JP2015188352A - Combine grain discharging device - Google Patents

Abstract

Even if the swinging posture of the discharge chute is held so that the drop position of the grain becomes high, the position of the holding release operation is prevented from being high. A lifting conveyor 13 that conveys grains stored in a grain tank upward, and an upper end of the lifting conveyor 13 that is swingably supported around a first horizontal axis Y1 A discharge chute 14 for guiding the grain discharged from the grain discharge port 13A formed at the upper end of the conveyor 13 to the outside of the machine body by its own weight, the discharge chute 14 and the conveying conveyor 13 are provided. A holding mechanism B configured to hold the discharging posture of the discharging chute 14 and to be able to release the discharging posture, and the grain discharge port 13A is formed at a position higher than the upper surface of the grain tank 11, and the holding mechanism The holding release operation part B1 in B is provided on the side of the conveying conveyor 13. [Selection] Figure 4

Description

  The present invention relates to a lifting conveyor that conveys grains stored in a grain tank upward, and is supported at the upper end of the lifting conveyor so as to be swingable around a first horizontal axis, and the lifting conveyor A discharge chute that guides the grain discharged from the grain discharge port formed at the upper end of the machine to the outside of the machine body by its own weight, the discharge chute and the transporting conveyor. The present invention relates to a combine grain discharging apparatus (hereinafter simply referred to as a grain discharging apparatus) provided with a holding mechanism configured to hold the discharging attitude and to be able to release the discharging attitude.

Patent Document 1 discloses a conventional grain discharging device including a holding mechanism that holds the swinging posture of the discharge chute so that the swing position of the discharge chute can be released so that the drop position of the grain from the discharge chute can be set to a predetermined height. Is described.
This conventional grain discharging device has a holding mechanism that releases the swinging posture of the discharge chute by screwing the free end of the tension member supported swingably on the lifting conveyor to the discharge chute. Hold it operable.
Therefore, the operation for releasing the holding of the discharge chute held in a predetermined swinging posture is performed by loosening the screw tightening of the tension member to the discharge chute.

JP2013-123414A

The conventional grain discharging device performs the holding release operation of the discharge chute by loosening the screw tightening of the tension member to the discharge chute, so that the swinging posture of the discharge chute is held so that the drop position of the grain becomes high It is easy to be restricted.
That is, since the holding release operation for loosening the screw tightening of the tension member to the discharge chute is performed, the position of the hold release operation becomes higher as the swinging posture of the discharge chute is held so that the drop position of the grain becomes higher.
As a result, the height of the drop position of the grain is limited to the height at which the operator can perform the holding release operation, and it is difficult to hold the swinging posture of the discharge chute so that the drop position of the grain becomes high.
The present invention has been made in view of the above circumstances, and it is intended to prevent the position of the holding release operation from becoming high even if the swinging posture of the discharge chute is held so that the drop position of the grain becomes high. Objective.

  According to the present invention, the combine grain discharging apparatus includes a lifting conveyor that conveys the grain stored in the grain tank upward, and a top end of the lifting conveyor that swings around the first horizontal axis. A discharge chute that is supported movably and guides the grain discharged from the grain discharge port formed at the upper end of the lifting conveyor to its outside by its own weight, the discharging chute, and the lifting conveyor, A holding mechanism configured to hold the discharge posture of the discharge chute and to be able to release the discharge posture, and the grain outlet is higher than the upper surface of the grain tank. The holding release operation part in the holding mechanism is provided on the side of the transporting conveyor.

  The grain discharging device of this configuration is configured so that the grain outlet is formed at a position higher than the upper surface of the grain tank, holds the discharging posture of the discharging chute, and is configured to be able to release the discharging posture. Is provided on the side of the conveying conveyor.

Therefore, in the case of the grain discharging device of this configuration, since the position of the grain outlet is set higher than the upper surface of the grain tank, even if the height of the loading platform such as a truck that receives the discharged grain is high. Kernel can be discharged properly.
Further, even if the swinging posture of the discharge chute is held so that the drop position of the grain becomes higher, the operation height with respect to the holding release operation portion provided on the lifting conveyor side does not increase.

  According to another characteristic configuration of the present invention, the holding mechanism is provided on the discharge chute, a tension member supported so as to be swingable around the second horizontal axis, and the second horizontal axis. It has the point which has the engaging part which can engage / disengage the free end part of the said tension member in the position lower than a core.

With this configuration, the swinging posture of the discharge chute can be releasably held by engagement of the tension member with the engagement portion, and the discharge chute release operation can be performed by releasing the engagement of the tension member with the engagement portion. It can be performed.
Therefore, the holding of the swinging posture of the discharge chute can be released by a simple holding release operation.

  Another feature of the present invention is that the tension member is swingably supported on the swing end side of the discharge chute.

  If it is this structure, it will be easy to provide a holding release operation part in a lower position.

  In another aspect of the present invention, the engaging portion includes a plurality of engaging grooves having different height positions, and a guide groove capable of guiding the free end portion to engage with any of the engaging grooves. Are in a series so as to communicate with each other.

  With this configuration, the discharge chute can be easily held in a desired swinging posture by engaging the free end portion of the tension member with the engagement groove by the operation of moving along the guide groove.

  Another characteristic configuration of the present invention is that the guide groove extends upward beyond the communication portion with the uppermost engagement groove.

  In this configuration, when the grain discharge port is narrowed when the discharge chute is swung beyond the engagement position with the uppermost engagement groove, in the engagement state with the uppermost engagement groove. In situations where it is necessary to discharge the grain to a truck with a platform height higher than the lower end height of the discharge chute, the discharge chute is temporarily swung largely to place an enclosure such as a truck bed at the lower end of the discharge chute. After getting over, the free end can be engaged with the uppermost engaging groove at the timing when the discharge chute swings downward, and a suitable discharge state can be secured.

  According to another characteristic configuration of the present invention, the conveyor case of the transporting conveyor is formed in a cylindrical shape with a cylindrical shaft core extending in the vertical direction, and the engaging portion forms the engaging groove and the guide groove in series. The groove plate portion and the auxiliary plate portion along the direction in which the plate surface intersects the plate surface of the groove plate portion, and the groove plate portion and the auxiliary plate portion, The plate surface is fixed to the conveyor case in a posture along the cylindrical axis.

  With this configuration, the engaging part is firmly positioned with respect to the conveyor case at two locations in plan view of the groove plate part and the auxiliary plate part arranged side by side in the circumferential direction of the conveyor case. It can be securely fixed in the state.

  Another feature of the present invention lies in that the auxiliary plate portion integrated with the groove plate portion is provided by cutting and raising an edge portion of the groove plate portion along the cylindrical axis.

  If it is this structure, an auxiliary plate part integral with a groove plate part can be provided easily.

  Another feature of the present invention is that a gripping mechanism capable of gripping the discharge chute in a posture along the transporting conveyor is provided on the free end side of the discharge chute.

  With this configuration, the moment required for the grip release operation can be set larger than when the gripping mechanism is provided close to the first horizontal axis side of the discharge chute. When not in use, the discharge chute can be stably held in a posture along the conveying conveyor.

  Another characteristic configuration of the present invention is that the grain discharge length of the discharge chute is provided so as to be changeable by a folding operation of the discharge chute.

  If it is this structure, the grain discharge length of a discharge chute can be changed as needed by simple folding operation of a discharge chute.

  Another characteristic configuration of the present invention is that the grain discharge length of the discharge chute is provided so as to be changeable by an expansion / contraction operation of the discharge chute.

  If it is this structure, the grain discharge length of a discharge chute can be changed as needed by simple expansion-contraction operation of a discharge chute.

It is a right view of a self-detaching combine. It is a top view of a self-desorption type combine. It is a rear view of a self-detaching combine. It is a vertical side view which shows a grain discharge apparatus. It is a perspective view which shows a grain discharge apparatus. It is a perspective view which shows a grain discharge apparatus. It is sectional drawing which shows the fixing structure of an engaging member. It is a perspective view which shows the fixing structure of an engaging member. It is a vertical side view which shows the grain discharge apparatus in 2nd Embodiment. They are the perspective view (a) and vertical perspective view (b) which show the discharge chute in 2nd Embodiment. It is a schematic side view which shows the grain discharge apparatus in 3rd Embodiment. It is a schematic sectional drawing which shows the holding | maintenance release operation part in 3rd Embodiment. It is a schematic side view which shows the grain discharge apparatus in 4th Embodiment.

[First Embodiment]
Hereinafter, as an example of a mode for carrying out the present invention, a first embodiment in which the present invention is applied to a self-removing combine that is an example of a combine will be described with reference to the drawings.

1 to 3 show a self-removing combine equipped with a grain discharging device A according to the present invention.
The self-detaching combine is equipped with a pair of left and right crawlers 2 at the lower part of a body frame 1 made of a steel material such as a square pipe material. On the front side of the right half of the body frame 1, an engine 3 is mounted and a boarding operation unit 4 is formed. At the front end on the left side of the machine body frame 1, a cutting and conveying device 5 that harvests crop cereals such as rice and wheat to be harvested that are located in front of the machine body during work traveling and conveys them to the rear is provided with a left and right support shaft ( It is connected and equipped so that it can be moved up and down with a fulcrum as a fulcrum. The left half of the machine body frame 1 receives the harvested cereal meal conveyed by the harvesting and conveying device 5 and conveys it to the rear while performing the threshing process on the granulated part of the harvested cereal meal. A threshing device 6 for performing a sorting process is installed. At the upper rear part of the threshing device 6, a threshing cereal conveyance device 8 is provided that receives the threshing cereal after the threshing process from the holding conveyance mechanism 7 of the threshing device 6 and conveys it to the upper rear side of the threshing device 6. At the lower rear end of the threshing device 6, a shredding device 9 that enables shredding and discharging of the threshing cereal mash conveyed by the threshing cereal masher 8 is connected and equipped. On the rear side of the right half of the machine body frame 1, a grain tank 11 made of sheet metal for storing the grains lifted and carried out from the threshing device 6 via the screw feed type supply conveyor 10 is mounted. The grain tank 11 is equipped with a grain discharging device A that enables the grain stored in the grain tank 11 to be discharged out of the machine.

  As shown in FIGS. 4 to 6, the grain discharging device A has a carry-out screw 12 (see FIG. 1) for carrying out the grains stored in the grain tank 11 to the outside of the tank, and a grain carried out by the carry-out screw 12. Is conveyed upward and discharged from the grain outlet 13A formed at the upper end thereof, and the grain discharged from the grain outlet 13A is flowed down and guided to the right outside of the machine body by its own weight. A discharge chute 14 is provided.

The grain outlet 13 </ b> A is formed at a position higher than the upper surface of the grain tank 11.
The grain tank 11 includes a plurality of sheet metal tank panels 15 having connecting flanges 15 a on the outer peripheral portion, and the adjacent flanges 15 a are connected to each other by bolts. Has fixed the illuminating lamp 16 that illuminates the rear side of the fuselage.
The illuminating lamp 16 is fastened and fixed together with a connecting bolt that connects the flanges 15a.

The lifting conveyor 13 includes a cylindrical conveyor case 17 with a cylindrical axis X extending in the vertical direction, a lid 17a that closes the upper end of the conveyor case 17, and a lifting screw that is rotatably provided inside the conveyor case 17. It is comprised in the screw conveyance type which has 18 grade | etc.,.
The upper part of the lifting screw 18 is equipped with a discharge plate 18a that rotates integrally with the lifting screw 18 to discharge the grain that has been lifted up to the upper part of the lifting conveyor 13 from the grain outlet 13A in the horizontal direction. ing.

At the upper part of the conveyor case 17, a discharge guide 19 that guides the grains discharged from the grain discharge port 13 </ b> A formed on the right side portion thereof toward the lower right outside of the conveyor case 17 is detachably bolted. Yes. Then, the grain guided by the discharge guide 19 can be guided down to a predetermined grain discharge location such as a truck bed located at the lower right outside of the machine body at a position directly below the discharge guide 19 in the conveyor case 17. A discharge chute 14 is provided.
The conveyor case 17 is supported at a predetermined position on the upper and lower intermediate sides thereof by a support column 1 a erected on the right rear end of the machine body frame 1.

The discharge chute 14 moves up and down around the first horizontal axis Y1 via the horizontal support shaft 14a at the upper end of the conveyor 13, that is, above the conveyor case 17 and below the grain discharge port 13A. It is supported so as to be swingable in the direction.
The discharge chute 14 includes an upper chute portion 14A constituting the upper side of the grain guiding direction and a lower chute portion 14B constituting the lower side of the grain guiding direction.

  14 A of upper side chute parts are the right direction side which is the discharge outlet side of the conveyance conveyor 13, and are the rightward attitude | position which the bottom plate 14b faces to the right side part, and the state which can be rock | fluctuated up and down using the sideways support shaft 14a as a fulcrum. Have deployed.

  The lower chute portion 14B is connected to the upper chute portion 14A by connecting one end portion of each side plate 14c to the free end portion of each side plate 14c in the upper chute portion 14A laterally via a pair of support shafts 14d. On the other hand, it is configured to be swingable up and down. Then, by a downward swing using a pair of support shafts 14d with respect to the upper chute portion 14A as a fulcrum, the upper chute portion 14A is switched to an action position connected to the lower side of the grain guiding direction and the upper chute portion 14A As a result of the upward swing using the pair of support shafts 14d as fulcrums, the upper chute portion 14A is switched from the upper position to the non-operating position so as to be fitted over.

  That is, by the folding operation of the discharge chute 14 that switches the lower chute portion 14B between the action position and the non-action position, the grain discharge length of the discharge chute 14 is changed to the length in the grain guide direction of the upper chute portion 14A. Changed into two stages: a short state to be set, and a long state to be set to a length obtained by adding the length in the grain guiding direction of the lower chute part 14B to the length in the grain guiding direction of the upper chute part 14A It is possible.

The discharge chute 14 includes a lock mechanism 14D that holds the lower chute 14B in the non-acting position.
The upper chute 14A is moved to the working position of the lower chute 14B by receiving the upper end of the lower chute 14B in the grain guiding direction, thereby moving the lower chute 14B to the working position. A stopper (not shown) is provided for holding. Then, by receiving the lower chute 14B with this stopper, the lower chute 14B is stably maintained in line with the upper chute 14A at the operating position.

  The grain discharging apparatus A includes a resin cover body 20 that covers the upper side, which is the upper side of the discharging chute 14 from the upper side of the conveying conveyor 13 to the discharging chute 14, from the upper side so as to be swingable up and down. ing.

As shown in FIGS. 4 to 8, the grain discharging device A engages the discharge chute 14 that swings up and down around the first horizontal axis Y1 with the horizontal support shaft 14a as a fulcrum at an arbitrary inclination angle. A lock mechanism (corresponding to a holding mechanism) B for adjusting the chute angle to be held is provided.
The lock mechanism B is provided across the discharge chute 14 and the transporting conveyor 13, and a second horizontal axis parallel to the first horizontal axis Y1 on the free end side of the bottom plate 14b of the upper chute portion 14A of the discharge chute 14 is provided. A rod-like tension member 21 supported so as to be swingable up and down around the core Y2, and a free end portion of the tension member 21 provided at the conveyor case 17 of the lifting conveyor 13 at a position lower than the second horizontal axis core Y2. An engaging member 26 that constitutes an engaging portion 22 that can engage and disengage 21a, and a torsion spring 23 that urges the projecting member 21 to swing upward toward the engaging portion 22; Yes.

The engaging portion 22 includes a plurality of (three in the present embodiment) engaging grooves 24 having different height positions, and an engaging protrusion 21 a that forms a free end portion of the tension member 21. A series of guide grooves 25 that can be guided so as to be engaged with each other are provided in series, and the guide grooves 25 extend upward beyond a communication point with the uppermost engagement groove 24a.
Each engagement groove 24 is formed so as to extend in the longitudinal direction (extension direction) of the tension member 21 in a state where the engagement protrusion 21 a of the tension member 21 is engaged.

As shown in FIGS. 7 and 8, the engaging member 26 constituting the engaging portion 22 includes a groove plate portion 26a in which each engaging groove 24 and a guide groove 25 are formed in series, and the plate surface is a groove. Three auxiliary plate portions 26b extending in a direction perpendicular to the plate surface of the plate portion 26a are integrally provided, and the groove plate portion 26a and the auxiliary plate portion 26b are integrally formed with the cylindrical axis X Is welded and fixed to the outer surface of the conveyor case 17.
The auxiliary plate portion 26b is provided integrally with the groove plate portion 26a by cutting and raising an edge portion along the cylindrical axis X of the groove plate portion 26a.
In addition, the groove plate part 26a and the auxiliary plate part 26b may be provided integrally in a posture that intersects each other at an acute angle or an obtuse angle other than a right angle.

The tension member 21 includes an operation arm 21b for disengaging operation on the free end portion 21a side, and includes an engagement protrusion 21a that selectively engages with each engagement groove 24 of the engagement portion 22 at its free end. The part is bent.
Then, the engagement state is maintained by selectively engaging the engagement protrusion 21a into one of the engagement grooves 24 by the operation of the tension member 21 by the operation arm 21b and the action of the torsion spring 23. The discharge chute 14 is received and supported at an arbitrary inclination angle, the operation arm 21b is gripped, and the engagement member 21 is engaged with the engagement groove 24 by the swinging operation of the tension member 21 against the urging force of the torsion spring 23. And the support for receiving the discharge chute 14 can be released.
Therefore, the lock mechanism (holding mechanism) B is configured to engage and hold the discharge posture of the discharge chute 14 and to be able to release the discharge posture, and to lift the engagement holding release operation portion B1 in the lock mechanism B. It is provided on the conveyor 13 side.

The grain discharging apparatus A is provided with a gripping mechanism C on the free end side of the discharge chute 14 that can hold the discharge chute 14 in the retracted position along the lifting conveyor 13 and close to the lifting conveyor 16. is there.
The gripping mechanism C includes an engaging cylinder portion 27 provided laterally on the front side of the conveyor case 17 and an elastically deformable gripping tool 28 fixed to the bottom plate 14b of the upper-side chute portion 14A. Then, as the discharge chute 14 reaches the retracted position, the gripping tool 28 is nipped and fitted into the engagement tube portion 27, so that the discharge chute 14 resists the action of the torsion spring 23 provided in the lock mechanism B. It is configured so that it can be fixedly held at the storage position.

  From the above configuration, the posture of the discharge chute 14 is set to the retracted posture in which the discharge chute 14 is held at the retracted position by the gripping mechanism C, and the engagement protrusion 21a of the tension member 21 is engaged with the lowest engagement groove 24. The first discharging posture for discharging the grain with the discharging position of the discharging chute 14 closest to the machine body, and the engaging protrusion 21a is engaged with the engaging groove 24 at the upper and lower intermediate positions to set the discharging position of the discharging chute 14 to the first position. The second discharging posture for discharging the grain separated from the machine body to the right outer side than the one discharging attitude, and the discharging position of the discharging chute 14 by engaging the engaging protrusion 21a in the uppermost engaging groove 24a. Can be changed to the third discharge attitude degree for discharging the grain that is the most separated from.

[Second Embodiment]
9 and 10 show another embodiment of the present invention.
In this embodiment, the discharge chute 14 is provided so as to be extendable and retractable along the grain guide direction, and the grain discharge length of the discharge chute 14 is provided so as to be changeable by the extension operation of the discharge chute 14. This embodiment is different from the first embodiment, and other configurations are the same as those of the first embodiment.

  The discharge chute 14 includes an upper chute portion 14A constituting the upper side of the grain guiding direction and a lower chute portion 14B constituting the lower side of the grain guiding direction. Each chute 14A, 14B is a groove type including a bottom plate 14b and a pair of side plates 14c rising in parallel from the bottom plate 14b, and the lower chute 14B slides in the grain guide direction with respect to the upper chute 14A. It is configured to fit in a movable inscribed state.

  14A of upper side chute parts are the right side which is the discharge outlet side of the conveyance conveyor 13, and are the right direction which the bottom plate 14b faces to the right side part, and the circumference of the 1st horizontal axis Y1 centering on the horizontal support shaft 14a It is deployed in a state that can swing up and down. Further, by bending the upper end portions of the pair of side plates 14c inward, a pair of sliding guide grooves 29 for slidingly guiding the pair of side plates 14c of the lower chute portion 14B in the grain guide direction is formed. . The lower-side chute portion 14B has a shape-retaining upper-side connecting rod 14e and a lower-hand portion that connect upper portions of the upper-side end portion and the lower-side end portion in the grain guiding direction across the pair of side plates 14c. Side connection rod 14f. The lower-side connecting rod 14f can be used as a grip portion when the lower-side chute portion 14B slides with respect to the upper-side chute portion 14A.

  The discharge chute 14 includes a lock mechanism 29 for adjusting the chute length that fixes and holds the lower chute 14B at an arbitrary sliding position with respect to the upper chute 14A. The lock mechanism 29 includes a swing arm 31 that is swingably coupled to a front side end portion of the front side plate 14c of the upper side chute portion 14A via a support shaft 30 facing forward and backward. . The swing arm 31 has a plurality of recesses 31a formed in a saw blade shape at the edge of the discharge chute 14 facing the bottom plate 14b. And these recessed parts 31a selectively engage with the upper-side connecting rod 14e of the lower-side chute 14B, so that the lower-side chute 14B is fixedly held at an arbitrary sliding position with respect to the upper-side chute 14A. It is configured as follows.

  The support shaft 30 is externally equipped with a torsion spring 32 that engages and urges the swing arm 31 toward the upper-side connecting rod 14e of the lower-side chute portion 14B. The free end of the swing arm 31 is welded with an L-shaped operating rod 31A that makes it easy to swing the swing arm 31 in the disengagement direction against the biasing force of the torsion spring 32.

  When the length of the discharge chute 14 is increased, first, the lower chute portion 14B of the lower chute portion 14B and the operating rod 31A of the swing arm 31 are gripped to resist the biasing force of the torsion spring 32. Then, the swing arm 31 is swung in the disengagement direction, and the engagement between the upper side connecting rod 14e of the lower chute portion 14B and the recess 31a of the swing arm 31 is released. Next, after the lower chute 14B is slid to the lower side with respect to the upper chute 14A to the arbitrary sliding position, the sliding position at that time is applied by the biasing force of the torsion spring 32. The recess 31a of the swing arm 31 corresponding to is engaged with the upper-side connecting rod 14e of the lower-side chute portion 14B.

On the other hand, when the length of the discharge chute 14 is shortened, the lower chute 14f of the lower chute 14B is gripped against the upper chute 14A against the biasing force of the torsion spring 32. Then, the lower chute 14B is slid to the upper side in the grain guiding direction to an arbitrary sliding position, and then the urging force of the torsion spring 32 causes the recess 31a of the swing arm 31 corresponding to the sliding position at that time. Is engaged with the upper-side connecting rod 14e of the lower-side chute portion 14B.
Thereby, the grain discharge length of the discharge chute 14 can be easily adjusted to an arbitrary length.

[Third Embodiment]
11 and 12 show another embodiment of the present invention.
In this embodiment, the structure of the holding mechanism B provided across the discharge chute 14 and the transporting conveyor 13 is different from the holding mechanism B shown in the first embodiment, and the other structure is the same as that of the first embodiment. It is the same.

  The holding mechanism B in the present embodiment is fixed to the discharge chute 14 and is supported rotatably on the conveyor case 17 by a rotation operation arm 34 on an arcuate gear member 33 centered on the first horizontal axis Y1. A gear 35 that meshes with the gear member 33, and a disc spring 36 that is mounted between the gear 35 and the conveyor case 17 in a compressed and deformed state.

The discharge chute 14 is supported so as to be swingable by the rotation operation of the gear 35 in the forward and reverse directions by the rotation operation arm 34 against the frictional force caused by the biasing force of the disc spring 36.
The discharge chute 14 is held in a desired discharge posture by the frictional force generated by the biasing force of the disc spring 36, and the gear 35 by the rotary operation arm 34 resists the frictional force generated by the biasing force of the disc spring 36. It is provided so that the release operation can be performed by the rotation operation.
Therefore, the rotation operation arm 34 constitutes a holding release operation part B1 provided on the side of the lifting conveyor 13 in the holding mechanism B.
The rotation operation arm 34 constituting the holding release operation unit B1 may be provided on the front side of the discharge chute 14 or on the rear side of the discharge chute 14.

[Fourth Embodiment]
FIG. 13 shows another embodiment of the present invention.
In this embodiment, the structure of the holding mechanism B provided across the discharge chute 14 and the transporting conveyor 13 is different from the holding mechanism B shown in the first embodiment, and the other structure is the same as that of the first embodiment. It is the same.

  The holding mechanism B in the present embodiment is configured such that an elastic urging member 37 such as a coil spring that urges the discharge chute 14 to swing upward, and the discharge chute 14 against the urging force of the urging member 37. And a reel device 38 capable of winding and unwinding a wire 38a that swings toward the 17 side.

The reel device 38 is provided with a stopper (not shown) capable of stopping the feeding of the wire 38a and a winding operation arm 34 for winding the wire 38a, and the feeding of the wire 38a fed by the biasing force of the biasing member 37. , The discharge chute 14 is held in a desired discharge posture, and the discharge posture can be released by the winding operation of the wire 38 a by the rotary operation arm 34 that resists the biasing force of the biasing member 37. It is provided.
Therefore, the rotation operation arm 34 constitutes a holding release operation part B1 provided on the side of the lifting conveyor 13 in the holding mechanism B.
The rotation operation arm 34 constituting the holding release operation unit B1 may be provided on the front side of the discharge chute 14 or on the rear side of the discharge chute 14.

[Other Embodiments]
1. The grain discharging apparatus according to the present invention may be provided in a whole-pile-type combine that puts the whole harvested cereal meal into the threshing apparatus.

  The combine grain discharging apparatus according to the present invention can be used for various combine grain discharging apparatuses such as a self-removal type and a whole bowl charging type.

DESCRIPTION OF SYMBOLS 11 Grain tank 13 Lifting conveyor 13A Grain discharge port 14 Discharge chute 17 Conveyor case 21 Strut member 21a Free end part 22 Engagement part 24 Engagement groove 24a Topmost engagement groove 25 Guide groove 26a Groove plate part 26b Auxiliary Plate part B Holding mechanism B1 Holding release operation part C Holding mechanism X Cylindrical axis Y1 First horizontal axis Y2 Second horizontal axis

Claims (10)

A lifting conveyor that conveys the grain stored in the grain tank upward;
The upper part of the lifting conveyor is supported so as to be swingable around the first horizontal axis, and the grains discharged from the grain outlet formed at the upper end of the lifting conveyor are removed from the machine body by its own weight. A discharge chute to guide the
A holding mechanism which is provided across the discharge chute and the transporting conveyor, holds the discharge posture of the discharge chute and is configured to be operable to release the discharge posture;
The grain outlet is formed at a position higher than the upper surface of the grain tank;
A combine grain discharging apparatus in which a holding release operation section in the holding mechanism is provided on the side of the lifting conveyor.   The holding mechanism is supported on the discharge chute so as to be swingable around the second horizontal axis, and is provided on the transporting conveyor, and is provided at a position lower than the second horizontal axis. 2. The combine grain discharging apparatus according to claim 1, further comprising an engaging part capable of engaging and disengaging the free end part.   The combine grain discharging apparatus according to claim 2, wherein the tension member is swingably supported on the swing end side of the discharge chute.   The engaging portion is a series of a plurality of engaging grooves having different height positions and a guide groove that can be guided to engage the free end portion with any of the engaging grooves. The combine grain discharging apparatus according to claim 2 or 3.   The combine grain discharging apparatus according to claim 4, wherein the guide groove extends upward beyond a communication portion with the uppermost engaging groove. The conveyor case of the lifting conveyor is formed in a cylindrical shape with a cylindrical axis along the vertical direction,
The engaging portion includes a groove plate portion in which the engagement groove and the guide groove are formed in series, and an auxiliary plate portion along a direction in which the plate surface intersects the plate surface of the groove plate portion. Have one,
The combine grain discharging apparatus according to claim 4 or 5, wherein the groove plate portion and the auxiliary plate portion are fixed to the conveyor case in such a manner that their plate surfaces are along the cylindrical axis.   The combine grain discharging apparatus according to claim 6, wherein an edge portion along the cylindrical axis of the groove plate portion is cut and raised, and the auxiliary plate portion integrated with the groove plate portion is provided.   The combine grain discharging apparatus according to any one of claims 1 to 7, wherein a gripping mechanism capable of gripping the discharge chute in a posture along the transporting conveyor is provided on a free end side of the discharge chute.   The combine grain discharging apparatus according to any one of claims 1 to 8, wherein a grain discharging length of the discharge chute is provided to be changeable by a folding operation of the discharge chute.   The combine grain discharging apparatus according to any one of claims 1 to 8, wherein a grain discharging length of the discharge chute is provided so as to be changeable by an expansion and contraction operation of the discharge chute.

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