JPS6119140Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a structure in which at least the lower side of the grain frying case having a vertical screw is configured in a separable half-shape,
A bearing part of a grain lifting device in which a dust discharge port is formed near the two half-split case parts or one of the bearing parts, and a rotating disk for dust discharge and a dustproof disk are provided near the discharge port. Regarding dustproof structure.

In the dust-proof structure of the bearing part of this type of conventional grain lifting device, as shown in FIG. A dust discharge port 15' is formed, and a dust discharge rotary disk 16' is fixed to the screw shaft 13A' portion of the vertical screw 13' corresponding to the dust discharge port 15', and a dust discharge rotary disk 16' is fixed to the screw shaft 13A' portion of the vertical screw 13' corresponding to the dust discharge port 15'. A dust-proof disc 17 is fixed to the screw shaft 13A' portion located at the screw shaft 13A' between it and the inner peripheral surfaces of the half-split case parts 7A' and 7B' to prevent dust from entering the bearing part side. However, if this is the case,
If the dust-proof disk 17' is constructed so that its outer circumferential surface is very close to the inner circumferential surfaces of the half-split case parts 7A' and 7B', assembly errors between the dust-proof disk 17' and the screw shaft 13A' may occur. As a result, the outer circumferential edge of the dust-proof disc 17' comes into strong local sliding contact with the inner circumferential surfaces of the half-split case parts 7A' and 7B', and the screw shaft 13
In order to avoid this, the outer diameter of the dust-proof disc 17' is made slightly smaller than the inner diameter of the half-split case parts 7A' and 7B'. Plate 17' outer periphery and case part 7
If a clearance is formed between the inner circumferential surfaces of A' and 7B' so that they do not come into sliding contact due to assembly errors, a large amount of dust may enter the bearing part through the clearance. There was a problem that the bearing part wore out in a short period of time.

In view of the above-mentioned circumstances, an object of the present invention is to make it possible to reliably prevent dust from entering the bearing portion by simply improving the structure of the dust-proof disc.

That is, in the dust-proof structure of the bearing part of the grain lifting device according to the present invention, in the above-described structure, the rotary disk for dust discharge is fixed to the screw shaft portion of the vertical screw corresponding to the discharge port, and the dust-proof disk is fixed to the screw shaft portion of the vertical screw corresponding to the discharge port. It is characterized in that it slides into contact with the upper surface of the rotating disk from the direction of its rotational axis, and is held and fixed by the inner peripheral surfaces of both half-split case portions. According to this configuration, the rotary disk for dust discharge is fixed to the screw shaft portion at the center, making it easy to center the two, and therefore the outer periphery of the rotary disk and the inside of the two half-shaped case portions can be easily aligned. The clearance with the periphery is also easy to contact, and it is easy to face the dust outlet. Even if there is an assembly error between the two and the centering is slightly poor, the outer circumferential surface of the dust-proof disk will be hugged and fixed to both halves of the case, and the inner circumferential surface and screw shaft portion will be separated by a cut edge. The grain frying case can be fixed in sliding contact with or very close to the upper surface of the rotary disk, and dust from inside the grain frying case is guided radially from the upper surface of the rotary disk to the exhaust. Since it is completely discharged to the outside from the outlet, it has become possible to reliably prevent dust from entering the bearing, and to minimize wear and tear on the bearing due to the intrusion of dust. Furthermore, instead of arranging a large number of the dust-proof discs in parallel, it is sufficient to construct only one dust-proof disc as described above, making the structure simple and advantageous in terms of manufacturing.

Hereinafter, an embodiment of the present invention will be explained about a grain lifting device installed in a threshing machine. As shown in FIGS. The cylindrical case 3 is supported by a cylindrical case 3 fixedly connected to the threshing side wall 2 via a bearing 4 near the end on the downstream side in the direction.
A grain frying case 7 in a vertical orientation communicates with the cylindrical case 3 and a gear case 6 fixedly connected to the cylindrical case 3 via a chain case 5.
are fixedly connected to each other, and in the gear case 6, an intermediate transmission shaft 9 in a horizontal position that is interlocked with the screw shaft 1A of the horizontal screw 1 via a chain 8 is supported via bearings 10, 10. A vertical screw 13 interlocked with the intermediate transmission shaft 9 via a pair of bevel gears 12A and 12B is connected to a bearing 14 between a bearing member 11 provided at the upper end of the grain frying case 7 and the gear case 6.
The shaft is mounted via 14.

The lower side of the fried grain case 7 is configured in a separable half-shape, and the two half-split case parts 7A,
7B, a dust discharge port 15 is formed near the gear case 6 side of one half-shaped case portion 7A that supports the vertical screw 13, and a dust discharge port 15 is formed in the screw shaft 13A portion of the vertical screw 13 corresponding to the discharge port 15. The dust-discharging rotary disk 16 is fixed thereto, and an annular dust-proof disk 17 that can be brought into contact with the rotary disk 16 from the axis of rotation thereof is attached to each of the half-split case portions 7A and 7B. It is configured to be hugged and fixed on the inner peripheral surface.

In the figure, reference numeral 18 is a grain flipping blade fixed to the upper end of the screw shaft 13A of the vertical screw 13, and reference numeral 19 is a grain discharge port formed in the grain frying case 7 corresponding to the blade 18.

[Brief explanation of the drawing]

The drawings show an embodiment of the dustproof structure of the bearing part of the grain lifting device according to the present invention, and FIG. 1 is a longitudinal sectional view of the grain lifting device;
FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 3 is a vertical cross-sectional view of main parts showing the conventional structure.

Claims (1)

[Scope of utility model registration request] At least the lower side of the grain frying case 7 having the vertical screw 13 is configured in a separable half-shape, and the dust outlet 15 is formed near the bearing part of either of the two half-split case parts 7A, 7B. At the same time, a rotary disk 1 for discharging dust is installed near the discharge port 15.
6 and a dust-proof disc 17, the dust-proof structure of the bearing part of the grain lifting device is provided with the rotary disc 1 for discharging dust.
6 is a vertical screw 13 corresponding to the discharge port 15.
of the screw shaft 13A, and the dust-proof disc 17 is brought into sliding contact with the upper surface of the rotary disc 16 from the direction of its rotational axis, and both of the half-split case parts 7A and 7B are A dust-proof structure for the bearing part of the grain lifting equipment, which is fixed on the inner circumferential surface.