Rubber joint for rail vehicle oil pressure damper and rubber formula thereof

Abstract

The invention discloses a rubber joint for a rail vehicle oil pressure damper. The rubber joint comprises a coat layer, a rubber layer and a central spindle. The middle portion of the central spindle is sleeved with the rubber layer, the rubber layer is closely bonded with the central spindle, the rubber layer is sleeved with the coat layer, the section of the contact surface of the coat layer and the rubber layer is rectangular, and the side face of the rubber layer is in a concave arc shape. A rubber formula of the rubber layer comprises, by mass, 80-90 parts of natural rubber, 10-20 parts of synthetic rubber, 0.6-1 part of sulfur, 0.8-1.2 parts of benzothiazole-2-thiol, 2.2 parts of 2,2'-dithio-dibenzo thiazole, 0.8-1.2 parts of diphenyl guanidine, 0.4-0.8 part of hexamethylene tetramine, 4-8 parts of hardening resin, 3 parts of zinc oxide, 1 part of stearic acid, 1 part of N-phenyl-N'-cyclohexyl-P-phenylenediamine, 1 part of 2-benzothiazolethiol, 1 part of poly(1,2-dihydro-2,2,4-trimethylquinoline), 1 part of paraffin and 30-50 parts of carbon black. The rubber joint with the rubber layer produced through the formula has strong torsion, radial rigidity, axial rigidity, deflection rigidity and torsion rigidity, and is high in product performance and long in service life.

Description

technical field [0001] The invention relates to the technical field of locomotive accessories, in particular to a rubber joint for an oil pressure shock absorber of a locomotive and a rubber formula thereof. Background technique [0002] With the rapid development of high-speed railways, the speed of trains has increased significantly. Now the speed of high-speed trains has increased from 200km / h to about 350km / h, and will reach more than 400km / h in the near future. Due to the high-speed operation of trains, the vibration and noise during operation are constantly increasing, which increases the structural fatigue of the vehicle and reduces the stability and safety reliability of the vehicle. Rubber joints for oil pressure shock absorbers of locomotives are a product with excellent performance compounded by rubber and metal, which can withstand complex working environments. However, the existing rubber joints have low adhesion between rubber and metal and short service life. ...

AI Technical Summary

Problems solved by technology

Due to the high-speed operation of the train, the vibration and noise during operation will continue to increase, which will increase the structural fatigue of the vehicle and reduce the stability and safety reliability of the vehicle.

Rubber joints for oil pressure shock absorbers of locomotives are a product with excellent performance compounded by rubber and metal, which can withstand complex working environments. However, the existing rubber joints have low adhesion between rubber and metal and short service life. , limited resistance to various fatigue effects and mechanical shocks mentioned above, and poor physical properties of rubber parts

Images