Welcome: Universal Coupling Factory
Language: Chinese ∷  English

News

Strength Analysis and Performance Effect of Diaphragm Coupling

Strength analysis of diaphragm coupling:
The diaphragm is the weak link of the coupling, take a piece of diaphragm to analyze its stress condition. When the torque is transmitted, part of the diaphragm is under tension, part of the diaphragm is under compression, the diaphragm group 1 is stretched, and the diaphragm group 2 is compressed and relaxed. When the coupling rotates at high speed, the centrifugal force generated by the mass of the diaphragm, bolts and washers makes all the diaphragms evenly tensioned. When compensating for axis l sentence and angular displacement, the diaphragm will be bent and deformed, and there will be bending stress in the diaphragm.

The movement principle of the diaphragm coupling:
If the axial displacement △K of the coupling is known. and the angular displacement △K, the axial and angular restoring force of the film ridge can be obtained, so that the axial deformation stiffness and the bending stiffness during angular deformation can be obtained. This paper mainly analyzes the torsional stiffness of the coupling. When the torque is delivered, the diaphragm is elastically deformed by force, which causes a small elastic hysteresis in the diaphragm coupling. The force of the diaphragm T is the nominal torque, r is the elastic hysteresis, and L is the center distance between the two bolt holes on the diaphragm. If the deformation of the coupling half and the bolt is ignored, the problem is simplified to a mechanical model.

Performance impact of diaphragm coupling:
The diaphragm coupling inevitably has installation errors such as axial deviation, angular misalignment, and radial misalignment. The influence of various installation errors on the mechanical properties of the diaphragm coupling will be analyzed below. Assuming that the axial error ΔKa of the diaphragm coupling is 3 mm, the radial error ΔKr is 0.15 mm, and the angular error ΔKw is 0.5°, the axial and angular installation errors have a great influence on the comprehensive displacement of the diaphragm coupling. The influence of radial error on the comprehensive displacement is relatively small. Since the large value of the equivalent stress of the diaphragm coupling appears at the bolts of the outer ring, it is mainly caused by the pre-tightening force of the bolts. The installation error has little influence on the large value of the equivalent stress, but the installation error has little effect on the equivalent stress of the diaphragm group and its The distribution law has a great influence.

(1) Considering the bolt pretightening force, torque, centrifugal force and other loads, the calculation model of the diaphragm coupling is established, and the influence of the installation error on the mechanical properties of the diaphragm coupling is studied through contact finite element analysis.

(2) The equivalent stress values of each diaphragm are quite different, the diaphragm stress at both ends is large, the middle diaphragm decreases in turn and the distribution is relatively uniform, and the influence of centrifugal force on the diaphragm stress is more obvious.

(3) Installation errors such as axial deviation, radial misalignment, and angular misalignment have a greater impact on the comprehensive displacement and equivalent stress of the diaphragm group, among which the angular error has a greater impact, and the angular error should be strictly controlled during installation .
PREVIOUS：Problems that should be paid attention to in NEXT：Structure and working principle of tire coupl

RELATED NEWS

CATEGORIES

LATEST NEWS

CONTACT US

Contact: Mr Wang

Phone: 86-19932127135

Tel: 0311-69772900

Email: linda@rongxingcoupling.com

Add:  No.58,Zhongshan Road,Shijiazhuang,Hebei, China