JPS6032009Y2 - soundproof chute - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a chute for cropped material or the like in a shear line for rolled materials such as steel bars, and more specifically to a chute having a soundproofing function.

In the shearing line that cuts rolled material into predetermined lengths, the sheared end pieces are carried out of the line from the discharge chute as crops. It collides with the surrounding surface and generates extremely loud noise and vibration.

Since these noises and vibrations significantly worsen the working environment, various countermeasures have been taken.

For example, there is a method of attaching a buffer made of elastic material such as rubber to the inner circumferential surface of the chute, but this method has extremely poor durability, requires frequent replacement work, and has the disadvantage that the line must be stopped each time. There is.

As a result of various experiments, we found that the soundproofing effect is large and
It has been found that herringbone woven wire mesh is suitable as a shock absorber with excellent durability.

This herringbone woven wire mesh 1 is, as shown in FIG.
Using special steel wire with high hardness and diameter size that takes wear resistance into account, the wires are arranged alternately to create a Herringbone wire. As shown schematically in Figure 2, each spiral wire R and L has a loop shape, so it has a large elasticity against the force acting in the thickness direction of the wire mesh. Possess gender.

Therefore, even if a crop material or the like falls and collides with this herringbone woven wire mesh, it is elastically received and vibrations are absorbed, and since it is a mesh, almost no metal noise is generated due to the collision.

However, when this herringbone woven wire mesh 1 is used as a buffer,
As shown in the cross-sectional view of the chute in Figure 3, when the wire mesh is directly attached to the inner peripheral surface of the crop chute by welding M, the wire mesh is thin and has a small heat capacity. Because special alloy steel wire is used, it has poor weldability with the general steel material of the chute, and the weld W frequently breaks due to the impact caused by the discharge of the crop material.
The line must be stopped and repaired each time, and the existing defects cannot be resolved.

The present invention was developed in view of the above-mentioned drawbacks, and the purpose is to provide a soundproof chute equipped with a highly durable shock absorber with high mounting strength. A wire mesh with layer-wound spiral wires and left-wound spiral wires arranged alternately in a herringbone shape to maintain elasticity in the thickness direction is used to provide the same heat capacity as the wire mesh to the bottom wall and both sides of the crop chute. The peripheral underlayment metal piece is fixed by welding and the metal piece is attached via this metal piece.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 4 shows a cross-sectional view of the soundproof chute according to the embodiment of the present invention, in which the wire mesh 1 of the knitted body shown in FIGS. The back surface 2 and side surface 3 of the metal piece 10 are fixed by fillet welding, but this welding is extremely effective due to the selection of a material for the metal piece 10 that has good weldability with respect to the wire mesh material and the heat capacity relationship described above. It is robust.

The metal piece 10 welded to the wire mesh 1 is attached to the inner peripheral surfaces of the bottom wall and both side walls of the chute 11 via the metal piece 10 by fillet welding in this example.

Unlike direct attachment of the wire mesh, this welding is also easy to carry out and produces good results, so that the wire mesh of the buffer bodies 4, 4 can be attached with high strength.

In addition, in consideration of replacement work, etc., the metal piece can be attached to the chute by drilling a mounting hole in the metal piece 10 and using bolts or bolts.
It is preferable to attach it with a nut or the like.

If this attachment is structured, the range of chute materials to choose from will be further expanded.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the wire mesh weaving state, Fig. 2 is a schematic diagram of its cross section, Fig. 3 is a sectional view of a chute showing a conventional wire mesh installed state, and Fig. 4 is a soundproof chute according to an embodiment of the present invention. FIG. 1... Wire mesh, 2... Back side of wire mesh, 3...
...Wire mesh side, 4...Buffer, 10...
...Metal piece, 11...Chute, S...
...Okibe wire, R...Layered spiral wire, L...
...Left-handed spiral wire, W...Welding.

Claims (1)

[Scope of utility model registration request] A wire mesh made by alternately arranging a layer-wound spiral wire group and a left-wound spiral wire group in the Okabe wire group and knitting it into a herringbone shape to maintain elasticity in the thickness direction is used on the inner periphery of the bottom wall and both side walls of the crop chute. A soundproof chute characterized in that a peripheral underlay metal piece having the same heat capacity as the wire mesh is welded and fixed to the surface, and the chute is attached via the metal piece.