JP5765012B2 - Threshing device - Google Patents

Description

The present invention relates to a threshing apparatus.

The technique disclosed in Patent Document 1 is provided with an opening that can introduce a part of the sorting air from Karatsu toward the sieving line of the swinging sorting shelf, and the amount of introduction of the sorting air into the opening can be increased or decreased. The wind direction plate can be freely changed in posture, and based on the detection result of the processing amount detection sensor, when the amount of processed material increases, the wind direction plate becomes a posture to increase the amount of introduced wind, and as the amount of processed material decreases The wind direction plate is configured to reduce the amount of introduction.

JP-A-7-274696

An object of the present invention is to introduce an amount of sorting air by changing the posture of a wind-fluid that guides a part of the sorting air from Tang Dynasty toward a chaff sheave of a swinging sorting shelf in accordance with the amount of processed material. The purpose is to improve the sorting performance by changing the sheave opening of the chaff sheave in accordance with the increase and decrease of the sorting wind, and to reduce the third loss.

In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the first aspect of the present invention, a swing sorting shelf (15) for swinging and sorting threshing products is provided with a plurality of sheave plates (15) at predetermined intervals in the swinging direction of the swing sorting shelf (15). 18a) is provided with a chaff sheave (18) and a layer thickness sensor (36) for detecting the layer thickness of the threshing product on the swing sorting shelf (15), and below the swing sorting shelf (15) winnowing fan (22) is provided, a part of the screening air from該唐Ki (22) provided with a chaff sieve wind flow separator for guiding toward the (18) (32), 該風flow separator (32), the winnowing fan ( 22) The air flow direction intermediate portion in the air flow path is provided so as to be rotatable up and down, and the air flow is formed on the upper side of the air flow fluid (32) by the air flow fluid (32). The lower side of the passage and the wind fluid (32) that is blown toward the chaff sheave (18) The upper end of the air flow direction in the wind fluid (32) in the wind direction fluid (32) is rotated downward and the lower air path is narrowed, so that the sorted air blown to the chaff sheave (18) is divided. The air volume is reduced and the upper end of the air flow direction of the tang (22) in the wind fluid (32) is rotated upward to widen the lower air passage, so that the selected air blown to the chaff sheave (18) The configuration is such that the air volume increases, and the attitude fluid (32) is changed to increase the selected air volume guided to the chaff sheave (18) as the layer thickness of the threshing product detected by the layer thickness sensor (36) increases. In addition, the threshing apparatus is characterized in that the sheave plates (18a) are connected so as to have a wide interval.

When the layer thickness of the threshing processed product detected by the layer thickness sensor (36) is equal to or less than a predetermined thickness, the interval between the sheave plates (18a) is not changed and the threshing is performed. the greater thickness of the workpiece exceeds the predetermined thickness, the threshing apparatus 請 Motomeko 1, wherein where the structure spacing of sheave plate (18a) is widened.

According to a third aspect of the present invention, the suction dust exhaust fan (25) capable of changing the driving speed is provided above the chaff sheave (18), and the suction is increased as the treatment layer thickness detected by the layer thickness sensor (36) increases. dust-exhaust driving speed of the fan (25) is a threshing apparatus structure as the請 Motomeko 1 or claim 2 wherein the speed increasing.

Fourth aspect of the present invention, and each sheave plate (18a) threshing apparatus 請 Motomeko 1 or claim 2 or claim 3, wherein was changed configurable maximum distance between.

According to the first aspect of the present invention, when the amount of the threshing product on the swing sorting shelf (15) increases, the wind fluid (32) increases the sorted air volume based on the detection result of the layer thickness sensor (36). Change the posture. As the attitude fluid (32) changes its posture in the direction of increasing the air volume, it operates in a direction in which the interval between the sheave plates (18a) of the chaff sheave (18) increases. When the amount of the threshing product decreases, the wind fluid (32) turns to a posture to reduce the selected air volume, and accordingly, the interval between the sheave plates (18a) of the chaff sheave (18) is reduced. .

In this way, wind sorting and rocking screen sorting according to the amount of the threshing product on the rocking sorting shelf (15) are possible, and the sorting accuracy is improved and the third loss is greatly reduced.

In addition, the upper end of the air flow direction of the sorting fluid (32) is turned downward to narrow the lower air passage, so that the volume of the sorting air blown to the chaff sheave (18) is reduced. Since the upper end of the sorting air blowing direction of the fluid (32) is rotated upward to widen the lower air passage, the amount of the sorting air blown to the chaff sheave (18) is increased. Wind sorting and sieving sorting according to quantity can be performed efficiently and accurately, and sorting performance is further improved.

According to the invention described in claim 2, since the chaff sheave (18) starts to open after the layer thickness of the threshing product exceeds the predetermined layer thickness while having the effect of the invention of claim 1, threshing When the layer thickness of the processed material is smaller than the predetermined layer thickness, it is possible to prevent a sorting failure due to an increase in the sheave interval, and to effectively perform wind selection and sieve selection.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the suction dust exhaust fan (25) is driven at a speed according to the amount of the threshing processed product, so that the chaff sheave (18) Dust disposal such as saw dust floating above can be performed efficiently and efficiently, and the sorting performance is further improved.

According to the invention described in claim 4, the effect of the invention according to claim 1, claim 2, or claim 3 is achieved, but the maximum interval between the sheave plates (18 a) can be changed. Sorting can be performed according to the type of threshing processed product.

For example, in wheat threshing work, there is a greater proportion of sawdust in the treated product than rice, so by limiting the sheave interval of wheat smaller than rice, in the case of wheat work, the amount of threshing processed product is Even if it increases, the fall of the sawdust downward can be reduced, and the sieve selection can be performed well.

Side cross section of threshing machine Cross-sectional plan view of main parts of threshing machine Side cross-sectional view of main parts of threshing machine Front sectional view of main part of threshing machine Same section as above Side view showing operating state of wind fluid Control block circuit diagram Graph showing the relationship between sheave opening and treated layer thickness A graph showing the relationship between the rotation speed of Karatsu and the thickness of treated material Side cross-sectional view of the main part of the chaff sheave Same top plan view

An embodiment of the present invention will be described with reference to the drawings.
The threshing machine (threshing unit) shown in FIGS. 1 and 2 has the following configuration.
That is, the threshing part 1 is driven by a handling cylinder 3 that drives and rotates the tip part of the cereals that are conveyed while holding the stock by a threshing feed chain 4 stretched on one side of the handling room 2. It is configured to thresh. A receiving net 5 is stretched around the lower half of the handling chamber 2, and a handling cylinder cover 6 that covers the upper portion of the handling cylinder 3 swings and opens with one side of the handling chamber as a fulcrum. On the side opposite to the feed chain 4 side of the processing chamber 2, a second processing cylinder 7 for receiving a second processed material from the processing chamber and performing a grain removal process is parallel to the processing cylinder 3 and is inserted into the second processing chamber 8. It is built. A dust removal treatment cylinder 9 is installed in the dust removal treatment chamber 10 on the same axis as the rear of the second treatment cylinder 7.

The handling chamber 2 is configured between the front side plate 2a and the middle side plates 2b and 2c, and the dust outlet 12 at the end of the handling chamber is formed between the middle side plates 2b and 2c. The handling cylinder 3 is extended rearward from the dust outlet 12 to form a fourth processing cylinder 3A, and a small grain collection chamber 13 is formed between the middle plate 2c and the rear plate 2d.

The swing sorting device (swing sort shelf) 15 below the handling chamber is swing-driven in the front-rear direction by the swing crankshaft 14, and receives the processed product after the threshing process and swings and transfers it. In this configuration, the transfer shelf 16, the grain sheave 17, the chaff sheave 18, and the straw rack 19 are arranged in this order from the upper side in the sorting direction, and the fine sorting net 20 and the first return shelf 21 a are arranged below the chaff sheave 18. The second return shelf 21b is arranged and provided.

In addition, in order from the upper side of the sorting direction to the lower side of the oscillating sorting shelf 15, there are provided a red pepper 22, a first spiral 23, a second spiral 24, and a suction dusting fan 25 above the dust sorting chamber. It is composed.

The grain sheave 17 is arranged on the upper side from the lower side of the dust outlet 12 and is composed of a fixed sheave 17a having a constant inclination in the front-rear direction and inclining in the up-down direction with a constant inclination angle. The chaff sheave 18 is arranged on the lower side of the dust outlet 12, is configured to receive the processed material from the grain sieve 17 and the processed material from the small grain collection chamber 13, and sorts the sieve, and has a longer selection process than the grain sieve 17. A plurality of movable sheave plates 18a that are configured to be swingable and openable around the horizontal axis Q are arranged in parallel. Each sheave plate 18a is configured to swing and open by a sheave opening / closing motor 27 via an operating arm 26a and a wire 26b so as to change and adjust the leakage opening degree of the processed material.

The grain sheave 17 includes a cleaning plate 28 disposed in parallel with the front-rear swing direction of the swing sorting shelf and at predetermined intervals in the left-right direction, and a scraper that contacts the upper surface of each fixed sheave 26 to remove deposits. A plurality of sheave scrapers 30, 30, 30.

In the wind selection path of the sorting wind from the Chinese style 22, two upper and lower wind fluids (flappers) 31 and 32 that change the flow of the sorting wind are provided. The upper wind component fluid 31 is configured to swing up and down about the pivot point P1 on the start end side, and the lower wind component fluid 32 divides a part of the selected wind from the Chinese chaff 18 In this configuration, the guide is introduced and guided toward the side, and is configured to swing up and down with the fulcrum shaft P2 of the intermediate portion as the center of rotation.

The upper and lower wind fluids 31, 32 are connected by a connecting link 33, and the inclination posture of the wind fluids 31, 32 can be changed by a movement operation of the connecting link 33 in the length direction.

When the starting end side of the lower minute fluid 32 is oscillated and displaced downward, the selected air volume to the chaff sheave 18 is reduced, and the starting end of the minute fluid 32 is swung upward. As the displacement is increased, the selected air volume toward the chaff sheave 18 gradually increases. The orientation change of the wind fluid is driven and controlled by the drive motor 34.

On the transfer shelf 16 on the starting end side of the swing sorting shelf 15, the amount of processed material is detected, which includes a sensor float 36 a that rotates up and down according to the layer thickness of the processed material, and a layer thickness sensor 36 b that detects vertical movement of the sensor float. A sensor 36 is installed.

When the amount of threshing processed material falling from the handling chamber falling on the transfer shelf 16 increases, on the basis of the processing amount detection result of the processing amount detection sensor 36, the starting end side of the wind component fluid 32 is oscillated and displaced upward, and the selected air volume. When the amount of processed material is reduced, the controller 35 is configured to control the controller 35 so that the start side of the wind fluid 32 swings and displaces downwardly to reduce the selected air volume. On the other hand, the chaff sheave 18 operates in a direction in which the sheave plate 18a opens in accordance with the change in posture of the wind fluid 32 in the direction of increasing the air volume, and the sheave plate 18a moves in response to the change in posture of the wind fluid 32 in the direction of decrease in the air volume. The drive control is performed by the motor 27 so as to operate in the closing direction. Further, the chaff sheave 18 is configured such that when the amount of the processed material exceeds a certain value, that is, when the amount of the processed material reaches a predetermined amount, the sheave plate starts to operate in the opening direction. Since the sheave plate begins to open after the amount of processed material reaches a predetermined amount, sorting defects can be eliminated. Further, the chaff sheave 18 having the above-described configuration is set so that the upper limit value of the sheave opening is large in the case of rice crops and smaller than that in the case of wheat crops.

In the threshing work of wheat, since there is a greater proportion of swarf in the treated product than rice, by limiting the sheave opening of the wheat to be smaller than the rice, even if the amount of treated product increases, The amount of sawdust falling on the sorting shelf can be reduced, and screening can be performed well.

The suction dust exhaust fan 25 can arbitrarily adjust the suction air volume by increasing / decreasing the number of rotations, and based on the detection result of the processing amount detection sensor 36, the suction amount increases as the processing amount increases. By controlling the speed change motor 37 so as to decelerate as the amount decreases, it is possible to perform dust collection sorting according to the amount of processed material.

Further, in this example, the speed change motor 38 is configured to be able to increase / decrease speed so that the air volume can be adjusted also in the carp 22, and increases as the processed material amount increases based on the detection result of the processed material amount detection sensor 36. The speed is increased and the speed is reduced as the amount of processed material decreases. In the example of FIG. 9, constant speed zones V1 and V2 having a constant speed are provided at the upper and lower limits of the shift range. According to this, when the layer thickness is small, the speed is increased more than necessary to prevent an increase in noise and it is possible to prevent over-selection. It is possible to prevent the ability from decreasing, the reduction rate from increasing, and the sorting state from deteriorating. Moreover, in wheat threshing work, the percentage of swarf in the processed material is larger and the layer thickness is larger than that of rice. Therefore, as shown in the example (Fig. 9), the rotation speed of wheat from rice is increased. By selecting a high value, wind selection can be performed well.

As another example, when implementing a hybrid combine, a workpiece layer thickness sensor is provided on a swing sorting shelf, and when the battery voltage is lowered and the layer thickness is thin, the rotational speed of each motor is decreased. Configure. According to this, power consumption can be reduced, and since the layer thickness is thin, even if the rotational speed of each part is lowered, the grain loss is not deteriorated.

In the embodiment shown in FIGS. 10 and 11, the sheave scraper 30 that reciprocates in the left-right direction is provided in the chaff sheave 17 that does not change the sheave opening. The sieve wire 40 is provided so as to contact the surface of the sheave plate 18a, and the sieve wire 40 is fixed to the cleaning plate 28 provided on the chaff sheave 18 extending from the side of the chaff sheave 17 to the left and right of the sheave scraper 30. It is configured to reciprocate in the direction. The movement of the sieve scraper cleans the movable sheave surface with a sieving line, so that no clogging occurs at the movable sheave portion even if the wet material is threshed, and the third loss can be reduced.

15 Swing sorting shelf 18 Chaff sheave 18a Movable sheave plate (sheave plate)
22 Kara 25 Suction dust exhaust fan 32 Wind fluid 36 Layer thickness sensor

Claims (4)

A chaff sheave (18) in which a plurality of sheave plates (18a) are arranged at a predetermined interval in the swinging direction of the swing sorting shelf (15) on the swing sorting shelf (15) for swinging and sorting the threshing product. , and a thickness sensor (36) for detecting the thickness of the oscillating sorting shelves (15) threshing treated on, provided the winnowing fan (22) is below the swing sorting shelves (15),該唐Ki ( 22 ) is provided with a wind fluid (32) for guiding a part of the selected wind from the chaff sheave (18), and the wind fluid (32) is an intermediate portion in the blowing direction in the air passage of the tang (22). Is provided so as to be pivotable up and down with the wind fluid (32), and the air flow path is formed so that the air flow path is formed above the wind fluid (32) and the wind fluid (32). It is divided into a lower air passage that is formed on the lower side and blows toward the chaff sheave (18). ), The upper end of the air flow direction of the tang (22) turns downward and the lower air passage is narrowed, so that the air volume of the selected air blown to the chaff sheave (18) is reduced, and the wind component fluid (32) The layer thickness sensor is configured to increase the amount of the selected air blown to the chaff sheave (18) by rotating the upper end of the air flow direction of the tang (22) in the upper direction and widening the lower air passage. As the layer thickness of the threshing product detected by (36) increases, the attitude of the wind fluid (32) is changed so as to increase the selected air volume guided to the chaff sheave (18), and the sheave plate (18a) Threshing apparatus characterized by being connected so that the interval is wide. When the layer thickness of the threshing product detected by the layer thickness sensor (36) is equal to or less than the predetermined thickness, the interval between the sheave plates (18a) is not changed, and the layer thickness of the threshing product is the predetermined thickness. layer increases beyond the thickness, threshing apparatus 請 Motomeko 1, wherein where the structure spacing of sheave plate (18a) is widened. A suction dust exhaust fan (25) capable of changing the driving speed is provided above the chaff sheave (18), and the suction dust exhaust fan (25) is driven as the treatment layer thickness detected by the layer thickness sensor (36) increases. configuration speed is accelerated and the請 Motomeko 1 or claim 2 threshing apparatus according. Each sheave plate (18a) 請 Motomeko 1 or claim 2 or claim 3 threshing apparatus according to a modified configurable maximum distance between.

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