JP3578732B2 - Threshing equipment sorting equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sorting device for a threshing device for mounting a combine or the like, and more specifically, a plurality of chaflip plates, which are juxtaposed to form a chaff sheave, are swingably pivoted around a horizontal axis at an upper end thereof in a sheave case. In addition to supporting and linking, these chaff flip plates are interlockingly connected in a state of swinging integrally, so that the opening degree of the chaff sheave is changed by swinging of the chaff flip plate, and swings together with the chaff flip plate. A restricting lever that engages with the pin and restricts the swing of the chaff flip plate to the large opening side is provided so as to be fixed in a freely changing swing position, and the maximum opening of the chaff sheave is adjusted by changing the swing position of the regulating lever. The opening is automatically changed by the weight of the processed material acting on the chaff sheave by interposing a spring between the regulating lever and the pin that urges the chaff sheave to the closing side. An apparatus that is configured to.
[0002]
[Prior art]
In the conventional sorting apparatus, as seen in Japanese Patent Application Laid-Open No. H10-155346, that is, as shown in FIG. The spring 31 is provided so that the force F acts on the pin 32 in a direction inclined more greatly than the direction orthogonal to the chaflip plate 17A. That is, the direction of action of the urging force F by the spring 31 and the chaflip plate 17A are formed. The angle θ is set to be substantially smaller than 90 degrees so that the biasing force F by the spring 31 can be adjusted.
[0003]
[Problems to be solved by the invention]
However, according to the above-mentioned conventional technique, as shown in FIG. 8, when the regulating lever 33 is swung to the minimum opening adjustment position, the angle θ between the action direction of the urging force F and the chaflip plate 17A is formed. Becomes very small, and the urging force F acts on the pin 32 almost in the direction along the chaflip plate 17A, and the swing force f in the swing direction of the chaflip plate 17A, which is the component force of the urging force F, is reduced. There was a tendency to be extremely small. This means that when the regulating lever 33 is swung to the minimum opening adjustment position, the opening of the chaff sheave 17 is maximized with a slight increase in the amount of processed material. The degree to which the degree is not automatically changed is small, and there is a tendency that the chance that the degree of opening is maximized always increases.
[0004]
By the way, the above-mentioned conventional technology is developed for a small-size combine threshing apparatus having a small amount of processed material such as two-row cutting and three-row cutting and having a relatively small fluctuation width of the processed material. When applied to a large threshing apparatus in which the fluctuation amount of the processed material is large, the above tendency becomes large.
Therefore, by adjusting the biasing force of the spring, even if there is a large variation in the amount of the processed material, it is desired to accurately perform the automatic adjustment of the opening in response to the weight of the processed material when the regulating lever is in the minimum opening adjustment state. However, in this case, it is necessary to adjust the biasing force of the spring each time the maximum opening is adjusted by the regulating lever, so that the workability is poor.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a desired automatic opening so that even when the regulating lever is set to the minimum opening adjustment state, the opening can be adjusted to the weight of the processed material without adjusting the urging force of the spring. The point is that the degree adjustment can be performed well.
[0006]
[Means for Solving the Problems]
The features, operations and effects of the sorting apparatus for a threshing apparatus according to the present invention according to claim 1 are as follows.
[0007]
〔Characteristic〕
A plurality of chaflip plates, which are juxtaposed to constitute a chaff sheave, are pivotally connected to the sheave case at their upper ends so as to be swingable around a horizontal axis, and these chafflip plates are interlockingly connected so as to swing together. The opening of the chaff sheave is changed by swinging the chaff flip plate, and the swing of the chaff flip plate is restricted by engaging with a pin that swings integrally with the chaff flip plate. The restricting lever is provided so as to be capable of changing the pivoting position so that the maximum opening degree of the chief sheave is adjusted by changing the pivoting position of the restricting lever. A sorting device for a threshing device configured to automatically change an opening degree by a weight of a processed material acting on a chaff sheave with a spring being urged, wherein the regulating lever is Lies in that is provided with the spring in a state to act on the pin in a direction substantially orthogonal to the biasing force against the tea flip board in a state of being swung position to degrees maximum adjustment position by the spring.
[0008]
[Action]
As shown in FIG. 7, the urging force F of the spring 31 is applied to the pin 32 in a direction substantially orthogonal to the chaflip plate 17A in a state where the regulating lever is swung to the opening maximum adjustment position. Since the spring 31 is provided, even in a state where the regulating lever 33 is swung to the minimum opening adjustment position, the angle θ between the chaflip plate 17A and the acting direction of the urging force F is sufficiently ensured, The swing power f, which is a component force in the swing direction of the urging force F, can be suppressed from being reduced, so that the swing power f can be made sufficient.
[0009]
〔effect〕
Therefore, the swinging force can be sufficiently secured even in the state where the regulating lever is swung to the minimum opening adjustment position without adjusting the urging force of the spring. The automatic change of the opening of the chaff sheave can be performed reliably and satisfactorily, and the desired sorting performance can be improved.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, the combine connects a cutting unit C to a front part of a traveling machine body B traveling by a pair of right and left crawler traveling machines A so as to be able to move up and down, and a threshing device D and a grain tank E And a boarding operation section F is formed at the front of the grain tank E.
[0011]
As shown in FIG. 2, the threshing device D includes a threshing unit D1 that performs threshing on the ears of a harvested grain culm that is nipped and conveyed in a lateral orientation by a feed chain 1 disposed on the left side thereof. A sorting unit D2 that performs a sorting process on the processed product from the threshing unit D1, a first product collection unit 9 that collects the first product among the processed products sorted by the sorting unit D2, and a second product And a second product recovery unit 10 for recovering the.
[0012]
The threshing unit D1 is formed on the handling cylinder 2 that is driven to rotate around the horizontal axis P1 in the front-rear direction, the receiving net 3 provided on the lower side of the handling cylinder 2, and the rear of the receiving net 3. The handling cylinder 2 is provided with a dust sending port 4, and the handling cylinder 2 separates grains from the harvested grain culm held and transported by the feed chain 1 into single grains, and receives the single grains and broken straws. In addition to allowing the net 3 to leak to the sorting unit D2, the grains and broken straw that did not leak from the receiving net 3 are discharged from the dust outlet 4 to the sorting unit D2.
[0013]
The sorting unit D2 is a sheave case disposed below the receiving net 3 in a state where the left and right sides on the front side are suspended and supported by a support arm 5 that can swing back and forth around a horizontal axis P2 facing left and right. 6 and a Karaoke 7 arranged below the sheave case 6 in front of the sheave case 6. The sheave case 6 is swingably driven by the operation of an eccentric drive mechanism 8 arranged at the rear of the sheave case 6. By doing this, the sieving and sorting are performed on the processed material from the threshing unit D1, and the Karamin 7 supplies the sifting air toward the sieve case 6 so that the processed material sieved and sorted by the sieve case 6 is removed. Wind sorting.
Then, by these sorting operations, the processed material from the threshing unit D1 is converted into a grain as the first product, a mixture of the grain as the second product and the straw, and a straw as the third product. And so on.
[0014]
The first product recovery section 9 directs the recovered first product to a lifting screw 12 (see FIG. 1) that is connected to the right end thereof by a first screw 11 that is provided at the bottom thereof in a left-right direction. It is configured to be transported.
The second product recovery unit 10 is configured to convey the recovered second product to a second reduction screw 14 connected to the right end thereof by a second screw 13 disposed at the bottom thereof in a left-right direction. Have been.
[0015]
In addition, the said lifting screw 12 is comprised so that the 1st thing conveyed by the 1st screw 11 may be pumped up and supplied to the said grain tank E from above. In addition, the second reduction screw 14 is configured to lift up the second product conveyed by the second screw 13 and reduce the second product to the sheave case 6.
[0016]
As shown in FIGS. 2 and 3, the sheave case 6 includes a first Glen pan 15 provided at an upper front end and a plurality of rear ends extending in a state of being connected to the rear end of the first Glen pan 15. A first sieve wire 16, a first chief sheave 17 disposed to extend rearward from below the first sieve wire 16, and a first chief sheave 17 disposed above the rear half of the first chief sheave 17. A second grain pan 18, a first straw rack 19 and a plurality of second sieve wires 20 extending rearward from the second grain pan 18, and are arranged in a state of being connected to a rear end of the first chaff sheave 17. The second chaff sheave 21, a second straw rack 22 arranged in a state of being connected to the rear end of the second chaff sheave 21, a third Glen pan 23 arranged below a front portion of the first chaff sheave 17, and a third The And a Gurenshibu 24 arranged in a state connected to the rear end of Npan 23.
In the sheave case 6, at a position in front of the first chaff sheave 17, a first air which is supplied from the Karamin 7 supplied through a first air passage 25 and flows toward the first sieve line 16. An opening 6 </ b> A and a second opening 6 </ b> B through which the sorting wind supplied from the Karamin 7 supplied through the second air passage 26 flows toward the first chaff sheave 17 are formed.
[0017]
The first Glen pan 15 receives the processed material leaked from the first half of the receiving net 3 and transports the processed material rearward while sorting the specific gravity difference.
The first sieve wire 16 is used to roughly sort heavy particles and the like from among the processed material leaked from the front and rear intermediate portions of the receiving net 3 and the processed material transferred by the first Glen pan 15 while allowing them to fall. The remaining processed material is transported rearward.
The first chaff sieve 17 roughly sorts the grains and the like from the processed material leaked from the rear part of the receiving net 3 and the processed material passing through the first sieve wire 16 and leaks the remaining processed material. Is transported backward.
The first straw rack 19 sieves and sorts grains and the like out of the processed material discharged from the dust outlet 4 and transfers the remaining processed material backward. I have.
The second Glen pan 18 is configured to transfer the processed material leaking from the first straw rack 19 rearward while sorting the specific gravity difference.
The second sieving wire 20 roughly separates grains and the like from the processed material transferred by the second Glen pan 18 and the processed material passed through the first straw rack 19, and causes the remaining processed material to fall. Is transported rearward and upward.
The second chaff sieve 21 roughly sorts grains and the like from the processed material transferred by the first chief sieve 17 and the processed material leaked from the second sieve wire 20, and leaks to the second product recovery unit 10. In addition to the lowering, the remaining processed material is transported rearward.
The second straw rack 22 sieves and sorts grains and the like out of the processed material transferred by the second sieve wire 20 and the second chaff sieve 21 and leaks them to the second product recovery unit 10, while remaining the remaining. Straw with a low specific gravity is transported backward and discharged outside the machine.
The third Glen pan 23 transports the processed material leaked from the front part of the first chaff sheave 17 rearward while sorting the specific gravity difference.
The grain sieve 24 carefully sorts the kernels from the processed material transferred by the third Glen pan 23 and the processed material leaked from the rear side of the first chaff sheave 17 and causes the grain to leak to the first product recovery unit 9, The remaining processed material is transported backward and supplied to the second product recovery unit 10.
[0018]
Reference numeral 27 in FIGS. 2 and 3 denotes an outflow prevention plate for preventing the processed material leaked from the second sieve wire 20 from flowing out from the first opening 6A. This is a perforated plate that prevents the processed material leaked from the front end of the first chaff sheave 17 from flowing out of the second opening 6B while allowing the flow of the sorting wind.
[0019]
As shown in FIGS. 3 to 6, the first chaff sheave 17 includes a plurality of chaff flip plates 17A juxtaposed at predetermined intervals in the front-rear direction. In addition to being pivotally connected to the left and right side walls 6C of the sheave case 6 via the connecting member 29, the chaflip plates 17A are interlockingly connected by the second connecting member 30 so as to swing together by the second connecting member 30, thereby forming the chaflip plates 17A. The opening degree is changed by the integral swing of.
Further, the first chaff sheave 17 includes a spring 31 using a tension coil spring that elastically urges the chaff flip plate 17A to the closing side. In other words, the larger the weight of the processed material deposited on the upper side and the larger the weight, the larger the opening degree in a state in which the weight is substantially proportional to the weight of the processed material, and the smaller the weight of the processed material on the lower side and the smaller the weight. The degree of opening is automatically changed in accordance with the weight of the workpiece in such a manner as to be reduced in a state substantially proportional to the weight of the workpiece by the biasing force of the spring 31.
[0020]
In the second connecting member 30, the pin 32 connected to the left end of the free end of the predetermined chaflip plate 17 </ b> A has a long end whose left end extends from the second connecting member 30 to the left outside. Things have been adopted. On the other hand, the left side wall 6C of the sheave case 6 is formed with an elongated hole 6a that allows the movement of the pin 32 in accordance with the opening / closing operation of the first chief sheave 17.
The long hole 6a is formed in an arc shape centered on the horizontal axis P3, which is a swing fulcrum of the chaflip plate 17A on which the long pin 32 is mounted, and the pin 32 contacts the upper end thereof. In the state, the first chief sheave 17 is in the minimum opening state (almost fully closed state), and when the pin 32 is in contact with the lower end thereof, the first chief sheave 17 is in the maximum opening state (fully open state). The movement of the pin 32 accompanying the opening / closing operation of the first chaff sheave 17 is regulated.
[0021]
A restricting lever 33 for setting the maximum opening of the first chaff sheave 17 on the lateral outer side of the left side wall 6C of the sheave case 6, that is, restricting the swing of the chaff flip plate 17A to the large opening side. Is deployed.
[0022]
On the left side wall 6C of the sheave case 6, at a predetermined position between the support shaft 34 of the first connecting member 29 that supports the predetermined chafflip plate 17A to be able to swing around the horizontal axis P3 and the long hole 6a. A fulcrum pin 6b for supporting the regulating lever 33 so as to be swingable around the horizontal axis P4 is projected. An elongated hole 33a is formed at a position on the swing fulcrum side of the regulating lever 33 to allow the movement of the pin 32 in accordance with the opening / closing operation of the first chief sheave 17.
[0023]
The spring 31 is stretched over a support piece 33 </ b> A bent and formed on the regulating lever 33 and the pin 32.
[0024]
On the left side wall 6C of the sheave case 6, the regulating lever 33 is fixedly held at a desired operation position by engaging with an engaging hole 33b formed at the free end of the regulating lever 33 which can be elastically deformed laterally outward. The six engaging protrusions 6c are provided at a predetermined pitch.
That is, when the engaging hole 33b of the regulating lever 33 is engaged with any one of the engaging projections 6c, the degree of overlap between the long hole 6a of the sheave case 6 and the long hole 33a of the regulating lever 33 according to the operating position. Appears, and the moving range of the left pin 32 in the predetermined chaff flip plate 17A is restricted. In other words, the regulating lever 33 regulates the minimum opening of the first chief sheave 17 as well.
[0025]
The minimum opening of the first chief sheave 17 can be set to a smaller opening so that the engaging hole 33b of the regulating lever 33 is engaged with the engaging projection 6c on the upper front side. The degree of opening can be set so large that the mating hole 33b is engaged with the rear lower engaging projection 6c.
[0026]
As shown in FIGS. 3 to 5, on the left outer side of the sheave case 6, a fulcrum projecting from a left wall 6 </ b> C of the sheave case 6 is connected to a predetermined chaflip plate 17 </ b> A via a left pin 32. By being supported by the pin 6b so as to be able to swing around the horizontal axis P4, the shaft extends in the direction opposite to the direction in which the predetermined flip plate 17A extends. A counter weight 35 for preventing the weight of the flip plate 17A group from swinging is provided.
[0027]
It should be noted that a reference numeral 35a in FIGS. 4 and 5 indicates that when the opening of the first chaff sheave 17 is changed, the predetermined chafflip plate 17A having a different fulcrum position and the counter weight 35 swing together. A long hole is formed in the connecting portion of the counter weight 35 with a predetermined chaflip plate 17A so that the pin 32 connecting them can be displaced with respect to the counter weight 35.
[0028]
As shown in FIG. 3, the regulating lever 33 and each of the engaging projections 6c face an inspection port 36 formed on the left side wall of the threshing device D. The operation of changing the engagement position of each of the restriction levers 33 with each of the engagement protrusions 6c for setting the maximum opening of the first chief sheave 17 according to the degree of wetting can be easily performed.
[0029]
Then, as shown in FIG. 7C, the spring 31 applies the urging force F in a direction substantially orthogonal to the chaflip plate 17A in a state where the regulating lever 33 is swung to the maximum opening adjustment position. It is provided to act on the pin 32. That is, when the regulating lever 33 is in the swinging position at the maximum opening position, the angle θ between the chaflip plate 17A and the acting direction of the urging force F is substantially 90 degrees.
Therefore, as shown in FIG. 7, even if the regulating lever 33 is swung to the opening minimum adjustment position as well as the opening intermediate adjustment position, the angle θ can be maintained at a sufficiently large value. As a result, It is possible to sufficiently secure the oscillating force f, which is a component of the urging force F in the oscillating direction.
[0030]
[Another embodiment]
In the above-described embodiment, the maximum opening adjustment position of the restriction lever 33 is changed in a plurality of steps. However, the maximum opening adjustment position of the restriction lever 33 may be changed in a stepless manner.
[0031]
In the above embodiment, a tension coil spring is provided as the spring 31, but a compression coil spring may be used as the spring 31.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine. FIG. 2 is a vertical side view of a threshing device. FIG. 3 is a vertical side view of a main part. FIG. 4 is a developed vertical side view showing a relationship between a first chaff sheave and a regulating lever. 5 is a cross-sectional plan view of the main portion of the first chaff sheave. FIG. 6 is a vertical sectional front view of the main portion of the first chaff sheave. FIG. FIG. 8 is a diagram showing the relationship between the urging force, the chaflip plate, and the oscillating force when the regulating lever in the related art is oscillated at each opening adjustment position.
6 Sheave case 17 Chaf sheave 17A Chaflip plate P3 Horizontal shaft core 32 Pin 33 Regulation lever 31 Spring F Biasing force

Claims (1)

At the upper end, each of the plurality of chaff flip plates that are juxtaposed to form a chaff sheave is pivotally connected to the sheave case so as to be swingable around a horizontal axis, and the chaff flip plates are linked to each other in a state of swinging integrally. The opening degree of the chaff sheave is changed by swinging the chaff flip plate, and the swinging of the chaff flip plate to the large opening side is restricted by engaging with the pin swinging integrally with the chaff flip plate. The restricting lever is provided so as to be capable of changing the pivoting position so that the maximum opening of the chief sheave is adjusted by changing the pivoting position of the restricting lever, and the chief sheave is pivoted to the closed side between the restricting lever and the pin. A sorting device for a threshing device configured to automatically change an opening degree by a weight of a processed material acting on a chaff sheave with a spring for urging interposed therebetween. Sorting apparatus in degrees maximum adjustment position the spring the provided Aru threshing apparatus in a state to act on the pin in a direction substantially orthogonal to the biasing force against the tea flip plate by spring in a state of being swung located.

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