JP3478936B2 - Combine vertical conveyance device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear tip locking / conveying mechanism for locking and conveying the tip end side of a grain culm by an endless rotary body having a locking claw, and a chain with a projection and a gripping rod for the root side of the grain culm. Vertically transporting the combine harvester that is configured to transport the harvested grain culm to the starting end side of the feed chain by vertically arranging the stock source holding and conveying mechanism that is sandwiched by and on the back side of the grain culm raising device. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned combine vertical conveyer, a contact type cutting grain culm presence / absence sensor is used as a start sensor for executing various controls such as depth control, etc., only while the cutting grain culm is being conveyed. The contact frame is supported by a support frame on the main body of the device in the middle of the stop transport mechanism and the stock carrier holding transport mechanism, and its contacts are inward from the inner side of the transport action side portion in the top turning locus of the projection chain. And the posture of the contactor is set to be parallel to the upper side surface of the chain with protrusions when viewed from the transport direction of the grain stem.

[0003]

According to the above-mentioned conventional structure, since the attitude of the contactor is set to be parallel to the upper side surface of the chain with projection in the stock holding mechanism, the contactor is It becomes a little upward from the sandwiching and conveying path formed by the chain with the projection and the sandwiching rod, and the grain culvert comes into contact with the contact at a point separated upward from the portion sandwiched by the stock-source sandwiching and conveying mechanism. Then, when the grain culm is soft, it may escape by the reaction force from the contactor before a predetermined contact pressure is applied to the contactor.

An object of the present invention is to enable accurate detection of the presence of grain culms even if the grain culm is soft.

[0005]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is a tip locking transport mechanism for locking and transporting the tip side of a grain culvert by an endless rotary body with a locking claw, and a chain with a protrusion on the root side of the grain culm. A stock source holding and conveying mechanism for holding and conveying by means of a holding rod and a holding rod are arranged side by side vertically on the back side of the grain culm raising device, and the cut grain culm is conveyed to the starting end side of the feed chain. The corn stalk existence / non-existence sensor is supported by a support frame on the main body of the apparatus between the tip locking transport mechanism and the stock holding device, and its contactor is transported on the top turning locus of the chain with protrusions. While projecting from the inner side of the side portion to the outer side, the attitude of the contactor is adjusted so that the tip end side is closer to the protruding projection.
It may have been set in a front-lowering posture that is closer to the plane of rotation of the vane .

According to a second aspect of the present invention, in the first aspect of the present invention, the contactor of the harvested culm culm presence / absence sensor is formed in a straight line so that the contactor is in the front-down posture. The sensor body may be tilted and supported by the support frame.

[Operation] According to the structure of claim 1, the contact element is set such that
Since the chain is set in the front-lowering position, which is close to the plane on which the protrusion rotates , the grain culm contacts the contactor at a point close to the part clamped by the stock holding mechanism. Therefore, even if the grain culm is soft, it is difficult to escape from the contactor, and a predetermined contact pressure can be applied to the contactor.

Since other members are generally arranged between the base end side of the contactor and the chain with projections and there is no room in the space, the entire contactor is not attached to the chain with projections in the stock holding mechanism. If it is brought closer to the holding and conveying path side while being parallel to the upper side surface, the arrangement of other members has to be changed, and there is a problem that it takes time to change the design. The above-mentioned inconvenience does not occur.

According to the structure of claim 2, in addition to being able to exhibit the same operation as the operation according to the structure of claim 1, the contact of the harvested grain culm presence / absence sensor is formed in a linear shape, and Since the sensor main body is tilted and supported by the support frame so that the contactor is in the tip-down posture, for example, contact is made as compared with the case where the contactor is bent in the tip-down posture. The bending process of the child becomes unnecessary.

[Effect] Therefore, according to the structure of claim 1, even if the grain culm is weak, the presence of the grain culm can be accurately detected by the cut grain culm presence / absence sensor by simple modification of the structure. It was

According to the structure of claim 2, in addition to the same effect as that of the structure of claim 1, the manufacturing cost can be reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below for a combine for double-row cutting. As shown in FIG. 1, this combine is provided with a mowing pretreatment unit 2 at the front of a traveling machine equipped with a crawler traveling device 1, a threshing device 3 is mounted on the traveling machine, and The boarding operation unit 4 is arranged on one side.

As shown in FIG. 2, the reaping pretreatment unit 2 is
A pair of left and right raising devices 5 that cause the planted grain stalks that have laid down to be in an upright posture, a clipper-type cutting device 6 that cuts the root of the raised grain culm, and a harvested grain culm directed toward the center rear in the cutting width direction. A pair of left and right scraping packers 7 for scraping and conveying, and a rear side of the raising device 5 sandwiches the stock root side of the mowing culm in an upright position and conveys it backward while locking the tip end side of the feed chain 8. A hydraulic cylinder 1 provided with a machine body, which is provided with a vertical transport device 9 for delivering to a start end portion, and which has a cutting main frame 12 of a pre-mowing processing section 2 supported by a machine body frame 11.
It is configured such that when it is extended by 0, it swings up about the horizontal axis X, and when it shortens, it swings down.

As shown in FIG. 3, FIG. 4, and FIG. 5, the vertical conveying device 9 is a stock-source-holding / conveying mechanism 15 for nipping and carrying the stock-side of a grain stalk by a chain 15a having a projection and a holding rod 15b.
And a tip locking transport mechanism for locking and transporting the tip side of the grain culm by a chain 16a (corresponding to an endless rotating body with locking claws) to which locking claws 22 are attached at predetermined intervals and a guide rod 16b. 16 and 16 are arranged side by side vertically so that the harvested culm is conveyed to the starting end side of the feed chain 8.
In order to adjust the handling depth of the grain culms 5, 5 and 16 are configured to be swingable up and down by an electric motor M around a horizontal axis X corresponding to a rear fulcrum. That is, the inverted U-shaped frame 18 described later
The pair of culm length detection sensors Sa and Sb (see FIG. 6) provided in the sprocket are used to swing the both transport mechanisms 15 and 16 by the electric motor M so that the grain culm tip is positioned, and the grain culm length is determined. Regardless of this, the threshing device 3 is constructed so that the handling depth is maintained substantially constant.

As shown in FIG. 6, the holding rod 15b and the guide rod 16b are provided in a reverse U-shaped frame 18 connected to a connecting member connecting the stock holding device 15 and the tip locking and conveying device 16. It is attached to the lower end. The holding rod 15b is adapted to absorb the displacement of the passage width due to the supply amount of the transported grain stalks by a leaf spring 19, which stays extending from the inverted U-shaped frame 18. It is detachably attached to 20 through a bolt.

As shown in FIGS. 3 and 4, at the front end of the carrier frame 16c of the tip-locking carrier mechanism 16, a plate-shaped cut grain culm introducing body 13 made of an elastic resin is attached to the tip of the locking claw 22. It is supported in a cantilevered manner so as to project to the front side of the receiving rotation locus R. The harvested culm trowel introduction body 13 is set in a posture such that the locking claws 22 are rotated along the plate surface thereof, and is provided at the base end of the rear surface of the grain culm introduction body 13 at the front end of the transport frame 12. A contact plate 14 made of a metal leaf spring is applied.

Further, as shown in FIGS. 2 to 5, the contact-type harvested grain culm presence / absence sensor 23 is supported by the support frame 24 on the apparatus main body side between the tip locking transport mechanism 16 and the stock holding carrier mechanism 15. Then, the linear rod-shaped contactor 25 is projected from the inner side to the outer side of the portion on the conveying action side in the top rotation locus R2 of the chain 15a with protrusions. In other words, it is determined that the cutting operation is being performed only when the cut grain culm presence / absence sensor 23 detects the presence of the grain culm, and the electric motors M handle the both transport mechanisms 15 and 16 to swing them for adjusting the depth. Of. The posture of the contact 25 is set to a tip-down posture in which the tip end side is closer to the side of the pinching / conveying path by the chain 15a with a protrusion and the holding rod 15b. 26 is tilted and supported by the support frame 24. Also, the contact 25
Is configured to be swingable in an upright posture and a fallen posture about the longitudinal axis P on the proximal end side, and is biased to the upright posture side by a biasing means (not shown).

As shown in FIG. 2 and FIG. 6, the grain culms conveyed by the tip locking and conveying mechanism 16 and the stock holding and conveying mechanism 15 are sent to the starting end side of the feed chain 8 in a lying posture. The stay 2 extending from the inverted U-shaped frame 18 has a guide plate 27 made of a leaf spring in a rearward cantilever shape that is closer to the inner side of the tip locking disguise / displacement mechanism 16 toward the rear end side.
It is supported by 0. In other words, this structure causes the grain culm to
An intermediate portion between the tip locking transporting mechanism 16 and the stock holding mechanism (15) is pushed down while being guided by the guide plate 27 and fed to the starting end side of the feed chain 8.

[Another Embodiment] The cut grain culm presence / absence sensor 2
The contactor 25 of No. 3 may be formed in a curved shape, and the contactor 25 may be supported by the support frame 24 so that the contactor 25 is in the front-down posture.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a side view of the front part of the combine.

FIG. 3 is a plan view of a vertical conveyance device.

FIG. 4 is a side view of the vertical conveyance device.

FIG. 5 is a vertical cross-sectional view showing a mounting structure of a harvested culm culm sensor.

FIG. 6 is a vertical sectional view of a vertical conveyance device.

[Explanation of symbols]

5 Grain culm raising device 8 feed chains 15a Chain with protrusion 15b Holding rod 15 Share-holding transport mechanism 16 Tip locking transport mechanism 22 Locking claw 23 Grain culm presence / absence sensor 24 Support frame 25 contactor 26 Sensor body

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsuya Kanemitsu 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Plant (56) References JP 61-43925 (JP, A) JP 60- 168318 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01D 61/00

Claims (2)

(57) [Claims] 1. A tip locking transport mechanism for locking and transporting the tip side of a grain culvert by an endless rotating body with a locking claw, and a stock for clamping and transporting the grain basin side of a grain culm by a chain with protrusions and a gripping rod. The original holding and conveying mechanism is vertically arranged side by side on the back side of the grain culm raising device and configured to convey the harvested grain culm to the starting end side of the feed chain, and the contact type harvested grain culm presence / absence sensor is used as the tip. The contact frame is supported by a supporting frame on the main body of the apparatus between the locking transport mechanism and the stock carrier holding transport mechanism, and its contact is outward from the inner side of the transport action side portion in the top turning locus of the projection chain. Of the contactor, the posture of the contactor is changed so that the tip end side is a plane on which the chain with protrusions rotates.
The combine vertical conveyor that is set to the front-lowering position. 2. The contact element of the cut grain culm presence / absence sensor is formed in a linear shape, and the sensor main body is tilted and supported by the support frame so that the contact element is in the tip-down posture. 1. The vertical conveyor of the combine as described in 1.