A Parallel Mode Semi-Active Vibration Isolator

Abstract

The invention discloses a paralleling model semi-active vibration isolator. The vibration isolator is characterized in that a cylindrical upper shell is arranged, a rubber main spring is plugged in a top end opening of the upper shell, a main spring framework penetrates through the rubber main spring and is provided with an upper connection stud and a lower connection stud, the upper connection stud is connected with a main vibrating object, the lower connection stud is connected with a column-shaped iron core where an excitation coil is wound, the column-shaped iron core is supported in a magnetism conduction sleeve through a cutting magnetorheological elastomer arranged on the outer circumference of the column-shaped iron core, the two ends of the magnetorheological elastomer are extruded to be connected with the top of a T-shaped support and the bottom end of the iron core, and the T-shaped support penetrates through the magnetism conduction sleeve and is fixedly connected; the upper shell is connected with a lower shell, the lower end of the T-shaped support is fixedly connected with the lower shell, and the bottom of the lower shell is provided with a connection bolt used for being connected with a basal body. By means of the vibration isolator, vibrating energy transmitted by a rotary machine to the basal body can be effectively reduced, vibration of relative parts of the rotary machine is reduced, and the service life of the rotary machine and a system of the rotary machine is prolonged.

Description

technical field [0001] The invention relates to a vibration isolation mechanism in a vibration system, more specifically a vibration isolation mechanism suitable for automotive powertrain suspension systems, ship power systems, medical equipment systems, special equipment carriers, machine tool processing equipment, etc. A parallel mode semi-active vibration isolator. Background technique [0002] Rotating machinery is a power output component widely used in the engineering field. During the use of rotating machinery, there are generally disturbance excitations that vary with their rotational speed. Taking the internal combustion engine as an example, when the internal combustion engine is working, the pitching moment generated by the cylinder pressure and the reciprocating inertial force is the main disturbance excitation of the internal combustion engine, and the frequency of the disturbance torque is twice the angular frequency of the internal combustion engine’s rotation...

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Problems solved by technology

However, since the load of rotating machinery is generally large, if the magnetorheological elastomer is directly used as a vibration isolation element to bear the load of the rotating machinery, it will often exceed the yield strength limit of the magnetorheological elastomer, which will easily cause the magnetorheological elastomer The damage of the damage, and the stiffness of the magnetorheological elastomer working alone in the shear mode or extrusion mode is limited, so that the frequency shift range of the vibration isolation element is limited, which limits the magnetorheological elastomer to a certain extent. Application of vibration isolation technology in vibration system with heavy load

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