JPS6040104Y2 - Grain culm vertical conveyance device in combine harvester - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vertical husk conveying device that vertically conveys cut husk culms in a combine harvester and delivers them to the feed chain of the threshing section.

In this type of vertical shell culm conveying device, a clamping rod is provided along the conveying chain and is biased to move in the direction of the conveying chain by a spring and clamps the reaped shell culm between it and the conveying chain. Although it is said that the trapping rods prevent the inner shell culm from falling off the conveyance chain, the following problems have been observed in conventional shell culm vertical conveyance devices.

In other words, the husk vertical conveyance device is placed at the end of the conveyance, and is configured to deliver the husk to the threshing section feed chain at a portion where the conveyance chain has made a slight turn from the straight path to the curved path. For this reason, the terminal end of the above-mentioned clamping rod is formed into a curve along the curved running path of the conveying chain, so that the culm falls off at the curved running path of the conveying chain before being transferred to the feed chain. It is designed to prevent this.

However, the spring that moves and biases the above-mentioned lever is
Since the rod is provided to move and energize the rod toward the straight running path of the conveyor chain, which constitutes most of the vertical conveyance path of the culm, the rod is curved as described above. The end portion of the rod is not energized to move toward the curved travel path of the conveyor chain.

For this reason, when the shell culm is conveyed from the straight running route section to the curved running route section of the conveyor chain, the shell culm is insufficiently clamped. There were problems such as falling off.

Therefore, in this invention, in addition to the main rod that prevents the shell culm from falling off on the straight path of the conveyor chain, an auxiliary rod is provided to prevent the shell culm from falling off on the curved path of the conveyor chain. In addition to solving the above-mentioned problems, we have developed a new vertical shell culm conveying device for combine harvesters that uses such auxiliary clamping rods to improve the performance of transferring the shell culm stock base to the shedding section feed chain. This is what we are trying to provide.

Regarding the illustrated embodiment, the configuration of the vertical shell culm conveying device in the combine harvester according to this invention will be explained. As shown in FIGS. The grass culm to be planted in the field is separated by the weed splitting body 2, and the planted culm is pulled up by the culm pulling device 3 provided at the front of the machine so as to be inclined diagonally backward and upward. The lower cutting blade 4 cuts the planted culms at the base of the plant, and the lower conveyor device 5, which is equipped with a pair of conveyor belts 5a and 5b that joins the base of the cut culms at position A, transports the machine. The harvested husks are collected at a side position and fed to a threshing section 8 by a husk vertical conveyance device 6 for vertical conveyance of the stock head section and an ear tip conveyance device 7, and a feed chain 9 disposed on one side of the threshing section 8. The structure is such that the harvested husk is threshed while being transported rearward at the bedside portion thereof, and the straw exiting the threshing portion 8 is supplied to the cutter device 11 by a straw conveying device 10 that shifts the straw toward the already cut field. Passenger seat 12a on the other side of the front
This invention has been implemented as follows in a combine harvester which is provided with a control section 12 equipped with a control section 12 and a paddy receiving section 13 behind it.

That is, as shown in FIG.
The support frame 15 is tilted rearward upwardly and in the exceptional direction, a pair of sprocket wheels 16.17 are rotatably arranged at the lower end and the upper end of the support frame 15, and the space between the two sprocket wheels 16.17 is provided. A conveyor chain 18 with a protrusion 18a that is suspended from the conveyor chain 1
Main clamping rod 1 installed along the upward travel path of 8
9, and an auxiliary pinning rod 20 provided along the conveyance end of the conveyance chain 18, which is slightly aligned with the longitudinal direction of the machine in order to achieve smooth culm delivery and conveyance from the conveyance chain 18 to the feed chain 9. This vertical shell culm transport device 6 includes a support shaft 22 that projects from the front of a support stand 21 that also serves as a battery case on the fuselage, and a support shaft 22 that projects rearward from the support frame 15. By connecting the support shafts 23 with the crank 24, the conveyance start end side is supported so as to be rotatable around the crank 24, that is, the conveyance end side can be displaced along the transverse direction of the machine body, and A transmission case 26 is provided in the drive force transmission mechanism of the chain 18 extending from the transmission case 25 to the sprocket wheel 17 along the above-mentioned displacement direction of the conveyance end. , not shown), and the above-mentioned transmission mechanism and the conveying device 6 connected thereto are provided on the upper surface of the support base 21.
A hydraulic cylinder 27 is provided parallel to the transmission case 26 to support the conveyance end portion, and the transmission mechanism after the sliding portion and the conveyance end portion of the conveyance device 6 are displaced by the hydraulic cylinder 27. Although it is configured to obtain displacement along the transverse direction of the fuselage, the above-mentioned auxiliary clamping rod 20 is particularly provided as follows according to this invention.

That is, first, as shown in FIGS. 1 and 3, the sprocket wheel 17 supporting the conveying chain 18 at the conveying end portion of the vertical conveying device 6 is located at a position where the threshing wheel 17 is lower than the longitudinal axis of the vertical conveying device 6 when viewed from the side. Feed chain 9 of section 8
This allows the culm stock head portion that has been vertically conveyed to be slightly and positively transversely conveyed in the direction of the feed chain 9 to the curved travel path of the conveyance chain 18 at the conveyance end. It has a transport function.

While the main clamping rod 19 is provided along the straight running path (upward running path) of the conveyor chain 18 and is biased to move toward the straight path by a leaf spring 33, which will be described later, As shown in FIG. 1.3, the auxiliary pinning rods 20 are rotated in the direction toward and away from the conveying chain 18 in the above-mentioned curved travel path of the conveying chain 18 at the conveying end of the vertical conveyor 6. In order to be freely movable, it is rotatably supported on the main lever 19 by a support shaft 28.

In order to guide the vertically conveyed culm stock base in the direction of the feed chain 9, a culm delivery guide rod 34 shown in FIGS. 1 and 3 is used.
However, the base end side is attached to the vertical conveyance device 6, and the distal end side is arranged along the feed chain 9.
As shown in FIG. 3, the above-mentioned auxiliary pinning rod 20 is connected to the culm delivery guide rod 34, and when viewed from the side, the tip of the auxiliary pinning rod 20 is closer to the conveyor chain 1 than the tip of the culm delivery guide rod 34.
They are arranged so as to cross each other so that they are located on the 8th side.

As shown in FIG. 3, the auxiliary lever 20, which is shaped like a plate with a concave guide surface 20a provided on the inner surface, is slightly different from the main lever 19 as shown in the figure. By engaging the spring 29 provided on the main lever 19 with the proximal end bent in the direction along ing.

As shown in FIG. 4, this auxiliary lever 20 is arranged in an outer side view of the main lever 19, that is, on the side farther from the feed chain 9 than the main lever 19.

In addition, as shown in FIGS. 1 and 3, the culm delivery guide rod 34 is on the front side of the auxiliary pinning rod 20 when viewed from the same figure, and therefore on the side farther from the conveyor chain 9 than the auxiliary pinning rod 20 when viewed from above. It is located in .

In FIG. 3, 30 indicates the main clamping rod 19 and the sliding rod 3.
1, which supports the supporting frame 1 via the support frame 1;
5 is fixedly supported by a support arm 32 that extends around the conveyor chain 18; 33 is a leaf spring that biases the main lever 19 to move in the direction of the conveyor chain 18 via the sliding rod 31; This is a support mechanism that supports the sprocket wheel 16 while displacing and biasing the conveyor chain 18 in the tension direction, and in the illustrated culm vertical conveyor device 6,
On the chain sliding contact surface of the guide rail 36 for the conveyance chain 18 configured with a part of the support frame 15,
As shown in FIG. 5, a highly wear-resistant guide plate 37 made of synthetic resin or the like is replaceably attached with countersunk screws 38.

The illustrated shell culm vertical conveyance device 6 is constructed as described above, and includes a conveyance chain 18 and a main culm rod 19.
The base of the culm stock was conveyed vertically while being held between the
In the curved travel route of the conveyor chain 18, the conveyor chain 18 is held between an auxiliary strap 20, which is different from the main strap 19, and the auxiliary strap 20 has a spring in the direction of the chain 18 in the curved travel route. Since the culm transfer guide rod 34 is displaced and energized by the auxiliary clamping rod 29, it is firmly held and does not fall off. 18 and the auxiliary pinning rods 20, the culms are conveyed by being held between them. 20 and the culm delivery guide rod 34 intersect as described above when viewed from the side.
Even if there is a shell culm that tries to come out from between them in the direction of the tip of the auxiliary pinning rod 20, such a shell culm is received by the shell culm delivery guide rod 34 at the intersection of the rods 20 and 34, Guide rod 3
4, the shell culm is guided as it is in the direction of the feed chain 9, and there is no phenomenon in which a part of the shell culm falls off at the end of the conveyance of the vertical conveyance device 6.

In addition, the sprocket wheel 17 at the end of the conveyance is arranged to be biased toward the feed chain 9 side as described above, and the curved running path section of the conveyance chain 18 has the function of conveying the culm stock base slightly laterally in the direction of the feed chain 9. In other words, the auxiliary lever 2 is different from the main lever 19.
0, the position of the sprocket wheel 17 is set as described above, taking advantage of the fact that there is no risk of the shell culm falling off even if the curved running path of the conveyor chain 18 is long in the direction of the feed chain. Conveyance chain 1
Since the curved running path section 8 has a slight culm lateral conveyance function, the transfer performance of the culm stock base from the culm vertical conveyance device 6 to the feed chain 9 is enhanced. .

As is clear from the above description, the husk vertical conveyance device in the combine harvester of this invention has a threshing section feed that is lower than the longitudinal axis of the vertical conveyance device when the sprocket wheel 17 supporting the conveyance chain 18 is viewed from the side at the end of the conveyance. By arranging it toward the side of the chain 9, the curved traveling path portion of the conveying chain 18 is formed at the conveying end portion, and the sprocket wheel 17 is positioned at the terminal end of the curved traveling path portion, and this curved traveling path portion is formed. Auxiliary clamping rod 2 in the route section
0 is rotatably supported on a main lever 19 for the conveying chain 18 by a support shaft 28 so that it can freely rotate in the direction toward and away from the conveying chain 18, and a spring equipped on the main lever 19. 29, the culm delivery guide rod 34 is rotatably biased in a direction close to the curved travel path of the conveyor chain 18, and further guides the grain stock base in the direction of the threshing section feed chain 9, as seen in plan view. The husk delivery guide rod 34 is arranged so as to be located on the side farther from the threshing section feed chain 9 than the auxiliary ram 20, and the husk culm delivery guide rod 34 and the auxiliary ram 20 are are arranged to intersect with each other so that the tips of the auxiliary clamping rods 20 are located closer to the conveyor chain 18 than the tips of the culm delivery guide rods 34 when viewed from the side; It has the advantages of

That is, in the vertical conveyor of the shell culm of this invention, in the curved travel path of the conveyor chain 18 at the end of conveyance, the distance between the conveyor chain 18 and the conveyor chain 18 is not used by the main rod 19 but by a separate auxiliary rod 20. The structure is such that the culm clamping is carried out at
Since the spring 29, which is independent from the spring 9, is actively biased to move in the direction approaching the conveyance chain 18, the culm can be firmly held even on the curved travel path of the conveyance chain 18 mentioned above. In a side view, the shell culm delivery guide rod 34 is used to prevent the shell culm from falling off, and the support supports the auxiliary pinning rod 20 at a position closer to the plant base than the position of the auxiliary pinning rod 20. By intersecting as described above, the culm that is about to be pulled out from between the curved travel path of the conveying chain 18 and the auxiliary ram 20 toward the tip of the auxiliary ram 20 is prevented by the culm delivery guide. Since it is received by the rod 34 and guided in the direction of the feed chain 9 by the guide rod 34, this also prevents the shell culm from falling off. This completely eliminates the conventional problem of the shell culm falling off the conveyor chain 18.

In addition, in the vertical conveyance device for shell culms of this invention, by providing the above-mentioned auxiliary clamping rods 20, even if the curved traveling path section at the end of the conveyance chain 18 is lengthened, the shell culms do not fall off. By setting the position of the sprocket wheel 17 at the end of the conveyance as described above, the curved running path section of the chain 18 is extended in the direction of the threshing section feed chain 9, and the curved running path section is extended in the direction of the feed chain 9. Since it has a lateral conveyance function to slightly convey the shell culm laterally, the transfer performance of the shell culm stock base to the threshing section feed chain is improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of a combine harvester equipped with an embodiment of this invention, Fig. 2 is a plan view of the combine, Fig. 3 is a partially vertical side view of the embodiment, and Fig. 4 is a side view of the combine harvester. A schematic front view, and FIG. 5 is an enlarged cross-sectional view taken along the line ■-V in FIG. 3. 6... Culm vertical conveyance device, 9... Feed chain, 17... Sprocket wheel,
18... Conveyance chain, 19 Main lever, 20.
...Auxiliary armrest, 28...Spindle, 29.
... Spring, 34 ... Culm delivery guide rod.

Claims (1)

[Scope of utility model registration request] By arranging the sprocket wheel 17 that supports the conveyance chain 18 at the end of the conveyance so as to be biased toward the threshing section feed chain 9 side with respect to the longitudinal axis of the vertical conveyance device when viewed from the side, the conveyor chain 18 is placed at the end of the conveyance. A curved travel path portion is formed by positioning the sprocket wheel 17 at the end of the curved travel path portion, and in this curved travel path portion, the auxiliary pinning rod 20 is freely rotatable in a direction toward and away from the conveyor chain 18. As shown, it is rotatably supported by a main lever 19 for the conveyor chain 18 by a support shaft 28, and a spring 29 equipped on the main lever 19 moves the conveyor chain 18 in a direction approaching the curved running path. A culm delivery guide rod 34 that is rotatably energized and further guides the grain culm stock base in the direction of the threshing section feed chain 9 is shown in a plan view.
The husk culm delivery guide rod 34 and the auxiliary ram 20 are arranged so as to be located on the side farther from the threshing section feed chain 9 than 0, and the tip of the auxiliary ram 20 when viewed from the side. A vertical shell culm conveying device in a combine harvester, in which the shell culm vertical conveyance device in a combine is arranged to cross each other so that the shell culm delivery guide rods 34 are located closer to the conveyor chain 18 side than the predecessor of the shell culm delivery guide rod 34.