A spacer design method for rod end ball joint

Abstract

The invention relates to the field of damping of elastic rubber parts, in particular to a spacer design method for a rod end ball hinge. The rod end ball hinge comprises a jacket, a mandrel and a rubber layer, a spacer is arranged in the rubber layer, and the spacer is on the spacer. Set the upper side of the spacer, the lower side of the spacer and the end face of the spacer, connect one end of the end face of the spacer to the upper side of the spacer, and connect the other end of the end face of the spacer with the lower side of the spacer relative to the upper side of the spacer. A tip B1 is formed between the end face and the upper side of the spacer, and the tip B1 between the upper side of the spacer and the end face of the spacer forms point contact with the mold, and the tip B1 is used to make point contact with the mold. Axial positioning reduces spacer tolerance requirements.

Description

technical field [0001] The invention relates to a spacer design method for a rod end ball hinge, belonging to the technical field of elastic rubber parts for shock absorption. Background technique [0002] Rod end ball joint is an important shock-absorbing connecting element, which is mostly used in trains, high-speed railways, automobiles, ships or airplanes. When the body is subjected to complex load conditions such as radial, torsion and deflection, it can withstand the deformation of the rod end ball joint. Offset torsion angle and radial load to prevent the body from rolling over during operation. The current rod end ball joint generally adopts the single-layer rubber joint form of metal outer sleeve-single-layer rubber layer-metal inner sleeve or pure metal joint form; the radial stiffness of the single-layer rubber joint is small, and it can only bear a small radial load. The anti-torsion load capacity is poor. Because the rubber layer is an integrated structure, the...

AI Technical Summary

Problems solved by technology

[0004] 1. The end face of the spacer is a conventional structure. Due to space constraints, the thickness of the spacer in the multi-layer rubber structure is usually very small, which makes the spacer easily deformed and difficult to position stably in the mold, which makes the distribution of the spacers in the finished product uneven. Average, affecting fatigue resistance, product life cannot be guaranteed

[0005] 2. With the existing design, when the radial load is large, due to the problem of the force angle, the product is still prone to poor fatigue resistance and product damage.

[0006] In view of the problem that the spacer is difficult to be positioned stably in the mold, in the prior art, the end of the spacer is usually set as figure 1 In the form of the rectangular end C on the right side of the dotted line D, the upper end face 7, the lower end face 10 and the side end face 8 of the rectangular end C are used for surface contact positioning with the mold between the end of the spacer and the mold. This method requires very high precision between the mold and the metal spacer, the tolerance of the spacer is poor, and the product cost is high

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