JPH0142435Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a chain roller structure in a grain culm conveying chain.

In other words, in a grain conveying chain in which a chain roller is meshed with a sprocket having teeth on the outer periphery of both sides, conventionally, the chain roller has a pipe structure with the same diameter, so the meshing sprocket and idler The problem was that the chain plate came into contact with the chain plate, causing noise and wear.

The present invention solves these drawbacks, and provides a simple structure that allows the sprocket and idler to mesh well without coming into contact with the chain plate, and can be suitably implemented.

Next, the embodiment shown in the drawings will be described.

Reference numeral B designates a sprocket, and the outer periphery of both sides of the sprocket B, which is rotated by the rotating shaft 4, is provided with a large number of teeth 1a, 1 so that the interval between the inner widths is the length L2.
b, and is constructed in the same manner as the conventional structure.

A shows the entire grain culm conveying chain, which has the same structure as the conventional structure by sequentially mounting chain pins 3 between chain plates 5a and 5b on both sides, but each chain pin 3 has teeth 1a and 1b of sprocket B. The meshing chain rollers 2 are fitted, and a large-diameter roll having a length L1 slightly shorter than the length L2 between the inner widths of the teeth 1a and 1b in the sprocket B is installed in the middle part of each chain roller 2. The part 2a is press-fitted and installed so that the tooth parts 1a and 1b can mesh with both ends of the chain roller 2 without approaching both ends of the large diameter roll part 2a and coming into contact with the chain plates 5a and 5b on both sides. and configure.

The large diameter roll portion 2a may be formed integrally with the chain roller 2, or only the large diameter roll portion 2a may be made of an elastic body.

Therefore, as shown in FIG.
b meshes with the chain roller 2, so that both outer sides of the engaging portions 1a, 1b do not come into contact with the chain plates 5a, 5b.

As described above, the present invention provides a grain conveying chain in which the chain roller 2 is meshed with the sprocket B having teeth 1a and 1b on the outer periphery of both sides. In the middle part, there is a length L between both tooth parts 1a and 1b on both sides of the sprocket B.
Since the large-diameter roll portion 2a having a length L1 slightly shorter than 2 is formed, the tooth portions 1a and 1b of the sprocket B mesh with the chain roller 2 with the large-diameter roll portion 2a in between. As a result, the chain meshes smoothly without contacting the chain plate, and the grain culm conveying chain can be rotated smoothly without generating noise or wear and tear unlike conventional methods, and has the advantage of being suitable for implementation. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view of the main part, FIG. 2 is a partially sectional top view of a part of the grain culm conveying chain, and FIG. 3 is a side view thereof. . 1a, 1b...teeth, B...sprocket, 2
...Chain roller, A...Grain culm conveyance chain, 3
... Chain pin, L1, L2 ... Length, 2a ...
Large diameter roll.

Claims (1)

[Scope of utility model registration request] In a grain conveying chain configured such that a chain roller 2 is meshed with a sprocket B having teeth 1a and 1b on the outer periphery of both sides, the sprocket B is attached to the middle portion of the chain roller 2 fitted to the chain pin 3. A chain roller structure characterized in that a large-diameter roll portion 2a is formed and has a length L1 that is slightly shorter than the length L2 between both toothed portions 1a and 1b on both sides.