4 results about "Easy fatigue" patented technology

The invention discloses a puncture type electric power fitting, and relates to the technical field of electric power fittings. The insulation piercing wire clamp aims to solve the problems of stress concentration, easy fatigue failure of contact points, uneven support and the like caused by piercing point concentration of an existing insulation piercing wire clamp. According to the invention, two groups of accommodating cavities and conductive assemblies are symmetrically arranged in an insulating shell; a plurality of groups of arc-shaped retainers which are arranged at equal intervals are arranged in each accommodating cavity, and puncture assemblies which radially displace are slidably mounted at two ends of each arc-shaped retainer; a push-pull support is slidably mounted on one side of the arc-shaped holder and used for driving the two puncture assemblies to synchronously contract or expand in the radial direction. The rotary supporting frame provides sliding support for rotation of the arc-shaped holding frame and the push-pull support, and an adjusting mechanism for controlling the push-pull support to move is installed on the rotary supporting frame. The rotation control piece is used for driving the multiple sets of arc-shaped retainers to rotate at equal difference angles. According to the technical scheme, the puncture points are spirally and uniformly distributed along the outer ring of the wire, so that the puncture stress is dispersed, and the contact reliability and the anti-seismic performance are improved.

The utility model relates to the technical field of worms, in particular to an anti-impact worm which comprises a main shaft body, a buffer layer, a damping assembly and a supporting ring. Arc-shaped reinforcing ribs are arranged on the outer surface of the main shaft body, the buffer layer is composed of a high-elasticity rubber layer and a hard alloy coating, the damping assembly comprises an end cover, a spring ring and a damping fin, and the supporting ring is provided with a flow guide groove and balls. By optimizing the structural design and material selection, the tooth crest strength is enhanced, the impact force in the punching process is dispersed, the dynamic load is absorbed, abrasion and friction loss are reduced, and the operation stability and durability are improved. The worm solves the problems that in the prior art, under the high-load and impact working conditions, fatigue fracture is prone to occurring, tooth surfaces are abraded, and the impact resistance is insufficient, and the high-performance transmission requirement is met.

A shell-imitated rubber bushing design method based on a microcosmic contact mechanical model belongs to the technical field of rubber bushings, and comprises the following steps: designing a shell-imitated rubber knuckle bearing with a steel-rubber-steel interface synergistic structure; the method comprises the following steps: performing a uniaxial tensile test on a rubber bushing material to obtain stress-strain data, processing the test data by using a fitting tool, and selecting a rubber constitutive model according to a deviation value between a fitting curve and a test curve; performing contact stress analysis and static stiffness calculation on the bionic rubber bushing; the radial contact area of the rubber bushing is calculated, and the steel-rubber interface contact area is optimized by controlling the geometric angle and radius of a steel layer; and importing a single stress-strain result obtained by finite element analysis into fatigue analysis software, and predicting the fatigue life of the rubber bushing. The shell bionic structure is applied to the heavy-duty truck chassis rubber bushing, and the technical problems that an existing heavy-duty truck rubber bushing is insufficient in rigidity and prone to failure due to fatigue under high-strength dynamic loads are solved.

The invention relates to a tension spring ring hook technology, a tension spring and a pull rod assembly. The tension spring ring hook technology comprises the following steps that material preparation is conducted, specifically, a first metal body capable of generating deformation is prepared; in the first deformation stage, the first metal body is machined, so that the first metal body is spirally stacked in the first direction, a columnar space with the diameter being R is reserved in the second direction perpendicular to the first direction, and a first deformation body is formed; in the second deformation stage, the first end of the first deformation body and the second end away from the first end are bent, so that an included angle is formed between the first end and the middle section of the first deformation body and between the second end and the middle section of the first deformation body. The purpose of the invention is to overcome the defects in the prior art. The invention aims at providing a tension spring ring hook process, a tension spring and a pull rod assembly to solve the problem that an existing tension spring is prone to fatigue fracture.