Double vane shaft universal coupling

Abstract

The invention discloses a dual-blade shaft type universal coupling which comprises two opposite dual-blade shaft forks which are arranged in the shell in a square crossing manner, wherein the dual-blade shaft forks are saddle-shaped; a lower base of the dual-blade shaft forks is a flange; the upper part of the dual-blade shaft type universal coupling is provided with two coaxial shaft heads extending out along opposite directions; the shell is in the shape of a hollow waist drum, and the axial center of the shell is provided with a through hole, so that the shaft heads of the dual-blade shaft forks can conveniently extend into the cavity of a drum-shaped body for mounting; four bearing holes are radially distributed in the peripheral wall of the drum-shaped body of the shell and are vertically intersected with the axis in pairs; the bearing holes are internally provided with bearing rings which are movably connected with the shaft heads of the dual-blade shaft forks. An original integral cross shaft structure is replaced by a design with two saddle-shaped dual-blade shaft forks, and a clearance for angular displacement is reserved between the axial directions of the two saddle-shaped dual-blade shaft forks, so that a limited space is reasonably utilized, the strength of each component is enhanced, and the carrying capacity of the universal coupling is also enhanced.

Description

technical field [0001] The invention relates to the technical field of shaft couplings, in particular to a double-leaf shaft universal coupling capable of transmitting large torque and bearing strong pulse loads. Background technique [0002] At present, the cross-shaft universal coupling is the most commonly used connection and transmission device for shaft transmission of mechanical products. It has been widely used in metallurgy, mining, chemical, general, agricultural machinery, textile and transportation industries. Its function is to connect The two shafts rotate together to transmit torque and motion, compensate the relative displacement of the two connected shafts and improve the system transmission dynamics. [0003] The structure of the traditional cross shaft universal coupling is as follows: figure 1 , 2 and 3 as shown ( figure 2 for figure 1 explosion map, image 3 for figure 1 cross-sectional view). In the figure, the coupling 100 is assembled by the cr...

AI Technical Summary

Problems solved by technology

[0004] When traditional cross-shaft universal couplings are used in heavy loads or occasions with strong pulse loads, accidents such as cross shaft breakage, fork head deformation or breakage, needle roller damage, circlip cracking or falling off, etc. often occur, resulting in bearing damage Or the scrapping of the entire coupling, resulting in equipment failure or safety accidents

Due to the limitation of the structure, if only to enhance the strength of the cross shaft, the strength of the original flange fork will be correspondingly reduced while increasing the diameter of the cross shaft. Therefore, it is urgent to design the structure of this part of the contradiction at this stage. improve

Images