Wriggle-free compound pendulum consisting of metal ring and strip clamp slot

Abstract

A wriggle-free compound pendulum consisting of a metal ring and a strip clamp slot relates to the compound pendulum field and in particular relates to the manufacture of an oscillating bar of a wriggle-free compound pendulum used in an experiment for testing acceleration of gravity with the compound pendulum. Most of the oscillating bars of the compound pendulums and pendants are in line contact, thus twist easily occurs; and in a certain patent, blade contact is adopted, but the pendant and the oscillating bar are poor in durability. In order to overcome the defect that the common compound pendulum is easy to twist and blade contact causes damage easily, the oscillating bar of the compound pendulum is formed by connecting metal rings in the invention. Rings which have 10mm diameters and are made of stainless steel or high-hardness aluminum alloy are drawn close with the head and tail so as to form the oscillating bar of the compound pendulum; the two sides of the rings are clamped through clamp slots made of stainless steel or high-hardness aluminum alloy, and then the rings are fixed in the clamp slots through point welding; the pendent of the compound pendulum is a cylinder which has a 3mm diameter and is made of stainless steel or high-hardness aluminum alloy; the oscillating bar of the compound pendulum can be effectively avoided to twist through point welding; and point contact is adopted instead of blade contact, thus improving the durability of the oscillating bar and the pendent of the compound pendulum.

Description

technical field [0001] The invention relates to the field of compound pendulums, in particular to the manufacture of swing rods for non-twisting compound pendulums used in the experiment of measuring the acceleration of gravity with compound pendulums. Background technique [0002] Most of the pendant pendant is in line contact with the pendant. Due to the unevenness of the pendant, the pendant pendant is prone to twisting, and it takes a long time to adjust the level of the pendant. There are patents that use knife-edge contact. The knife-edge is point contact, which can Effectively avoid twisting, but the sharper the knife edge is, the closer it is to point contact, and the sharper the knife edge will damage the pendant, and the knife edge itself will gradually wear out, making the pendant and the swing bar less durable. Contents of the invention [0003] In order to overcome the deficiencies of the ordinary compound pendulum being easy to twist and the knife-edge contac...

AI Technical Summary

Problems solved by technology

[0002] Most of the pendant pendant is in line contact with the pendant. Due to the unevenness of the pendant, the pendant pendant is prone to twisting, and it takes a long time to adjust the level of the pendant. There are patents that use knife-edge contact. The knife-edge is point contact, which can Effectively avoid twisting, but the sharper the knife edge, the closer to the point contact, the sharper the knife edge will damage the pendant, and the knife edge itself will gradually wear out, making the pendant and swing rod less durable

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