Wiggle-free compound pendulum consisting of metal circular rings and circular clamping grooves

Abstract

The invention discloses a wiggle-free compound pendulum consisting of metal circular rings and circular clamping grooves, and relates to the field of manufacture of compound pendulums, in particular to the manufacture of the wiggle-free compound pendulum. A pendulum bar and a pendant of the conventional compound pendulum are in line contact, so that wiggle is easily produced. According to certain patents, knife edge contact is adopted, so that the pendant and the pendulum bar are low in durability. In order to overcome the shortcomings of high wiggle rate and high damage rate of the knife edge contact of an ordinary compound pendulum, the pendulum bar of the compound pendulum is formed by connecting the metal circular rings. The technical scheme is that: the metal circular rings with external diameters of 10mm and internal diameters of 6mm are manufactured by using a plurality of stainless steel or high-hardness aluminum alloy metal wires with diameters of 2mm, and are clamped by clamping bodies; through holes with diameters of 2mm are formed at an equal interval on the two sides of each clamping body; a thread is arranged in each through hole; the clamping bodies are provided with the circular clamping grooves through which the circular rings are positioned; and screws are arranged in the through holes, so that the circular rings can be fastened. The wiggle of the pendulum bar of the compound pendulum can be effectively avoided; and the knife edge contact is replaced by point contact, so that the durability of the pendulum bar and the pendant of the compound pendulum is improved.

Description

technical field [0001] The invention relates to the field of compound pendulum manufacture, in particular to the manufacture of a twist-free compound pendulum used in the experiment of measuring the acceleration of gravity with the compound pendulum. Background technique [0002] The currently used compound pendulum swing rod is in line contact with the pendant. Due to the unevenness of the pendant, the compound pendulum pendulum 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, and the knife-edge is point contact. Twisting can be effectively avoided, 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 common compound pendulum being easy to t...

AI Technical Summary

Problems solved by technology

[0002] The currently used compound pendulum swing rod is in line contact with the pendant. Due to the unevenness of the pendant, the compound pendulum pendulum 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, and the knife-edge is point contact. It can effectively avoid twisting, but the sharper the knife edge is, the closer it is 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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