JP2002112622A - Extensible and contractible cereal grain-conveying unit of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the catch of grains with branches and stems, straw dust, etc., caught at each of conveying screw plates of each transferring and conveying screw installed in a transferring and conveying pipe. SOLUTION: This cereal grain-conveying unit is provided by installing a notched part 36e having a sweepback angle (α) at the starting end part of conveyance of each of the conveying screw plate 36c of the transferring and conveying screws 10, 11, 12 installed as freely extensible and contractible, in the transferring and conveying pipe 13 for conveying the cereal grains as relaying from a fixed conveying screw of a fixed conveying pipe, setting a gap (L) between the inner diameter part of the transferring and conveying pipe 13 and the base part of each of he conveying screw plates having the sweepback angle (α) as approximately >=20 mm or in the vicinity of approximately 30 mm, and also installing the notched part 36e having a sweepback angle (α) at the final end part of conveyance of the conveying screw plates 36c of the transferring and conveying screw 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable transfer cylinder for transferring a grain from a fixed transfer spiral of a fixed transfer cylinder. It is a technology that provides a unit, and can be used as an elastic grain transfer device for combine harvesters.

[0002]

2. Description of the Related Art For example, in the harvesting work of pied cereal culm using a combine, the harvested culm harvested by the combine reaper is supplied to a threshing machine and threshed. It is supplied into the grain tank and temporarily stored.

When discharging the stored grains to the outside of the machine, the supply of the grains from the vertical transfer cylinder is received by a telescopic grain transfer device, and the fixed transfer provided inside the fixing transfer cylinder of the telescopic grain transfer device is used. The transfer spirals are transferred by being transferred by a spiral, and further inserted into the outer peripheral portion of the fixed transfer cylinder, and each of the transfer spirals supported by a movable spiral shaft housed in a movable transfer cylinder that can be extended and retracted by a telescopic device. The grains are successively transferred from the fixed transfer spiral by the plate and transferred, and are discharged out of the machine through a discharge opening at a lower part of a discharge tube provided at a distal end portion of the transfer transfer tube.

[0004] At the time of the above-described grain discharge, each of the moving transfer spirals and the moving transfer cylinder is extended and moved to a predetermined length position by a telescopic device, and is rotated to a predetermined position and moved to a predetermined height. The grain is lifted to the position and the grains are discharged out of the machine.

[0005]

When a grain is transferred by each transfer spiral plate of each movable transfer spiral in a telescopic movable transfer cylinder for transferring a grain from a fixed transfer spiral in a fixed transfer cylinder. In addition, when the grains are discharged at a low rotation speed in each of the moving and transferring spirals, spike sticking particles and straw chips mixed in the grains may be caught at the transfer start end of each of the transferring spiral plates. The transfer passage for grain may be blocked, and the inside of the transfer tube for transfer may be clogged, and the grain may not be transferred, or the transfer transfer tube and the transfer transfer spiral may be damaged due to this clogging. However, the present invention seeks to solve these problems.

[0006]

For this purpose, according to the present invention, there is provided the present invention according to the first aspect, wherein a fixed transfer cylinder 8 internally provided with a fixed transfer spiral 7 for receiving and transferring grain supply.
And a plurality of movable transfer spirals 10, 11, and 12 supported by a telescopic device 14 so as to be extendable and retractable on a movable spiral shaft 9. In the combine provided with the transfer cylinder 13, a notch portion 36e having a receding angle (α) is provided at the transfer start end of each transfer spiral plate 36c of the moving transfer spirals 10, 11, and 12. This is an elastic grain transfer device.

According to the second aspect of the present invention, the inner diameter portion (d) of the transfer cylinder 13 and the movement spirals 10, 1
A gap (L) between the base (e) of the receding angle (α) provided at the transfer start end of each of the transfer spiral plates 36c of Nos. 1 and 12 is provided to be approximately 20 mm or more, or approximately 30 mm. The elastic grain transfer device for a combine according to claim 1.

According to the third aspect of the present invention, at least the transfer start end and the transfer end of the transfer spiral plate 36c of the movable transfer spiral 12, among the movable transfer spirals 10, 11, and 12, are set backward angles (α). 3. The apparatus according to claim 1, wherein the notch 36e is provided.

[0009]

According to the present invention, the harvesting operation of the pilgrim culm using the combine is performed by supplying the harvested culm harvested by the combine reaper to the threshing machine and threshing, and the threshed and sorted kernel is stored in the grain storage tank. It is supplied inside and temporarily stored.

When discharging the stored grains to the outside of the machine, the grains are received from the vertical transfer cylinder by the telescopic grain transfer device, and the fixed transfer spiral provided inside the fixing transfer cylinder 8 of the telescopic grain transfer device. 7, each of the moving transfer spirals 10, which is inserted into the outer peripheral portion of the fixing transfer tube 8 and supported by the moving spiral shaft 9 provided in the movable transfer tube 13 which can be extended and contracted by the expansion and contraction device 14. The grains are successively transferred from the fixed transfer spiral 7 and transferred by the respective transfer spiral plates 36 c of 11 and 12, and are discharged from the lower discharge port provided at the distal end of the transfer cylinder 13 to the outside of the machine. Is discharged.

Each transfer spiral plate 36 of each of the transfer transfer spirals 10, 11 and 12 provided in the transfer transfer cylinder 13 for transferring and transferring the grains from the fixed transfer spiral 7 of the fixing transfer cylinder 8.
c is provided with a cut-out portion 36e having a receding angle (α) at the transfer start end in order to prevent the sticking of branch stalks and straw chips mixed in the transferred grains. The transfer spiral plate 36c of the transfer spiral 12 is provided with a cut-out portion 36e having a receding angle (α) at the end of the transfer, and the transfer tube 1 for transfer.
A gap (L) between the inner diameter portion (2) of No. 3 and the base portion (E) of the receding angle (α) is set to a gap (L) of about 20 mm or more or about 30 mm, and each of these transfer spirals is provided. Plate 3
At 6c, it is transferred and discharged outside the machine.

At the time of discharging the above-mentioned grain, each of the movable transfer spirals 10, 11, 12 and the movable transfer cylinder 13 is extended and retracted to a predetermined length position by an expansion and contraction device 14, and is moved to a predetermined position. The grains are rotated and moved up to a predetermined height position, and the grains are discharged out of the machine.

[0013]

According to the first aspect of the present invention, the moving transfer spirals 10, 11, 12 provided inside the moving transfer cylinder 13 are provided.
A notch 36e having a receding angle (α) is provided at the transfer start end of each transfer spiral plate 36c, so that the branches mixed in the grains to be transferred are provided at the transfer start end of each transfer spiral plate 36c. Stem-attached particles, straw chips, and the like are not caught, and the inside of the transfer tube 13 can be prevented from being blocked by the branch-attached particles, straw particles, and the like.
3, and breakage of the transfer spirals 10, 11, 12 can be prevented.

According to the second aspect of the present invention, the inner diameter portion (d) of the transfer cylinder 13 and the movable transfer cylinders 10, 1
A cut-out portion 36e having a receding angle (α) is provided in each of the transfer spiral plates 36c of Nos. 1 and 12;
If the gap (L) is not at least about 20 mm or more, the effect of preventing the attachment of branch streak attached grains and straw chips is small, and the gap (L) near about 30 mm Has the largest effect of preventing catching, and if the gap (L) is made to be a very wide gap (L) from about 30 mm or more, the effect of catching is sufficient, but the grain at the transfer start end is sufficiently large. The takeover may be poor and the takeover performance of the grain may be reduced.

According to the third aspect of the present invention, the transfer spiral plate 36c of the movable transfer spiral 12 which is mounted in the middle of the transfer cylinder 13 for transfer is mounted on both sides of the transfer start end and transfer end of the transfer spiral plate 36c. By providing the cutout portion (36c) having the receding angle (α), the movable transfer spiral 12 can be assembled in any direction, so that incorrect assembly can be prevented.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A vertical transfer cylinder 6 equipped with a vertical transfer spiral 6a as a discharge device for discharging the grains stored in a grain storage tank 4 mounted on the right side of a threshing machine 3 mounted on the upper side of a traveling platform 2 of the combine 1 outside the machine. A fixed transfer cylinder 8 having a fixed transfer spiral 7 inside, a front and rear both sides of a movable spiral shaft 9 that can be extended and retracted by an extension device 14, and an intermediate portion are provided above the vertical transfer cylinder 6. The transfer spirals 11, 10,
12 shows a telescopic grain transfer device 5 including a transfer tube 13 and the like inserted into the outer periphery of the fixed transfer tube 8, and a transfer spiral plate for each of the transfer spirals 11, 10, and 12. The cut-out portion 36e of the receding angle (α) provided at the transfer start end portion 36c will be described with reference to the drawings.

A traveling device 15 having a pair of left and right traveling crawlers 15a for traveling on a soil surface is disposed below the traveling chassis 2 of the combine 1 as shown in FIG. Is a configuration in which the threshing machine 3 is mounted. The reaping culm is cut by the reaper 16 on the front side of the traveling chassis 2, and the reaping culm is transferred by the reaper 16, and is taken and held by the feed chain 3 a and the holding rod 3 b of the threshing machine 3 for threshing. The grain storage tank 4 for collecting and temporarily storing the grain that has been threshed and sorted is mounted on the right side of the threshing machine 3.

At the front of the traveling platform 2 at the front of the threshing machine 3, as shown in FIG. 17, a narrow guide 17a and a weeding body 17b for separating the raised culm from the front end position, and the separated grain culm are attached. A raising device 18a for raising, a raking and transferring device 19a for raking and transferring the raised grain, a cutting blade device 18b for mowing the raked culm, and a threshing machine 3 for transporting the harvested cereal culm. The reaper 16 provided with a grain culm transfer device 19b for transferring the feed chain 3a and the holding rod 3b to and from the feed chain 3a is configured to be able to move up and down on the soil surface by a telescopic cylinder 16a driven by hydraulic pressure.

On the threshing machine 3 side, as shown in FIG. 17, an operating device 20a for starting, stopping and adjusting each part of the combine 1, and a cockpit 20b on which a worker who performs these operations is boarded. An engine 20c is mounted below the cockpit 20b and above the traveling chassis 2, and a grain storage tank 4 is disposed behind the engine 20c. The traveling device 15, the threshing machine 3, the reaper 16, the engine 20 c, and the like constitute the body 1 a of the combine 1.

In the culm transfer path formed by the cereal culm transfer device 19b of the mowing machine 16, the culm is supplied to the threshing machine 3 by contacting the culm conveyed to be cut and transferred. This is a configuration provided with a cereal stalk sensor 16b for detecting stalk. A vehicle speed sensor 21b for detecting a traveling vehicle speed based on the output rotation speed is provided in a transmission path of a traveling transmission case 21a mounted on a front end portion of the traveling chassis 2.

At the bottom of the grain storage tank 4, a back and forth transfer spiral 4a for transferring the stored grains to the rear is provided in the front and rear direction, and the grains transferred to the rear are taken over, and the joint case 6b is taken over. The vertical transfer cylinder 6 in which a vertical transfer spiral 6a that changes the direction via the inside is provided rotatably in a substantially vertical posture, above the joint case 6b and behind the grain storage tank 4.

At the upper end of the vertical transfer cylinder 6, with the upper end serving as a fulcrum, the entire length of the vertical transfer cylinder 6 can be extended and contracted over the front and rear lengths of the combine 1, and can be freely turned up and down and swiveled to discharge grains outside the machine. This is a configuration in which a grain transfer device 5 is provided. Various switches mainly operating the elastic grain transfer device 5 as shown in FIG.
And various operation levers and the like are illustrated and described. An auger lever 22a for vertically operating and retracting the elastic grain transfer device 5 and a left and right turning operation are provided, and a paddy discharge lever 22b for transmitting the power of the engine 20c to the expandable grain transfer device 5 is provided. By operating to the discharge position, the grains in the grain storage tank 4 can be discharged outside the machine.

An ON-OFF switch type stop switch 23a operated when stopping the telescopic grain transfer device 5 and the like, and an ON-OFF operation operated when turning.
A switch-type turning switch 23b, an ON-OFF switch-type ramp switch 23c, and an ON-OFF switching-type expansion / contraction switch 23d operated when extending or contracting the moving transfer cylinder 13, which will be described in detail later.
Is provided.

In the vicinity of the lateral side of the auger lever 22a,
A holding device 24 for receiving and holding a superposed portion of the transfer tube 13 for movement of the telescopic grain transfer device 5 and the transfer tube 8 for fixing is provided.
The holding device 24 has a configuration in which an inverted mountain-shaped receiving plate 24b is fixedly provided at the upper end of the main column 24a.

The holding device 24 has an ON-OFF for detecting the shortest position of the transfer cylinder 13 as shown in FIG.
A switch type storage sensor 25 is provided to regulate the shortest state of the transfer cylinder 13. The control device 26 of the operation device 20a includes various levers 22a and 22b and various switches 23a and 23b, as shown in FIG.
The operation of 23c and 23d, the detection of the storage sensor 25, and the like are input from the input circuit 26a to the CPU 26b. Based on these inputs, the forward and backward spirals 4 in the grain storage tank 4 from the CPU 26b via the output circuit 26c.
a, a vertical transfer spiral 6 b in the vertical transfer cylinder 6, a fixed transfer spiral 7 of the telescopic grain transfer device 5, each movable transfer spiral 10, 11, 12 of the movable spiral shaft 9, and a tip spiral plate moving backward. 27 and the like are driven to rotate. In addition, the forward / reverse rotation of the moving motor 28 controls the expansion / contraction of the moving transfer cylinder 13 and the moving spiral shaft 9, and the working light 29 is turned on.

The telescopic grain transfer device 5 is shown in FIGS.
As shown in FIG. 17 and FIG. 17, the fixing transfer tube 8 mounted on the joint metal 30, the movable transfer tube 13 which is inserted into the outer peripheral portion (b) of the fixing transfer tube 8, And a storage sensor 25 for detecting the shortest position of the transfer cylinder 13.

As shown in FIG. 8, the fixed transfer cylinder 8 is provided with a fixed transfer spiral 7 therein, and the fixed transfer spiral 7 is provided by fixing a fixed spiral plate 31 a to an outer peripheral portion of a fixed spiral shaft 31. Configuration. The inner diameter portion of the fixed spiral shaft 31 forms a circular insertion hole 31b, and the insertion hole 3b of the inner diameter of the transfer end portion of the fixed spiral shaft 31 has the insertion hole 3b.
In this configuration, a hexagonal insertion hole 32a for supporting the outer peripheral portion (a) of the moving spiral shaft 9 which is smaller in diameter than the movable spiral shaft 9a is fixedly provided on the inner diameter portion.

As shown in FIG. 8, an outer boss 30 of the joint metal 30 is connected to an outer peripheral portion (b) of the fixing transfer tube 8.
a bearing 30 provided on the inner diameter of the inner boss 30b of the joint metal 30.
The configuration is such that the outer diameter portion of the auxiliary shaft 32 is inserted into and supported by the inner diameter portion of c. The rear support shaft 31c provided at the shaft end of the transfer start end of the fixed spiral shaft 31 is configured to be inserted and supported by a receiving metal 33a provided inside a takeover metal 33 provided at the upper end of the vertical transfer cylinder 6.

The outer boss 30a of the joint metal 30 is formed in a circular shape as shown in FIG. 8, and the outer boss 30a and the outer peripheral portion (b) of the fixing transfer cylinder 8 are transferred from the transfer start end. An inner peripheral portion of the transfer cylinder 13 for moving the outer peripheral portion of the cylindrical outer metal 34 fixedly provided at a predetermined distance position is configured to be slidable back and forth by the telescopic device 14 which moves backward in detail. .

FIGS. 1 to 1 show the inside of the transfer cylinder 13.
As shown in FIG. 4, a movable helical shaft 9 having a hexagonal outer diameter and a hollow or solid inner diameter is provided inside, and the outer peripheral portion of the movable helical shaft 9 has a hexagonal outer end at a transfer start end side. This is a configuration in which a receiving bush 9a having a shape is inserted and fixed.

The front support shaft 9b provided at the tip of the moving spiral shaft 9 is inserted into and supported by a support metal 35a provided on the inner surface of the discharge tube 35 mounted on the front end of the transfer tube 13. The intermediate portion is pivotally supported by the insertion hole 32a of the auxiliary shaft 32, and the rear shaft end is formed by connecting the outer peripheral portion of the receiving bush 9a provided on the shaft end to the insertion hole 31 of the fixed spiral shaft 31.
This is a configuration supported by b. The movable helical shaft 9 is configured to be slidable back and forth by a telescopic device 14.

The transfer spirals 11 and 10 supported by the transfer start end of the transfer spiral shaft 9 housed in the transfer cylinder 13 and the vicinity of the transfer end, and the transfer spirals 11 and 1 are supported.
In this configuration, a plurality of movable transfer spirals 12 that are pivotally supported between 0 and 0 are provided inside. Each of the moving transfer spirals 12 is configured to be able to expand and contract.

The moving transfer spiral 10 is shown in FIGS.
And the moving helical shaft 9 in front of the auxiliary shaft 32 as shown in FIG.
The movable transfer spiral 10 has a hexagonal inner diameter and a circular outer diameter formed on the outer peripheral portion of the rear fixed boss 36. The connecting portion 36b has a belt-like shape, one end of which protrudes to one side.
And a supporting plate 36a having the connecting portion 36b side protruding outward is fixedly provided. The supporting plate 36a and the rear fixing boss 36 are provided with a transfer spiral plate 3 having a predetermined length.
6c is fixedly provided. In this configuration, the rear fixing boss 36 of the movable transfer spiral 10 is fastened and fixed to the movable spiral shaft 9 by a bolt 36d. A notch 36e formed at a receding angle (α) is provided at the end of the transfer spiral plate 36c on the transfer start end side of the transfer spiral plate 36c as shown in FIG. 36c to prevent the attachment of branch studs and straw chips mixed in the transfer grain hooked to the transfer start end of the transfer cylinder 36c.
This is a configuration in which clogging in the inside 3 is prevented to improve the grain transfer performance.

The moving transfer spiral 11 is shown in FIGS.
As shown in FIG. 12, a band-like connecting portion 37b is provided on the outer peripheral portion of the front fixing boss 37 having a hexagonal inner diameter and a circular outer diameter, and one end of the front fixing boss 37 projects to one side. A support plate 37a whose side protrudes outward is fixedly provided, and a transfer spiral plate 36c of a predetermined length is fixedly provided between the support plate 37a and the front fixed boss 37. In this configuration, the front fixed boss 37 of the movable transfer spiral 11 is supported by the movable spiral shaft 9 and fastened and fixed to the movable spiral shaft 9 with a bolt 36d. This moving moving spiral 1
A notch 36 formed at a receding angle (α) as shown in FIG.
e, the notch 36e is used to prevent the attachment of branch studs adhering to the transfer kernel hooked to the transfer start end of the transfer spiral plate 36c, the straw chips, and the like. This is a configuration that prevents clogging in the inside and improves the grain transfer performance.

As shown in FIGS. 1 to 7, the movable transfer spiral 12 has a hexagonal inner diameter and a circular outer diameter formed on the outer peripheral portion of the middle moving boss 38. 38
b and 38b, and a support plate 38a having both ends protruding outward is fixedly provided. The support plate 38a and the middle moving boss 38 are provided with a transfer spiral plate 36 having a predetermined length.
In this configuration, c is fixedly provided. This moving transfer spiral 12
Has a configuration in which a plurality of movable spirals 10 and 11 are inserted into a movable spiral shaft 9 so as to be freely expandable and axially supported.

At the time of extension of the moving transfer spiral 12, FIG.
As shown in FIG. 7, the connecting portions 38b and 38b extend to each other until they are connected. Further, at the time of contraction, as shown in FIG. 5, it is configured to contract until the middle transfer bosses 38 come into contact with each other. When the moving transfer spiral 12 is extended, the support plates 38a,
In this configuration, the connecting portions 38b and 38b of the moving transfer spiral 11 extend to the connecting portions 36b of the support plate 36a of the moving transfer spiral 11 and the connecting portions 37b of the support plate 37a of the moving transfer spiral 10 on both front and rear sides. Also, when contracted, the middle transfer bosses 38, 38 of the move transfer spirals 12, 12 and the move transfer spiral 1
In this configuration, the rear fixed boss 36 and the front fixed boss 37 of the moving transfer spiral 11 contract until they come into contact with each other.

As shown in FIGS. 1 to 7, the transfer spiral plate 36c of the moving transfer spiral 12 has a receding angle (α) between an end on the transfer start end side and an end on the transfer end end side. The notch 36e is provided to prevent the sticking of the spike sticking particles and the straw chips mixed in the transfer kernels caught in the transfer start end of the transfer spiral plate 36c, and for the transfer. This is a configuration in which clogging in the transfer cylinder 13 is prevented to improve the transfer performance of the grain. Similarly, the notch 36e formed at the receding angle (α) is provided at the end of the transfer, so that when the movable transfer spiral 12 is assembled, the directionality is lost. This is a configuration in which no attachment is performed.

A notch 36e of a retreat angle (α) of each of the transfer spiral plates 36c of the movable transfer spirals 10, 11, and 12 is provided.
And the transfer cylinder 13 are configured as shown in FIG. 1 and FIG. Inner diameter of transfer cylinder 13 (d)
A gap (L) between the transfer spiral plate 36c and a base portion (e) of the retreat angle (α) provided with a cutout portion 36e formed by the retreat angle (α) is approximately 20 mm or more, or approximately 3
This is a configuration formed and provided near 0 mm.

The gap (L) is at least about 20 m.
If it is not formed more than m, the effect of preventing the sticking of the branch branch attached particles and the straw chips, etc. is reduced. Also, gap (L)
Is formed in the vicinity of about 30 mm, which is the configuration having the greatest effect of preventing the sticking of the branch stalks and straw chips. Further, if the gap (L) is widened widely, there is an effect of preventing catching, but the transfer of the grain at the transfer start end portion is deteriorated, and the transfer performance of the grain may be reduced.

As shown in FIG. 11, a tip spiral plate 27 is fixed between the front side of the movable transfer spiral 11 and the rear side plate 35c of the discharge cylinder 35 at the outer peripheral portion (a) of the movable spiral shaft 9. It is a configuration provided. The reinforcing pin 27a fixed to the moving spiral shaft 9 is fixed to the transfer end of the tip spiral plate 27. By changing the total length of the tip spiral plate 27, when the front and rear length of the discharge tube 35 is changed according to the size (model and model) of the machine, it can be handled by changing the total length of the tip spiral plate 27. Configuration. A notch 3 formed at a receding angle (α) is formed at the end of the tip spiral plate 27 on the transfer start end side.
6e.

The discharge tube 35 on the front side of the transfer tube 13
A work lamp 29 is provided on the upper part of the front end of the work as shown in FIG. The lower part of the discharge tube 35 is provided with a discharge port 35b for discharging grains. The grains supplied from the vertical transfer cylinder 6 into the fixing transfer cylinder 8 are sequentially transferred by the fixed transfer spiral 7, the movable transfer spiral 10, the respective movable transfer spirals 12, the movable transfer spiral 11, and the tip spiral plate 27. ,
It is configured to be discharged out of the machine from the discharge port 35b of the discharge cylinder 35. The transfer start ends of the moving transfer spirals 10 and 11 and the tip spiral plate 27 may not be provided with the notch 37e formed with the receding angle (α).

A transfer support metal 41 having a screw hole at the center as shown in FIG. 10 is provided at the outer periphery of the transfer cylinder 13 at the transfer start end, and at three positions of the outer periphery at the transfer start end. Is provided with a roller device 42 as shown in FIG. 8 and FIG.
The roller 42c is rotatably supported on the support plate 42b provided in the above. The outer peripheral portion of each roller 42c is
The outer peripheral portion of each of the rollers 42c is arranged so as to be in contact with the outer peripheral portion (b) of the fixing transfer tube 8 by the forward and backward sliding movement of the moving transfer tube 13. It is configured to move back and forth rotatably by contacting a part (b).

As shown in FIG. 10, the telescopic device 14 is provided with an inverted L-shaped support plate 39 at the front end of the takeover metal 33, and a motor 28 for movement at the base side of the support plate 39. The receiving portion 40 is provided at the tip. The moving motor 28 has a helical screw 43a
The transfer shaft 43 is provided, and the transfer shaft 43 is screwed into a transfer support metal 41 provided on an outer peripheral portion of the transfer tube 13, and a distal end portion is supported by a receiving metal 40. Reference numeral 44 denotes a circular safety cover.

The transfer tube 1 for movement of the telescopic grain transfer device 5
When the operator 3 is in the predetermined extended position or in the extended state between the most extended position and the position before the most shortened position, and is operated to the most shortened position to bring the holding plate 24b of the holding device 24 into the holding state, turning is performed. By operating the switch 23b and the auger lever 22a to rotate to a predetermined position (original position) and operating the telescopic switch 23d to the contraction side, the control device 26 controls the movement motor 28 to start in reverse rotation. , The telescopic device 14 is rotated in the reverse direction and the transfer cylinder 13
Is a configuration controlled to move to the contraction side.

By operating the telescopic switch 23d to the extension side, the control device 26 controls the movement motor 28 to start rotating in the normal direction, the expansion device 14 is operated in the normal direction, and the transfer cylinder 13 is extended. This is a configuration in which the movement is controlled to the side. When the movement of the transfer tube 13 is controlled to a predetermined position on the contraction side in the superposed state, the transfer tube 13
The detection tool 13a protruding from the outer periphery of the storage device comes into contact with the storage sensor 25 provided on the receiving plate 24b of the holding device 24, and the storage sensor 25 is turned on. Based on this ON state, the control device 26 causes the movement motor 28
Is controlled to stop, and the telescopic device 14 is stopped. With this stop, the transfer cylinder 13 for movement is controlled to stop at a predetermined minimum shortened position. The shortest position is configured to be stopped before the moving transfer tube 13 is completely overlapped with the fixed transfer tube 8.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a moving transfer spiral in an intermediate portion.

FIG. 2 is an enlarged front view of a moving transfer spiral in an intermediate portion.

FIG. 3 is an enlarged side view of a moving transfer spiral portion in an intermediate portion.

FIG. 4 is an enlarged side perspective view of a moving transfer spiral in an intermediate portion.

FIG. 5 is an enlarged side perspective view of the movable transfer spiral in the middle portion in a contracted state.

FIG. 6 is an enlarged side perspective view of the movable transfer spiral in the intermediate portion in an extended state.

FIG. 7 is an enlarged side perspective view of the middle portion of the moving transfer spiral in an extended state.

FIG. 8 is an enlarged sectional side view of a fixed transfer tube and a transfer transfer tube.

9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is an enlarged side view of a telescopic grain transfer device.

FIG. 11 is an enlarged sectional side view of a tip spiral plate portion in the transfer cylinder for movement.

FIG. 12 is an enlarged side sectional view of the telescopic grain transfer device at the time of maximum extension.

FIG. 13 is an enlarged cross-sectional side view of the telescopic grain transfer device during stretching.

FIG. 14 is an enlarged side sectional view of the telescopic grain transfer device at the time of the minimum contraction.

FIG. 15 is an enlarged rear perspective view of the operation device.

FIG. 16 is a block diagram.

FIG. 17 is an overall side view of the combine.

[Explanation of symbols]

 Reference Signs List 7 fixed transfer screw 8 fixed transfer tube 9 moving screw shaft 10 transfer screw 11 transfer screw 12 transfer screw 13 transfer tube 14 telescopic device 36c transfer screw plate 36e notch α receding angle L gap d inner diameter Department E Base

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Masaru Sakai, 1-Yakura, Toze-cho, Toyo-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. In-built (72) Inventor Hidenori Okazaki 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Pref. Iseki Agricultural Machinery Co., Ltd. Technical Term F-term (reference)

Claims (3)

[Claims] 1. A fixed transfer cylinder 8 containing a fixed transfer spiral 7 for receiving and transferring the supply of grains, and a plurality of movable transfers supported by a telescopic movable spiral shaft 9 by a telescopic device 14 so as to be extendable and contractible. Each of the transfer spiral plates 36c of the movable transfer spirals 10, 11, and 12 is provided in a combine having the spirals 10, 11, and 12 provided therein, and a telescopic movable transfer cylinder 13 inserted into the outer peripheral portion of the fixed transfer cylinder 8. Characterized in that a cut-out portion 36e having a receding angle (α) is provided at the transfer start end of the combine. 2. An inner diameter portion (d) of the transfer cylinder 13 and each of the transfer spiral plates 3 of the transfer spirals 10, 11, and 12.
The gap (L) between the base (e) of the sweepback angle (α) provided at the transfer start end of 6c and about 6 mm or more or about 30 mm is provided. Combine telescopic grain transfer device. 3. The transfer spiral plate 36 of at least the movable transfer spiral 12 among the movable transfer spirals 10, 11, 12.
The telescopic grain transfer device of a combine according to claim 1 or 2, wherein a cutout portion (36e) having a receding angle (α) is provided at a transfer start end and a transfer end portion of (c).