Inclined spring and inclined spring ultralow frequency vibration isolator

Abstract

The invention relates to an inclined spring and an inclined spring ultralow frequency vibration isolator. The inclined spring is characterized in that: the caster angle of the inclined spring is more than or equal to zero at least in an installation stress state, and the caster angle of the inclined spring is not definitely more than or equal to zero in a free state; when the inclined spring is an annular inclined spring, a joint 4 at one end of the inclined spring is in mechanical nesting connection with a joint 6 at the other end of the inclined spring on the basis of a nesting piece 8, so that the problems of fatigue strength and the like caused by applying the twisting moment and the compression stress of the joints to the conventional welded type annular inclined spring 10, particularly a heavy-load annular inclined spring applied in the fields of vibration reduction, vibration isolation, buffering and the like are solved; and the inclined spring ultralow frequency vibration isolator 20 consists of an extrusion body I 22, an annular inclined spring 2 or a non-annular inclined spring 2 and an extrusion body II 24.

Description

technical field [0001] An oblique spring of the present invention relates to its ultra-low frequency vibration isolator, especially suitable for the fields of small space, large displacement, high load, weather-resistant vibration isolation, shock resistance, vibration reduction, shock absorption and buffering, such as driver seat vibration isolation , cab vibration isolation, engine vibration isolation, precision instrument vibration isolation, heavy precision instrument vibration isolation and anti-seismic, civil air defense and other building structures such as vibration isolation and explosion-proof fields, and can also replace shape memory alloys as an automatic reset type for building structures Damper, or used to act as a reset mechanism for other dampers. Background technique [0002] Since US3323785 authorized the oblique spring patent in 1967, due to the outstanding "zero" stiffness characteristics of the oblique spring, it has been widely used in the automatic con...

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Problems solved by technology

[0003] 1) The mechanical properties of designed oblique springs are limited by many geometric and mechanical conditions. It is difficult to design oblique springs with high load capacity to meet the application of medium and heavy load industries; at the same time, due to the welding process performance and the spring wire's bearing Huge torsional and shearing stress, it is difficult to process long-life heavy-load or super-heavy-load oblique springs to meet the shock absorption and earthquake resistance requirements of building structures;

[0004] 2) During the destabilization process of the compression bar, the supporting force near the zero position is the largest, and the same is true for the oblique spring designed on the basis of the destabilization principle of the depression bar; Zero inclination, although it realizes the characteristic of constant force and zero stiffness, it makes the starting force small, so it cannot be used in medium and heavy load occasions;

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