JPH06237631A - Lower transporting guide rail of combine harvester - Google Patents

Abstract

PURPOSE:To eliminate the points at issue of large sway of a lower transporting chain, unfixed amount of root part of grain culm transported and deterioration of durability of the chain itself because of wide gap between the lower transporting chain to be curved by a sandwiching guide and a guide rail in an introduction part of the lower transporting device in a reaping part of a combine harvester. CONSTITUTION:The shape of a guide rail 3 in a transportation induction part X of a lower transporting device 1 is made parallel with a curved line of a lower transporting chain 2, a scraper 5 is attachable to the back side of the transportation and a linear part is constituted at a part before the contact point between the guide rail 3 and the lower transporting chain 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a lower conveying device for nipping and conveying a root of a grain culm in a combine harvester.

[0002]

2. Description of the Related Art FIG. 12 is a partial plan view showing a conveyance introducing portion of a conventional lower conveyance device. Conventionally, in a harvesting part of a combine, a structure for driving and transporting a grain culm transporting part of a lower transporting chain 2 for sandwiching a root of a grain stalk from both sides with a lower transport guide rail 3 and a pinching guide 4 The lower transfer device 1 is known, and the shape of the lower transfer guide rail 3 is linear as shown in FIG. 12, and the gap between the lower transfer chain 2 and the lower transfer chain 2 at the transfer introduction portion X is relatively large. Was there.

[0003]

In the conventional lower conveying guide rail shape, since the gap between the lower conveying chain at the conveying introducing portion is large, the locus of the lower conveying chain depends on the shape of the root of the grain stem. Change greatly, the alignment of the roots of the lower transfer device becomes poor, and the subsequent transfer and threshing are adversely affected. In addition, since the amplitude of the lower transport chain is large, the chain itself rattles and wears quickly, resulting in poor durability.

[0004]

The present invention has the following constitution in order to solve the above problems. That is, in the grain culm conveying passage of the lower conveying device that conveys the root of the grain culm while guiding it from both sides by the lower conveying guide rails and the pinching guides of the lower conveying chain of the mowing unit, the lower conveying at the introduction part of the conveying passage The front end of the guide rail is curved along the locus of the lower transport chain, and a linear portion is provided in front of the contact point of the lower transport guide rail with the lower transport chain. Configure a lower conveyance guide rail that can be attached.

[0005]

In the transport introduction portion of the lower transport device 1, the lower transport chain 2 is provided with the lower transport guide rail 3,
Further, since the curved portion of the lower transport chain 2 is corrected linearly by the pinching guide 4, the trajectory change of the lower transport chain 2 at the time of introducing the grain culm is reduced, and by attaching the scraper 5, the star is changed. The culm is prevented from being caught in the rear side of the conveyance by the wheel 11, and the culm is smoothly introduced.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall perspective view of a combine, FIG. 2 is a plan view of a conveyance introducing section of a lower conveyance device showing the shape of a lower conveyance guide of the present invention, FIG. 3 is a plan view showing another embodiment of the same, and FIG. 5 is a side view of the same, FIG. 6 is a perspective view showing the configuration of the spike guide plate in the upper transfer device of the mowing section, and FIG. 7 is an automatic handling by the load detection of the handling cylinder of the threshing section. 8 is a structural view of depth adjustment, FIG. 8 is a partial front view showing a handling depth detection sensor, FIG. 9 is a partial plan view showing a blast drying mechanism in a blast device of a sorting section, and FIG. 10 is a combine view showing an arrangement of blast devices. An overall plan view and FIG. 11 are overall side views.

First, the overall structure of a combine adopting the present invention will be described with reference to FIG. Crawler traveling device F
At the upper part of the table, the threshing section B and the sorting section C are arranged on the left and right
In addition, a reaping section A is arranged in front of it, and a steering section D and a Glen tank E are mounted on the front and rear on the right side.
Various carrying devices are provided from the mowing section A to the threshing section B, and the raising case 9 shown in FIG.
In order to introduce the grain culm into the carrier while standing it up by the raising chain 8 equipped with a, the upper carrier 16
Is a device for sandwiching and transporting the spikes of the grain culm, and the vertical transport device 1
Numeral 8 is rotatable so as to cause the root of the grain culm horizontally with respect to the ear, and a handling depth sensor 25 is arranged above the culm to convey the grain culm to be conveyed. The handling depth is detected and the handling depth adjusting motor M1 is driven to rotate the vertical conveying device 18 to optimize the handling depth in the threshing section B. Further, the grain culms are conveyed to the feed chain 20 of the threshing section B, threshed by the handling cylinder, and the grains and the like are sifted downward, and the sorting section C separates them into paddy and straw waste.

The grain culm transport mechanism of the reaping section A will be described with reference to FIGS. 4 and 5. Weeding board 7 at the front edge of the mowing frame 6
At the rear part of the weeding plate 7, a raising case 9 is installed which is provided with a tine 8a for driving the raising chain 8 to raise the grain culm in an upright state. A grain culm transport mechanism is configured behind the raising case 9, and a cutting blade 10 is provided laterally on the base of the reaping frame 6 in front of the lower portion and above the cutting blade 10. On the star wheel 11.
Is provided, and the sprocket 12 is pivotally supported on several star wheels 11 of the lower transport chain 2 by the same axis.
Is wound around another sprocket on the rear side to form the lower conveyance device 1. A plurality of the lower transfer devices 1 are provided according to the number of cutting lines, and in FIG. 4, two lower transfer devices 1 are arranged in a Y shape. Further, a take-in belt 14 is disposed in front of the take-in pulley 13 which is coaxial with the star wheel 11 and pivotally supported above the sprocket 12.
The scraping belt 14 and the scraping pulley 13 are covered with a scraping cover 15 from above. Further, at an upper position thereof, substantially above each lower carrier device 1, an upper carrier device 16 is constructed by winding an upper carrier chain 17 having a tine 17a. By configuring as described above, the culm is divided into several rows by the swarding board 7 and the mowing frame 6, the tips are raised and the chains 8 are raised,
The root portion is scraped by the scraping belt 14, cut by the cutting blade 10, further transferred to the lower transport device 1, and is nipped and transported. Further, the tip portion is transferred from the pulling-up chain 8 to the upper transfer device 16 and is nipped and transferred.

Further, the lower transfer devices 1 and 1 merge at the rear part, and a vertical transfer device 18 is disposed behind them.
The root of the grain culm transferred from the lower carrier 1 is conveyed while being raised so as to be horizontal to the tip. On the other hand, the upper transfer devices 16 and 16 also merge at the rear part in the same manner, and together with the vertical transfer device 18, the grain culms are transferred to the rear auxiliary transfer device 19 to form a horizontal shape.
The grains are passed to the feed chain 20 of the threshing section B in the next step and threshed by the rotating handling cylinder 21. The straw after being threshed by the handling barrel 21 is further fed to the feed chain 2.
Grains that are conveyed at 0, treated with straw, discharged to the outside, and mixed with straw chips and the like fall into the sorting unit C, and blower 28
By the blowing of air and the swinging of the chaff 26, the chaff 26 is separated into rice and straw waste.

In the cutting unit A having the above structure, the structure of the lower transfer device 1 will be described with reference to FIGS. 2, 4 and 5. As described above, the lower transfer device 1 has the sprocket 1
The lower conveyor chain 2 is wound around a sprocket behind the second conveyor chain 2, and in the passage portion of the lower conveyor chain 2 for conveying grain stems, a guide arm 3b is projected from below the scraping case 15 to the inside of the conveyor. A lower transport guide rail 3 is extended to guide the lower transport chain 2 in a curved shape at the front. Further, the clamping guide 4 is arranged from the outside of the lower transport chain 2 via the clamping guide arm 4b and the guide adjusting plate 4a, and the clamping guide 4 and the holding portion 2a of the lower transport chain 2 are provided. It is configured to sandwich the grain culms. Further, the pinching guide 4 is freely extendable / contractible with respect to the guide adjusting plate 4a, and the gap between the pinching guide 4 and the lower transport chain 2 is adjusted so that the pinching strength of the grain stem can be adjusted. .

In the transport introduction portion X of the lower transport device 1 having the above-described structure, the lower transport chain 2 is in contact with the lower transport guide rail 3 and is curved. Conventionally, since the lower conveyance guide rail 3 is linear, a large gap is left, but in this embodiment, as shown in FIGS. 2 and 3, the pinching guide 4 and the lower conveyance guide rail 3 are separated from each other. It is bent along a curved locus, and further, the front end portion is opened and bent toward the inside of the transport in order to promote the introduction of grain culms. Further, the linear portion 3 is formed on the lower conveyance guide rail 3 in the front portion of the contact point between the pinching guide 4 and the lower conveyance chain 2.
a is provided, and the lower transport chain 2 in the transport introduction section X is provided.
The curved part of the is corrected straight to facilitate the introduction of culms. Further, at the front end of the lower transport guide rail 3, a scraper 5 can be attached to the rear side (inner side) of the transport so that the star wheel 11 can prevent the culm from being caught in the rear side of the transport. Conventionally, a structure in which the scraper 5 is attached to the upper part of the scraping cover 15 has been publicly known. However, by constructing the scraper 5 so that it can be attached to the lower conveyance guide rail, the configuration of parts can be facilitated, and
The grain culm pushed back by the scraper 5 can be smoothly introduced by the lower transport guide rail without causing positional displacement.

Next, the upper transfer device 16 in the cutting section A
The ear part guide plate 22 arranged on the side of the head will be described.
The ear part guide plate 22 is arranged on the side of the transfer passage of the upper transfer device 16 and supports the end parts of the grain culms sandwiched and carried by the tines 17a of the upper transfer chain 17 from the side so as not to fall over. Is. Conventionally, the spike guide plate 22 is erected on the cover of the upper conveying device 16 by bolting it from the side of the conveying passage, but the grain culm conveyed by the bolt abuts and hinders conveying. It looks ugly in appearance. Therefore, as shown in FIG. 6, the cover 1 of the upper transfer device 16
6a, the guide plate stays 23, 23 are provided upright, and the L-shaped reinforcing plate 22a is provided on the upper side and the clamping metal member 22b is provided on the lower side at the rear side of the spike guide plate 22 on the cover 16a of the upper conveying device 16.・ 22b is attached, and the guide plate stays 23 ・ 23 are clamped by the clamps 22b ・ 22b,
The upper portion of the guide plate stays 23, 23 is attached to the L-shaped reinforcing plate 22.
It contacts the surface a and is screwed from above with bolts 24. With this configuration, the spike guide plate 2
The bolt does not project to the side of the conveying passage of No. 2, does not come into contact with the grain culm, and has a neat appearance.

Next, the structure of automatic adjustment of the handling depth by detecting the load on the handling barrel 21 in the threshing section B will be described with reference to FIGS. 1, 7 and 8. Conventionally, in order to adjust the handling depth, a handling depth detection sensor 25 is provided in front of and behind the vertical transport device 18, and an L sensor (not shown) is provided in front of the vertical transport device 18, and a shallow handling is performed when the L sensor is turned on. Therefore, when the vertical transfer device 18 is automatically turned to the deep handling side and the H sensor 25h shown in FIGS. 1 and 8 is turned on, the vertical transfer device 18 is deeply handled because the deep transfer is performed. Is turned to M sensor 25m is ON
Then, the vertical conveyance device 18 is determined to have the optimum handling depth.
The rotation of is stopped. Even with such a structure in which the handling depth can be automatically adjusted, when the overlaid grain culm or the like is transported, the handling barrel 21 is overloaded in the threshing section B, and rotation is hindered. In this case, a rattling sound generated at the threshing section B is generated, and when such a sound is heard, the operator manually pushes the adjustment knob 25a of the handling depth sensor 25 shown in FIG. The vertical transfer device 18 is rotated to the shallow handling side by sliding it to the handling side, and the load on the handling cylinder 21 is removed. Further, in order to further forcibly discharge and remove defective grain culm and the like in the threshing section B and the sorting section C from the dust outlet, the blowing rate of the air blower in the sorting section C must be increased and the eyes of the chaff sheave must be closed. I have to. Performing a series of these operations manually is very troublesome, and since the operation is dangerous unless the traveling speed is reduced, it also causes a decrease in working speed.

Therefore, as shown in FIG. 7, the rotational load of the handling cylinder is detected, and the rotational adjustment of the vertical conveying device, the air flow amount of the air blower of the sorting section, and the rotational adjustment of the chaff sheave are automatically performed. It was configured into. That is, the rotating shaft 21 of the handling cylinder 21
The load detecting device 26 is attached to the end of the rotary shaft 21a.
The torque of is detected. The detection signal is transmitted to the controller 27, and when it is detected that the number of rotations of the rotary shaft 21a is below a certain value, the handling depth adjusting motor M1 is driven to rotate the vertical transfer device 18 to the shallow handling side. On the other hand, the air intake of the air blower 28 in the sorting section C is increased to increase the air blowing amount, the sheave 29a of the chaff 29 is rotated to close the eyes of the sheave, and the unthreated grain culm in the sorting section C is closed. Is configured to be forcibly discharged and removed from the dust supply port at the rear of the machine body, and clogging and overload of the handling depth in the threshing unit B and the sorting unit C can be eliminated.

Finally, a paddy drying mechanism using an air blower in the sorting section C will be described with reference to FIGS. 9 to 11. The sorting unit C blows air from the blower device 28 to the paddy mixed with straw dust and the like, which descends from the threshing unit B on the upper side,
The chaff 29 is used for sorting, but if the grain culm is moist due to work after rain, etc., the ability to separate paddy from straw debris is reduced. Therefore, as shown in FIG. 8, an evaporator 31 and a condenser 32 are connected in series between the air blower 28 and the air suction port 30, and the evaporator 31 and the condenser 3 are connected.
A space through which wind passes is provided between the two fins 3 and
3 is rotatably arranged, and an air distribution duct 34 is arranged so that the air passing through the evaporator 31 can be sent from the space to the steering section D.

With this structure, the air sucked from the air supply port 30 is cooled and dried by the evaporator 31, further warmed by the condenser 32, and supplied to the blower 28. Since the warm air dried in this way is blown from the air blower 28 into the threshing section B and the sorting section C, the paddy, straw waste, etc. are dried and the sorting becomes easy, and the sorting ability of the sorting section C is improved. It will improve. Further, when the grain culm is not wet in fine weather and normal work can be performed, the fins 33 are rotated so that the air cooled by passing through the evaporator 31 passes through the air distribution duct 34. If the steering section D is supplied with air, it can be used as cooling air in the steering section D, and the operator can perform a comfortable steering operation.

[0017]

Since the present invention is constructed as described above, it has the following effects. That is, since the transfer introducing section of the lower transfer device of the combine is configured as in the claims, the change in the locus of the lower transfer chain in the part is reduced, and the roots of the transferred grain stems are better aligned. Also, the threshing work is improved, and the lower transport chain itself is reduced in rattling and wear, and its durability is improved.
In this way, a good combine can be obtained.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a combine.

FIG. 2 is a plan view of a conveyance introducing portion of the lower conveyance device showing the shape of the lower conveyance guide of the present invention.

FIG. 3 is a plan view showing another embodiment of the same.

FIG. 4 is a plan view showing a transport structure of a reaping unit.

FIG. 5 is a side view of the same.

FIG. 6 is a perspective view showing a configuration of a bristle part guide plate in the upper conveyance device of the cutting unit.

FIG. 7 is a structural diagram of automatic handling depth adjustment by detecting a load on a handling barrel of a threshing unit.

FIG. 8 is a partial front view showing a handling depth detection sensor.

FIG. 9 is a partial plan view showing a blast drying mechanism in the blast device of the sorting unit.

FIG. 10 is an overall plan view of the combine showing the arrangement of the blower of FIG. 9.

FIG. 11 is likewise an overall side view.

FIG. 12 is a plan view of an introduction portion of a lower conveyance device showing the shape of a conventional lower conveyance guide.

[Explanation of symbols]

 1 Lower transport device 2 Lower transport chain 3 Guide rail 4 Entrapment guide 5 Scraper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuaki Nakazawa 428 Enami, Okayama City Seirei Industrial Co., Ltd. In-house

Claims (1)

[Claims] 1. A grain culm transport passage of a lower transport device for transporting the root of a grain stalk while guiding it from both sides by a lower transport guide rail and a pinching guide of a lower transport chain of a reaper, and an introduction part of the transport passage. The front end of the lower transport guide rail is curved along the locus of the lower transport chain, and a linear portion is provided in front of the contact point of the lower transport guide rail with the lower transport chain. A lower conveyor guide rail for combine harvesters, which can be equipped with a scraper on the side.