JPH0741311Y2 - Stem culm harvesting machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a stem culm harvester for cutting and harvesting stalks planted in fields such as soybeans.

[Problems to be Solved by Conventional Techniques and Inventions] Generally, in this seed stem culm harvesting machine, a pretreatment section provided with a cutting blade is used to perform cutting and harvesting work in correspondence with ridges. When performing harvesting work or split work of
It may not be possible to run the aircraft so that the pre-processing unit coincides with the ridge position, and therefore it has been proposed to move the pre-processing unit to the left and right. As such a device, there has been known a device in which a pretreatment unit is laterally displaced as shown in, for example, Japanese Patent Laid-Open No. 64-20021. In this product, the lifting conveyors on the root side and the tip side are vertically overlapped on the starting end side and the conveying end side is widened to the left and right so that the stems to be lifted and conveyed gradually fall. However, in this one, both lifting carriers are integrated, and since it is configured to swing left and right with respect to one support shaft provided on the machine body side, When the left and right swings follow the movement of the pretreatment unit, both transport start ends are swung together as a unit, and the posture of both transport start ends facing the pretreatment unit and both transport facing the stem-culm processing unit There is a problem in that the posture of the terminal end portion changes significantly, and as a result, the scraping posture of the stems changes, and smooth scraping conveyance is impaired.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised with the object of providing a stalk-culm harvesting machine capable of eliminating these problems. In a stem cutting device, which comprises a pretreatment unit that moves to the left and right with respect to each other, and a lifting carrier on each of the tip side and the stock side for lifting and transporting the stems cut by the preprocessing unit, The two lifting carriers are arranged so that the starting end portion side is vertically overlapped and the ending end portion side is widened to the left and right, and the stems are gradually laid down from the standing posture during the lifting and conveying process. In addition, the two transporting end portions of the two transporting carriers are pivotally supported on the machine body side by swinging support shafts arranged at positions separated from each other in the left and right directions, while both transporting start end portions are pivotally supported. Are connected via swinging means, and one of the transport start end sides is It is characterized in that it is connected to a pre-processing unit that moves left and right via a flexible means.

The present invention, by virtue of this configuration, makes the facing relationship between the tip end side and the pretreatment section on the transfer start end side of each lifting transfer body on the stock base side,
Even if the pre-processing section swings following the left-right movement, it can be maintained in substantially the same state.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a stem and culm harvesting machine,
Is a pretreatment unit 2 described below, a shredding unit 3 for shredding the cut stalks, a stalk scraping unit 4 for forcibly feeding the stalks to the shredding unit 3, and a screening process for shattered grains. It is the same as that of the related art that it is configured by the member unit such as the sorting unit 5 that performs the above-described operation, the crawler type traveling device 6, and the like.

A pair of left and right columns 1b are integrally erected on the front part of the body frame 1a of the harvester 1, and a transmission shaft 7 is attached to a bracket 8a integrally bolted to the upper end of the columns 1b.
The left and right ends of the case 8 for covering are supported rotatably around the axis. Further, of the columns 1b, a case 9 is integrally fixed to the outer column 1b, and the upper end of the intermediate shaft 10 and the outer end of the transmission shaft 7 housed in the case 9 are bevel gear mechanism 11. Are linked together.

On the other hand, the output shaft 13 from the transmission case 12 and the inner end of the intermediate shaft 14 are integrally connected by spline fitting to the connecting member 15.
The outer end portion of the auxiliary shaft 16 and the inner end portion of the auxiliary shaft 16 are integrally connected by spline fitting to the connecting member 15a, and the auxiliary shaft 16 and the intermediate shaft 10 are interlocked by the bevel gear mechanism 11a. It is connected. Reference numeral 17 denotes a case that covers the intermediate shaft 14. The inner end of the case 17 is slidably fitted onto the boss 12a of the transmission case 12, and the outer end is the lower end of the case 9. Although it is slidably fitted onto the boss portion 9a provided on the case 17, the case 17 is restrained from moving outward by the stop ring 17a in a state of substantially abutting the transmission side boss portion 12a. When the stop ring 17a is removed, the case 17 is moved to the outside by being guided by the boss portion 9a, whereby the output shaft 13 and the intermediate shaft 14 are separated from each other. The connecting portion using the connecting member 15 is exposed so that the attaching / detaching work can be easily performed.

In this way, the transmission shaft 7 that is power-transmitted to the engine side is interlocked and coupled to the first output shaft 19 for driving the lifting conveyance body described later through the worm gear mechanism 18, while the bevel gear mechanism 20 is connected. It is interlocked with a second output shaft 21 for driving the cutting blade 23 and the like. This second output shaft 21 is provided with a body side shaft half portion 21a provided with the bevel gear mechanism 20 and a universal joint (corresponding to the universal joint mechanism of the present invention) 24, 24a at both ends thereof. It is divided into two parts, a processing part side shaft half part 21b, and both shaft half parts 21a and 21b are flexibly connected by a universal joint 24, but a case that covers the fuselage side shaft half part 21a. A bracket 25a is integrally attached to the tip of the cylinder 25. A telescopic cylinder 26 that constitutes an elevating mechanism of the pretreatment section 2 is interposed between the bracket 25a and the machine body frame 1a.
By the extension and contraction of the extension and contraction cylinder 26, the pretreatment unit 2 is moved up and down including the cutting height adjustment.

Further, the base end portions of a pair of link arms 27 forming a parallel link mechanism arranged so as to sandwich the shaft half portion 21b on the side of the pretreatment unit on the left and right are swingably connected to the bracket 25a with the support shaft 27a as a fulcrum. On the other hand, the tip end portion of the link arm 27 is swingably connected to the frame 2a of the pretreatment unit 2 via a support shaft 27b. The positions of the support shafts 27a and 27b are the positions at which the universal joint 24 is provided, and the universal shaft for interlocking with the preprocessing unit side shaft half 21b and the input shaft 28 incorporated in the preprocessing unit frame 2a. The position of the joint 24a is arranged so as to substantially coincide with the link direction (front-back direction), whereby the pre-processing section 2 is configured to be movable left and right. And input axis
The power input to 28 is transmitted to the tip end side and the stocker side stem culm scraping bodies 31, 32 via the transmission shaft 29 and the worm gear mechanism 30, and also to the cutting blade 23 side via the bevel gear mechanism 33. It is configured to be transmitted. The pre-processing portion side shaft half portion 21b is provided with spline fitting means 21c and is configured to be extendable / contractible in the longitudinal direction.
The configuration is such that the error of the movement stroke due to the fact that the positions 4 and 24a do not correspond exactly to the positions of the link support shafts 27a and 27b are absorbed.

34 is an operating rod, and the tip end of the operating rod 34 is screwed into a screw cylinder 35 provided on the inner link arm 27 via a pin 27c so as to be swingable, while the base end of the operating rod 34 is The bracket 25a
The support metal fitting 25b provided on the pierce through so as to be rotatable about the axis and regulated to move in the axis direction, but a pin 34a is further provided at the outer end so as to project, and in a crank shape. A connecting plate 36b having a long hole 36a formed therein is provided at the tip of the bent handle 36, and a pin 34a is loosely fitted in the long hole 36a. When the handle 36 is guided in the elongated hole 36a and pushed inward, the handle 36 has a small-diameter portion 34b provided at the outer end of the operating rod 34 and a fitting hole 3 formed at the tip of the handle.
6d is externally fitted, whereby the handle 36 and the operating rod 34 are integrated, and by the rotation of the operating rod 34 following the turning of the handle 36, the operating rod 34 is referenced with respect to the support metal fitting 26a. The link arm 27 is moved in the left-right direction to swing the link arm 27, so that the pre-processing section 2 can be displaced in the left-right direction. The operating rod 34 is provided with a left and right lock nut 34c, and when the lock rod 34c hits one of the left and right ends of the screw cylinder 35, further movement of the operating rod 34 is restricted. The lateral movement amount of the unit 2 is determined. Of course, the rotation of the operating rod may be automatically performed using a motor, and it is more convenient if the switch operation is performed in the driver's seat.

On the other hand, 37 is a tip-side lifting carrier, 38 is a stocker-side lifting carrier, and these carriers 37 and 38 are overlapped up and down on the starting side of the transfer and the culm is collapsed on the ending side of the transfer. Although it is arranged in a posture in which it spreads to the left and right to be lifted and transported, the transporting end portion of the stock-side lifting transporter 38 has a cover cylinder 39 covering the first output shaft 19 via an arm 38a. On the other hand, the support shaft 37c of the sprocket on the transfer end side of the tip side lifting transfer body 37 is swingably supported on the machine side. Furthermore, the tip-side lifting carrier 37 is linked to the first output shaft 19 via the chain transmission mechanism 40, and is configured by using a carrier chain with a claw 37b wound inside the carrier case. In addition, the stock carrier side lifting carrier 38 is a carrier chain 38.
b is directly meshed with the sprocket provided on the first output shaft 19, and the stem culm is lifted and conveyed as the first output shaft 19 rotates. The shaft core 38d of the lower end side sprocket 38c of 38 is connected to the pretreatment section 2 side through a swinging link (corresponding to the interchange means of the present invention) 40. On the other hand, the tip side lifting conveyer 37 is connected to the stocker side lifting conveyer 38 on the lower side via a swinging link (corresponding to swinging means of the present invention) 41. Then, when the pretreatment unit 2 is displaced to the left or right by the link operation as described above, the lifted carriers 37 and 38 follow the displacement and swing left and right around the axis of the first output shaft 19. It is configured. In this case, when the pretreatment unit 2 is moved in the left-right direction by L by the operation of the parallel link mechanism, the pretreatment unit 2 is displaced by A in the front-rear direction. The starting end side also follows the pre-processing unit 2 and moves left and right by L. At this time, the deviation amount in the front-rear direction of the stock-side lifting carrier 38 swinging about the shaft 19 is B, and the front-back direction of the stock-side lifting carrier 37 swinging around the shaft 37c. The shift amount of the link arm 27 is C.
The swing range is selected, and in particular, in the embodiment, the shift amount has a relation of B>A> C, and the tip side and the stock side are lifted with respect to the shift of the pretreatment unit 2 in the front-rear direction. Upper carrier 37,
The deviations in the front-back direction of 38 are set to be averaged.

Further, in this one, the positional relationship between the two lifting carriers 37, 38 on the transport start end side, that is, the axis of the transport start end side sprocket,
As shown in FIG. 6, when the pretreatment section is displaced to the right side, the relationship is shifted by D. On the other hand, when the pretreatment section 2 is displaced to the left side, the deviation amount E in the left-right direction is the deviation. It is set so as to be substantially equal to the amount D, whereby the transport state at the transport start end portions of the lifting transporters 37, 38 is changed.
It is designed so that it does not change as much as possible even when it is laterally displaced, and it is configured so that reliable culm transfer is always performed.

Further, in this structure, the axial direction of the pretreatment unit side shaft half 21b is not parallel to the link direction of the link arm 27 of the parallel link mechanism, and the pretreatment unit side tip is displaced outward. In the normal use state in which the pretreatment unit 2 is displaced to the outside of the machine body, the transmission shaft 21 is bent to the outside of the link arm 27, and the pretreatment unit 2 is set to perform a ridge work or the like. The amount of inward bending of the transmission shaft 21 when displaced to the inside of the machine is smaller than that of the link arm 27, so that the bending angles of the universal joints 24 and 24a do not become excessive. .

On the other hand, the stem culm scraping section 4 is arranged on the stem culm input port side of the shattering section 3 and forcibly supplies the stalks lifted and conveyed to the shattering section 3. The scraping body 51 forming the culm scraping portion 4 is configured to be retractable upward for manual handling. That is, the left and right side plates are in front of the stem culm inlet.
Although a shaft 43 is provided, a support shaft 44 is attached to the side plate 43.
Although it is rotatably supported via a, a transmission gear 45 and a sprocket 46 are integrally fixed to the outer end of the support shaft 44. Then, this sprocket 46 and a sprocket 47 fixed to a transmission shaft 47 rotatably provided on the outer side plate 43.
Chain 48 is wound and linked with a. Incidentally, 49 is a sprocket for tension.

Further, an operating cylinder shaft 50 provided so as to cover the transmission shaft 44.
Is rotatably supported by a boss portion 43a formed on the left and right side plates 43, and a scraping body 51 is integrally attached to the operating cylinder shaft 50 via a support frame 52. The scraping body 51 is configured so as to be capable of swinging displacement between a scraping working position on the lower side and a non-working position on the upper side with the axis of the actuating cylinder shaft 50 as a fulcrum.

Reference numeral 53 is an operating shaft for operating the scraping chain 51a of the scraping body 51, and the operating shaft 53 is attached to the scraping body 51 by a bearing 53a.
The outer end of the operating shaft 53 projects outward through a long hole 43b formed in the side plate 43, and the final gear is attached to the projecting end.
54 is integrally attached. On the other hand, the transmission gear 45 is always meshed with the intermediate gear 55, and the final gear 54 on the scraping body 51 side is selectively meshed with the intermediate gear 55. In other words, the final gear 54 is
When 51 is in the acting posture described above, it meshes with the intermediate gear 55, but when it is in the non-acting posture, it moves upward and is disengaged from the intermediate gear 55, whereby the gear clutch automatically moves. It is configured to cut. In the present embodiment, the scraping body 56 is also arranged on the lower side so as to face the scraping body 51. However, the lower scraping body 56 is always configured to scrape.

Reference numeral 57 denotes a cover that covers the upper scraping body 51 from the upper side. The cover 57 is pivotally supported on the side plate 43 by a support shaft 57a so as to be vertically swingable, while the operating cylinder shaft 50 has a cover 57. For supporting The base end of the support frame 58 having a shape is integrally connected, but the operation lever 59 is further connected to the support frame 58.
And a locking hook 60 is further integrally fixed to the base end of the operating lever 59. A release pin 61 is provided on the side plate 43 so as to correspond to the locking hook 60 when the cover 57 is closed.
The tip end is always urged by 61a toward the side engaging with the locking hook 60. And the release pin 61 is the locking hook 60.
In the state of being engaged with, the upward movement of the scraping body 51 together with the cover 57 to the non-acting posture is restricted, but in order to set the scraping body 51 to the non-acting position from this state, the release pin 61
Is pulled against the ammunition 61a to release the engagement with the locking hook 60, and if the operating lever 59 is gripped and lifted in this state, the scraping body 51 is displaced to the non-acting posture together with the cover 57, Moreover, as described above, the gear clutch is also configured to be in a disconnected state. The support frame 58 has an engaging pin 58.
a is provided, and the locking pin 58a is loosely fitted in the guide hole 57b provided on the cover 57 side to open / close support the cover 57.

In the embodiment of the present invention configured as described above, the pre-processing unit 2 is displaced left and right by the parallel link mechanism by the left and right link arms 27, so that the pre-processing unit 2 is moved to the ridge position. It is possible to perform harvesting work by displacing it to the optimum position, and the stem culms cut by the pretreatment unit 2 are arranged so that the transport start end side overlaps vertically and the transport end end side expands left and right. The lifting conveyors 37 and 38 on the tip side and the stocker side are gradually conveyed while being lifted and fed to the grain shedding section 3, but the above-mentioned lifting conveyors 37 and 38 are When the pretreatment unit 2 is horizontally swung following the horizontal movement, the facing relationship between the transport start end portion and the pretreatment unit 2 hardly changes.

That is, in the present invention, the two lifting conveyers 37, 38 connect the conveying start end portions to each other by the swinging link 41, and the conveying end end sides are provided with the support shafts 37a, 19 respectively displaced left and right. As a fulcrum, it swings to the left and right, and further, the swinging link 40 at which the transporting start end of the stocker side lifting transporting body 38 is a flexible means.
Is swingably connected to the pretreatment unit 2 side through
When the two lifting carriers 37, 38 swing left and right following the left-right movement of the pretreatment unit 2, the two lifting carriers 37, 38 swing about the support shafts 37a, 19 as fulcrums, respectively. However, on the transport start end side, the positional relationship in the left-right direction is hardly displaced due to the joint motion of both swing links 40 and 41, and accordingly, the transport start end portions of both lifting transport bodies 37 and 38. The slight change in the facing attitude between the pretreatment section 2 and the transferring means section and the shattering section 3 makes it possible to improve the scraping performance of the lifted carrier bodies 37, 38 of the cut stalks. Even if the left and right swings based on the left and right movements of the pretreatment section are almost unchanged, it is possible to always perform the lifting and conveying with high efficiency.

Needless to say, the present invention is not limited to the above-mentioned embodiment, and the flexible connection between the pretreatment section and the lifting carrier may be a tip-side lifting carrier, or as means for flexible connection. Alternatively, for example, the pin provided on the pretreatment section side may be loosely fitted in the elongated hole provided on the lifting conveyance body side.

[Advantages] In short, since the present invention is configured as described above, the pretreatment unit is configured so that it can be laterally moved and adjusted by using a parallel link mechanism having a simple structure. Although the left and right positions can be adjusted according to the ridge position, both lifting carriers move the left and right sides of the support end part when the left and right oscillating shafts follow the left and right movement of the pretreatment unit. The left and right sides of the transfer start end and the transfer end of both lifted carriers are caused by the oscillating movements of the two lift carriers, and the fact that the transfer start end parts are connected via swinging means. It is possible to reduce the positional deviation and to reduce the change in the facing posture between the pretreatment section and the stem culm treatment section. As a result, the scraping performance of the lifted carrier of the cut culm is improved by the pretreatment section. By the horizontal swing based on the horizontal movement of the Also, there is almost no change, and it is possible to always carry out the lifting and conveying with high efficiency, and to smoothly supply the culm treatment section side to perform the culm treatment with high efficiency.

[Brief description of drawings]

The drawings show an embodiment of a stem-culm harvesting machine according to the present invention, wherein FIG. 1 is a schematic side view of the stem-culm harvesting machine, FIG. 2 is a plan view of a pretreatment unit, FIG. FIG. 4 is an operation explanatory view of the parallel link mechanism showing a state in which the pretreatment unit is moved to the left and right;
FIG. 6 is an explanatory view of the parallel link mechanism and the left / right displacement state of the lifting carrier, FIG. 6 is a mechanism explanatory view showing the left / right displacement state of the same, and FIG. 7 is a side view showing the stem-culm scraping cover. 8 is a side view showing the clutch gear meshing state of the same portion, FIG. 9 is a front view of the same portion, and FIG. 10 is a developed sectional view of the same portion. In the figure, 1 is a stem and culm harvester, 2 is a pretreatment unit, 21 is a transmission shaft, 21
Reference numeral a is a fuselage-side shaft half portion, 21b is a pretreatment portion-side shaft half portion, 24 and 24a are universal joints, 25 is a case cylinder, 25a is a bracket, and 28 is an input shaft.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Hosoda 667 Izuya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Address 1 Within Mitsubishi Agricultural Machinery Co., Ltd. (56) References: 63-145425 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A pretreatment unit that moves left and right with respect to the main body of the machine body, and head-side and stock-source-side lifting carriers for lifting and transporting the stem culms cut by the pretreatment unit. In the stem culm cutting machine, the both lifting carriers are arranged so that the transport starting end side is vertically overlapped and the transport terminating end side is widened to the left and right. In order to gradually incline from the standing posture, each lifting end of each lifting carrier is pivotally supported on the machine body side by swinging support shafts at the left and right separated positions. On the other hand, both stems of the transport start ends are connected via swinging means, and either one of the transport start end sides is connected to the pretreatment unit that moves to the left or right via interchange means. Harvester.