6 results about "Torsional vibration" patented technology

A torsional vibration damper, especially for transmission of torque in a hydrodynamic torque converter, includes a primary side, a secondary side, and a plurality of damper spring arrangements arranged between the primary side and the secondary side such that the primary side is rotatable relative to the secondary side against an urgency of the damper spring arrangement. Each damper spring arrangement has at least one spring and is supported in each circumferential end area at a supporting area of the secondary side and at a first and a second supporting area of the primary side which are arranged on both axial sides of the associated supporting area of the secondary side. The primary side has a substantially annular carrier part and at least one of the first and second supporting areas of the primary side are constructed as separate parts that are connected for rotation with the primary side.

The invention discloses a transmission mechanism for realizing compound motion of rotation and torsional vibration based on transmission with few tooth differences. The motion input is realized by the eccentric shaft connected to the power source; the motion conversion mechanism is realized by the external gear that is free from the eccentric shaft and the internal gear that meshes with the external gear; the motion output mechanism is realized by the fork pin that is fixedly connected with the external gear 1. A compound motion output element with a shift fork slot plugged in with the shift fork pin is realized. Among them, the eccentric shaft, external gear, and internal gear form a standard transmission with few tooth differences, which converts the input rotary motion with a speed of n (rpm) into a low-speed revolution with a speed of n/i (rpm) and a speed of n (rpm), radius of gyration It is the high-speed rotary plane motion of e1; the fork pin and the compound motion output element realize the conversion of the compound motion of the external gear into the compound motion of rotation and torsional vibration and output it. Compared with the existing transmission scheme, the structure of the mechanism is greatly simplified, the matching range of motion parameters is wider, and it can be widely used in vibration tapping, vibration drilling, vibration grinding and other mechanical processing technical fields.

The invention discloses a torsional vibration protection method and system for a transmission chain of a wind generating set. The method comprises the following steps: 1) acquiring a generator rotating speed component under the modal characteristic frequency of the transmission chain; 2) performing logical operation on the generator rotating speed component to obtain a logical operation value; 3) comparing the logic operation value with a preset threshold value; and if the logic operation value is greater than a preset threshold value, starting a transmission chain torsional vibration protection mode. The device has the advantages that torsional vibration of the transmission chain is avoided, reliability is high, and universality is high.