JPH0232061Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention provides a bobbin for a ground chain that makes the engagement relationship of the bobbin body with the ground chain stable and tight, and prevents damage to the internal holes of the bobbin body or the bobbin body. It is related to.

<Prior art> A ground chain bobbin is a bobbin that is arranged along the lower edge of the net opening of a trawl net and is used to prevent wear and damage caused by contact with the seabed at the lower edge of the net opening. It is.

However, conventionally used ground chain bobbins come in various shapes, such as spherical and corrugated ones, but what they all have in common is that there is a ground inside the bobbin body. A through hole for passing the chain through was bored, and the ground chain was inserted into this through hole.

<Problems to be solved by the invention> However, when using a bobbin with a ground chain inserted into the bobbin body in this way, the bobbin body rotates during use, resulting in damage to the inner wall of the through hole inside the bobbin body. This caused the bobbin to be scraped off, and if this became extreme, it could even cause the bobbin itself to break.

<Means for solving the problem> Therefore, this invention forms unevenness corresponding to the shape of the ground chain inside the bobbin body to achieve close engagement between the bobbin body and the ground chain. This prevents the bobbin body from rotating, thereby preventing internal damage to the bobbin body.

<Example> Next, an example of the bobbin for a ground chain according to the present invention will be described based on the drawings. Reference numeral 1 indicates a ground chain, and 2 indicates a bobbin body. This bobbin body 2 is formed into one piece by joining a pair of two pieces facing each other, and each piece 3
An unevenness 4 corresponding to the shape of the ground chain 1 is formed in a portion that becomes internal when the two are joined together. Numeral 5 is a bolt hole for joining and connecting each piece 3. In addition, the shape of the bobbin body 2 is shown to be cylindrical in the drawings showing this embodiment, but it is not limited to this shape, and the material may be conventional materials such as rubber or metal. The same is true.

<Function> Therefore, each piece 3 of the bobbin body 2 is
The ground chain 1 is engaged with the unevenness 4, and each piece 3 is integrated using the bolt hole 5. Then, this bobbin body 2 is attached to the entire length of the ground chain 1 or at a necessary location.

<Effects of the invention> As described above, according to the bobbin for a ground chain according to this invention, since unevenness is formed inside to mesh with the shape of the ground chain, the positional relationship between the bobbin body and the ground chain is constant, Therefore, it is possible to prevent internal damage to the bobbin body during use.

[Brief explanation of the drawing]

The drawings show one embodiment of a bobbin for a ground chain according to this invention, and FIG. 1A is a front view of one piece of the bobbin body, FIG. 1B is a rear view, FIG. Figure 2 is a front view showing the engaged state of the gland chain and the bobbin body, Figure 3 is the bobbin body attached to the gland chain. FIG. 1... Grand chain, 2... Bobbin body,
3...Each piece, 4...Irregularities, 5...Bolt holes.

Claims (1)

[Scope of utility model registration request] A bobbin for a ground chain, characterized in that an unevenness corresponding to the shape of the ground chain is formed inside the bobbin body.