JP3497337B2 - Chaff sieve structure of grain sorter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chaff sheave structure of a grain sorting device provided in, for example, a combine threshing device, in which a large number of chaff plates are arranged side by side in a rocking sorting frame at front and rear intervals. The present invention relates to a chaff sheave structure of a grain selection device that is installed in the state of being laid.

[0002]

2. Description of the Related Art Conventionally, in the chaff sheave structure of this type of grain selecting apparatus, each chaff plate is formed into a series of link members long in the front and rear direction, as disclosed in, for example, Japanese Unexamined Patent Publication No. 8-275659. It is known that the shafts are pivotally supported and the tilt of each chaff plate is adjusted by the forward and backward movement of the link member, thereby adjusting the longitudinal distance between the chaff plates, and by extension, the degree of leakage of the processed material. Has been. Therefore, in the conventional structure described above, the overall leakage processing capability of the chaff sheave having a predetermined installation width in the front and rear is uniformly changed and adjusted.

[0003]

By the way, the layer thickness of the processed material transferred on the chaff sheave is not necessarily uniform, and the processed material is relatively concentrated and thick, or
The processed product is easily transported in a state where the layer thickness is relatively thin. Therefore, in the conventional structure described above, since the entire leakage processing capacity of the chaff sheave is uniformly changed and adjusted, when the chaff sheave is transported on the chaff sheave in a partially biased state, a part of the chaff sheave is transferred. Even if the chaff sheave leakage treatment is performed well at the treated material transport site, the chaff sheave leakage treatment may not correspond to the amount of treated material at other portions, resulting in insufficient leakage treatment and grain There is a risk of being discharged to the outside of the machine while being mixed with straw and the like, and there is also a risk of straw and the like being mixed in the carefully selected product.

The present invention has been made in view of the above circumstances, and a chaff sheave structure of a grain selection device which enables good leakage selection even if there is a bias in the processed material transferred on the chaf sheave. For the purpose of providing.

[0005]

[Means for Solving the Problems]

(Structure) The chaff sheave structure of the grain selection device according to claim 1 of the present invention has an arm member for mounting to a swing selection frame.
A large number of chaff plates are laterally installed in a state of being juxtaposed in the front-rear direction with a space therebetween, and each of the chaff plates is attached to the arm.
Each member is independently elastically supported so that it can be opened / closed and swung about the lateral swing axis , and the opening of the chaff plate increases as the load of the object increases. The arm member is configured to open and close according to
The posture can be changed around the horizontal axis with respect to the swing selection frame.
Spring supported by elastically supporting the chaff plate openably swing
Is provided over the arm member and the chaff plate,
The mounting posture of the arm member to the swing selection frame
Is provided with an operating means for changing around the horizontal axis,
By operation of the operating means without changing the urging force of the spring
It is characterized in that the tilt posture, which serves as a reference for opening and closing swing of each chaff plate, can be changed and adjusted.

(Operation) According to the constitution of claim 1 of the present invention, the operation described in the following [i] and [ii] is achieved.
It [I] A large number of chaff plates are laterally laid on the swing selection frame side by side in the front-rear direction at a distance from each other, and each chaff plate is independently elastically supported so as to be swingable independently, As the load on the upper processing object increases, the opening degree increases so that it can be opened and closed according to changes in the processing object load.Therefore, there is a quantitative bias in the processing objects transferred on the chaff sheave. However, depending on the load of the processed material on the chaff plate, the chaff plate itself can individually change the front-rear interval so that it can be freely opened and closed, and good grain leakage is achieved. As described above, the swinging posture is adjusted and adjusted by the individual chaff plate.

[Ii] Since the posture that serves as the reference of the inclination of each chaff plate is configured to be changeable and adjustable in the inclination direction, for example, depending on the situation such as wetting of paddy or the ups and downs of grain culms in the field. According to various conditions such as cutting and threshing and then feeding to the sorting device, the whole chaff sieve should be pre-appropriately leaked so as to correspond to the supply amount of the processed material per unit time. In a state in which the chaff plates can be operated, the chaff plates are individually adjusted with respect to the proper posture.

(Effect) Therefore, according to the configuration of claim 1 of the present invention, there are the effects described in [I] and [II] below . [I] Since the degree of opening and closing of the chaff plate can be individually changed and adjusted so that even if there is a partial deviation in the amount of the processed material transferred on the chaff sheave, the leakage can be favorably processed in each of the uneven portions. As a whole, the leakage selection process is in an optimum state, and it is possible to suppress the mixing of straw or the like into the carefully selected product and the mixing of grain into the dust or straw discharged to the outside of the machine.

[II] The chaff plate can be changed in posture from a certain standard state in accordance with the amount of the object to be treated on the chaff plate to properly perform the leakage treatment, and the overall leakage can be preliminarily performed. By setting the reference attitude according to the amount of processed material, etc., it is possible to prevent the reference attitude of each chaff plate from being adjusted far away from the attitude that can accommodate the supply amount of processed material per unit time. In addition, it is possible to perform a better sorting process.

(Structure) The chaff sheave structure of the grain sorting apparatus according to claim 2 of the present invention is the chaff sheave structure of the grain sorting apparatus of the invention according to claim 1 in a state of being juxtaposed in front of and behind a swing sorting frame. It is characterized in that the degree of posture change of each chaff plate with respect to the load of the object to be treated is made different in the front half and the rear half of a large number of horizontally arranged chaff plates.

(Operation) According to the configuration of claim 2 of the present invention, the operations [i] and [ii] described above are obtained, and the operation described in [iii] below is exhibited. [Iii] In the first half of the chaff sheave, the amount of the processed material has not advanced even though the leakage amount is relatively large, and in the latter half of the chaf sieve, the leakage amount has also advanced and the processed material amount is small. As the processed material is transferred backwards with a small layer thickness, it is possible to handle a large amount of processed material by changing the degree of posture change of the chaff sheave of the chaff sheave in the first half and the latter half. By adjusting changes with a large proportion of posture change in response to a situation in which the amount of processed material is small, it is possible to adjust the chaff sheaves that are prone to undesirably mixing straw, etc. Be able to adjust properly in the second half.

[0012] (Effect) Therefore, according to the configuration according to claim 2 of the present invention, the together the effects of the above [I] is obtained, further distinguishing processing Ri yo reaches the performed satisfactorily.

[0013]

[0014]

[0015]

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a threshing device mounted on the combine. The threshing device includes a threshing part A for threshing while carrying the cut culm delivered from the unpreceding cutting device by the feed chain 1, and a sorting part B for sorting the threshed products. And a collecting unit C that collects the finely sorted product and returns the roughly sorted product to the sorting unit B.

The sorting section B receives a specific gravity sorting grain pan 4 which receives the treated material which has been treated by the handling cylinder 2 of the threshing portion A and has leaked from the receiving net 3, and transfers it to the rear, and the treated material from the grain pan 4. While transporting further to the rear, the chaff sheave 5 mainly leaks the grains and transports the straw etc. to the rear, the grain sieve 6 that carefully selects the leaked substances from the chaff sheave 5, etc., and the twigs and grains from the straw etc. A straw rack 7 for sifting and sorting grains is installed on the left and right sides of a sheave case 8 as a swing sorting frame, and a Karako fan 9 for sending the sorting air to the Glensieve 6, the chaff sheave 5, etc. is provided.

The chaff sheave 5 will be described in detail. As shown in FIGS. 2 to 5, a large number of synthetic resin chaff plates 16 made of horizontally long plate materials are provided side by side in the front-rear direction between the left and right side wall portions 8A, 8A of the sheave case 8. .

Each of the chaff plates 16 is individually wound by a coil spring 1.
It is elastically urged at 8 so as to have a constant inclined posture. The elastic urging force of the coil spring 18 for elastically urging each chaff plate 16 in the front half of the chaff sheave 5 (upper side in the processing object transfer direction) is set to be higher, and the latter half of the chaff sheave 5 (processing). The elastic biasing force of the coil spring 18 for elastically biasing each chaff plate 16 on the lower side in the object transfer direction) is set to be lower than that of the coil spring 18 in the front half portion. As a result, since the amount of the processed material supplied from the front onto the chaff sheave 5 is large, the chaff sheave 5
Of the load of the processed object and the elastic biasing force of the winding spring 18 in the first half of the above and the balance of the load of the processed object and the elastic biasing force of the winding spring 18 in the latter half of the I am trying to become.

As shown in FIGS. 2 to 5, long plate members 13 are provided on the left and right lateral side walls 8A, 8A of the sheave case 8, respectively, and are provided on the front and rear sides.
In addition, the arm member 14 is attached to the horizontal axis X1 at predetermined intervals in the front and rear.
In addition to being pivotally supported around, a erection plate member 15 made of a horizontally long plate member is erected between the pair of left and right arm members 14, 14. Then, at a place slightly lower than the place where the erection plate member 15 is continuously provided in the arm member 14,
A chaff plate 16 made of a synthetic resin material is provided with a lateral swing axis X.
It is pivotally supported around 2 . That is, the support shaft 17, which projects laterally outward from the lateral edge of the chaff plate 16, is pivotally supported by the arm member 14. Further, the end portions of the winding springs 18 that are wound around the outer circumferences of the left and right support shafts 17 are locked to the arm member 14 and the chaff plate 16. By the stopper S protruding from the arm member 14 and the winding spring 18, the chaff plate 16 is held in an inclined posture in which the chaff plate 16 is lowered frontward with respect to the arm member 14, and the chaff plate 16 is moved around the swing axis X2 in FIG. Elastically biased clockwise. Further, each arm member 14 ... Is pivotally supported at its lower end by a link plate 19 formed of a long plate member that is long in the front-rear direction so as to be swingable around a horizontal axis X3. Left and right link plates 19,1
The electric actuator 20 is configured so that it can be displaced in the front-rear direction by an electric actuator 20 via an operating mechanism 22 including a rod 21 and the electric actuator 20 can move the chaff sheave 5 as shown in FIG. A control device 23 based on a detection signal from a processed material amount detection sensor 24 installed at a lower surface portion of the net 3 for detecting the layer thickness of the processed material on the upper part and further detecting the amount of the processed material on the chaff sheave 5.
It is driven by a drive signal from.
That is, the control device 23, when the amount of processed material is large,
The link plates 19 and 19 are pulled rearward so that the reference value of the distance between the chaff plates 16 and 16 is set to be wider so that the processed material easily leaks from the chaff sheave 5. On the contrary, when the amount of the processed material is small, the link plates 19 and 19 are positioned toward the front so that the chaff sheave 5 does not easily leak, and the reference value of the interval between the chaff plates 16 and 16 is set to be narrow. Then, each chaff plate 16 has its chaff plate 1 separately processed based on the inclination posture corresponding to the set reference value.
The posture is changed and adjusted according to the load applied to 6.
As a means for detecting the amount of processed material, a means for detecting the amount of harvested grain culm by, for example, detecting the width of the grain culm held in the feed chain may be used.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a combine threshing device.

FIG. 2 is an explanatory diagram showing chaff sheaves and the like.

FIG. 3 is a side view showing the main part of the chaff sheave.

FIG. 4 is a vertical sectional front view showing a main part of the chaff sheave.

FIG. 5 is a cross-sectional plan view showing the pivot point of the chaff sheave.

[Explanation of symbols]

8 swing selection frame 10 chaff plate 14 arm member 18 spring X1 horizontal axis X2 swing axis

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01F 12 / 32,12 / 34

Claims (2)

(57) [Claims] 1. An arm member for mounting to a swing selection frame
And a plurality of chaff plates are installed side by side in a state of being juxtaposed in the front-rear direction with a space therebetween, and the chaff plates can be independently opened / closed and pivoted around the lateral pivot axis independently of the arm member. Elastically supported on,
In addition, the opening of the chaff plate increases as the load on the chaff plate increases, so that the arm member can be opened and closed according to the fluctuation of the load on the chaff plate. Figure around
The chaff plate is pivotally supported so that the force can be changed.
A spring for supporting the elasticity between the arm member and the chaff plate.
Arm part for the swing selection frame
Operation means to change the mounting posture of the material around the horizontal axis
A chaff sheave structure of a grain selecting device, wherein the chaff sheave structure is provided so that a tilting posture that serves as a reference in opening and closing swing of each chaff plate can be changed and adjusted without changing the biasing force of the spring by operating the operating means . 2. The degree of posture change of each chaff plate with respect to the load of a processed object is made different between the front half and the rear half of a large number of chaff plates horizontally mounted side by side on a swing selection frame in a front-rear manner. The chaff sheave structure of the grain sorter according to claim 1.