JP2000092968A - Culm clamping and transferring apparatus of thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the breakage of a culm during the transportation of the culm clamped with a feed chain of a thresher and a take-up guide rod at the transfer starting end of the feed chain. SOLUTION: This culm clamping and transferring apparatus is provided with a feed chain 7 to clamp and transfer a culm to be threshed and a supporting tool 56 positioned at the transfer starting end of the feed chain 7 and having a vertically rotating fulcrum 57 provided with a take-up guide rod 3 and positioned at the downstream side of the transfer direction. The lower face 59 of the take-up guide rod 3 is directed nearly parallel to the upper straight part 61 of each chain plate 60 of the feed chain 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed chain for nipping and transferring a culm to be threshed, and a feed fulcrum provided with a take-up guide rod at a transfer start end of the feed chain. A supporter provided on the lower side and a holding rod provided on the lower side in the transfer direction of the takeover holding rod, and a lower side surface of the takeover guide rod is substantially parallel to the upper straight portion of each chain plate of the feed chain. It is a technology provided and can be used as a grain stalk holding and transferring device for threshing machines.

[0002]

2. Description of the Related Art For example, in a combine harvesting operation, a harvested culm harvested by a combine harvester is transferred by the harvester and fed to a feeder of a threshing machine.
At the transfer start end of the feed chain, the feed chain is supplied to a take-off holding rod provided at a lower portion between the chain plates on both sides of the feed chain. The feed chain and the holding rod take over and hold, and threshing during transfer in the threshing room of the threshing machine.

[0003]

When the harvested culm is taken over by the feed chain and the take-over holding rod, and is held and transported, the take-up holding rod is moved between the left and right chain plates forming the feed chain. By providing in the lower part, if the supply amount of this cut grain culm supplied is small,
The culm of this harvested cereal culm which is being clamped and transported is broken, and the spikes become parallel to the feed chain.
In some cases, unhandled parts occurred, but according to the present invention,
It is intended to solve this problem.

[0004]

SUMMARY OF THE INVENTION To this end, the present invention provides a feed chain 7 for nipping and transferring culms to be threshed.
A supporting member 56 provided with a vertical rotation fulcrum 57 on the lower side in the transfer direction on the transfer start end side of the feed chain 7, a transfer guide rod 3 mounted on the support member 56, and the transfer guide rod 3 In the threshing machine in which the holding rod 31 is provided on the lower side in the transfer direction, the lower side surface 5 of the take-off guide rod 3 is substantially parallel to the upper straight portion 61 of each chain plate 60 of the feed chain 7.
9 is provided so as to be located at the position.

[0005]

In the harvesting operation of the combine, the harvested culm harvested by the combine harvester is transported by the harvester and fed to the feed chain 7 of the threshing machine. Between the chain plates 60 on both sides of the feed chain 7, the lower surface 5 of the take-off guide rod 3 is substantially parallel to the upper straight portion 61 of the chain plate 60.
The feed chain 9 is supplied to the transfer guide rod 3 mounted on a support 56 provided with a rotation fulcrum 57 on the lower side in the transfer direction, and is taken over by the feed chain 7 and the transfer guide rod 3 and clamped. The threshing is carried out by the feed chain 7 and the holding rod 31 to hold the threshing machine.

[0006] When the supply of cut culm is small,
The support member 56 does not rotate upward about the rotation fulcrum 57, but when the supply amount is large, the support member 56 does not rotate.
Rotates upward about the rotation fulcrum 57 as a rotation center,
A large amount of harvested grain culm is pinched and transported by the transfer guide rod 3 and the feed chain 7 provided on the support 56.

[0007]

According to the present invention, the position of the lower surface 59 of the feed chain 7 for holding and transporting the harvested culm by the feed chain 7 and the transfer guide rod 3 provided on the support member 56 is determined by the chain of the feed chain 7. By being provided substantially parallel to the upper straight portion 61 of the plate 60, the culm of the grain culm sandwiched between the feed chain 7 and the transfer guide rod 31 is not broken, and as a result, unhandled stalks are generated. Is no longer to be done.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A grain stalk clamping / transporting device including a feed chain 7, a transfer guide rod 3, a clamping rod 31, and the like mounted on a threshing machine 2 mounted on the combine 1 will be illustrated and described.
A traveling device 6 having a pair of left and right traveling crawlers 5 running on the soil surface is disposed below the undercarriage 4 of the combine 1. A feed chain 7 of a grain stalk clamping and transferring device is provided above the undercarriage 4. Threshing with a grain storage tank 8 mounted laterally for threshing the harvested grain culm conveyed while being clamped and conveyed by the take-off guide rod 3, the clamping rod 31 and the like. Machine 2 is mounted.

At the front of the threshing machine 2, a weeding body 9 for weeding the raised culm from the front end position, a raising device 10 for raising the weeded culm, and a raised culm 10 A reaper 13 provided with a cutting blade device 11 for cutting and a grain stalk raking and conveying device 12 for transporting the cut stalks to the feed chain 7 and the transfer guide rod 3 and the like is provided with a telescopic cylinder 14 driven by hydraulic pressure. Thereby, it is configured to be able to move up and down on the soil surface.

The upper cutting chain 12a and the holding rod 1 of the transfer unit located at the rear half of the grain squeezing and transferring unit 12.
3a means the transfer chain 12 as shown in FIGS.
a of each of the upper and lower chain plates 12b and 12
b, and the U-shaped clamping rod 1 provided in a superposed state above and below the upper chain plate 12b.
The front end 13b of 3a is provided in a substantially parallel state in plan view. At the lower end of the holding rod 13a, a round rod-like guide rod 13c is fixedly provided.
The 3d and the linear portion 12c of the chain plate 12b are configured to be substantially parallel to each other in a plan view.

As a result, these upper transfer chains 12a
The culm of the harvested grain culm to be transported while being clamped and transported by the clamping rod 13a can be prevented, and the grain culm can be transported smoothly. The rake unit located in the first half of the cereal stalk crawl transfer device 12 includes a root drive gear case 14a and a root drive gear case left 14b, as shown in FIGS. 12 and 13, by a mounting plate 15b of a root transfer frame 15a. It is provided in connection. On the drive shaft 14c of the root drive gear case left 14b,
A root transfer sprocket 16b for rotatably driving the root transfer chain 16a is provided so as to be pivotally supported, and an L-shaped intermediate member is provided at an upper and lower intermediate portion of the root transfer sprocket 16b to prevent straw chips and the like being caught in the root transfer sprocket 16b. The upper part of the winding prevention guide 17a is connected to the root transfer sprocket 16b.
It is provided so as to be inserted into the upper and lower intermediate portions over a substantially half circumferential portion, and the lower portion is fastened together with the root drive gear case left 14b mounted on the mounting plate 15b.

As a result, the shape of the winding prevention guide 17a can be simplified, the rigidity can be increased, and the root drive gear case left 14b can be prevented from being damaged. On the threshing machine 2 side, an operating device 15 for controlling the operation of the combine 1 and a cockpit 16 on which an operator is mounted are provided. An engine 17 is mounted below the cockpit 16,
A grain storage tank 8 is provided behind. The traveling device 6, the threshing machine 2, the reaper 13, the engine 17, and the like constitute an airframe 18 of the combine 1.

In the culm conveying path formed by the cereal stalk raking and conveying device 12 of the reaper 13, the culm is supplied to the threshing machine 2 by contacting the culm which is cut and conveyed. A grain stalk sensor 19 for detecting the presence or absence is provided.
A vehicle speed sensor 21 for detecting a traveling vehicle speed based on the output rotation speed is provided in a transmission path of a traveling mission 20 mounted on a front end of the chassis 4.

As shown in FIG. 3, the threshing machine 2 has a threshing chamber 22, a dust processing chamber 23, a second processing chamber 24
And a sorting room 25 is arranged on the lower side. In the threshing room 22, a large number of various teeth 26a are provided.
And a handling cylinder 26 for threshing the harvested grain culm by mounting the shaft in the front-rear direction. The threshing room 22 in plan view
In the second processing chamber 24 parallel to the right side and located on the front side, a transfer starting end for processing while transferring the unthreshed processed material (secondary material) to be reduced forward and discharging it to the sorting chamber 25 A second transfer spiral 27a, a number of processing teeth 27b, a second processing drum 28 equipped with a second discharge blade 27c, and a dust processing chamber 23 positioned at the rear side sequentially from the threshing unit. Dust transfer spirals 29a, a large number of processing teeth 29b, and dust discharge blades 29c are sequentially mounted from a transfer start end for reprocessing while transferring some unthreshed processed material supplied from the chamber 22 backward. The exhaust processing cylinder 30 is coaxially mounted on a shaft.

The handle 26 on the left side of the threshing room 22 in plan view
b, a feed chain 7 for holding the harvested grain culm,
In addition to the arrangement of the take-off guide rod 3 and the holding rod 31, the handling net 26c surrounding the lower part of the outer peripheral edge of the handling teeth 26a to the handling cylinder cover 32, and the lower part of the outer peripheral edges of the processing teeth 27b, 29b. On the rear side of which the side is provided with a step, a leaking member 33 having bar-shaped members provided at predetermined intervals and a second receiving net 34 are provided. A dust discharge port 33a is provided at the transfer terminal end side of the leaking device 33 for discharging straw waste processed in the dust processing chamber 23 and dust such as culm cuts. Guard network 3
No. 4 is provided with a second discharge port 34a for discharging a part of the thresh-processed material in the second processing chamber 24 at the transfer end side.

The upper transfer chain 12 of the reaper 13
1 and the cutting culm transferred by the holding rod 13a, the feed chain 7 of the threshing machine 2 and the transfer guide rod 3 provided at the transfer start end above the feed chain 7 in FIG.
As shown in FIG. 2, the transfer is performed by taking over and transported by a holding rod 31 provided on the lower side in the transport direction of the transfer guide rod 3 and the feed chain 7.
This is a configuration in which threshing is performed during transfer in the inside 2.

On the lower side in the transfer direction of the supporting member 56 to which the takeover guide rod 3 is mounted, an up-and-down rotation fulcrum 57 is provided, and is provided at the front upper end of a holding plate 58 fixed to the front wall of the threshing machine 1. In this configuration, a rotation fulcrum 57 of the support member 56 is pivotally supported by a rotation pin 57a. The support plate 56 is provided on the holding plate 58.
The adjusting bolt 58a for adjusting the position of the supporting member 56 into a predetermined position is inserted into the long hole of the adjusting plate 56a provided on the supporting member 56, and is held by a nut or the like. Reference numeral 3 denotes a configuration that rotates up and down through the long hole.

The lower side surface 59 of the take-off guide rod 3 is connected to a straight portion 61 on the upper side of each chain plate 60 of the feed chain 7.
Are provided so as to be kept substantially parallel to A front support rod 62 is provided on an upper side surface of a front part of the takeover guide rod 3 so as to protrude upward, and an upper end of the front support rod 62 is provided with a support pin 62.
This is a configuration in which the supporting member 56 is rotatably supported by the front end of the supporting member 56 as shown in FIG. A predetermined distance is provided between the front support rod 62 and the rear support rod 63
Is provided on the upper side surface of the transfer guide rod 3 so as to protrude upward.

The upper part of the rear support rod 63 is
A resilient spring 64a is provided in an outer peripheral portion of the rear support rod 63 in the support metal 64 fixedly provided on the support metal 64.
A holding pin 64b is provided at the upper end of the rear support rod 63 located on the outer surface of the rear support rod 4, and the rear support rod 63 is held at a predetermined position, and the transfer guide rod 3 is held at a predetermined position. .

When a large amount of harvested grain culm is taken over between the feed chain 7 and the take-off guide rod 3, the take-up holding rod 3 is pivoted around the support pin 62a at the upper end of the front support rod 62. While rotating upward, the rear support rod 63 moves upward via the spring 64a, and the lower side surface 59 of the transfer guide rod 3 and the upper straight portion 61 of the chain plate 60 of the feed chain 7 The configuration is such that it is always kept in a substantially parallel state. As a configuration for maintaining the culm in a substantially parallel state irrespective of the supply amount of the harvested culm, the culm of the cereal culm is prevented from being broken, and the occurrence of unhandled residue is prevented.

The handling net 26c is formed of a resin material or the like as shown in FIG. 4, and the passing position of each handling tooth 26a implanted in the handling cylinder 26 is a groove protruding outward with respect to the handling cylinder 26. 26
In addition to the provision of d, projections 26e projecting inward with respect to the handling cylinder 26 are provided at locations other than the passing position of the handling teeth 26a. The distal end (a) of the tooth 26a is inserted into the concave groove 26d. The concave groove 26d and the convex part 26e are circumferentially alternately or alternately arranged at a predetermined interval. Leakage hole 26f through which threshed kernels leak
Is provided.

Thus, leakage of grains, improvement of sorting performance, prevention of unhandled grains, and enhancement of strength of the handling net 26c are achieved. A straw discharge port 2b for discharging threshed straw from the partition wall 2a bearing the rear side of the handling cylinder 26
Is the rear end (b) of this straw discharge port 2b as shown in FIG.
Is configured to extend to the center position of the handling cylinder shaft 26h that supports the handling cylinder 26.

Thus, the number of grains scattered from the straw discharge port 2b of the partition wall 2a can be reduced.
In the sorting room 25, threshing material leaked from the handling net 26c, leaked material 33, processed material leaked from the second receiving net 34, and processed material discharged from the second discharge port 34a An oscillating selection device 35 is provided along the axial direction of the handling drum 26, for receiving the supply of the dust discharged from the dust discharge outlet 33a and oscillating while transporting.

The rocking sorting device 35 has a structure in which a rocking fulcrum 35a is provided at a front end, a rocking fulcrum 35b provided at a rear end, and a rocking fulcrum 35b is provided at a front end of the rocking sorting device 35 with the front portion being on the upper side. . As shown in FIGS. 3 and 6, the rocking sorting device 35 is a rack-shaped transfer shelf that transfers the thresh and the processed material toward the end (lower side) in the transfer direction to the upper region of the blower 37. 36a, and a structure in which the threshed material and the amount of the processed material leaked downward from the gap SA between the chaff sheaves 36b by opening and closing the respective door-shaped chaff sheaves 36b toward the lower side following the transfer shelf 36a. The gap SA is configured to be changeable and adjustable.

From the rear end of the chaff sheave 36b toward the lower side, together with the trapped material that has not leaked from the chaff sheave 36b, the dust is not leaked from the handling net 26c and the leaking member 33 but from the dust discharge outlet 33a. Straw waste and culm cut,
In addition, these sawdust, and some grains mixed into the culm, etc., and dust such as twigs without sticks are received, and the saw-shaped straw racks 36c that are roughly sorted are longitudinally separated at predetermined intervals in the front-rear direction. Is located in the upper row. A mesh-shaped grain sieve 36d for middle-sorting the coarsely-selected material leaked from the chaff sheave 36b is provided at the lower stage.

The mechanism for opening and closing the chaff sheave 36b is provided on the left and right swing side plates 35c, 3c of the swing sorting device 35.
5c, each of the chief sheaves 36b is provided to support both ends of the upper support shaft 44a of each of the chief sheaves 36b, and the lower support shaft 44b of each of the chief sheaves 36b is rotated with the upper support shaft 44a as a fulcrum. A guide groove 45 for guiding is provided. Both ends of the lower support shaft 44b of each of the chaff sheaves 36b are rotatably connected by a communication plate 46, so that the gap SA can be adjusted, and the amount of leaking kernels is adjusted.

One end of the upper and lower support shafts 44a, 44b of the front end of the chaff sheave 36b is fixed to the opening / closing arm 47, and a driving pin 47 at the lower end of the opening / closing arm 47 is provided.
a and an operating arm 48 a of an actuator 48 (sheave motor) for opening and closing the chief sheave 36 b are connected by a wire 49. The chaff sieve 36
A closing stopper 50a for stopping the opening / closing arm 47 when the b is closed and an opening stopper 50b for stopping the opening / closing arm 47 when the b is opened are fixed to the swing side plate 35c. The opening / closing arm 47 is provided with a return spring 50c.

The medium-sorted material that has leaked from the chaff sheave 36b and further rocked and sorted by the Glen sheave 36d, and is then leaked from the Glen sheave 36d, is separated on the first sorting shelf 38, which will be described later, by the sorting wind from the blower 37. It is a configuration that is sorted by wind. Further, the rough sorted material which has been rocked and dropped from the straw rack 36c and leaked is sorted into a second sorting shelf 4 described later.
0, the second blower 5 provided below the first sorting shelf 38.
In this configuration, a second sorting wind generated by the first second blowing blade 51a is blown, and the second sorting wind is used to sort the wind.
The second blower blade 51a is configured to be rotationally driven by a second blower motor 51b.

The traveling speed at the time of the harvesting operation detected by the vehicle speed sensor 21 is input to a CPU 53 provided in a control device 52 provided in the operating device 15, and the input harvesting speed is set in the CPU 53. Along with the detection below the predetermined value stored and stored, the number of rotations of the blower motor 37c for rotating the blower blades 37a of the blower 37 is controlled to increase by a predetermined value, and the selected airflow generated by the blower blades 37a is increased. In addition to the control of increasing the predetermined amount, the rotation of the actuator 48 of the swing sorting device 35 is controlled so that the gap SA between the chief sheaves 36b is controlled to be narrow by a predetermined value.

As a result, the sorting wind of the blower 37 is increased, and the space between the chaff sheaves 36b is narrowed, so that culm cutting mixed in the sorted grains can be greatly reduced. A flow sensor 39c for detecting the amount of grains flowing down the first sorting shelf 38 is provided, and the amount of flowing grains detected by the flow sensor 39c is determined by the CPU 5 of the control device 52.
3 and the input amount of falling kernels is
With the detection of the predetermined value or less set and stored in U53, the rotation speed of the blower motor 37c for rotating the blower blade 37a of the blower 37 is controlled to increase by a predetermined value, and the air is blown by the blower blade 37a. A configuration may be employed in which the separation wind is controlled to increase by a predetermined amount, and the rotation of the actuator 48 of the swing selection device 35 is controlled so that the gap SA between the chaff sheaves 36b is reduced by a predetermined value.

As a result, the sorting wind of the blower 37 is increased, and the space between the chaff sheaves 36b is narrowed, so that the culm cut mixed in the sorted grains can be greatly reduced. The chaff sheave 36b of the swing sorting device 35 is controlled so that the open state of the swing sorting state is at or above a predetermined value, and the rotation speed of the blower blade 37a of the blower 37 is controlled at or above a predetermined rotation speed. In some cases, the second blower 51 is configured to start-control a blower motor 51b that rotationally drives the second blower blade 51a.

[0032] This makes it possible to greatly reduce the number of scattered third grains and prevent loss of grains. The wire 49 of the rocking and sorting apparatus 35 is arranged as shown in FIG. 7, and a ring 49a is fixed to the wire 49, and the ring 49a is attached to the side wall 2c of the threshing machine 2.
A structure in which the wire 49 is received while being received by the receiving plate 49b provided in the holding member 49b, and inserted into the insertion hole 49d of the holding tool 49c provided with the insertion hole 49d from the outer portion to hold the ring 49a. The presser 49c is configured to be mounted with bolts, nuts and the like.

Thus, the ring 49a serves as a stopper to prevent the wire 49 from hanging down.
The generation of the bent portion can be prevented, and the wire 49
Can be prevented from being damaged. Each of the chaff sheaves 36b of the rocking sorting device 35 has a front portion at a transfer start end as shown in FIG.
The central section and the rear section are divided into three sections, and the number of the chaff sheaves 36b in each section is an arbitrary plural number, but the central section may be increased. A configuration may be adopted in which each wire 49 and each actuator 48 connected to each wire 49 are provided so as to be capable of opening and closing for each of these sections. In addition, the initial open / close fixed position angle of each section is, with respect to the horizontal, the A section at the front section as shown in FIG.
The central section may be a B angle and the rear section may be a C angle, and these angles may be configured to have a relationship of A <B <C.

[0034] Thereby, the leakage is reduced at the start end of the transfer to improve the sorting performance, and the leakage is increased at the end of the transfer to reduce scattered particles (third scatter) to reduce loss. Has been prevented. Each chaff sieve 36 of the swing sorting device 35
19, the transfer start end (upper side) D is configured to be narrow, and the transfer end (lower side) E is configured to be wide as shown in FIG. The configuration is such that the inclination of the chaff sheave 36b is reduced toward the side.

Thus, the sorting performance can be improved, and even if it is operated in the fully closed state, the transfer end portion is slightly open, so that the loss of grain can be prevented. Upper and lower support shafts 44 of each chaff sheave 36b of the swing sorting device 35
As shown in FIG. 20, the transfer start end (upper side) F is configured to be narrow, and the transfer end (lower side) G is configured to be wide between a and 44b. are doing.

[0036] Thereby, it is possible to improve the sorting performance and prevent the loss of grain. A blower 37 in which a blower blade 37a is rotatably mounted is provided at a lower portion of a starting end (upper side) in a transfer direction of the swinging sorter 35, and the sorting wind blown by the blower 37 is blown to produce kernels. This is a configuration in which the wind is separated from the dust, and 37b is a wind split. The blower blade 37a is configured to control the number of rotations by a speed-change blower motor 37c to increase or decrease the amount of selected air to be blown.

The lower end portion of the blower 37 is connected to the upper side of the first receiving gutter 39b, which contains the grains to be sorted down from the first sorting shelf 38 and is fed laterally by the first spiral 39a. This lower side is connected to the lower end of the first sorting shelf 38, and the lower side near the upper end of the first sorting shelf 38 is placed on the lower side near the upper end of the second sorting shelf 40. ), And the upper end of the second receiving gutter 41b to be fed sideways by the second spiral 41a is placed in an overlapped state at an appropriate interval, and the upper end of the second sorting shelf 40 is placed. Is a configuration opened to the outside of the machine.

The grains fed laterally by the first spiral 39a are taken over by a frying device (not shown) or the like, and are fed into the grain storage tank 8 for storage. The second spiral 4
The second threshing cylinder 42a equipped with a lifting spiral 42b for taking over the unthreshed processed material (second product) laterally fed in 1a and discharging the processed material into the second processing chamber 24 is rightward in plan view of the threshing machine 2. It is a configuration that is inclined.

Above the transfer end portion of the swing sorting device 35, both the sorting wind of the blower 37 and the second blower 51 and the sorting dust by the swing sorting of the swing sorting device 35 are combined.
This is a configuration in which a dust exhaust fan 43 for discharging the dust to the outside of the apparatus is provided. A transfer spiral for horizontally feeding the stored grains is provided at the bottom of the grain storage tank 8, and a discharge support cylinder 54 having a vertical transfer spiral 54 a therein is rotatably supported on the rear side in a vertical posture. With the upper end of the discharge support cylinder 54 as a fulcrum, the discharge auger 55 having a discharge spiral 55a that discharges grains to the outside of the machine over the entire length of the combine 1 in the front-rear direction is vertically rotated, and It is configured to be able to turn left and right in the lateral direction.

The handling drum cover 32 of the threshing machine 2 is configured to be openable and closable. When the handle cylinder cover 32 is opened, and in the open state, a drive belt 65 for driving the straw chain is connected to a roller support plate 66b on which a tension roller 66 is mounted via a connecting wire 67 as shown in FIGS. In this configuration, the tension roller 66 rotates, and the tension roller 66 is provided so as to extend over the driving pulley 68 and the straw driving pulley 69 so that the driving belt 65 is loosened. Thus, the drive belt 65 is sandwiched between the straw frame 70 and the tension roller 66. The height H1 of the brim portion 66a of the tension roller 66 is
Is higher than the height H by a predetermined height.

As a result, the drive belt 65 is prevented from being pinched by raising the flange 66a of the tension roller 66, and when the drive belt 65 is slackened, the drive pulley 68 The drive belt 65 is no longer involved.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a main part.

FIG. 2 is a partially enlarged side view of a main part.

FIG. 3 is an enlarged sectional side view of the threshing machine.

FIG. 4 is an enlarged sectional view of a part of a handling net.

FIG. 5 is a sectional view taken along line AA of FIG. 2;

FIG. 6 is an enlarged side view of a part of the swing sorting device.

FIG. 7 is an enlarged side view and a partially enlarged plan view of a part of a wire of the swing sorting device.

FIG. 8 is a block diagram.

FIG. 9 is an enlarged plan view of a grain stalk raking and conveying section of the reaper.

FIG. 10 is an enlarged plan view of an upper transfer chain portion of the reaper.

11 is a sectional view taken along the line BB of FIG. 10;

FIG. 12 is an enlarged plan view of a grain stalk raking unit of the reaper.

FIG. 13 is an enlarged side view of the grain stem raking portion of the reaper.

FIG. 14 is an enlarged side view of a part of the transmission mechanism of the threshing machine.

FIG. 15 is an enlarged front view of a part of the transmission mechanism of the threshing machine.

FIG. 16 is an overall side view of the combine.

FIG. 17 is an enlarged side view of the swing sorting device.

FIG. 18 is an enlarged side view of the position of each chaff sheave device of the swing sorting device.

FIG. 19 is an enlarged side view of each chaff sheave portion of the swing sorting device.

FIG. 20 is an enlarged side view of each chaff sheave of the swing sorting device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 guide rod 7 feed chain 31 clamping rod 56 support 57 rotation fulcrum 59 lower surface 60 chain plate 61 linear part

Claims (1)

[Claims] 1. A feed chain 7 for nipping and transferring a grain culm to be threshed, and a supporting tool 5 provided with a vertical rotation fulcrum 57 on the lower end side in the transfer direction at the transfer start end side of the feed chain 7.
6, a take-off guide rod 3 attached to the support member 56, and a holding rod 31 provided on the lower side in the transfer direction of the take-off guide rod 3, in the threshing machine provided with each chain plate 6 of the feed chain 7.
A grain stem holding and transferring device for a threshing machine, wherein the lower side face 59 of the takeover guide rod 3 is provided so as to be substantially parallel to the straight portion 61 on the upper side.