Engaging rubber joint and method of making the same

A technology of rubber joints and manufacturing methods, which is applied to springs, springs, shock absorbers, etc. made of plastic materials, can solve problems such as failure to meet vibration reduction requirements, short service life, and large stiffness adjustment range, and achieve increased thickness Adjust the space and compression displacement, simplify the structure, and adjust the effect of a large range

CN104675894BActive Publication Date: 2016-11-16ZHUZHOU TIMES NEW MATERIALS TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-11-16

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Abstract

The invention relates to an engaged rubber joint, which comprises a mandrel, an elastic rubber body and a metal sleeve, and the mandrel, the elastic rubber body and the metal sleeve are integrally vulcanized together. The engaged rubber joint is characterized in that upper projections and lower projections which are distributed along the circumferential direction of the mandrel and have the same shape and size are arranged on the wall of the mandrel, the upper projections and the lower projections are symmetrically arranged relative to the central axis of the mandrel, both the upper projections and the lower projections are evenly and separately distributed along the axial direction of the mandrel, the width of the upper projection along the radial direction of the mandrel is less than or equal to the diameter of the middle part of the mandrel, and the inner wall of the metal sleeve is provided with inner upper projections engaged with the upper projections and inner lower projections engaged with the lower projections. The ratio of the radial stiffness and axial stiffness of the engaged rubber joint disclosed by the invention is less than 5:1, moreover, the radial stiffness and axial stiffness adjustment range is wide, the whole rubber joint has two different torsional stiffnesses, and therefore the service life is longer. The invention also provides a fabrication method of the engaged rubber joint.
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Description

technical field

[0001] The invention relates to the technical field of damping components, in particular to rubber joints and a manufacturing method thereof, which are mainly used in rubber elastic components for various locomotive bogies, and are also suitable for vibration damping parts of engineering machinery. Background technique

[0002] Rubber joint, also known as ball joint rubber, is a commonly used rubber-metal composite damping element, which can be widely used in various damping parts, especially in the bogies of rolling stock. The most common structure used in rubber joints is the three-piece structure (metal jacket + rubber + mandrel), and the performance of this structure basically meets the use of various working conditions. The disadvantage is that when the radial / axial direction of the rubber When the stiffness ratio is less than 5:1, this structure cannot meet the requirements. In recent years, with the advancement of technology, there have been serrated ...

Examples

Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Such as Figure 1 to Figure 7 As shown, the meshing rubber joint includes a mandrel 1, an elastic rubber body 2 and a metal jacket 3, the mandrel 1, the elastic rubber body 2 and the jacket 3 are integrally vulcanized together, and the shaft wall of the mandrel 1 is provided with a The upper protrusion 11 and the lower protrusion 12 distributed in the circumferential direction of the mandrel 1 and having the same shape and size, the upper protrusion 11 and the lower protrusion 12 are symmetrically arranged up and down with respect to the central axis of the mandrel 1, The upper protrusions 11 and the lower protrusions 12 are uniformly distributed along the axial direction of the mandrel 1, and the width of the upper protrusions 11 along the radial direction of the mandrel 1 is less than or equal to the The diameter of the middle part of the man...