JP3584113B2 - Oscillating sorter in threshing machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rocking sorter in a threshing machine, and in particular, a sheave group having a variable opening is juxtaposed at the end side of a non-porous transfer plate of a rocking sorter installed in a sorting air path, By adjusting the opening degree of the group, the leak start position of the transferred object is automatically adjusted as appropriate according to the amount of the object remaining on the rocking sorter. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rocking and sorting apparatus in a threshing machine in which the thickness is kept constant.
[0002]
[Prior art]
Generally, in a threshing machine having a wind sorting chamber at the rear of the handling cylinder in the axial center direction and having a swing sorting body erected in a sorting wind path formed toward the wind sorting chamber from the lower front of the handling cylinder, Separation and separation of processed materials into first-class, second-class, and other debris such as rice husks by the specific gravity sorting action of the swing sorting body by the back and forth swinging motion and the wind sorting action by the sorting wind that blows through the sorting wind path. After dropping the first thing to the first gutter and collecting it in the paddy tank by a fryer, the second thing is dropped to the second gutter and returned to the rocking sorter by the second reduction cylinder and re-selected. The rice husks are sucked by a suction fan in a wind selection chamber and discharged out of the machine through a dust outlet at the rear of the machine.
[0003]
In the specific gravity sorting operation by the swing sorter as described above, in the transfer sorting path, the grains are separated through sufficient transfer swing motion so that impurities such as grain are located in the lower layer and rice husks are located in the upper layer. It is important to extend this transfer sorting path toward the rear of the fuselage to obtain a highly accurate specific gravity sorting action, especially when the transfer amount of the processed material is relatively small. It has been found that it appears remarkably.
And as a specific sorting operation of the first thing of the swing sorting body, a non-hole transfer plate is arranged on the swing start end side, and a plurality of Glen sheaves are arranged on the swing end side behind the swing sorter. The upper sorting section and the crimping net disposed below the upper sorting section are oscillated relative to each other, so that the first object is leaked to the gutter first.
[0004]
However, in the configuration in which the threshing processing capacity is strengthened with the increase in the size of the threshing machine as in recent years, since the swinging motion of the rocking sorter is performed at a constant operation, the rocking sorter can be used when the threshing amount increases. The sorting capacity is relatively reduced, and the thickness of the stagnation layer of the processed material from the upper sorting section to the grain sieve is increased. In the case where the amount of threshing is small, the sorting ability of the rocking sorter is relatively high, so that the processed material from the upper sorting section to the grain sieve is relatively high. As the thickness of the stagnation layer decreases, the amount of reduction to the second gutter by the wind selection increases, which not only hinders the wind selection in the second gutter, but also causes differences in varieties of rice, wheat, etc. Whether or not there is wet or wet handling work, or the granularity that forms the transfer sorting path It was those of the opening, the magnitude of sorting Wind winnowing fan, various factors increases the degree of incorporation of contaminants by intertwining complex etc., containing the problem.
[0005]
[Problems to be solved by the invention]
The present invention has been conceived in view of the above situation to solve the conventional problems, and has as its object the necessity for the specific gravity sorting action when the transfer amount of the processed material is small. When the transfer amount of the processed material increases while the transfer sorting path can be secured long enough, the leak start position and the leak amount of the processed material in the transfer sorting route are transferred without holes. Depending on the increase or decrease of the thickness of the stagnation layer of the processed material from the end of the plate to the rear grain sieve, it is appropriately changed to reduce the contamination of contaminants as much as possible. It is an object of the present invention to provide an oscillating and sorting apparatus in a threshing machine capable of always maintaining a smooth flow.
[0006]
[Means for Solving the Problems]
To solve the problem, a first technical means of the present invention is employed, the screening air passage provided below the threshing chamber, in formed by arranging the swing sorting body threshing machine, the swing sorting the end side of the imperforate transfer plate to form a body, independent juxtaposed a plurality of sheaves toward the rear of the transport direction, and arranged to have a sieve, for each of a plurality of sheaves groups leading to front or al later stage with a variable opening to the total group of sheaves in the fully closed position, when sequentially open fully open position toward the rear stage to the preceding stage in each group, the sheave group in the variable opening state Until the predetermined opening degree is reached, the opening degree of the next and subsequent sheave groups is held at the fully closed position .
[0007]
The As 2 technical means, the sorting air passage provided below the threshing chamber, in formed by arranging the swing sorting body threshing machine, terminating imperforate transfer plate forming the oscillating sorting member In addition, a plurality of sheaves are juxtaposed rearward in the transfer direction, and the juxtaposed sheaves are independently variable in opening degree for each of a plurality of groups of three or more stages from a front stage to a rear stage. A sensor that detects the thickness of the stagnant layer of paddy on the hole transfer plate is also provided, and when the sensor detects an increase in the stagnant layer thickness of a predetermined thickness or more, the sheaves of all groups in the fully closed position are subjected to the above-described operation. from I Ri later stage the increase in magnitude of the detection layer thickness sequentially open for each group towards the front, and to sheaves group in the controlled state of the variable opening reaches a predetermined opening, the following stages of the sheave The opening degree of the group is maintained at the fully closed position.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In FIG. 1, reference numeral 1 denotes a handling room of a threshing machine mounted on a traveling body (not shown). In the handling room 1, a handling cylinder 3 is mounted on a handling cylinder shaft 2 which is suspended in the longitudinal direction of the body. A layer thickness sensor 5 that is rotatably mounted on a shaft and that is rotatable up and down near the receiving net 4 stretched below the lower side of the receiving net 4 is provided. An oscillating sorter 8 composed of a plate-shaped non-porous transfer plate 6 and a plurality of sheaves 7, 7,... Have been.
[0009]
Below the rocking sorting device 10, there is formed a sorting wind path 13 composed of a karano 11 and a first flow plate 12, and a sorting wind A from below directed toward the rocking sorting device 10 that swings. The second item on the rack 15 is configured to be selected and separated by the selection wind B sent from the auxiliary Karin 14 disposed behind the selection air passage 13 by selecting the items. Impurities are discharged to the outside of the machine from a dust outlet 17 at the rear of the machine via a suction fan 16.
Reference numeral 18 denotes a first spiral, 19 denotes a second spiral, 20a and 20b denote wind direction plates, and 21 denotes a second flow plate.
[0010]
As shown in FIGS. 2 to 4, the swing sorting apparatus 10 has an upper non-porous transfer plate 6 stretched over the upper surfaces of swing side plates 22a and 22b spaced apart from each other in the left-right direction of the fuselage. A plurality of sheaves 7, 7,... Having variable opening degrees are arranged side by side from the section toward the rear in the transfer direction to form a swing sorting body 8, and a lower solid hole is provided at a position below the swing sorting body 8. The transfer plate 23 is disposed in parallel, and the crimp net 9 is stretched in one plane on auxiliary brackets 24, 24 that can swing back and forth and extend from the end to the rear at the left and right positions. ing.
[0011]
The upper ends of the sheaves 7, 7 are fixed at predetermined intervals to pivot rods 25, 25 penetrating between the swinging side plates 22a, 22b, respectively, and each lower end is formed of three connecting plates. 26a, 26b, and 26c are connected to form a sheave group of a front group 7A, a center group 7B, and a rear group C, and are mounted between the connection plates 26a to 26c and the swing side plates 22a, 22b. The sheaves 7, 7... Of the sheave groups 7A, 7B, 7C are grouped by the coil bullets 27, 27, 27 in the expanding direction in which the degree of opening increases from the pivot rods 25, 25. , And each of the sheave groups 7A, 7B, 7C has one rotation among the rotation rods 25 for fixing the sheaves 7, 7,... The rod 25a extends outward from the swing side plate 22a and has a pivot Respectively shaft-supporting arm 27a, 27b, 27c and, further on the tip of the each rotational arm 27a~27c is cam roller 28a which is provided around the guide grooves 28, 28b, 28c are pivotally supported.
[0012]
Further, on the outer surface of the one side plate 22a, a rocking cam plate 30 integrally formed with a rack gear 29 on the lower edge of the tip is provided with support rollers 30a, 30b projecting from the side plate 22a. The front cam portion 31, the central cam portion 32 and the rear cam portion 33 are formed along the upper edge of the oscillating cam plate 30 so as to be able to advance and retreat in the front-rear direction. Into the guide grooves 28 of the cam rollers 28a, 28b, and 28c, and rotate the rotating arms 27a, 27b, and 27c individually in the up and down directions to separate the sheaves 7 fixed to the rotating arms 27a to 27c. The rotation operation is transmitted to the other sheaves 7, 7,... Forming the front group 7A, the center group 7B, the rear group C, respectively, via the connecting plates 26a to 26c, and the sheaves 7, 7,. Open and close… And it has a formation.
[0013]
Similarly, a gear motor 35 having a pinion gear 34 meshing with the rack gear 29 of the swing cam plate 30 protruding outward is fixed on the inner surface of the one swing side plate 22a. A pulse signal of a required count, which is transmitted through a CPU 36 described later in response to a change in the detection signal from 5, is transmitted to the gear motor 35 to control the forward and backward movement of the swing cam plate 30.
[0014]
On the other hand, the auxiliary brackets 24, 24, which can swing back and forth, which support the crimp net 9, have elongated holes 38, 39 formed in the swinging side plates 22a, 22b with support pins 37a, 37b at front and rear separated positions. The mesh driving plate 40, the connecting rod 41, and the distal end side are connected to the connecting pin 43 of the swing cam plate 30 through the elongated hole 42, and penetrate and protrude outward. The link mechanism 45 including the driving rod 44 connects the sheaves 7, 7,... Through the swing cam plate 30 with the opening movement of the sheaves 7, 7,.
[0015]
Reference numeral 46 denotes a potentiometer fixedly mounted on the swinging side plate 22a below the crimped net 9 at the stretched position, and a rotation base end of a detection rod 48 having an engagement pin 47 protruding at a tip thereof is connected to the potentiometer 46. The engaging pin 47 of the detection rod 48 is engaged with the notch groove 49a of the engagement rod 49 which is supported by the actuator shaft 46a and is integrally hung from the lower edge of the main body of the swing cam plate 30 to perform the swinging operation. The swinging movement amount of the cam plate 30 is detected as a rotation displacement amount by a potentiometer 46 and, as shown in FIGS. 5 and 6, a liquid crystal panel monitor 52 disposed on a panel surface 51 of a driving operation unit 50 via a CPU 36. The state of the swing sorting operation is displayed.
Reference numeral 53 shown in FIG. 6 is a group of switches such as a main switch, a reaping clutch SW, and a work clutch SW arranged on the panel surface 51.
[0016]
Next, a control operation of the swing sorting device 10 including the CPU 36 will be described with reference to FIGS.
First, the setting dial 54 provided on the panel surface 51 of the driving operation unit 50 shown in FIG. 5 is a rotation switching type setting dial. As shown in FIG. The purpose of setting the upper and lower ranges X and Y of the reference layer thickness Tref according to the threshing ability in the rank L (0 to 9) under the setting of each "rice" and "wheat" in addition to the threshing condition of "wheat" If the setting dial 54 is set to “rice” or “wheat” first, a reference layer thickness Tref specified by the current sheave opening rank is set. The travel speed and its speed range (speed range from low speed to high speed) are set at the same time.
[0017]
Then, after confirming the switching position of the setting dial 54, the sheave opening degree (turning rank A) at the time of turning the aircraft according to the switching position is set, and any one of the low speed, the standard speed, and the high speed during traveling of the aircraft is set. Is determined, the automatic setting of the sheave opening change range (upper and lower ranks) of the actual speed in the cutting state is performed.
[0018]
The above-described condition setting is performed in a series of swing sorting control processes shown in FIG. That is, the above conditions are set with the setting dial 54, and when the work clutch SW of the switch group 53 arranged on the panel surface 51 is turned on, it is first determined whether or not the mowing work is being performed.
Then, as the threshing operation proceeds, the layer thickness sensor 5 sequentially detects the layer thickness H of the processed material on the rocking sorter 8, and when the layer thickness exceeds a predetermined layer thickness H1, a layer thickness increase flag is set in the CPU 36. When the layer thickness H exceeds the upper limit range X of the reference layer thickness Tref set in the condition setting, and the layer thickness H exceeds the upper limit range X of the reference layer thickness Tref, the setting dial 54 and the actual speed are set after the elapse of a predetermined time of the timer T1. The set sheave opening rank L is automatically raised by one step, and the timer T1 is restarted.
[0019]
Thereafter, the detection data from the potentiometer 46 for grasping the current position of the oscillating cam plate 30 is compared with the set value of the rank L raised one step, and the rotation direction and the rotation drive amount of the gear motor 35 are changed. A control operation is performed so as to automatically adjust the opening of the sheaves 7, 7,....
In the state where the cutting operation is not being performed during the running of the machine, that is, when the cutting operation is stopped and the machine is turning, the layer thickness H of the processed object is determined under the above-mentioned condition setting after a lapse of a fixed time from the stop of the cutting. Then, a comparison is made with the turning reference layer thickness H2 associated with the set speed range, and a control operation is performed to determine whether or not to set the layer thickness increase flag “0” of the turning rank A.
[0020]
The basic control operation of the swing sorting apparatus 10 configured as described above will be described below.
4 and 10, when the threshing operation is started while the mowing operation is being performed by the machine running first, the front groups A to A forming the rocking sorting body 8 until the predetermined thickness H1 is reached by the detection of the thickness sensor 5. Each of the sheaves 7, 7,... Of the rear group C is held at the minimum opening degree (fully closed position) shown in FIG.
[0021]
Then, as the threshing operation proceeds, the layer thickness H of the processed material on the oscillating sorter 8 gradually increases beyond the predetermined layer thickness H1, and becomes the layer thickness H exceeding the upper limit range X of the reference layer thickness Tref. At this time, a required number of pulse drive signals are sent from the CPU 36 to the gear motor 35, and the rocking cam plate 30 moves linearly from the position of FIG. 4 in the direction of the arrow shown in FIG. I do.
[0022]
With the movement of the oscillating cam plate 30, the cam roller 28c located at the upper stage of the rear cam portion 33 of the oscillating cam plate 30 relatively moves to the middle region of the bevel, and the rotating arm 27c turns downward. And the sheave 7 'also pivots downward with the pivot rod 25a as a base point, and the other sheaves 7, 7, 7 rotate synchronously via the connecting plate 26c in conjunction with the rotation of the sheave 7'. Will be. At this time, the cam rollers 28a and 28b located at the upper stage of the front cam portion 31 and the center cam portion 32 also relatively move similarly to the cam roller 28c, but the cam rollers 28a and 28b are still at the upper stage of the respective cam portions 31 and 32. .. Of the front group A and the center group B are kept at the initial minimum opening degree.
[0023]
Therefore, as shown in FIG. 10A, during the swinging movement of the swing sorting body 8, the shedding amount of the processed material increases due to the change in the opening degree of the sheaves 7 'and 7 of the rear group C, and as a result, the lower layer The actual layer thickness H approaches the reference layer thickness Tref in which impurities such as rice husks and the like are located in the upper layer.
In the opening control operation of the sheaves 7 ′ and 7 of the rear group C as described above, the crimp net 9 connected to the swing cam plate 30 via the link mechanism 45 is in the direction indicated by the arrow in FIG. Go to That is, the distance between the tip 9a of the crimp net 9 and the slope of the first flow plate 12, which is shown as the distance S in FIG.
[0024]
Then, a part of the processed material on the crimp net 9 whose leakage amount has increased flows down to the most gutter side along the slope of the first flow plate 12 from the interval S1, and the processed material on the crimp net 9 concerned. Is maintained at a constant thickness, and the wind-down force, which is stronger than the blow-through effect on the processed material forming a layer on the crimp net 9, acts on the flowing-down processed material. As a result, the processed material in the flow-down process is subjected to the sorting operation on the flow plate 12 first.
[0025]
FIGS. 11 to 13 show the front group A, the center group B, and the rear group C according to the change in the condition setting and the swing control setting when the processing amount of the threshing operation increases. 11 shows the gradual change of the sheave opening. In FIG. 11, the sheaves 7 ′, 7... Of the rear group C maintain the maximum opening (full open position) , that is, the cam roller 28 c .. Of the center group B are in the state of variable opening due to the cam roller 28b being positioned on the oblique edge of the center cam portion 32, and the sheaves 7 ', 7. This indicates that the crimping net 9 is kept at the minimum opening degree, and accordingly, the leading edge of the crimping net 9 is further expanded at the interval S2 between the crimping net 9 and the first flow plate 12.
[0026]
12, only the front group A has the sheaves 7 ', 7... Of the front group A in the variable opening state due to the cam roller 28a being positioned on the oblique edge of the front cam portion 31, and the other central group B , The rear group C is kept at the maximum opening, and the leading edge of the crimp net 9 is widened at the interval S3 between the crimp net 9 and the first flow plate 12, and in FIG. B and C show the case where the maximum opening degree, that is, the threshing capacity is maximum, and the leading edge of the crimping net 9 is also widened at the maximum interval S4 between the crimping net 9 and the first flow plate 12.
[0027]
Here, a description will be given of a control operation in a case where the rocking sorter 10 driven by the basic control operation as described above is adapted to the threshing work of “rice” and “wheat”.
[0028]
FIG. 14A shows the relationship between the sheave opening degree θ and the detection layer thickness T in rice. In the threshing work of “rice”, the front group 7A and the central group forming the rocking sorter 8 are shown. The opening of each sheave of the rear group 7B and the rear group 7C is set to θ1, θ2, and θ3 in the initial state, respectively, and the magnitude of each opening holds the relationship of θ1 <θ2 <θ3.
[0029]
When the detection operation of the layer thickness sensor 5 results in the layer thickness H exceeding the upper limit range X of the reference layer thickness Tref, the reference thickness is determined based on different opening change amounts preset for each of the groups 7A, 7B, and 7C. As the layer thickness Tref changes to T1, T2, T3,..., The sheave opening of each group is controlled so as to increase in synchronization with the maximum opening in a stepwise manner.
[0030]
Further, in the threshing operation of "wheat", the opening degree of the sheaves 7, 7,... Of each of the groups 7A, 7B, 7C is determined by comparing the absolute value of the control operation with the above-mentioned "rice". The opening degree is set to be approximately 1/2 in consideration of the mixing of the rods, the mixing of the "boss", and the like. As shown in FIG. 7B, the front group 7A, the center group 7B, and the rear group 7C Is set to the fully closed state in the initial state, and when the detection operation of the layer thickness sensor 5 exceeds the reference layer thickness Tref, first, the rear group 7C switches to the variable opening degree state, As the layer thickness Tref changes to T1 and T2, the maximum opening degree of the sheaves 7, 7,... Differs for each group based on the opening degree change amount preset in the order of the central group 7B and the front group 7A. The control is performed so as to gradually increase up to θ1, θ2, and θ3.
[0031]
【The invention's effect】
In summary the present invention this is the screening air passage provided below the threshing chamber, in formed by arranging the swing sorting body threshing machine, the end side of the imperforate transfer plate forming the oscillating sorting member , together with the transport direction of the rearward juxtaposed a plurality of sheaves, and the juxtaposed the sieve, and independently variable opening for each of the plurality of sheaves groups leading to front or al later stage, the fully closed position all groups of the sheave, when sequentially open fully open position toward the rear stage to the preceding stage in each group, until sheave group in the variable opening state reaches a predetermined opening, the following stages of the sheave in Since the opening of the group is kept at the fully closed position, and a sensor for detecting the thickness of the stagnant layer of the rice hulls on the non-porous transfer plate is also provided, the processing to be transferred by the variable opening of the sheave group is performed. Automatically adjusts the leak start position of the object according to the amount of the material remaining on the non-porous transfer plate. Thus, the thickness of the stagnation layer of the processed material on the non-porous transfer plate can be kept constant, and a highly accurate specific gravity sorting action can always be obtained regardless of the amount of threshing. It has a new effect.
[Brief description of the drawings]
FIG. 1 is an overall side view of a threshing machine. FIG. 2 is a side view of a swing sorting device. FIG. 3A is a plan view showing the arrangement of a crimp net, a swing cam plate, a swing side plate, and the like. FIG. 4 is a plan view of a main part showing an arrangement of a gear motor, a swing cam plate, and a potentiometer. FIG. 4 is an enlarged side view of a main part showing a configuration of a swing sorter with a part cut away. FIG. FIG. 6B is a plan view of a liquid crystal panel monitor. FIG. 6 is an explanatory view showing a switch group, a gear motor, a potentiometer, and a connection between the liquid crystal panel monitor and a CPU. FIG. 7 is a flowchart showing a flow of condition setting. 8 is a graph showing the relationship between the reference layer thickness and the rank. FIG. 9 is a flowchart showing the flow of the sorting control. FIG. 10 (a) is a partially omitted side view showing a variable sheave opening state of the rear group ( b) shows the moving state of the oscillating cam plate. FIG. 11 (a) is a partially omitted side view showing a variable opening state of the sheaves in the center group. FIG. 11 (b) is an operation explanatory view showing the moving state of the swing cam plate. ) Is a partially omitted side view showing a variable opening state of the sheaves of the front group. FIG. 13 (b) is an explanatory view of the operation showing the moving state of the oscillating cam plate. FIG. 13 (a) is a maximum opening of the sheaves of all the groups. FIG. 14 (b) is a partially explanatory side view showing the degree of movement, and is an explanatory view of the action showing the state of movement of the oscillating cam plate. b) is a graph showing the relationship between the sheave opening and the detection layer thickness in wheat.
A Sorting air path B Sorting air path 3 Handling cylinder 5 Layer thickness sensor 6 Non-porous transfer plate 7 Sheave 7 'Sheave 7A Front group 7B Central group 7C Rear group 8 Swing sorting body

Claims (2)

The screening air passage provided below the threshing chamber, in formed by arranging the swing sorting body threshing machine, the end side of the imperforate transfer plate forming the oscillating sorting body, the rear of the transport direction the sieve juxtaposed a plurality of sheaves, and juxtaposed toward, with the independently variable opening for each of the plurality of sheaves groups leading to front or al later stage, the entire group of sheaves in the fully closed position , when sequentially open fully open position toward the rear stage to the preceding stage in each group, until sheave group in the variable opening state reaches a predetermined opening, the opening of the sieve group following stages fully closed A rocking sorter in a threshing machine characterized in that it is held at a position. The screening air passage provided below the threshing chamber, in formed by arranging the swing sorting body threshing machine, the end side of the imperforate transfer plate forming the oscillating sorting body, the rear of the transport direction A plurality of sheaves are arranged side by side, and the sheaves arranged side by side are independently variable in opening degree for each of a plurality of groups of three or more stages from the front stage to the rear stage. A sensor for detecting the stagnation layer thickness is provided, and when the sensor detects an increase in the stagnation layer thickness greater than or equal to a predetermined thickness, the sheaves of all the groups in the fully closed position are changed in size according to the increase in the detection layer thickness. sequentially opening and to sheaves group in the controlled state of the variable opening reaches a predetermined opening degree, the fully closed position the following stages of the sheave group opening towards the front from by Ri later stage in each group A rocking sorter in a threshing machine characterized in that it is held.

Images