Rocking sieve

Abstract

The invention discloses a rocking sieve. The rocking sieve is technically characterized by comprising a positioning spring and an ejection bolt body, wherein a metal tension spring is arranged in the positioning spring in a sleeved manner; two ends of the metal tension spring are fixed on embedded bolts; the end part of the ejection bolt body is a semisphere; and the shape of a concave pad which is matched with the ejection bolt body is a concave sphere of which the diameter is identical to that of the semisphere. The rocking sieve has the beneficial effects that the tension linearity and fatigue resistance of the metal spring are higher than those of a rubber spring, so that the service life of the composite spring of the rocking sieve is prolonged through improvement; and besides, the ejection structure is reasonable, and stress is more scientific, so that the service life is long.

Description

technical field [0001] The invention relates to a swinging screen, in particular to a new type of swinging screen. Background technique [0002] The positioning spring of the swinging screen was originally a pure rubber part with embedded bolts. Because the swinging frequency of the swinging screen is high and the swinging range is large; the stretching frequency and stretching range of the positioning spring are large, which will cause fatigue and aging of the rubber parts, and it is easy to broken, the service life is short, which is not conducive to the production efficiency of the swinging screen; the structure of the top bolt of the current swinging screen is relatively complicated, and it generally needs to have a center hole on the bolt body, and then use a pin to drive into the center After the hole is completed, the fixing of the jacking bolt is completed. This connection method leads to a complex structure of the jacking bolt and high processing costs; and the bolt...

AI Technical Summary

Problems solved by technology

[0002] The positioning spring of the swinging screen was originally a pure rubber part with embedded bolts. Because the swinging frequency of the swinging screen is high and the swinging range is large; the stretching frequency and stretching range of the positioning spring are large, which will cause fatigue and aging of the rubber parts, and it is easy to broken, the service life is short, which is not conducive to the production efficiency of the swinging screen; the structure of the top bolt of the current swinging screen is relatively complicated, and it generally needs to have a center hole on the bolt body, and then use a pin to drive into the center After the hole is completed, the fixing of the jacking bolt is completed. This connection method leads to a complex structure of the jacking bolt and high processing costs; and the bolt body is affected by the upper and lower exciting forces, and the pin is easy to break, which affects the service life of the jacking bolt.

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