JPH0438679Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is designed to install the first grain sieve for leakage, which shakes and sorts the leakage from the handling room that has passed through the receiving net, at the rear of the grain pan. The present invention relates to a swing sorting device for a threshing machine, which is attached to a swing frame together with the grain pan in a state where the grain pan is positioned in the grain sieve, and is configured to be able to change the area for leakage of the first grain by the grain sieve.

[Conventional technology]

The rocking sorting device of the threshing machine described above is configured such that the area for leakage of the first grain by the grain sheave can be changed by, for example, changing the position of the entire grain sheave in the rocking feed direction with respect to the rocking frame. be.

If the amount of leakage from the handling room is large and the layer of leakage on the grain sieve becomes relatively thick,
By increasing the area for the first material leakage by the grain sieve, the grains that collect below the leakage material layer due to the oscillating feed operation can ride the end part of the oscillating feed of the grain sieve and enter the second material collection section. without falling into
This allows sufficient leakage to the first material collection section through the wide leakage area of the grain sieve. In addition, if the amount of leakage from the handling room is small and the layer of leakage on the grain sieve is relatively thin, it is possible to move the grain sieve to the swing feed start end to reduce the leakage area. In this way, it is possible to reduce the amount of cut straw that gets mixed into the first material collection section, which is caused by the cut straw jumping into an upright position due to the swinging feed operation and passing through the grain sieve.

Conventionally, in this type of threshing machine, as shown in FIG. As disclosed in Japanese Patent No. 176639, there is known a structure in which leakage from the receiving net is caused to fall onto the grain pan while being shaken by a chaff sieve provided above the grain pan.

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned conventional configuration, there is a risk that the following problems will occur, and there is room for improvement.

In other words, the threshing action on grain culms in the handling room is
Since most of the processing is carried out in the front half of the handling chamber, the leakage material that has passed through the receiving net 5' tends to fall onto the swing feed start end side of the grain pan 13'. Therefore, due to being oscillated on the grain pan 13' for a long period of time, the leakage material is diffused and the layer becomes thinner. Therefore, especially when the amount of leakage supplied from the handling room is small, as mentioned above, even if the area for leakage by the grain sieve 6' is made small, the jumping of cut straw etc. due to the swinging feed operation can be prevented. There is a possibility that the broken pieces are more likely to be mixed into the first material collection section.

In addition, if the amount of threshing processed temporarily fluctuates from a small amount to a large amount, conventional methods that simply have a fixed chaff sieve or directly leak into the grain pan will be unable to handle the situation. Even if the filtration area at the grain sieve is changed due to fluctuations, the processed material is transferred to the grain sieve without being corrected for the fluctuation, resulting in a time lag between the change in the filtration area and a good screening filtration effect. There was also a risk that the grain sieve sorting process would be carried out without this being done, and that straw waste etc. would get mixed into the product.

The present invention has been developed in view of the above-mentioned circumstances, and allows for efficient sorting according to the amount of threshing material leaking from the handling room, as well as preventing poor sorting due to temporary fluctuations in the amount of threshing. The purpose of the present invention is to provide a swinging sorting device for a threshing machine that can avoid such problems.

In order to achieve the above object, the swing sorting device for a threshing machine according to the present invention has the structure described above, and includes a chaff sheave whose opening ratio can be changed above the grain pan, and a chaff sheave whose opening ratio can be changed. When the mechanism and the mechanism for changing the area for most material leakage of the grain sheave are set to a large area for the most material leakage of the grain sheave, the opening ratio of the chaff sheave becomes large and the area for most material leakage of the grain sheave is set to a large value. A feature of the present invention is that the opening ratio of the chaff sheave is linked to become small when the lower area is set to be small.

The functions and effects of this characteristic configuration are as follows.

[Effect]

In other words, by reducing the opening ratio of the chaff sheave as the amount of leakage from the receiving net decreases, the leakage position of the leakage material on the grain pan will shift to the lower side of the swing feed, and The distance that leakage material moves on the grain pan due to the dynamic feeding operation is reduced, and the grain pan is no longer subject to the swinging motion as much, which suppresses the spread of leakage material and reduces the amount of waste material on the grain sieve. Since the area for particle leakage is also set to a small side, the layer thickness of the processed material on the grain sieve will not become extremely thin. If the amount of leaked material is large, contrary to the above, the distance the leaked material moves on the grain pan should be lengthened to diffuse the leaked material, and the area for leakage in the grain sieve should be made larger. In this case as well, the layer thickness of the treated material on the grain sieve is maintained well. Therefore, by changing the aperture ratio in the chaff sieve, temporary fluctuations in the material to be processed can be corrected in the grain sieve.

[Effect of idea]

As a result, in addition to changing the leakage area of the grain sheave according to the amount of leakage from the receiving net, it is possible to reduce the We have developed an excellent threshing machine that can further reduce the amount of broken straw, etc. that enters the first grain collection section, and improve all of the sorting performance, work efficiency, and collection efficiency. Now we can provide it.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figure 1 shows the schematic configuration of a threshing machine. The thresher includes a handling chamber 1 and a sorting chamber 2 below the handling chamber 1. In the handling chamber 1, there is provided a rotary handling cylinder 4 which also acts to thresh the grain culms supplied by the feed chain 3, and along the lower outer circumference of this handling cylinder 4, there is a A receiving net 5 is set up. In addition, in the sorting room 2, there is a first grain sieve 6 for shaking and sorting the leakage from the receiving net 5, and a grain sieve 6 for separating the leaking material from the receiving net 5, and a grain sieve 6 for transporting the receiving net 5 to the end of the handling room without leaking. Two-stage stroke racks 7, 7 that oscillately feed and sort the processed materials that fall from the opening 1a after
A swinging sorting device A is provided which is installed and fixed between a pair of left and right swinging frames 8, 8. At the bottom of the sorting chamber 2, there is a first material collecting section 9 that collects and carries out the first material leaking from the grain sieve 6, and a straw rack 7 that collects and carries out the first material leaking from the grain sieve 6, and a straw rack 7 that collects and transports the waste material that has fallen beyond the terminal end 6a of the grain sieve 6. A second object collecting section 10 is disposed at the front and rear for collecting fallen objects from the vehicle and returning them to the handling chamber 1. Further, in the sorting chamber 2 between the grain sieve 6 and the stroke rack 7 and both the collection sections 9 and 10, there are provided a winnower 11 for blowing sorting air, a dust suction fan 12 for sucking and discharging floating garbage, etc.

As shown in FIG. 1, the grain sheave 6 is attached to the swing feed end side of the grain pan 13 whose both ends are fixed to the left and right swing frames 8. A shielding plate 14 that can freely move in and out is provided. This shielding plate 14
Transmission mechanism 1 consisting of a combination of rack and pinion
6 and a link mechanism 17, the shielding plate 14 is connected to the motor 15 by driving the motor 15.
By moving left and right in the figure along the guide rail 18, the area for most material leakage by the grain sheave 6 can be changed.

Further, a chaff sheave 19 whose opening ratio can be changed is provided between the receiving net 5 and the grain pan 13. As shown in FIGS. 3 to 5, this chaf sheave 19 has a plurality of pairs of slats 20, each consisting of two slats 20a and 20b, arranged in parallel in the swinging feed direction, extending over the left and right swinging frames 8 and 8. It is something. In each slat pair 20, one slat 20a is fixed to the swing frame 8 in an inclined state, and the other slat 20b is mounted so as to be swingable back and forth using the upper end P of this fixed slat 20a as a fulcrum. Pins 21 extending from both ends of the swinging portion of the swinging slat 20b are connected to elongated holes 8a formed in the swinging frame 8.
It is pivotally connected to a pair of rods 22 outside the swing frame 8 through the shaft, and as shown in FIG.
By swinging the swinging slat 20b back and forth with the drive of the motor 15, the distance L between the lower end portions of both the slats 20a and 20b is changed, and the opening ratio of the chaf sheave 19 is adjusted. It is configured so that it can be changed.

On the other hand, a part of the grain pan 13 is separated from other parts and biased upward by a spring 25 attached to a support frame 24, and leakage from the receiving net 5 loaded on the grain pan 13 is removed. This part moves up and down depending on the weight. and,
A potentiometer 26 for detecting the amount of vertical movement of this portion is attached to the support frame 24, and a detection signal from the potentiometer 26 is input to a control device 27 for the motor 15.

When the swinging amount of the swinging portion of the grain pan 13 is large, that is, when the amount of leakage from the receiving net 5 is large and the layer thereof is thick, the shielding plate 14
is moved in the direction of retiring from the leakage path, and the motor 15 is driven so that the area for leakage by the grain sheave 6 is maximized and the opening ratio of the chaff sheave 19 is increased. . Therefore, much of the leakage from the receiving net 5 falls on the swinging start end side of the grain pan 13, and
The layer thickness is averaged by being oscillatedly fed over the grain pan 13 for a long time, and moreover, the grains that gather below the leakage layer due to the oscillating feeding operation on the grain sieve 6 are collected at the end of the grain sieve 6 The particles do not fall over the second object collecting section 10 over the grain sieve 6a, but sufficiently leak into the first object collecting section 9 through the wide opening of the grain sieve 6.

In addition, when the amount of rocking of the rocking portion of the grain pan 13 is small, that is, when the amount of leakage from the receiving net 5 is small and the layer becomes thin, the shielding plate 14
is moved in the direction of protruding into the leakage path, and the motor 15 is driven so that the area for leakage by the grain sheave 6 becomes the smallest and the opening ratio of the chaff sheave 9 becomes smaller. be. Therefore, much of the leakage from the receiving net 5 falls on the swinging end side of the grain pan 13, and
Diffusion caused by the oscillating feed on the grain pan 13 prevented the layer from becoming extremely thin, and moreover, the layer was prevented from becoming extremely thin due to the oscillating feed motion causing the cut straw to take an upright position and pass through the grain sieve 6. ,
This makes it possible to reduce the amount of cut straw that enters the first material collecting section 9.

[Another example]

In the previous embodiment, the shielding plate 14 is provided as a configuration for changing the area for material leakage by the grain sheave 6. It may be possible to change the position, and its specific configuration can be changed as appropriate.

Further, the configuration for changing the aperture ratio of the chaff sheave 19 can also be changed as appropriate.

In the previous embodiment, the leakage area of the grain sheave 6 and the opening ratio of the chaff sheave 19 are changed in conjunction with each other according to the detected amount of leakage. Alternatively, the structure for detecting the amount of leakage may be omitted and the portion 14, which is swung by the user, may be simply driven.
Various changes are possible, such as fixing 20b at an arbitrary position with bolts.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the oscillating sorting device for a threshing machine according to the present invention, FIG. 1 is an enlarged sectional view of the oscillating sorting device, FIG. 2 is a sectional view of the threshing machine, and FIG.
The figure is an enlarged sectional view of the chaff sheave portion, FIG. 4 is a sectional view taken along the line -- in FIG. 3, and FIG. 5 is a partially cutaway view taken along the line in FIG. 3. FIG. 6 is a sectional view corresponding to FIG. 1 showing a conventional example. 1... Handling room, 5... Receiving net, 6... Glensieve, 8... Swinging frame, 13... Glenpan, 19...
…chaf sieve.

Claims (1)

[Scope of utility model registration request] The first leakage grain sieve 6 is used to shake and sort leakage from the handling room 1 that has passed through the receiving net 5.
In the swinging sorting device for a threshing machine, the swing sorting device for a threshing machine is configured such that the grain pan 13 is positioned behind the grain pan 13 and attached to the swing frame 8, and the area for leakage of the first material by the grain sieve 6 can be changed. A chaff sheave 19 capable of changing the opening ratio is provided above, and a mechanism for changing the opening ratio of the chaff sheave 19 and a mechanism for changing the area for the most leakage of the grain sheave 6 are connected to the chaff sheave 19 that can change the opening ratio. When the leakage area of the grain sheave 19 is set to a large value, the opening ratio of the chaff sheave 19 becomes large, and when the area for leakage of the grain sheave 19 is set to a small value, the opening ratio of the chaf sheave 19 becomes small. A oscillating sorting device on a threshing machine.