JP2820586B2 - Dust valve structure of threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust valve of a threshing apparatus mounted on a combine or the like.

[0002]

2. Description of the Related Art Conventionally, a threshing apparatus mounted on a combine or the like has been disclosed in, for example, Japanese Patent Application Laid-Open No. 5-16, for example, in order to be able to transfer processed materials such as straw chips in a handling room to the rear. As shown in the figure, a plurality of dust plates that transport threshing material backward on the inner wall of the handling room in cooperation with the handling cylinder can be freely opened and closed in the process transfer direction, and the tilting posture can be changed. 2. Description of the Related Art There is known a structure in which a dust valve mechanism is provided side by side and all dust plates are swung in the same posture.

[0003]

However, in the above-mentioned conventional structure, when the threshing amount is large,
If the dust plate has a constant initial tilting posture, the amount of threshing processed material in the first half of the handling cylinder will increase, and the feeding of the processed material will be worse, resulting in increased amount of cutting straw due to long-term stagnation. Even if the dust plate of the dust valve is automatically swung so that the feeding plate with high feeding performance can be detected to detect the amount of processed material and eliminate the feeding failure state, there is a problem. Although the feeding failure in the first half of the drum can be eliminated, the dust feeding plate is also opened in the second half of the drum and the feeding performance is high, so the loosening action in the latter half of the drum is handled. There is a problem to be solved in that the treated material is discharged from the handling room without sufficient treatment, and easily-produced paddy and untreated untreated material are likely to be generated. The present invention has been made in view of the above-described circumstances, and is configured to handle a feed performance for a workpiece in a first half portion and a second half portion of the handling chamber in a transport direction of the workpiece so that the processing is performed under conditions that are close to the best. It is an object of the present invention to provide a dust valve structure of a threshing device that can be set to a predetermined value.

[0004]

In order to achieve the above object, a dust feeding valve structure of a threshing apparatus according to the present invention is arranged such that a handling cylinder is rotatably mounted on an inner wall surface of a handling chamber provided around a longitudinal axis. ,
A plurality of dust plates for transferring the threshing processed material rearward in cooperation with the handling cylinder are arranged side by side so as to be openable and closable with respect to the processed material transfer direction so as to be capable of changing the inclination posture, thereby forming a dust feeding valve mechanism. At the same time, the dust valve mechanism is divided into a group of dust plates having a good hand in the direction of transfer of the workpiece and a group of dust plates of a piece having a lower hand in the direction of transfer of the workpiece. The minimum inclination angle of the lower-side dust plate group is set to be smaller than the most closed minimum inclination angle, and the maximum of the upper-side dust plate group and the lower-side dust plate group is set to the maximum. The configuration is characterized in that the inclination angles are the same. The operation and effect of this characteristic configuration are as follows.

[0005]

That is, in the dust valve mechanism, the minimum inclination angle of the lower dust plate group is set smaller than the most closed minimum inclination angle of the upper dust plate group in the processing object transfer direction. Therefore, when the threshing amount is large, the processed material is relatively easily transported in the first half of the handling room, so that the processed material does not stay for a long time. In the part, the feeding performance is set to be lower than that in the first half part, so that the handling operation can be given for a relatively long time while the amount of the processed material is maintained in a state suitable for handling. In addition, since the maximum inclination angle between the group of fine dusters and the group of fine dusters are the same, when the threshing amount is extremely large or when the driving load In the event that the machine becomes overloaded, etc., in order to eliminate the fatal problem at once, open the dust plate to the maximum to discharge the processed material from the handling room so that the processed material does not stay. Can promote.

[0006]

Therefore, the inclination of the dust-sending plate of the dust-sending valve mechanism can be easily modified by making the inclination angle of the most closed inclination different between the one with a good work transfer and the one with a poor work transfer. Good threshing can be achieved regardless of the amount of threshing.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a threshing apparatus for an all-culm-input combine. In this threshing apparatus, a handle drum 2 is installed in a handling chamber 1 for introducing a cut grain culm, which has been cut and conveyed by a pre-cutting processing unit (not shown), from the front so as to be rotated around a longitudinal axis P. Along with the support, a concave 3 is stretched along the outer periphery of the lower part of the handling cylinder 2 and the leaked material from the concave 3 is sorted into the first and second objects under the concave 3. A sorting device 4 for processing is arranged and configured.

As shown in FIGS. 1 and 2, on the outer peripheral surface of the handling cylinder 2, a large number of handling teeth 5 ‥ are spirally arranged, and threshing is performed in cooperation with the handling teeth 5 ‥. A dust sending valve mechanism 6 for transferring the processed material backward is disposed on the ceiling surface of the handling room 1. The dust feeding valve mechanism 6 is configured by arranging a large number of dust feeding plates 7 along the rotation direction of the handling drum 2 in front and rear at a predetermined interval. Each of the dust plates 7 # is swingably supported around a vertical axis X at an intermediate position in the longitudinal direction, and a front end of the dust plates 7 # has a front end. Dust plates 7A, 7A which are pivotally supported by the first connecting bar 8 and which are rearward from the fine dust plates 7A, 7A (hereinafter referred to as "lower dust plates"). 7B} are pivotally supported by the second connecting bar 9 with each other. The first connecting bar 8 has a first arm 10.
One end of the second arm 11 is pivotally connected to the second connecting bar. Here, the length k1 of the first arm 10 is set to be longer than the length k2 of the second arm 11. The other ends of the first arm 10 and the second arm 11 are pivotally attached to the ceiling of the handling room 1 so as to be swingable about axes Q1, Q2 parallel to the vertical axis X. The first arm 10 and the second arm 11 are screwed to a screw shaft 13 that is rotated and driven by an electric motor 12 whose position is fixed. As shown in FIG. 3, each of the fine dust plates 7A, 7A
Opening / closing angle, that is, the minimum angle θ1 of the angle formed by the imaginary line orthogonal to the longitudinal axis P in the plan view is larger than the minimum angle θ2 of the angle formed by the imaginary line of the lower gawa dust plate 7B #. And the first arm 10 and the second arm 10
Depending on the length and connection structure of the arm 11, the electric motor 12
Are set so that the maximum angle [theta] 3 formed by the imaginary line is the same between the superior dust-feeding plates 7A, 7A and the lower dust-feeding plate 7B #. The electric motor 12
Is controlled by the control means 15 based on the detection result of the threshing load detection means 14 so that the larger the load, the more the opening of the dust feeding plate 7 is operated.

Next, another embodiment will be described. The description of the same structure as the above embodiment is omitted, and the same structure is denoted by the same reference numeral as the above embodiment. FIG.
As shown in the figure, among the many dust plates 7 # arranged in parallel before and after constituting the dust valve mechanism 6, two good dust plates 7A, 7A having front ends are moved in the front-rear direction. Along with the long holes 17, 17 of the connecting bar 16 along the lower side, the lower bar dust transmitting plate 7B #, which is arranged rearwardly of the upper bar dust transmitting plates 7A, 7A, is attached to the connecting bar 16. Each is pivoted. The free end of a swing operation arm 19 that is swingably operated around the vertical axis Q by the electric motor 18 is pivotally connected to the connection bar 16 so that the connection bar 16 can be pushed and pulled back and forth. doing. And the good dust plate 7
Each of the rods A and 7A is elastically pulled forward by a spring 21 with the rod 20 pivotally attached thereto, whereby the fine-grain dust sending plates 7A and 7A are elastically biased forward. . In addition, an imaginary line perpendicular to the longitudinal axis P, which forms the rotation axis of the handling cylinder 2 in a plan view, and the fine dust plate 7
A stopper 2 for regulating the contact of the fine dust feeding plates 7A, 7A in order to set the maximum angle θ3 between the plates A, 7A and the plate surface.
2, 22 are provided. Furthermore, in the dust valve mechanism 6, the minimum angle θ1 formed between the imaginary line in plan view and the surface of the fine dust plate 7A, 7A due to the slot accommodation 17, 17, etc.
Is set to be larger than the minimum angle θ2 formed by the imaginary line in plan view and the plate surface of the lower-side dust sending plate 7B #, and the plate surface of the lower-side dust sending plate 7B # and the The maximum angle formed by the imaginary line is set so as to be the same as the maximum angle θ3 formed by the plate surfaces of the fine-grain dust sending plates 7A and 7A and the imaginary line. With this configuration, as shown in FIG. 5, unlike the previous embodiment, the electric motor 18 is driven to change the position of the dust sending plate 7 ‥ from the closed position at the minimum angle to the open position at the maximum angle. When moving, the good duster plates 7A, 7A are first held at the maximum angle θ3 and held in that posture, and the lower duster plate 7B ‥ is then swung until the maximum angle θ3 is reached. It is done. It should be noted that the good dust feeding plate 7A or the poor dust feeding plate 7B may be constituted by only one sheet.

[0010] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view showing a threshing apparatus.

FIG. 2 is a plan view showing a dust valve mechanism in a most closed state and a plan view showing a dust valve mechanism in a most opened state in the embodiment;

FIG. 3 is a graph showing a relationship between a feed amount by an electric motor and an opening / closing angle of a dust sending plate in the dust sending valve mechanism of the embodiment.

FIG. 4 is a plan view (a) showing a dust valve mechanism in a most closed state and a plan view (b) showing a dust valve mechanism in a most opened state in another embodiment.

FIG. 5 is a graph showing a relationship between a feed amount by an electric motor and an opening / closing angle of a dust plate in a dust valve mechanism of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handling room 2 Handling cylinder 6 Dust valve mechanism 7 Dust plate 7A Dust plate with a better hand in the direction of transfer of processed material 7B Dust plate with a lower hand in the direction of transfer of work P P

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-258512 (JP, A) JP-A-2-29233 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01F 7/00-12/60

Claims (1)

(57) [Claims] 1. A threshing product is cooperated with the handling cylinder (2) on an inner wall surface of a handling chamber (1) in which a handling cylinder (2) is rotatably mounted around a longitudinal axis (P). A plurality of dust feeding plates (7) to be transported rearward are arranged side by side so as to be openable and closable with respect to the processing object transport direction so as to be capable of changing their inclination posture, and constitute a dust feeding valve mechanism (6). The valve mechanism (6) is divided into a group of duster plates (7A) with a better hand in the direction of transfer of the processing object and a group of duster plates (7B) with a lower hand in the direction of transfer of the work piece. The minimum inclination angle of the lower-side dust-sending plate (7B) group is set to be smaller than the most closed minimum inclination angle of the dust-plate (7A) group. The dust valve structure of the threshing apparatus, wherein the maximum inclination angle with the dust plate (7B) group of the lower arm is the same.