JP3476673B2 - Karen of threshing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates mainly to a threshing machine mounted on a combine or a harvester. [0002] winnowing fan of the Related Art threshing apparatus, for example, JP-A-8-1
As disclosed in Japanese Patent Application Laid- Open No. 16777, a structure is generally used in which stays are radially mounted at two places in the axial direction of a karino shaft, and a wide wing blade is mounted on the stay. [0003] In recent years, as the processing capacity of the threshing apparatus has been increased, it has become necessary to increase the capacity of the sorting section, and there has been an increasing demand for increasing the blowing capacity from Karamino. It is said that the fan efficiency of Karino of the above structure is limited to about 40% for a single fan, and if it is installed in an actual machine, the presence of a driving pulley and a bearing bracket at the intake port,
Etc., the intake efficiency is low, and the fan efficiency is 3
The fact is that it drops to about 0%. Therefore, in order to increase the air blowing capacity, a rotation speed is increased to increase the wind speed and the wind pressure. However, a structure in which the air is sucked from the left and right intake ports and sent out from the exhaust port having the full width at the peripheral portion. When the rotation speed is increased, the air that has flowed in from the left and right intake ports is immediately sent out, causing a large deviation in the distribution of the wind speed and pressure in the horizontal width direction. It was something that would be. Another problem is that increasing the rotation speed increases drive noise and wind noise. SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a Karamin which can increase the blowing capacity and improve the distribution of the blowing by simply adding a simple improvement. The purpose is. [0007] The features, functions and effects of the invention according to claim 1 are as follows. [Characteristics] A feature of the invention according to claim 1 is that a wing blade that is wide in the direction of the rotation axis is provided on the Karamin shaft, and that the wing blade is provided at a middle portion in the width direction of the wing blade and is orthogonal to the rotation axis. A wind guide plate is provided so as to be integrally rotatable with the wing blade, and the inner edge of the wing blade and the
And fins are provided on the side surfaces of the air guide plate within the interval width formed between the fins. [Operation] According to the above configuration, at the place where the wind wing intersects with the wind guide plate, the surface of the wind wing blade in the rotation direction front side and the side surface of the wind guide plate rotate while holding air. As a result, centrifugal force is applied to the air, increasing the wind speed and wind pressure at the intermediate portion in the blade width direction, and further improving the air blowing function at the intermediate portion by the fins provided on the side surfaces of the air guide plate However, a large deviation in the distribution of the wind speed and the wind pressure in the horizontal width direction is less likely to occur. [Effect] Therefore, according to the first aspect of the present invention, the wind speed and the wind pressure can be increased by a simple structure change simply by adding a baffle plate, and the wind speed is quiet without increasing the rotation speed. It is now possible to obtain the desired wind selection ability while driving. Further, the distribution of the wind speed and the wind pressure in the lateral width direction does not have a large bias, so that it is possible to perform suitable blowing for the sorting. The air blowing function is further improved by the side fins of the air guide plate, and the above effect can be more remarkably exhibited. FIG. 1 shows an example of a threshing apparatus mounted on a combine. This threshing apparatus is provided with a handling chamber 3 having a rotating cylinder 2 that acts on grain culms conveyed by a feed chain 1, and below the handling chamber 3, a lower peripheral surface of the rotating cylinder 2. A sorting chamber 5 is formed for sorting and processing the processed material leaking from the receiving net 4 stretched along the line. A swing sorting body 7 is provided, and at the bottom of the sorting chamber 5, the first thing collecting part 8 that collects the first sorted material and carries it out via the first screw 8 a, and the second sorted material is collected. A second conveyer for conveying via a second screw 9a, and a reduction conveyor 10 for returning the conveyed second product to the conveyance start end of the swinging sorting body 7; ing. As shown in FIG. 2, the Karamin 6 has an intake port 12 formed in a side plate portion 11a of the Karamin case 11 composed of left and right side plates of the threshing device, and a bearing bracket 14 for supporting the Karamin shaft 13. Is attached to the Karamin case 11 in a state of crossing the intake port 12, and a plurality of (four in the embodiment) wind wings 15 in the circumferential direction are attached to the Karamin shaft 13.
An input pulley 18 for receiving power from an engine 17 and the rotation handle are provided at one end of the Karamin shaft 13 protruding outward from the Karamin case 11. An output pulley 19 is attached to the body 2, and two output pulleys 20 and 21 for the first screw 8 a, the second screw 9 a, and the reduction conveyor 10 are attached to the other end. The wing blades 15 are formed by resin molding, and are bolted to a pair of left and right stays 16 fixed at two positions in the axial direction of the karino shaft 13. A disk-shaped baffle plate 24 is fixed to the middle portion of the left and right stays 16 at right angles to the Karino shaft 13.
Each of the wind wings 15 is engaged and supported by a slit 25 formed in a peripheral portion of the fin 27.
Is protruding. The bearing bracket 14 is a sheet metal processed product, of which a bearing mounting portion 14A for mounting the bearing 22 and a mounting portion 14 for mounting on the Karamin case 11 are provided.
A vent hole 23 penetrating inward and outward is formed in a portion between the first and second portions. The Karino 6 according to the present invention is configured as described above. By rotating the Karamin shaft 13 in the direction indicated by the arrow in FIG. Air is supplied to the sorting chamber 5 from the exhaust port 26 formed over the entire width of the peripheral part of the Karamin case 11 at a desired wind speed and pressure. Here, since the ventilation holes 23 are formed in the bearing bracket 14 traversing the intake port 12, the intake resistance is reduced and efficient intake is performed. Also, at the place where the wind wing 15 and the air guide plate 24 intersect, the surface of the wind wing 15 on the front side in the rotation direction and the side surface of the air guide plate 24 rotate while holding air. As a result, centrifugal force is applied to the air to increase the wind speed and wind pressure. The fins 27 projecting from the side surfaces of the baffle plate 24 further apply centrifugal force to the air to further increase the wind speed and wind pressure. The present invention can be implemented in the following modes. As shown in FIGS. 6 and 7, when the wing blade 15 is inclined forward by several tens of degrees in the rotational direction, the efficiency of sucking outside air is increased and the wind pressure can be further increased.

[Brief description of the drawings] FIG. 1 is a longitudinal side view of a threshing apparatus. Fig. 2 Cross section plan of the entire Karamin FIG. 3 is an exploded perspective view showing a bearing part of Karino; Fig. 4 Side view of the cross section of Karino FIG. 5 is a perspective view of an air guide plate. FIG. 6 is a vertical side view of another embodiment of Karamin. FIG. 7 is a perspective view of a baffle plate used in another embodiment. [Explanation of symbols] 13 Karakomin 15 wing feather 24 Wind guide plate 27 Fins

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model No. 64-22234 (JP, U) Japanese Utility Model No. 4-14798 (JP, U) Japanese Utility Model No. 53-158676 (JP, U) Registered utility model 371871 ( JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01F 12/48

Claims (1)

(57) [Claims] [Claim 1] A wide wing blade is provided on a Karamin shaft in the direction of the rotation axis, and an intermediate portion in the width direction of the wing blade is
A wind guide plate orthogonal to the rotation axis is provided so as to be integrally rotatable with the wing blade, and is formed between the inner edge of the wing blade and the Karamin shaft.
Karin of a threshing device in which fins are provided on the side surfaces of the air guide plate within the interval width .