JP2001251949A - Grain transfer apparatus for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly engage a pinion for extension and contraction of an extension and contraction device for transferring to be extending and contracting a moving cylinder in which a third transfer spiral is installed with a rack for extension and contraction. SOLUTION: In this grain transfer apparatus for the combine harvester, a first transfer cylinder for fixing 23 in which a first transfer spiral 28 for transferring grains and a transfer cylinder for moving 22 in which a third transfer spiral 30 is installed by inserting into the inner diameter side of a second transfer cylinder for fixing 24 in which a second transfer spiral 29 is installed and bringing to be extending and contracting with an extension and contraction device 47 are installed. A motor 26 for moving the extension and contraction device 47 is installed over a joint metal 39 for connecting the first and second transfer cylinders for fixing 23, 24, while an insertion hole 53 for supporting by inserting the motor shaft 26a of the moving motor 26 and the shaft 50 of a pinion 49 for extension and contraction and a support hole 52 for supporting a rack 51 for extension and contraction engaging with the pinion 49 for extension and contraction are orthogonally installed to the joint metal 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first fixing transfer cylinder containing a first transfer spiral for transferring grains and a second fixing transfer cylinder containing a second transfer spiral inserted into the inner diameter portion of the second fixing transfer cylinder. A transfer cylinder having a third transfer spiral which can be extended and retracted by the telescopic device. The telescopic device is provided above the joint metal connecting the first fixed transfer cylinder and the second fixed transfer cylinder. A moving motor, a motor shaft of the moving motor in the joint metal, an insertion hole for inserting and supporting a telescopic pinion shaft, and a supporting hole for supporting a telescopic rack that meshes with the telescopic pinion. Are arranged perpendicular to each other, and can be used as an elastic grain transfer device for combine harvesters.

[0002]

2. Description of the Related Art For example, when harvesting pilgrim cultivars using a combine, the harvested culm harvested by the combine harvester is supplied to a threshing machine and threshed, and the threshed kernels are stored in a grain storage tank. It is supplied inside and temporarily stored. When discharging the stored grains to the outside of the machine, the grains are supplied from a vertical transfer cylinder provided in the combine and are transferred to a first fixing transfer cylinder on the transfer start end side of the telescopic grain transfer device. From the internal first transfer spiral, the second internal transfer cylinder
After being transferred via the transfer spiral and transferred by the third transfer spiral contained in the transfer tube for transfer, the transfer is carried out and discharged out of the machine.

When discharging to a distant position by this discharging,
The transfer cylinder for transfer and the third transfer spiral of the telescopic grain transfer device are extended and moved by the telescopic device in a superposed state to a predetermined long-distance position, and the telescopic grain transfer device is rotated to a predetermined position. It is moved up and moved up to a predetermined height position and discharged.

At the time of the extension movement, the movement motor of the expansion / contraction device is rotated by the movement of the movement motor mounted on the upper surface of the support plate provided on the outer peripheral portion of the second fixed transfer cylinder. Due to the rotation of the telescopic pinion supported by the shaft, the telescopic rack meshing with the telescopic pinion is extended and moved, and the moving support rod for traveling equipped with the telescopic rack is extended and moved. The transfer cylinder and the third transfer spiral are extended via the support rod, and the grain is discharged to a remote position.

[0005]

The moving motor which supports the telescopic pinion is mounted on a support plate provided on the outer peripheral portion of the second fixed transfer cylinder. In this case, the meshing state between the telescopic pinion and the telescopic rack is deteriorated, and the moving transfer cylinder and the third transfer spiral may not be smoothly expanded and contracted. However, the present invention solves this problem. What you want to do.

[0006]

For this purpose, the present invention provides a first fixed transfer cylinder 23 containing a first transfer spiral 28 for transferring grains and a second fixed transfer cylinder 23 containing a second transfer spiral 29. A combine transfer cylinder 24 provided with a third transfer spiral 30 which is inserted into the inner diameter portion of the second fixed transfer cylinder 24 and is extendable by a telescopic device 47 and is extendable. The first fixing transfer tube 23 and the second fixing transfer tube 24
The expansion device 47 is provided above the joint metal 39 for connecting
And a motor shaft 26a of the moving motor 26 and a pinion 49
An extendable grain transfer of a combine, wherein an insertion hole 53 for inserting and supporting the shaft 50 and a support hole 52 for supporting an extendable rack 51 meshed with the extendable pinion 49 are provided at right angles. The configuration of the device.

[0007]

According to the present invention, when harvesting pilging grain culm using a combine, the harvested grain culm harvested by the combine harvester is supplied to a threshing machine and threshed, and the threshed kernel is put into a grain storage tank. Supplied and temporarily stored. When discharging the stored grains to the outside of the machine, the grains are supplied from a vertical transfer cylinder provided in the combine and the first fixed transfer cylinder 23 on the transfer start end side of the telescopic grain transfer device. From the first transfer spiral 28 provided inside the transfer tube 22 via the second transfer spiral 29 provided inside the second fixed transfer tube 24, and is transferred to the outside by the third transfer spiral 30 provided inside the transfer tube 22. Is done.

When discharging to a distant position by this discharging,
The transfer cylinder 22 and the third transfer spiral 30 of the telescopic grain transfer device are extended and moved by the telescopic device 47 in a superposed state to a predetermined long-distance position, and the telescopic grain transfer device is moved to a predetermined position. And is ejected after being moved up to a predetermined height position.

At the time of the expansion and contraction movement, a moving motor 26 is provided above a joint metal 39 connecting the first fixed transfer tube 23 and the second fixed transfer tube 24, and the joint metal 39 In the insertion hole 53, the motor shaft 26a of the moving motor 26 of the telescopic device 47 and the telescopic pinion 49 shaft 50 for telescopic movement are inserted and axially supported, and by the forward and reverse rotation of the moving motor 26, The expansion / contraction pinion 49 is driven forward / reversely, and the insertion / detachment hole 5 meshed with the expansion / contraction pinion 49 is driven by forward / reverse rotation of the expansion / contraction pinion 49.
Telescopic rack 51 supported by support holes 52 orthogonal to 3
Then, the moving support rod mounted on the telescopic rack 51 is telescopically slidably moved, and in conjunction with the telescopic sliding movement, the moving transfer cylinder 22 and the third transfer spiral 30 are moved to a long distance position or near. The grain is expanded and contracted to the distance position, and the grain is moved from the first transfer spiral 28 of the first fixing transfer cylinder 23 of the expandable grain transfer device to the second
The transfer tube 22 is transferred to the third transfer spiral 30 of the transfer tube 22 extended and moved through the second transfer spiral 29 of the fixing transfer tube 24, and is discharged outside the machine.

[0010]

The telescopic pinion 49 shaft 50 is inserted into an insertion hole 53 provided orthogonally above the joint metal 39 connecting the first fixed transfer tube 23 and the second fixed transfer tube 24. A support hole 52 that supports the shaft and is orthogonal to the insertion hole 53.
The telescopic rack 5 meshed with the telescopic pinion 49
1, the pinion 49 and the rack 51 are reliably engaged with each other, and the transfer cylinder 22
In addition, the third transfer spiral 30 smoothly expands and contracts, and the expansion and contraction device 47 becomes compact.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A telescopic grain transfer device 5, which is a discharge device for discharging the grains stored in a grain storage tank 4 mounted on the right side of the threshing machine 3 mounted on the upper side of the traveling platform 2 of the combine 1, is illustrated and described. .

A traveling device 6 having a pair of left and right traveling crawlers 6a for traveling on the soil surface is disposed below the traveling platform 2 of the combine 1 and above the traveling platform 2.
With the feed chain 3a and the holding rod 3b, the harvested grain culm obtained by cutting the raised grain culm by the reaper 7 is handed over from the reaper 7 to be transported and threshed. This is a configuration in which a threshing machine 3 in which a grain storage tank 4 to be stored is mounted on the right side is mounted.

At the front of the threshing machine 3 and in front of the traveling chassis 2, a narrow guide 8 for separating raised culms from the front end position.
a, a weed body 8b, a raising device 9 for raising the culled culm, and a cutting blade device 1 for cutting the culled culm.
0, and transfer the cut culm to feed chain 3a.
The reaper 7 provided with the grain stalk raking / conveying device 11 and the like that transfers the culm to the holding rod 3b is configured to be able to move up and down on the soil surface by a telescopic cylinder 12 driven by hydraulic pressure.

An operation device 13 for performing various operations of the combine 1 and various adjustment operations is provided on the threshing machine 3 side.
Cockpit 13a on which a worker who performs these operations is boarded
An engine 15 is mounted below the cockpit 13a and above the traveling chassis 2 and a grain storage tank 4 is arranged behind the engine 15. The traveling device 6, the threshing machine 3, the reaper 7, the engine 15, and the like constitute the body 1 a of the combine 1.

In the grain culm transfer path formed by the grain stalk raking and conveying device 11 of the reaper 7, the culm is supplied to the threshing machine 3 by contacting the culm which is cut and transferred. There is provided a grain stalk sensor 16 for detecting the presence or absence of the stalk.
A vehicle speed sensor 17a for detecting a traveling vehicle speed based on the output rotation speed is provided in a transmission path of a traveling mission case 17 mounted on a front end portion of the traveling chassis 2.

At the bottom of the grain storage tank 4, a lateral transfer spiral 4a for feeding the stored grains backward is provided in the front-rear direction, and the transversely fed grains are taken over. A vertical transfer cylinder 19 in which a vertical transfer spiral 19a that changes direction is inserted is provided on the upper side of the joint case 18 and on the rear side of the grain storage tank 4 so as to be rotatable in a substantially vertical posture.

At the upper end of the vertical transfer cylinder 19, with the upper end serving as a fulcrum, the entire length thereof can be extended and contracted, can be turned up and down, and can be swiveled to discharge the grains outside the machine 1 in the longitudinal direction of the combine 1. This is a configuration in which a grain transfer device 5 is provided. Various switches for mainly operating the telescopic grain transfer device 5 as shown in FIG.
And an auger lever 2 for vertically rotating and horizontally rotating the telescopic grain transfer device 5 described and illustrated with various levers and the like.
0a, a rice discharge lever 20b for transmitting the power of the engine 15 to the telescopic grain transfer device 5 is provided, and when the rice discharge lever 20b is operated to the discharge position, the grains in the grain storage tank 4 are discharged. is there.

Further, an ON-OFF switch type stop switch 21a operated when stopping the telescopic grain transfer device 5 and the like, and an ON-OFF operation operated when turning.
Swing switch 21b and ramp switch 21d
And an ON-OFF switching type expansion / contraction switch 21c operated to extend or contract the moving transfer cylinder 22 moving backward.

In the vicinity of the lateral side of the auger lever 20a,
A holding device 25a that receives and holds a superposed portion of the transfer tube 22 for transfer of the elastic grain transfer device 5 and the transfer tube 24 for second fixation.
The holding device 25a has a configuration in which an inverted mountain-shaped receiving plate 25c is fixed to the upper side of the main column 25b.

The control device 14 in the operation device 13 includes:
As shown in FIG. 13, the operation of the various levers 20a and 20b and the various switches 21a, 21b, 21c and 21d, and the detection of the longest / shortest detection switches 55a and 55b described later are input from the input circuit 27a to the CPU 27b. is there. Based on these inputs, the horizontal transfer spiral 4 in the grain storage tank 4 from the CPU 27b via the output circuit 27c.
a, a vertical transfer spiral 19 a in the vertical transfer cylinder 19, a first transfer spiral 28, a second transfer spiral 2 following the telescopic grain transfer device 5.
9, the third transfer spiral 30 and the like are rotated. The forward and reverse rotation of the moving motor 26 controls the expansion and contraction of the transfer cylinder 22 and the third transfer spiral 30, and the start and stop control of the lifting cylinder 25. 31 is configured to control lighting.

As shown in FIGS. 1 to 7, the telescopic grain transfer device 5 includes a first fixing transfer tube 23, a second fixing transfer tube 24 mounted on a joint metal 39, and a second fixing transfer tube 24. A transfer tube 22 which is inserted into the inner diameter 24a of the tube 24 and is telescopically movable; a telescopic device 47 which expands and contracts the transfer tube 22; a transfer start end of the first fixed transfer tube 23; And a hydraulic cylinder type lifting cylinder 25 for vertically moving the telescopic grain transfer device 5 between the vertical transfer cylinder 19 and the transfer end portion of the vertical transfer cylinder 19.

The outer diameter of the first fixing transfer cylinder 23 is inserted into the inner diameter of the outer peripheral wall on the small diameter side (rear side) of the joint metal 39 as shown in FIG. Further, the outer diameter portion of the second fixing transfer cylinder 24 is inserted into the circular diameter portion of the outer peripheral wall on the large-diameter side (front side) of the joint metal 39 and is rotatably supported.

[0023] Thus, by increasing the inner diameter of the end of the transfer of the grain flow, stagnation of the grain can be prevented,
It is possible to prevent the occurrence of crushed grains and the occurrence of damaged grains in the grains. As shown in FIG.
And a first transfer spiral 28 in which a first spiral plate 33 is fixed to an outer peripheral portion of a pipe-shaped first spiral shaft 32 as shown in FIG.
It is a configuration with the interior. A front support metal 32a having a hexagonal outer shape and a circular inner diameter is fixed to the inner diameter portion at the front end of the first spiral shaft 32, and the outer diameter is circular at the inner diameter portion at the rear end. Back support metal 3 with hexagonal inner diameter
2b is fixed. A cover 32c is provided on the outer peripheral portion of the transfer end portion of the first spiral shaft 32.
2c covers the inner boss 39a of the joint metal 39.

As shown in FIGS. 1 and 4, a second transfer spiral 29 in which a second spiral plate 35 is fixed to the outer peripheral portion of a pipe-shaped second spiral shaft 34 is provided inside the second fixing transfer cylinder 24. This is the configuration. The second spiral shaft 34 has a configuration in which a moving groove 36 in which a spiral plate 38 of the third transport spiral 30 moves in a stretchable manner is provided spirally from the transport end to the transport start end. The moving groove 36 is provided substantially at the center of the spiral plate 35 in the front-rear direction. The second
A connecting shaft 34a having a circular outer diameter and a hexagonal inner diameter is fixedly provided on the inner diameter portion of the transfer start end portion of the spiral shaft 34, and the outer diameter of the transfer start end side of the connection shaft 34a is a large diameter 34b. The front end of the large-diameter 34b portion is the inner boss 3 of the joint metal 39.
This is a configuration inserted into the inner diameter portion 9a.

As shown in FIG. 1, the transfer cylinder 22 has a third transfer spiral 30 in which a third spiral plate 38 is fixed to the outer diameter of a third spiral shaft 37 made of a round bar. is there. The third spiral shaft 37 of the third transfer spiral 30 is
The third spiral plate 38 of the third transport spiral 30 extends and contracts in the second spiral shaft 34 of the second transport spiral 29 and the groove 36 for movement of the second spiral shaft 34 of the second transport spiral 29.
It is a configuration that expands and contracts inside.

As shown in FIG. 1, bearings 38a and 38 are provided at the inner diameter of the inner boss 39a of the joint metal 39. The inner diameter of the bearings 38a and 38a has a hexagonal outer diameter and a circular inner diameter. The auxiliary shaft 40 is inserted and supported. One end of the hexagonal portion of the outer diameter of the auxiliary shaft 40 is connected to the front support metal 3 provided on the first spiral shaft 32.
It is a configuration that is inserted into the hexagonal portion of the inner diameter of 2a and supported by the shaft,
The other end is inserted into a hexagonal portion of the inner diameter of the joint shaft 34a provided on the second spiral shaft 34 to support the shaft, and the joint shaft 34a is mounted on the auxiliary shaft 40 by bolts or the like. It is. By making the inner diameter portion of the auxiliary shaft 40 a round hole, the third spiral shaft 37 of the third transfer spiral 30 can be a round bar shaft, and the expansion and contraction movement of the third transfer spiral is smooth.

The transfer tube 22 having the third transfer spiral 30 therein is configured to be inserted into the inner diameter portion 24a of the second fixed transfer tube 23 so as to be extendable and contractible. At a plurality of locations, a plurality of support holders 45 having a predetermined width are fixedly provided in the front-rear direction in the circumferential direction, and the transfer tube 22 for moving smoothly moves the inner diameter portion 24a of the transfer tube 24 for second fixing. It is a configuration that expands and contracts.

When the third helical shaft 37 of the third transfer spiral 30 contracts to the shortest state, a portion located at the transfer start end of the transfer groove 36 provided on the second helical shaft 34 of the second transfer spiral 29. At the outer diameter of the third spiral shaft 37, a receiving metal 44 is provided as shown in FIG.
A rotatable roller 44b is rotatably supported on a support pin 44a provided on the rotary shaft 7, and the rotary roller 44b rotatably moves on the side wall of the moving groove 36 of the second spiral shaft 34. The outer diameter of the rotating roller 44b is smaller than the groove width of the moving groove 36 and has a predetermined gap, so that the third transfer spiral 30 can smoothly expand and contract. Further, when the third spiral shaft 37 is in the shortest state, the end of the third spiral shaft 37 on the transfer start end side is housed in the first spiral shaft 32 of the first transfer spiral 28. It is.

The hexagonal portion of the inner diameter of the rear supporting metal 32b of the first spiral shaft 32 of the first spiral shaft 32 of the first transporting spiral 28 has a hexagonal outer diameter pivotally supported by the supporting metal 41b provided on the upper joint metal 41. And the front support metal 32a at the transfer end is supported by an auxiliary shaft 40.

The extension and contraction movement range of the third spiral shaft 37 of the third transfer spiral 30 is supported by a round hole having the inner diameter of the auxiliary shaft 40, and the small diameter 37a at the end of the transfer end portion is used for movement. The transfer cylinder 22 is supported by a bearing 43c provided in a support metal 43b provided on a front side plate 43a that forms a discharge port 43 of the transfer cylinder 22.

When the first transfer spiral 28 is driven to rotate,
The auxiliary shaft 40 inserted into the inner diameter portion of the front support metal 32a of the first spiral shaft 32 of the first transfer spiral 28 is rotationally driven,
By this rotational driving, the joining shaft 34a of the second spiral shaft 34 of the second transport spiral 29 inserted into the outer diameter portion of the auxiliary shaft 40 is rotationally driven, and the second transport spiral 29 is rotationally driven, and this rotation is performed. By the driving, the moving groove 36 of the second spiral shaft 34 of the second transport spiral 29 is simultaneously rotationally driven, and by this rotational drive, the third spiral shaft 37 of the third transport spiral 30 is rotated.
Is rotated, and the third transfer spiral 30 is driven to rotate, and the first transfer spiral 28 is rotated.
And the second transfer spiral 29 and the third transfer spiral 30 are sequentially driven to rotate.

Thus, since the bearing 34c at the front end of the transfer cylinder 22 can use a bearing for rotation, the structure can be simplified and the expansion and contraction can be smoothly performed. As shown in FIGS. 7 to 9, for example, a box-shaped support plate 46 is attached to the outer peripheral portion of the transfer end portion of the second fixing transfer cylinder 24 at four locations by mounting it with bolts or the like. A roller 46b is rotatably supported by a support pin 46a provided at 46, and each roller 46b is configured to rotate around the outer peripheral portion of the transfer tube 22. It is a configuration that makes the movement smooth. In addition, a guide plate 46c is provided on the outer peripheral portion of the transfer cylinder 22 outside the rollers 46b and provided within a range of expansion and contraction movement of the transfer cylinder 22 in the front-rear direction. In this configuration, the rotation of the transfer cylinder 22 in the circumferential direction is restricted.

As shown in FIGS. 1 to 4 and 7, the telescopic device 47 includes a moving support rod 48 made of a pipe material, a moving motor 26, a telescopic pinion 49 shaft 50, a telescopic rack 51, and the like. It is a structure which consists of. The moving support rod 4
8, a front end portion is attached to a support plate 48a provided at a front end portion of the transfer tube 22 by a bolt or the like as shown in FIGS. 1, 2 and 7, and a base (root) side. Is constituted by a support hole 52 provided in the front-rear direction on the lower side of the support portion 39b above the joint metal 39 and a rack guide 51a fixedly provided on the outer peripheral portion of the second fixing transfer cylinder 24. In this configuration, a telescopic rack 51 is mounted on the upper side surface of the moving support rod 48. The support holes 52 are provided in the front-rear direction on the lower side of the support portion 39b above the joint metal 39, and the insertion holes 5 are formed in the left-right direction on the upper side.
3 are provided, and these support holes 52 and insertion holes 53 are provided.
Is a configuration provided in an orthogonal state.

As shown in FIGS. 1 and 2, the moving motor 26 is mounted on a support portion 39b above the joint metal 39. The support 39b of the joint metal 39 includes:
The motor mounting stay 54 is mounted with bolts or the like.
6 is mounted with bolts or the like. The motor shaft 26a of the moving motor 26 is configured to be inserted into the insertion hole 53 of the joint metal 39. The joint metal 39 is provided with a pinion 49 for expansion and contraction which is supported by bearings 53a provided in the insertion hole 53 of the joint metal 53.
The shaft end on one side of the motor shaft 26 is inserted and connected to the shaft end of the motor shaft 26. These bearings 53a, 5
Reference numeral 3a denotes a configuration in which retaining is performed.

By the forward / reverse rotation of the moving motor 26,
Telescopic pinion 49 connected to this moving motor 26
The telescopic pinion 49 of the shaft 50 is driven to rotate, and the telescopic pinion 49 meshes with the telescopic rack 51 provided on the moving support rod 48, so that the telescopic rack 51 moves back and forth. The moving support rod 48 is slid in the front-rear direction, and the moving transfer cylinder 22 and the third transfer spiral 30 are extended and contracted with the forward and backward sliding movement. 26b is a motor cover.

The longest extension state of the transfer cylinder 22;
The ON-OFF switch type longest detection switch 55a and the shortest detection switch 55b that detect both the shortest contraction state and stop control of the moving motor 26 are provided with the joint metal 39 and the rack guide 51a as shown in FIG. Between the supporting rods 48 on the left and right sides of the first transfer cylinder 23 on both sides. These longest detection switches 5
5a is provided on the left side in plan view, and the shortest detection switch 55b is provided on the right side.

On the left and right sides of the outer peripheral portion of the moving support rod 48 in plan view, as shown in FIG. 2, a left concave portion 48b for detecting the longest state by turning on the longest detection switch 55a,
A right recess 48c is provided for detecting the shortest state when the shortest detection switch 55b is turned on.

By providing the longest / shortest detection switches 55a, 55b close to each other, the arrangement of the harnesses of the longest / shortest detection switches 55a, 55b is easy and the adjustment is easy. Can be.
7 and 10, a U-shaped mounting plate 56c is fixedly provided at a predetermined gap above the outer peripheral portions of the first and second fixing transfer cylinders 23 and 24. In addition, a substantially box-shaped outer cover 56a is detachably provided by bolts or the like, and predetermined gaps are provided in the outer cover 55a in the vertical and horizontal directions to be fixed to the outer peripheral portion of the moving support rod 48. A substantially box-shaped inner cover 56b is provided so as to be movable in the front-rear direction. The outer and inner covers 56a and 56b cover the range in which the moving support rod 48 can move back and forth.

Thus, the outer / inner covers 56a, 5
6b has a stable appearance without cuts and has a good appearance. The harness 57 of the work lamp 31 provided at the front end of the transfer cylinder 22 is housed in a transfer rod 48 made of a pipe material as shown in FIGS. An L-shaped harness mounting plate 57a having a predetermined length is fixedly provided on the outer side of the rear portion of the inner cover 56b fixedly provided on the inner cover 56b, and the inner side surface of the harness mounting plate 57a and the outer side surface of the inner cover 56b are provided. The extra transfer harness 57 is accommodated between the transfer cylinder 22 and the surplus excess harness 57 when the transfer cylinder 22 is in the shortest state, and the approximately half position of the surplus excess harness 57 is moved to the inner surface of the harness mounting plate 57a. This is a configuration supported by a harness clamp 57b.

When the transfer cylinder 22 moves to the longest position, the excess harness 57 is sequentially extended. One end of the harness 57 is connected to the work lamp 31, and the other end is connected to the operating device 13. As a result, the harness 57 of the work light 31 also expands and contracts with the expansion and contraction of the transfer cylinder 22, but the expansion and contraction configuration of the harness 57 can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged side cross-sectional view of a telescopic grain transfer device with a part cut away.

FIG. 2 is an enlarged plan view of the telescopic grain transfer device with a part cut away.

FIG. 3 is an enlarged side view of a joint metal.

FIG. 4 is an enlarged front view of a joint metal.

FIG. 5 is an enlarged side perspective view of the second and third transfer spirals partially broken away.

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 7 is an enlarged side view of the telescopic grain transfer device, partially broken away.

FIG. 8 is an enlarged side view of a roller portion.

FIG. 9 is an enlarged front view of a roller portion.

FIG. 10 is an enlarged sectional view taken along line BB of FIG. 7;

FIG. 11 is an enlarged side view of a harness storage section.

FIG. 12 is an enlarged rear view of the harness storage section.

FIG. 13 is a block diagram

FIG. 14 is an overall side view of the combine.

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

[Explanation of symbols]

 Reference Signs List 22 transfer tube 23 first fixed transfer tube 24 second fixed transfer tube 26 moving motor 26a motor shaft 28 first transfer spiral 29 second transfer spiral 30 third transfer spiral 39 joint metal 47 telescopic device 49 telescopic Pinion 50 Shaft 51 Telescopic rack 52 Support hole 53 Insertion hole

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 2B396 JA04 JC07 KA04 KC05 LA07 LE02 LE03 LE04 LE09 LE19 LR02 LR08 LR13 LR19 MA07 MC02 MC07 MC13

Claims (2)

[Claims] 1. A first fixed transfer tube 23 containing a first transfer spiral 28 for transferring kernels, a second fixed transfer tube 24 containing a second transfer spiral 29, and the second fixed transfer tube. Cylinder 24
In the combine provided with the transfer tube 22 having a third transfer spiral 30 which is inserted into the inner diameter portion of the device and can be expanded and contracted by the expansion device 47, the first transfer tube 23 and the second transfer tube are provided. A telescopic grain transfer device for a combine, wherein the moving motor 26 of the telescopic device 47 is provided above a joint metal 39 connecting the telescopic grain to the telescopic grain. 2. The insertion hole 53 for inserting and supporting a motor shaft 26a of the moving motor 26 and a telescopic pinion 49 shaft 50 in the joint metal 39.
A telescopic rack 51 meshed with the telescopic pinion 49
A combiner telescopic grain transfer device, wherein a support hole 52 for supporting the elastic grain is provided at right angles.