left and right to be able to switch between left and right positions. In the configuration, the horizontal transmission case 19 of the reaping unit K is pivotally supported by the slide arm unit so as to be rotatable left and right with respect to the side of the vertical support rod 8 which is configured to be unable to rotate left and right. The pivoting center of the slide arm portion is disposed on the side, the pivotal support portion at the front end of the slide arm portion is provided on the side of the lateral transmission case 19, and the swing transmission case 11 is moved from the reaping input case 1 on the chassis 43 side. Project forward and swing
Bevel gear case 13 fixed to the front end of transmission case 11
The bevel gear case 13 is located on the side of the lateral transmission case 19.
It is rotatably fitted to the middle of the upper right transmission case 14
And a transmission case 16 at the lower end of the upper right transmission case 14.
The gears in the transmission case 16 are fixed and the horizontal
Inside the lower right transmission case 17 fixed to the transmission case 19
The power is transmitted to the lower transmission shaft 18 of the
Extends downward to the lateral transmission shaft 20 in the lateral transmission case 19.
Power is transmitted, and the cutting blade and the raking are driven from the lateral transmission shaft 20.
To drive the cutting blade / scraping transmission shaft 42 to be driven . The problems and constitutions to be solved by the present invention are as described above. Next, embodiments of the present invention shown in the accompanying drawings will be described. FIG. 1 is a front view of a cutting unit slide-type combine, FIG. 2 is a side view of the cutting unit, FIG. 3 is a plan view showing a lower support structure of the cutting unit, and FIG. 4 is a plane showing a slide structure of a pre-processing mechanism in the cutting unit. 5 and FIG. 5 are partial plan views showing a rotation and sliding structure of the swing transmission case 11, FIG. 6 is a plan view showing a drive system of a pre-processing mechanism in the cutting section, and FIG. 7 is a pre-processing mechanism in the cutting section slide. FIG. 8 is a schematic front view showing the same phase rotation of the shaft and the culm transport mechanism, FIG. 8 is a front view showing a drive system of the raising device, FIG. 9 is an internal plan view of the transmission case, FIG. FIG. 12 is a plan view showing the inside of the same gear transmission, FIG. 12 is a plan view of a grain culm transport mechanism, and FIG. 13 is a side view of the same. The overall structure of the combine will be described with reference to FIGS. The combine is a left and right crawler 44L
The chassis 4 is mounted on a crawler running device supporting the 44R.
3 is mounted, an engine (not shown) is mounted on the front right side of the chassis 43, and a transmission case M is further disposed in front of the chassis 43, and left and right crawlers 44L and 44R are mounted on the transmission case M. Drive wheel axle 45
Is suspended. On the upper part of the chassis 43, on the left side in the running direction is mounted a threshing sorter D in which a feed chain 46 and a handling cylinder 47 are installed, and on the right side, a paddy tank 49 is disposed above, and threshing is performed. Paddy is stored from the sorting unit D on the fry conveyor 48, and a padding section for paddy is provided below the paddy pad. The paddy in the paddy tank 49 can be stored in the paddy pad placed. The front portion of the chassis 43 has a right side portion extending forward, and a front column 50 and a seat 51 are provided above the front portion.
An operation section S is provided on which a seat and the like also serving as an engine room, which is disposed at an upper portion thereof, is mounted. And the like. A reaping section K is supported on the left side of the operation section S, that is, in front of the left side portion of the chassis 43. Hereinafter, the configuration of the mowing unit K will be described in detail with reference to FIGS. A reaping input case 1 is disposed laterally above the front part of the chassis 43, and a reaping input shaft 3 that projects the reaping input pulley 2 to the right as shown in FIG. It is pivoted. The reaping input shaft 3 projects to the left side, as shown in FIG.
The bevel gear meshes with a grain stalk transport drive shaft 5 which is inserted into the grain stalk transport drive case 4 as shown in FIG. The grain stalk transport mechanism will be described with reference to FIGS. The upper end of the grain culm transport drive shaft 5 supports the ear tip transport device 6 and the lower end thereof supports the vertical transport device 7 so as to be rotatable left and right, and the driving sprocket of each grain culm transport device 6. Is attached, and each grain stalk transport device 6.
7 is transported and driven. Both grain culm transport devices 6 and 7 are integrally connected, and are configured to freely rotate left and right with respect to the grain culm transport drive case 4 around the grain culm transport shaft 5 as a rotation fulcrum. I have. These grain culm transporting devices 6 and 7 are for transporting the tip of the grain culm inherited from the pretreatment mechanism described later, while the tip transporting device 6 holds the root portion of the cereal stem backward while the vertical transporting device 7 holds the same. At
The vertical conveying device 7 gradually raises the root portion, makes the cereal stem substantially horizontal at the rear end portion, and inherits the culm in the feed chain 46 of the threshing and sorting unit D. Next, the support structure of the pre-processing mechanism of the cutting unit K will be described with reference to FIGS. The pre-processing mechanism is a part in front of the reaping unit K that scrapes uncut culms into the reaping unit K, cuts the culms, and conveys the culms to the culm conveying devices 6 and 7. It comprises a device (raising case 27), a scraping belt 29, a scraping wheel 31, a cutting blade 36 and the like. These pre-processing mechanisms are integrally supported by a lateral transmission case 19 disposed laterally below the mowing part K, and the lateral transmission case 19 includes a parallel lateral support rod. 9, a slide arm portion 10L forming a parallel link interposed at the left end and the right end.
・ They are slidably connected to each other via 10R. The horizontal support rod 9 is fixed to the tip of the vertical support rod 8 projecting forward from the middle of the mowing input case 1, that is, fixed to the mowing input case 1. The horizontal transmission case 19 and the pre-processing mechanism are supported so as to integrally slide left and right with respect to the provided vertical support rod 8 and horizontal support rod 9. The vertical support rod 8 has a curved shape in a side view as shown in FIG. 2 (it can be bent because no transmission shaft is provided inside) and is disposed immediately below it. Interference with the mission case M is avoided. Furthermore, since both the vertical support rod 8 and the horizontal support rod 9 are arranged in a fixed manner,
In the left and right slide of the reaper K, the transmission case M
There is no contact between the crawlers 44L and 44R with the front ends. With such a configuration, the front-rear distance between the crawler front end and the cutting unit can be reduced, and a compact combiner having a short front-rear length of the cutting unit can be configured. [0011] Parallel link slide arm 10L-1
The configuration of 0R will be described in detail. As shown in FIG. 4 and the like, the rear ends of the left and right slide arms 10L and 10R
The left and right ends of the horizontal transmission case 19 are pivotally supported by link brackets 23L and 23R fixed to the left and right ends of the lateral transmission case 19. Two left and right locking holes are drilled at the tip of the left slide arm 10L, while a fitting hole for fitting the release lever 24 is drilled in the left link bracket 23L. Then, the release arm 24 is inserted into one of the two left and right locking holes at the tip of the left slide arm 10L through the insertion hole, whereby the slide arm 10L.
OR is fixed to two positions on the left and right. Also, the release lever 2
When the user rotates the release lever 4, the release lever 24 naturally comes out of the locking hole of the left slide arm portion 10L, and the slide arm portions 10L and 10R become rotatable and can slide to the other position. The slide arm 10 which is a parallel link
The rotation amount and the rotation locus between the left and right fixed positions of L · 10R are
As shown in FIG. 7, in the left and right slide, the rotation trajectory X of the pre-processing mechanism and the rotation trajectory Y of the front end of the grain culm transport mechanisms 6 and 7 are shown.
Are set to be parallel and have the same amount of rotation. Therefore, it becomes possible to interlock the pretreatment mechanism and the grain stalk transport mechanism, and if the pretreatment mechanism and the grain stalk transport apparatus are linked,
If one slides, the other will slide in conjunction. 2 or 1 above a right-side scraping case 30R, which is a part of the pre-processing mechanism.
As shown in FIG. 3, an interlocking guide rod 37 having an arc shape in a side view is erected, and a guide member 38 is arranged on the interlocking guide rod 37 so as to be slidable up and down. The rear end of the interlocking rod 39 is slidably fitted into the cylindrical portion 39a at the tip end of the interlocking rod 39 via the cushioning material 38a. It is slidably fitted in a cylindrical body 40 fixed to the tip of a rear interlocking rod 41 that is extended. Thus, when the pre-processing mechanism is slid left and right, the cereal culm conveying devices 6 and 7 are also slid left and right in conjunction therewith. In addition, regarding the grain stalk transport device, the grain stalk transport drive case 4 is pivotally supported on the reaping input case 1 so that the spike transport device 6 and the vertical transport device 7 can be rotated. The handling depth must be adjusted by vertically turning together. This vertical rotation is performed at each slide position by the interlocking rod 39.
The guide member 38 at the tip is allowed to move by sliding up and down on the interlocking guide rod 37. With the above configuration, the sliding operation of the mowing unit is performed by the slide arm 10L, which is a parallel link.
When the fixing of the 10R is released by rotating the release lever 24 and the pre-processing mechanism is rotated left or right, the grain culm transport is performed by the coupling mechanism between the pre-processing mechanism and the grain culm transport mechanism. The mechanism also rotates integrally in the same direction, and when the mechanism reaches the fixed position, the release lever 24 is fixed, and the pretreatment mechanism and the grain culm transport mechanism are fixed at the position. The structure of the pre-processing mechanism will be described. Weeding rods 25L, 25R, 25M extend forward from the left end, right end, and center of the lateral transmission case 19, and at the front end of each weeding rod 25L, 25R, 25M, a weeding plate 26L,
26R and 26M are fixed. Left and right weeding rod 25L ・ 2
In 5R, raised case supporting rods 25a are extended immediately behind the weeding plates 26L and 26R, and the rear surfaces of the raised cases 27L and 27R are fixed to the raised case support rods 25a and 25a, respectively. The left and right weeding plates 26L and 26R are respectively disposed at the outer ends of the case 27L and 27R when viewed from the front, and a central weeding plate 26M is disposed between the left and right raised cases 27L and 27R. It is. Raised chains 28 each having a lug are wound around the raised cases 27L and 27R.
Is conveyed and driven to vertically raise the culm weeded by the weeding plates 26L, 26R, 26M, and the case 27
The culm is raked between L and 27R. Ragged scraping belts 29L and 29R are supported from the lower rear ends of both raising cases 27L and 27R. The rear portions thereof are supported on star wheel-shaped left and right scraping wheels 31L and 31R. In addition, both rake belts 29L and 29R are rake cases 30L and 30R, respectively.
The upper ends are covered, and the front ends of both scraping cases 30L, 30R are supported via brackets on raising case supporting rods 25a, 25a projecting from the left and right weeding rods 25L, 25R. The rear portion of the rake case 30R and the rotary drive shaft 32R of the right rake wheel 31R are supported by a later-described cutting blade and rake drive case 33 protruding from the lateral transmission case 19, and the rear portion of the left rake case 30L. The rotation shaft 32L of the left scraping wheel 31L is supported by a support rod 34 protruding from the transmission case 21 to be described later.
The left and right scraping belts 29L and 29R and the scraping wheels 31L and 31R are transported and driven so that the two right and left grain culms are collected at the central portion and transported rearward. A cutting blade 36 is provided between the left and right weeding rods 25L and 25R below the scraping wheels 31L and 31R.
Is laid horizontally. The cutting blade 36 slidably drives the driving blade 36a on the fixed receiving blade 36b, and the scraping wheel 31L.
The structure is such that the root of the grain stalk that has been scraped rearward at 31R is cut off. As shown in FIG. 6 or FIG. 7, the rear ends of the merging portions of the left and right scraping belts 29L and 29R and the scraping wheels 31L and 31R are located at the front ends of the ear tip transfer device 6 and the vertical transfer device 7 of the grain stem transfer device. The guide rods 35, 35,...
Is a scraping belt 29L / 29R and a scraping wheel 31L /
31R guides the stalks to be raked smoothly to the central part so as to be collected at the center, and furthermore, the head-end transport device 6 and the vertical transport device 7
, And the tip side of the grain culm is passed to the tip conveying device 6 and the root side is passed to the vertical conveying device 7. And, even with the left and right slide, the above-described configuration holds the left and right positional relationship between the pretreatment mechanism and the cereal culm transport mechanism, and does not hinder the transfer of cereal culm from the pretreatment mechanism to the cereal culm transport mechanism. It is. Next, the drive system of the pre-processing mechanism is shown in FIG.
This will be described with reference to FIGS. A swing transmission case 11 substantially in the front-rear direction in plan view is provided at the upper end of the cutting input case 1 in the middle.
The pivoting transmission case 11 is rotatable left and right with a pivot point to the reaping input case 1 as a fulcrum. The swing transmission case 11 has a slide receiving case 11b formed in the middle thereof, and a slidable front sliding case 11a projecting forward from the sliding receiving case 11b. A rear portion is slidably supported in the slide receiving case 11b. Further, the front sliding case 11a
Inside, the front portion of the swing transmission shaft 12 is supported so as not to slide back and forth, and the rear portion of the swing transmission shaft 12 projecting rearward from the front sliding case 11a is provided with a swing transmission shaft. The case 11 is supported so as to be slidable back and forth in the case 11. The rear end of the oscillating transmission shaft 12 is meshed with a bevel gear shaft 3a branched from an intermediate portion of the cutting input shaft 3, and the oscillating transmission shaft 12 slides with respect to the rear bevel gear 12b. It is movably fitted, and by sliding of the swing transmission shaft 12,
Gear engagement with the bevel gear shaft 3a is maintained. On the other hand, a lateral transmission shaft 20 is rotatably supported in a lateral transmission case 19 for supporting the above-mentioned pre-processing mechanism, and is engaged with a bevel gear from the left end thereof to raise the left upward case 27L. A left-raising transmission shaft 22 for driving the chain 28 is supported by the left-raising transmission case 21 so as to project therefrom, and the upper end is left-raised and meshes with the upper sprocket shaft 27a of the case 27L with a bevel gear. . And
The right end is pivotally supported in a lower right transmission case 17 which is vertically disposed below a transmission case 16 disposed in the vicinity of the upper and lower center of the right end of the cutting part K as viewed in FIG. The lower end of the lower right transmission shaft 18 is in mesh with the bevel gear. The upper end of the lower right transmission shaft 18 is provided in the upper right transmission case 14 in the transmission case 16 by gear engagement as shown in FIGS. 9 and 10, or by chain transmission as shown in FIG. Upper right transmission shaft 15 that is supported
It is transmitted to. Explaining the transmission structure of the gear meshing, a gear 18a is attached to the upper end of the lower right transmission shaft 18, and the lower end of the upper right transmission shaft 15 is attached via an intermediate gear 16a rotatably supported in the transmission case 16. Gear 15
a. In the chain transmission, a sprocket 18a 'is attached to the upper end of the lower right transmission shaft 18, a sprocket 15a' is attached to the lower end of the upper right transmission shaft 15, and a chain 16b is wound between the two sprockets. In this manner, the upper end of the upper right transmission shaft 15 transmitted from the lower right transmission shaft 18 is meshed with the upper sprocket shaft 27a of the right-raising case 27R by a bevel gear. A bevel gear case 13, which is an input case of a pre-processing mechanism, is fixedly mounted at the end of the front swing case 11a. A rocking transmission shaft 12 protruding forward from the front rocking case 11a is inserted therein, and the tip thereof becomes a bevel gear 12a. It meshes with a bevel gear 15 b provided around the transmission shaft 15. That is, the driving force of the mowing input shaft 3 drives the upper right transmission shaft 15 via the oscillating transmission shaft 12 and directly raises the right to directly raise the chain 27 of the case 27R. Power is transmitted from the transmission shaft 15 to the lower right transmission shaft 18 via the transmission case 16,
The lateral transmission shaft 20 is driven, and further left-lifted, via the transmission shaft 22, to drive the raising chain 28 of the left-hand raising case 27L. As shown in FIG. 6, a cutting blade / scraping transmission shaft 42 meshes with a bevel gear from a middle portion on the right side of the horizontal transmission shaft 20.
2 protruding forward and fixed to the lateral transmission case 19.
It is supported in the illustrated cutting blade / scraping transmission case 33,
The front end thereof is connected to the driving blade 36a of the cutting blade 36 to slide and drive the driving blade 36a. The driving blade 36a is worm-meshed in the middle of the driving blade 36a to rotate the driving shaft 32R of the right scraping wheel 31R and the right scraping belt 29R. It is transmitted to. The left rake wheel 31L and the rotation shaft 32L of the rake belt 29L are
Scraping wheel 31L for driven scraping wheel 31R
, And is driven to rotate. That is, the cutting blade 36, the squeezing belt 29, and the squeezing wheel 31 can be driven by one cutting blade / scraping transmission shaft 42, and the configuration of the slicing blade / scraping transmission case 33 is simplified. ing. The reason for the projecting from the position closer to the right side is due to transportation reasons. However, as the harvesting progresses, the combine tank 4
Since the weight is applied to the right part on which 9 is mounted, it is better to simplify in this way and to reduce the weight of the cutting blade / screw drive transmission case 33 as much as possible. Of these drive systems, the left-raising transmission case 21, the lower right transmission case 17, the transmission case 16, the upper right transmission case 14, and the cutting blade / scraping transmission case 33 are fixed to the horizontal transmission case 19. And slides together with the left and right slide of the pre-processing mechanism. At this time, the swing transmission case 11 rotates left and right as shown in FIG. 4. However, since the swing transmission case 11 has a long front-rear length, the left and right slide arms 10L and 10R which are parallel links are left and right. The stroke amount is larger than the stroke amount by the slide, and accordingly, the displacement amount before and after is also larger. This longitudinal displacement is
The right-left rotation is impossible unless the front-rear displacement amount due to the rotation of the left-right slide arms 10L and 10R is reduced to the same amount. Therefore, when sliding to the left, as shown in FIG. 5, the swing transmission shaft 12 and the front sliding case 11a are slidable as described above so as to slide rearward with respect to the swing transmission case 11. It is. With the above construction, the pre-processing mechanism of the mowing part K is slidably supported by the horizontal support rod 9 via parallel links (10L and 10R). The vertical support rod 9 and the vertical support rod 8 are fixedly extended from the mowing input shaft 3 and are not a transmission mechanism. Therefore, the vertical support rod 8 does not swing and bends in a curved shape. You can also use the mission case M or crawler (4
4) Even if the distance from the front end is small, interference can be avoided. Furthermore, since the transmission shaft (12) is connected to the input case (1) of the pre-processing mechanism so as to swing and expand and contract from the reaping input shaft 3, even if the reaping unit K slides, the transmission to the pre-processing mechanism. The transmission can be maintained. The present invention is configured as described above.
The following effects are obtained. With this configuration, a mechanism that transmits an appropriate driving force to the preprocessing mechanism can be easily configured even when the mowing unit is slid left and right.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a sliding type combine harvester. FIG. 2 is a side view of the reaper. FIG. 3 is a plan view showing a lower support structure of the reaper. FIG. 4 is a plan view showing a slide structure of a pre-processing mechanism in the reaper. FIG. 5 is a partial plan view showing a rotation and sliding structure of the swing transmission case 11. FIG. 6 is a plan view showing a driving system of a pre-processing mechanism in the reaper. FIG. 7 is a schematic plan view showing the same-phase rotation of a pretreatment mechanism and a grain culm transport mechanism in a cutting unit slide. FIG. 8 is a front view showing a drive system of the raising device. FIG. 9 is an internal plan view of the transmission case. FIG. 10 is an internal side view of the same. FIG. 11 is an internal plan view when the chain transmission is used. FIG. 12 is a plan view of a grain culm transport mechanism. FIG. 13 is a side view of the same. [Description of Signs] K Cutting unit M Transmission case 1 Cutting input case 3 Cutting input shaft 4 Grain culm transfer drive case 5 Grain culm transfer drive shaft 6 Ear transfer device 7 Vertical transfer device 8 Vertical support rod 9 Horizontal support rod 10 Slide arm Part 11 Swing transmission case 11a Front sliding case 11b Sliding receiving case 12 Swing transmission shaft 13 Bevel gear case 14 Right upper transmission case 15 Right upper transmission shaft 16 Transmission case 17 Right lower transmission case 18 Right lower transmission shaft 19 Side Power transmission case 20 Horizontal power transmission shaft 21 Left raised transmission case 22 Left raised transmission shaft 26 Weeding plate 27 Raised case 28 Raised chain 29 Raised belt 30 Raised wheel 31 Raised case 33 Cutting blade / Raised transmission case 36 Cutting Blade

Claims (1)

(57) [Claim 1] An up-and-down rotation mechanism that allows a raising device and a pre-processing mechanism such as a cutting blade 36 in a reaping unit K of a combine to be able to move up and down is provided. In the configuration in which the left and right positions can be switched, the left and right positions can be switched.
The horizontal transmission case 19 of the cutting unit K is provided by the slide arm.
The center of rotation of the slide arm is disposed on the side of the vertical support rod 8, and the pivot on the front end of the slide arm is provided on the side of the horizontal transmission case 19. from mowing input case 1 of the side, the swing transmission Quai
Case 11 projects forward, and the front end of the swing transmission case 11
The bevel gear case 13 is fixed to the
13 is the upper right transmission case 14 on the side of the horizontal transmission case 19.
A transmission case 16 is fixed at the lower end of the upper right transmission case 14 so as to be rotatably fitted in the middle part.
The lateral transmission is performed by the gear train in the transmission case 16.
Lower inside the lower right transmission case 17 fixed to the case 19
The power is transmitted to the transmission shaft 18 , and the lower transmission shaft 18 extends downward, and
The power is transmitted to the lateral transmission shaft 20 of the
A combine for driving a cutting blade / screw drive shaft 42 for driving a cutting blade and a rake .