Eccentric gear type torsional vibration exciter and eccentric gear type torsional vibration excitation system

Abstract

The embodiment of the invention discloses an eccentric gear type torsional vibration exciter comprising a shell; a driving shaft which is rotatably supported on the shell, wherein one end of the driving shaft is used for being connected with a rotation driving component; a driven shaft which is rotatably supported on the shell, wherein one end of the driven shaft is used for installing a tested test piece; a driving eccentric gear which is arranged on the driving shaft; and a driven eccentric gear which is arranged on the driven shaft, wherein the driving eccentric gear is engaged with the driven eccentric gear. Dynamic torsional vibration performance and durability testing can be performed on rotary power transmission component test pieces with a buffering and vibration damping function like an elastic coupler under the dynamic situation of high-speed rotation, and torsional vibration parameters can be adjusted so that torsional vibration bearing and torsional vibration elimination and isolation performance of the test pieces can be detected via simulating a practical working condition, and the fatigue durability life of the test pieces can be detected. The invention also discloses an eccentric gear type torsional vibration excitation system.

Description

technical field [0001] The invention relates to the technical field of torsional vibration exciters, more specifically, to an eccentric gear type torsional vibration exciter and an eccentric gear type torsional vibration excitation system. Background technique [0002] In the mechanical transmission industry, power transmission is often carried out through rotating connectors such as elastic couplings. Rotating connectors such as elastic couplings are key components for power transmission. They need to withstand torsional vibration, reduce and isolate torsional vibration performance, and require certain fatigue durable life. Therefore, it is often necessary to conduct torsional vibration and reduction, torsional vibration isolation performance and fatigue durability tests to obtain the corresponding relationship between design parameters and performance, so as to optimize the design. [0003] At present, the torsional vibration test methods for rotating joints are basically...

AI Technical Summary

Problems solved by technology

[0003] At present, the torsional vibration test methods for rotating joints are basically divided into two categories: one is the test in a static state where one end of the test piece is fixed on the bench and an alternating torque is applied to the other end. Under high-speed working conditions, the elastic element of the tested workpiece is subjected to a real torsional vibration state under the action of a large centrifugal force, and the test result data is quite different from the actual working condition; the other is that the test piece is installed on the actual working device. It is carried out under the condition of running and rotating, but the cycle is long and the cost is high

[0004] Taking the power output torsional vibration damper configured between the automobile engine and gearbox as an example, it is subjected to complex dynamic torsional vibration loads during use, and it is necessary to simulate the use state for vibration reduction, vibration isolation performance tests and durability assessment tests. None of the original bench test methods can reflect the real working state of the power output torsional vibration damper under the actual high-speed working condition when it is subjected to a huge centrifugal force

To test the actual use effect, it is generally necessary to conduct a matching test on the entire vehicle, but the vehicle test cycle is long and expensive, and it can only be carried out after the completion of the vehicle manufacturing, which seriously affects the development process of the vehicle project

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