JP3418042B2 - Vertical transfer device in combine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to winding an endless rotating belt for conveying culm over a plurality of rings, and an endless rotating band for conveying culm. A clamping rail is arranged close to the end side, and the root of the harvested grain culm is clamped and conveyed to the feed chain side by the endless rotating band and the clamping rail, and the conveying of the plurality of rings is performed. The ring on the end side
The present invention relates to a vertical transport device in a combine which is configured to be adjustable in the longitudinal direction of the grain stem with respect to the feed chain, and is provided with a tension mechanism for loosening the endless rotary band for grain stem transport resulting from the perspective adjustment. . 2. Description of the Related Art A vertical conveying device in a combine is constructed so as to be swingable around a left-right fulcrum at a rear portion so as to be able to adjust a handling depth. In the case of a short culm, the vertical conveying device is lowered. The stake side is pinched and transported as much as possible and passed to the feed chain, but below the vertical transport device there is a rotating packer and cutting device that scrapes the harvested grain culm, and there is a limit to the downward movement. Therefore, with this configuration alone, the adjustment of the handling depth of the short culm becomes insufficient. Therefore, in addition to the above-described configuration, the transport-end-side wheel of the plurality of wheels is
The feed chain is configured so that the distance can be adjusted in the longitudinal direction of the grain culm, and for the short culm, the loop on the transport end side is moved away from the feed chain in the grain end longitudinal direction on the transport end side, and The original side is passed to the feed chain. [0003] Such a vertical transport device is provided with a tension mechanism for relaxing the endless turning band for transporting the grain stem caused by the above-mentioned distance adjustment. Conventionally, this tension mechanism is constituted by: Only an automatic tensioning mechanism is provided which automatically follows the change in the position of the endless turning belt for conveying the culm by the urging force of the urging means and automatically removes the endless turning band for conveying the culm. . [0004] According to the above-mentioned conventional structure, since the tension mechanism is constituted only by the automatic tension mechanism, the position of the endless rotating belt for conveying the culm is changed. Becomes larger, the urging force of the urging means is weakened accordingly, and it is difficult to sufficiently loosen the endless turning band for grain culm conveyance, and the endless turning band for grain culm conveyance smoothly rotates. Sometimes it wasn't done. It is an object of the present invention to provide a tension mechanism which can surely take the looseness of the endless rotating belt for conveying the grain stem which accompanies the adjustment of the distance. Movement is to be performed smoothly. [Means for Solving the Problems] [Structure] A characteristic structure of the present invention is to transport cereal stalks over a plurality of rings.
Endless rotating belt for winding the stalks
The clamping rail is placed close to the end of the swivel band.
Then, the endless swivel band and the clamping rail are used to cut the culm stalks.
The feed chain to the feed chain side.
The end of the plurality of wheels,
Adjustable lock that can be adjusted in the longitudinal direction of the grain with respect to the chain.
The cereal stalk transport that is configured in accordance with this
A tension mechanism is provided to loosen the endless rotary belt for feeding.
In the vertical transfer apparatus in that combine, to configure the intensifier <br/> tio emission mechanism, automatically the grain by the urging force of the urging means so as to follow the position change of the culms carrying endless rotating belt An automatic tension mechanism for loosening an endless rotating belt for transporting a culm and an adjustable fixed tension mechanism are provided. According to the first aspect of the present invention, since the adjustable tension type tension mechanism is provided in addition to the automatic tension mechanism, even if the position of the endless rotating belt for conveying the grain stalk is greatly changed. In addition, the looseness of the endless rotating belt for grain culm transport can be reliably removed. [Effect] Therefore, it is possible to provide a tension mechanism that can reliably take the looseness of the endless turning band for grain culm transport that accompanies the adjustment of the distance, and to rotate the endless turning band for grain culm transfer. Can be performed smoothly. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, on a traveling vehicle body provided with a crawler-type traveling device 1, a mowing unit 2 can be freely moved up and down by swinging around a support shaft 4 by a hydraulic cylinder 3. In addition to the connection, a threshing device 7 is mounted, and the cutting unit 2 is provided with a planted grain culm raising device 5, a cutting blade 6, and a vertical transport device 12 that sends the harvested grain culm to the feed chain 9 of the threshing device 7. To form a self-removing combine. The vertical transport device 12 comprises a stock-side clamping transport device 8 and a tip-side locking transport device 10, and is configured to be swingable around a left-right fulcrum at its rear end so that the handling depth can be adjusted. ing. As shown in FIG. 2, the stock-holding / conveying device 8 includes one driving wheel 8a, a first idler wheel 8b on the transport start end side, and a second idler wheel 8c on the terminal end side. A state in which the endless turning band 14 for conveying the grain and culm of the chain with the conveying claw is wound around the third idler wheel 8d in the middle thereof and faces the end side of the endless turning band 14 for conveying the grain and culm. Nipping rail 1
5, a pair of support rods 17 of the holding rail 15 are moved toward and away from the endless rotating band 14 on a holder 16 fixed to the free end of a curved first support rod 16a that bypasses the transport path. A spring 18 slidably mounted and biasing the holding rail 15 in the direction of approaching the endless turning band 14 is provided over the pair of support rods 17, and the cutting grain culm is cut by the endless turning band 14 and the holding rail 15. It is configured to convey the stocks to the feed chain 9 side. The second idler wheel 8c on the transport end side rotatably supports a base end of the support arm 19 pivotally supported by the transport frame so as to be able to swing left and right. A predetermined bolt insertion hole 41 is selected from a plurality of bolt insertion holes 41 formed in the middle part in the longitudinal direction, and is fixed to the female screw portion on the transport frame side by bolts, so that the feed chain 9 is aligned in the grain stem longitudinal direction. It is configured so that the distance can be adjusted between a close state and a separated state. A tension mechanism 1 for removing the looseness of the endless rotating belt 14 for grain culm conveyance caused by the adjustment of the distance.
3 and an automatic tension mechanism 20 that automatically loosens the endless turning belt 14 for conveying the culm following the change in the position of the endless turning band 14 for conveying the culm. , An adjustable fixed tension mechanism 21 is provided. The automatic tension mechanism 20 rotatably supports a tension wheel 24 at one end of a "-"-shaped swing member 23 having a bent portion swingably supported by a transport frame. The other end of the rocking member 23 is biased so that the tension wheel 24 presses the endless turning belt 14 for conveying the grain culm between the driving wheel 8a and the third idler wheel 8d from outside. The spring 22 is configured to be urged by the spring 22. In addition, the third idler wheel body 8d is coaxial with the swing axis P of the swing member 23,
It is pivoted at. As shown in FIGS. 2, 3 and 4, the adjustable fixed tension mechanism 21 is provided with the first idler wheel 8b.
And the third idler wheel 8d, the endless turning belt 14 for conveying the grain culm.
The guide rail 27 for pressing the connecting pin is supported by the transfer frame on the endless rotating belt 14 for conveying the culm so as to be adjustable in distance. This perspective adjustment mechanism forms a plurality of bolt insertion holes 29 in the support bracket 26 that supports the guide rail 27, and forms a female screw portion in the support bracket 28 on the transport frame side. The bolt insertion hole 29 is selected, and the brackets 26 and 28 are fixed to each other with bolts. The second support rod 25 is fixed to the bracket 26, and one end of the second support rod 25 is configured as a stopper that comes into contact with the support frame 42 of the mowing unit 2 and sets a lower limit. FIG.
FIG. 3 shows a state in which the second idler wheel 8c is brought close to the feed chain 9, and FIG. As shown in FIG. 5, the tip-side locking and conveying device 10 winds a chain 32 around a driving wheel 30 and two idler wheels 31, and a resin locking claw is attached to the chain 32. 33 is provided so as to be freely undulated, a guide rail 34 for maintaining the locking claw 33 in an upright state in the conveying operation area is provided, and a tensioning means A for urging the chain 32 in the grain non-conveying area is provided. . The tensioning means A includes an arcuate tension member 35 made of a sheet metal having a U-shaped cross section, which acts on the bottoms at both ends in the width direction of the plurality of locking claws 33 in the lying posture from outside of the chain 32. Urging mechanism 3 that presses and urges the inner side of the loop space surrounded by the chain 32
And 6 are linked and linked. The tensioning member 35 is swingably supported around a support shaft 37 provided at the upper end of the chain in the direction of movement of the chain. It is constituted by a tension spring 40. As shown in FIGS. 6, 7 (a), 7 (b) and 7 (c), the tension member 35 cuts the lower side in the moving direction of the chain 32 so as to follow the complicated movement of the chain 32. The groove around the notch is formed wider toward the lower side. In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a front portion of a combine. FIG. 2 is a stock-side clamping / conveying apparatus in a state in which a loop body on a conveying end side is close to a feed chain in a grain stem longitudinal direction. FIG. 3 is a plan view of a stock-side clamping / conveying device in a state in which a loop at a conveying end is separated from a feed chain in a longitudinal direction of a grain stem. FIG. 4 is a longitudinal section of an adjustable fixed tension mechanism. FIG. 5 is a plan view of the tip-side locking and conveying device. FIG. 6 is a rear view of the tensioning member. FIG. 7 is a perspective view of FIG. Roll view of FIG. 6 in the state where the locking claw is supported (c) View of the cah in FIG. 6 in the state where the locking claw is supported [Description of References] 8a, 8b, 8c, 8d Ring 9 Feed chain 13 Tension mechanism 14 Endless rotating belt 15 for culm transfer Nipping rail 20 Automatic tension mechanism 2 Regulation fixed tension mechanism

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 61/00-61/04 A01D 57/00 A01F 12/10

Claims (1)

(57) [Claims 1] A plurality of rings (8a), (8b), (8)
c) and (8d), the endless rotating belt (1)
4) and the holding rail (15) in a state of facing the end side of the endless turning band (14) for conveying the grain culm.
Are arranged close to each other, and the root of the harvested grain culm is clamped and conveyed to the feed chain (9) side by the endless rotating band (14) and the clamping rail (15). , (8b), (8c), and (8d), the wheel body (8c) on the transport end side is configured as an adjustable fixed type capable of adjusting the distance in the grain stem longitudinal direction with respect to the feed chain (9), A vertical transport device in a combine provided with a tension mechanism (13) for loosening the endless turning belt (14) for grain culm transport that accompanies this perspective adjustment, and constitutes the tension mechanism (13). In addition, the endless turning band for grain culm transport (1) is automatically followed by a change in the position of the endless turning band for grain culm transport (14) by the urging force of the urging means.
4) A vertical transport device in a combine provided with the automatic tension mechanism (20) for removing the slack and the tension mechanism (21) of an adjustable fixed type.