2results about How to "Avoid bouncing up and down" patented technology

The utility model relates to the field of arc expansion joint, concretely relates to a plurality of lateral inclination's arc expansion joint, including installing on the mounting portion of beam body, the top of mounting portion is provided with first expansion unit, one end of first expansion unit is provided with second expansion unit, the utility model discloses a first expansion unit and second expansion unit are set up on the mounting plate, and the first lug, second lug, first butt block and second butt block are used to form expansion joint, the filler in the expansion joint can be fixed by up and down limit, avoid its up and down jumping situation, and cooperate with the arc design of mounting plate side wall, make the overall expansion joint be arc type, compared with linear type, its contact area is larger and the joint is gradually changed transition, avoid the stress concentration point of right angle joint, and arc expansion joint collocates filler, and the elastic deformation of material absorbs expansion amount, and simultaneously, the arc design prolongs the deformation path of material, and enhances durability.

This utility model relates to the field of wind turbine pitch reducer technology, specifically to a pitch reducer structure, including an output shaft and a housing. One end of the output shaft is connected to a planetary carrier. The output shaft includes a first connecting section and a second connecting section arranged sequentially from the outside to the inside along the axial direction. The second connecting section has external threads, and the inner wall of the planetary carrier has internal threads. The first connecting section has multiple external pin holes, and the planetary carrier has multiple internal pin holes. Matching internal and external pin holes together form mounting pin holes, with locating pins inside. The planetary carrier and the output shaft are axially positioned by the matching of internal and external threads, and circumferentially positioned by the matching of mounting pin holes and locating pins. A large tapered bearing and a small tapered bearing are provided between the housing and the output shaft, with the small tapered bearing positioned close to the planetary carrier. The reducer components in this design have reliable positioning, low risk of component failure, high safety, and can significantly reduce the risk of off-center loading.