Conical spring stiffness adjusting method and structure

Abstract

The invention provides a conical spring stiffness adjusting method. A conical spring comprises an outer sleeve, a rubber body and a mandrel. The rubber body is vulcanized between the outer sleeve and the mandrel. A flange is arranged outside the lower end of the mandrel. A partition plate is arranged in the rubber body, when the lower end of the inner rubber body between the mandrel and the partition plate moves downwards, the inner rubber body bears dual restraints of the flange and the partition plate, and therefore the vertical stiffness of the conical spring is improved. The vertically distributed partition plate is arranged in the rubber body, so that when the lower end of the inner rubber body between the mandrel and the partition plate moves downwards, an outward convex arc section and an outward convex linear section are gradually attached to the upper surface of the flange and are limited in a space defined by the outer side of the mandrel, the upper surface of the flange and the inner side of the partition plate, so that the vertical stiffness of the conical spring can be greatly improved. The vertically distributed three-section type partition plate is arranged in the rubber body, so that the nonlinearity of the vertical stiffness of the conical spring is improved, and the transverse stiffness of the conical spring is improved.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to the improvement of conical springs on vehicles. Background technique [0002] Conical springs, also known as axle box springs, mainly refer to springs that combine metal and rubber on vehicles with a damping effect. The conical spring is installed between the rail vehicle axle box and the frame to play the role of support, shock absorption and noise reduction. It is a commonly used rubber-metal composite vibration and noise reduction component. It is installed in the primary suspension and secondary suspension of vehicles. On the car body, the main function is to bear the load of the car body and frame. The tapered metal parts and the rubber are vulcanized into a whole under a certain temperature and pressure through the adhesive. Its function is to use the vulcanized rubber to reduce vibration and noise, and the metal parts to support and install the interface. [0003] With...

AI Technical Summary

Problems solved by technology

With the development of vehicle technology, its fatigue load is becoming more and more severe, and the requirements for fatigue performance are becoming more and more stringent. The structure of the current conical spring will wrinkle during use, and the rubber part of the conical spring will be damaged after a long time. Cracking seriously affects the stiffness of the conical spring, thereby affecting its performance

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