Hydraulically assisted elastic support device

Abstract

The invention discloses a hydraulic auxiliary elastic support device. It includes a base and a metal-rubber composite elastic element, the base and the metal-rubber composite elastic element are connected by fasteners, the metal-rubber composite elastic element includes a rubber body and at least one layer of annular metal sheet distributed in the rubber body, the metal-rubber composite elastic The bottom of the element is provided with a bottom inner cavity, and a sealing diaphragm is arranged in the bottom inner cavity, and a mounting groove is arranged on the base, and a tightening disc is placed in the mounting groove, and the bottom edge of the sealing diaphragm is fixed on the in the mounting slot of the base. After adopting the above structure, the structural design is reasonable, the intercommunication is good, and the supply of hydraulic oil is guaranteed. The inlet valve is located on the same side, which facilitates liquid injection and ensures the reliability of use. In addition, the cross-sectional shape of the annular metal sheet is an umbrella structure. , so that the side of the elastic body bears a large area, improves the impact capacity, avoids the damage of the metal-rubber composite elastic element, and further ensures the service life.

Description

technical field [0001] The invention relates to an elastic support device, in particular to a hydraulically assisted elastic support device, which belongs to the technical field of wind power engines. Background technique [0002] Metal and rubber composite elastic elements are used in many engineering fields, mainly for damping vibration and force; their spring elements generally have three-way stiffness, namely X (axial), Y (radial), and Z (longitudinal) The stiffness, which is predetermined by the metal skeleton, the type, size, taper and number of rubber layers, and where appropriate can be designed to be variable within certain limits after installation of the spring element. [0003] In the installation and use of wind power generators, the existing structure is elastically supported by mechanically adjustable gearboxes. The two torsion arms of the generator set are supported by elastic supports respectively. Each torsion arm is supported by two elastic bodies up and d...

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Problems solved by technology

[0005] The applicant found that although the extremely low horizontal stiffness and vertical stiffness no longer constrain the main axis, as the wind power generation technology matures, the power of a single unit continues to increase, and the structure of the unit becomes larger and larger, and its structural dynamic characteristics are relatively better. Complex, when working, the elastic body spring element is always in a state of bearing vibration, so its above-mentioned structural form will have the looseness cited by vibration, which will affect the sealing effect after loosening, and cannot provide stable and reliable pressure. At the same time, in During use, it was found that under working conditions such as yaw, the main shaft rigidly connected to the gearbox in the 4-point supported double-fed fan has small constraints, and it frequently collides with the bearing seat under loads such as inertia, and the original design prestressed elasticity The body spring element has no adjustment device to adjust the shaft center of the main shaft (rigidly connected with the gearbox), which reduces the reliability of ensuring the stable operation of the fan for a long time

[0006] In addition, the spring in the existing metal-rubber composite elastic element is horizontally arranged in the rubber body, so that the horizontal stiffness is poor, and it is easy to deform, resulting in damage to the metal-rubber composite elastic element, which affects the service life

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