JPH05268822A - Thresher - Google Patents

Abstract

PURPOSE:To facilitate maintenance of sieve. CONSTITUTION:In a thresher consisting of a threshing chamber 22 formed by enclosing mainly the lower side of a threshing cylinder 23 with a threshing net 24, an air selecting chamber 25 made at an approximately lower position of the threshing chamber 22 and a rocking and selecting frame 26 having a sieve 31 set in the air selecting chamber 25, an open window 34 for maintenance is bored through a side wall at a part higher than the sieve 31, the sieve is removable and movable and the open window 34 is equipped with an openable and closable side cover 36 to give the objective thresher.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device such as a combine harvester.

[0002]

2. Description of the Related Art In the publicly known Japanese Utility Model Laid-Open No. 60-89842, a threshing chamber formed mainly by surrounding a lower side of a handling cylinder with a handling net, and a wind formed substantially below the threshing chamber. A threshing device comprising a selection chamber and an oscillating selection frame having a sheave provided in the air selection chamber is described.

[0003]

The sheaves of the rocking sorting frame provided in the above-mentioned known air-selecting chamber are entangled with straw debris, which must be cleaned and removed from time to time. Since it was not a structure that could be easily cleaned, there was a problem that the handling cylinder had to be removed. The present invention is prepared for cleaning by forming a window on the upper side wall of the sheave and allowing the sheave to be removed or moved upward.

[0004]

OBJECTS OF THE INVENTION The present invention is designed for easy maintenance.

[0005]

DISCLOSURE OF THE INVENTION According to the present invention, a threshing chamber 22 formed by enclosing a handling drum 23 mainly on the lower side with a handling net 24, and a wind selection chamber formed at a position substantially below the threshing chamber 22. 25 and a rocking selection frame 26 having a sheave 31 provided in the wind selection chamber 25, a threshing device is provided with a maintenance opening window 34 on the side wall above the sheave 31. Can be removed or moved,
The opening window 34 has a side cover 36 that can be opened and closed to form a threshing device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
Is a machine frame of the combine, 2 is a traveling device provided below the machine frame 1, 3 is a threshing device provided above the machine frame 1, 4 is a mowing section provided in front of the machine frame 1, and 5 is the mowing section A plurality of grass bodies provided at the frontmost position of 4 at predetermined intervals on the left and right sides, 6 is a raising device that raises the grain culms sown by the grass body 5, and 7 is a raising device 6
The scraping device for scraping the grain culm caused by the (Fig. 2, Fig. 3,
4), 8 is a cutting blade, and 9 is a stock carrier transporting device for holding and transporting the stock of the grain culm cut by the cutting blade 8. A tip conveying device for conveying the tip side of the grain culm cut by the cutting blade 8 is provided.
Reference numeral 10 is a mowing unit cover, 11 is a stock ancestor transfer / conveyance device that is transferred to a grain stalk supply device 12 that supplies the stalks mowed by the mowing unit 4 to the threshing device 3, 13 is a tip tip transfer / conveyor device, and 14 is a stub source carrier 9 is a rear-side focusing device provided on the rear side of the grain culm conveying passage of the tip conveying device, and the grain culm conveyed by the stock origin conveying device 9 is transferred to the stock origin transferring conveyer 11 and the tip transferring conveyer 13. It is conveyed to the transfer section A. The rear-side focusing device 14 is the stock-source transport device 9 outside the stock-source transport device 9.
Although it may be configured as a single chain,
In this case, the position of the transmission gear becomes a problem and the transmission mechanism becomes complicated. However, in this embodiment, the chain guide member 15 is provided to change the moving direction without providing a gear and simplify the structure. Making good use of space.

Further, in the case of eight-row cutting, the stock-source transport device 9
Are arranged on both the left and right outer sides and in the center, and a guide guide 16 is provided between the left and right outer sides and the center. In addition, at the side portion of the tip transfer device 13, the tip transfer device 13 is provided.
A guide guide 17 is provided which can be moved far and far with respect to the guide guide 17, and the guide guide 17 is attached to an attachment arm 19 to which the slide rod 18 of the stock transfer device 11 is attached. The guide guide 17
Is urged by the elasticity of the spring 20 so as to approach the tip transfer device 13, and moves to a position capable of guiding the amount of grain culms supplied in the highest efficiency state against the elasticity of the spring 20. Composed.

As shown in FIG. 9, the threshing chamber 22 of the threshing device 3 is provided with a handling drum 23, and the lower side of the handling barrel 23 is surrounded by a handling net 24. A wind-selecting chamber 25 is formed at a position substantially below, and an oscillating selection frame 26 is provided in the wind-selecting chamber 25. Reference numeral 27 is a blasting fan for blowing air into the air selection chamber 25, 28 is the first conveyor provided below the swing selection frame 26, and 29 is the second conveyor. The swing selection frame body 26 is located above the blower karako 27, and is the transfer rack 3
0, a sheave 31 following the rear side of the transfer shelf 30, a straw rack 32 provided on the rear side of the sheave 31, and a sieve net 33 provided below the sheave 31. Some or all of them are attached to the swing selection frame 26 so as to be detachable or movable (rotatable). That is, at least an upper side part of the sheave 31 (may be a part of the threshing chamber 22 and a part of the wind selecting chamber 25).
A maintenance opening window 34 is formed in the maintenance opening window 34, and the sheave 31 is moved from the maintenance opening window 34 with respect to the swing selection frame body 26 so that the sieve mesh 33 is opened to an upper portion of the sieve net 33 for maintenance. It was done. In this embodiment, the sheave 31 is divided into front and rear parts, and the rear sheave 31 is rotatably attached to the swing selection frame 26 by a shaft 35. Reference numeral 36 is a side cover that closes the maintenance opening window 34, and 37 is a mounting lever of a mounting bracket of the side cover 36.

Therefore, the grain culm feeder 12 is provided on the side of the threshing chamber 22, and is constituted by a feeding / conveying chain 38 for holding and transporting grain culms and a slinging rod 39, and the slinging rod 39 is It is attached to the rotating end side of the upper cover 40 that covers the upper side of the threshing chamber 22, and when the upper cover 40 is moved upward,
It is configured to move up integrally. The supply / transport chain 38 may be retracted from the side portion of the maintenance opening window 34 by any configuration.

In FIG. 10, a passive gear 43 is provided at the starting end of the upper chain guide rail 42 that guides the upper chain of the supply / conveyance chain 38, and a drive gear 44 is provided at the end of the upper chain guide rail 42. Is provided with a lower chain guide rail 45 for guiding the lower chain, and a tension gear 46 is provided at the rear part of the lower chain guide rail 45. The supply / conveyance chain 38 includes the upper chain guide rail 42 and the lower chain. The chain guide rail 45 is configured such that the passive gear 43 side moves upward around the drive gear 44. Reference numeral 47 is a spring, 48 is a front fixed side plate, and 49 is a rear fixed side plate. 12 to 14, the front fixed side plate 48, the rear fixed side plate 49, and the lower fixed side plate 50 are shown.
A guide gear 51 is provided in each of the guide gears 51 so that the supply / conveyance chain 38 can move while avoiding the maintenance opening window 34.

Therefore, as shown in FIG. 15, a variable cutting edge 52 is provided on the lower surface of the upper cover 40 above the handling cylinder 23. The variable cutting blades 52 are axially attached to the upper cover 40 at predetermined intervals in the front and rear, the connecting rod 53 is attached to one end of each variable cutting blade 52, and the operating handle 54 is attached to the connecting rod 53. Install. When the operating handle 54 is operated, the variable cutting blades 52 are moved backward from the state where they intersect with the axial direction of the handling cylinder 23 to the outside so as to guide the grain waste in the threshing chamber 22 to the rear side. Tilt to position. Reference numeral 55 is a fixed cutting blade provided on the inner surface of the rotating end of the upper cover 40. Further, when the side cover 36 is attached to the side cover 36 so as to close the maintenance opening window 34, it also has an effect of pressing the handling net 24. Reference numeral 56 is a processing chamber provided on the side of the threshing chamber 22, 57 is a cutting vertical cylinder for moving the cutting unit 4 up and down, 58 is a suction fan, 59
Is a cutter provided on the rear side of the suction fan 58, 60 is a straw conveyer, 61 is a Glen tank, and 62 is a discharge auger. Although not shown, a dust chamber may be provided on the side of the threshing chamber 22.

[0012]

[Operation] Next, the operation will be described. Since the present invention has the above-described configuration, the grain culm is weeded by the grass body 5 of the cutting unit 4, the culled grain culm is raised by the raising device 6, and the root side of the raised culm is the cutting blade 8 The scraped grain culms are scraped by the scraping device 7 and handed over to the stock transfer device 9, the root side of the grain stalks is carried by the stock transfer device 9, and the tip side of the culm is transferred by the tip. The grain culm transported by the device is further transported by the rear-side focusing device 14 toward the transfer unit A and is transferred to the stock-source transfer device 11 and the tip transfer device 13, and the stock-source transfer device 11 and Tip transfer device 1
3 takes over the grain culm to the grain culm feeder 12 and supplies it to the threshing chamber 22.

In the above case, a guide guide 17 is provided on the side of the tip transfer device 13 so that the tip transfer device 13 can be moved far away from the tip transfer device 13, and the guide guide 17 is moved by the elasticity of the spring 20. It is urged to approach the transfer device 13 and is configured to move to a position capable of guiding the amount of grain culms supplied in the most efficient state against the elasticity of the spring 20. When the amount of grain culm to be supplied to the tip handing transfer device 13 at the start or end is small, the guide guide 17 is urged by the elasticity of the spring 20 so as to approach the tip handing transfer device 13, and a small amount of grain culm. But missing
When the grain culm is supplied in a state where it is prevented from falling and is reliably conveyed, and when the grain culm is supplied in the most efficient state, the grain culm is moved outwardly against the elastic force of the spring 20 to be conveyed, and the grain culm is moved in accordance with the amount.

Then, the grain culms supplied to the threshing chamber 22 are threshed by the rotating handling drum 23, and the threshing net 2 is used.
4 leaks and falls on the transfer shelf 30 of the swing selection frame 26, and is sorted in the wind selection chamber 25 by the swinging sheave 31 and the air blow from the air blower 27. The first item is the first conveyor 28.
Then, the second product enters the second conveyor 29. In this case, as shown in FIG.
Since the variable cutting blade 52 is provided on the lower surface of the upper cover 40 above, the variable cutting blade 52 improves the threshing performance by cutting the grain culm that rotates together with the handling cylinder 23. Then, when the operation handle 54 is operated, the inclination angle of the handling cylinder 23 with respect to the axial direction is changed. Therefore, if the variable cutting blade 52 is adjusted according to the threshing state, the variable cutting blade 52 causes the grain waste in the threshing chamber 22 to move to the rear side. It acts as a guide.

Thus, the sheave 31 and the sieve net 33 are
Requires maintenance due to clogging of grain shavings, but a maintenance opening window 34 is formed in a part of the threshing chamber 22 and a part of the wind selecting chamber 25. , Moving (removing) the grain culm feeder 12 located on the side of the maintenance opening window 34 by any means,
When the side cover 36 is removed by operating the mounting lever 37, a part of the threshing chamber 22 and a part of the wind selecting chamber 25 are opened by the maintenance opening window 34, and the handling net 24
It is possible to attach / detach and maintain the sheave 31.

In the present invention, however, since the sheave 31 is movably constructed, not only can the sheave 31 be moved to facilitate maintenance of the back surface of the sheave 31, but also the upper portion of the sieve net 33 can be maintained. Since it can be opened, maintenance such as inspection and replacement of the screen 33 can be performed. Further, in this embodiment, the sheave 31 is divided into front and rear parts, and the rear sheave 31 is rotatably attached to the swing selection frame body 26 by the shaft 35. Therefore, the rear sheave 31 is handled. Net 24
It is rotated at a large angle without being disturbed by the above, and the upper part of the screen 33 is largely opened.

In the embodiment shown in FIGS. 12 to 14, guide gears 51 are provided on each of the front fixed side plate 48, the rear fixed side plate 49, and the lower fixed side plate 50, and the position where the maintenance opening window 34 is avoided. Since the supply transport chain 38 is wound around each of the guide gears 51, the side cover 36 can be removed to open the maintenance opening window 34 without moving the grain culm supply device 12. The sheave 31 may be replaced by opening the maintenance opening window 34 according to crops such as rice and wheat.

[0018]

[Effect] According to the present invention, the handling net 2 is provided mainly on the lower side of the handling barrel 23.
And a threshing chamber 22 formed by being surrounded by 4
And a wind selection chamber 25 formed at a position substantially below
In the threshing device including the swing selection frame body 26 having the sheave 31 provided therein, an opening window 34 for maintenance is opened on a side wall above the sheave 31, and the sheave 3 is opened.
Reference numeral 1 denotes a threshing device in which the sheave 31 is removable or movable, and the opening window 34 is provided with a side cover 36 that can be opened and closed.
Not only can the backside of 1 be easily maintained,
Since the upper part of the screen 33 can be opened, the screen 33
The effect of being able to perform maintenance such as inspection and replacement of

[Brief description of drawings]

FIG. 1 is an overall side view.

FIG. 2 is a plan view of eight-row cutting.

FIG. 3 is a plan view of 4-row cutting.

FIG. 4 is a plan view of eight-row cutting.

FIG. 5 is a vertical cross-sectional view of a guide.

FIG. 6 is a rear view of the transfer device.

FIG. 7 is a rear view of the transfer device.

FIG. 8 is a plan view.

FIG. 9 is a vertical sectional side view of the combine.

FIG. 10 is a side view of a main part.

FIG. 11 is a vertical sectional front view of an essential part.

FIG. 12 is a vertical sectional side view of the second embodiment.

FIG. 13 is a vertical sectional side view of the same main part.

FIG. 14 is a front view of the same section.

FIG. 15 is a plan view.

FIG. 16 is a side view.

FIG. 17 is a front view.

FIG. 18 is a perspective view.

[Explanation of symbols]

1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ...
Mowing unit, 5 ... Grass body, 6 ... Raising device, 7 ... Scraping device, 8
... Cutting blade, 9 ... Stock carrier, 10 ... Cover, 11 ... Stock carrier, 12 ... Grain feeder, 13 ... Tip carrier, 14 ... Rear focusing device, 15 ... Chain guide member,
16 ... Guide guide, 17 ... Guide guide, 18 ... Sliding rod,
19 ... Mounting arm, 20 ... Spring, 22 ... Threshing chamber, 23 ...
Handling cylinder, 24 ... Handling net, 25 ... Wind selection chamber, 26 ... Oscillating sorting frame, 27 ... Air blower, 28 ... First conveyor, 29 ... Second conveyor, 30 ... Transfer rack, 31 ... Sheave, 32 ... Straw rack, 33 ... Sieve mesh, 34 ... Opening window for maintenance, 35 ... Shaft, 36 ... Side cover, 37 ... Mounting lever,
38 ... Supply / conveyance chain, 39 ... Sliding rod, 40 ... Top cover, 42 ... Upper chain guide rail, 43 ... Passive gear, 4
4 ... Drive gear, 45 ... Lower chain guide rail, 46 ... Tension gear, 47 ... Spring, 48 ... Front fixed side plate, 49
... rear fixed side plate, 50 ... lower fixed side plate, 51 ... guide gear, 52 ... variable cutting blade, 53 ... connecting rod, 54 ... operating handle, 55 ... fixed cutting blade, 56 ... processing chamber, 57 ... mowing vertical cylinder , 58 ... Suction fan, 59 ... Cutter, 60 ... Straw conveyor, 61 ... Glen tank, 62 ... Discharge auger.

Claims (1)

[Claims] 1. A threshing chamber 22 formed mainly by surrounding a lower side of a handling drum 23 with a handling net 24, a wind selection chamber 25 formed substantially below the threshing chamber 22, and a wind selection chamber 25. In a threshing device consisting of a swing selection frame body 26 having a sheave 31 provided therein, a maintenance opening window 34 is opened on a side wall above the sheave 31, and the sheave 31 is removable or movable. A threshing device in which an opening window 34 has a side cover 36 that can be opened and closed.