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Universal joint coupling is a mechanical device used to connect two non linearly arranged rotating shafts and transmit torque and rotational motion. This type of coupling occupies an important position in the field of mechanical transmission due to its unique flexibility, which can compensate for angular deviation, axial displacement, and radial displacement between shafts. It is an indispensable key component in modern mechanical transmission systems.
The working principle of universal joint couplings is based on spatial geometry principles, and torque transmission is achieved through cross axis or ball cage structures. When the input shaft rotates, the rotational motion is transmitted to the output shaft through the intermediate connecting piece, which can maintain the continuity of power transmission even if there is a certain angular deviation between the two shafts.
Input shaft connection end: connected to power source
Output shaft connection end: connected to the driven equipment
Intermediate connection mechanism: cross axis, ball cage or double fork structure
Bearing components: supporting and reducing friction
Sealing device: prevents lubricant leakage and contamination from entering
Cross axis universal joint coupling
The most common type consists of two fork shaped joints and a cross axis, allowing for an angle deviation of 10-45 °. The characteristics are simple structure and strong load-bearing capacity, but vibration may occur at high speeds.
Ball cage universal joint coupling
Using spherical cages and steel balls to transmit torque, allowing for greater angular deviation (up to 50 °) and smoother operation, commonly used in automotive transmission systems.
Double universal joint coupling
Composed of two single universal joints, it can eliminate speed fluctuations and achieve constant speed transmission, but the structure is relatively complex.
Flexible universal joint coupling
Using elastic components instead of metal connectors can absorb vibrations and impacts, making it suitable for precision transmission applications.
Maximum torque capacity: the maximum torque value that the coupling can transmit
Maximum speed: the highest speed within the safe working range
Allowable deviation angle: the maximum angle between axes that can be compensated for
Axial displacement compensation amount: allowable axial displacement distance
Radial displacement compensation amount: allowable radial offset distance
Torsional stiffness: the ability to resist torsional deformation
Service life: Expected service life under typical operating conditions
Automotive Industry: Transmission Shaft, Steering System
Construction Machinery: Excavators, Cranes
Machine tool equipment: CNC machine tools, milling machines
Metallurgical industry: rolling mills, continuous casting equipment
Shipbuilding Industry: Propulsion Systems
Wind power equipment: yaw system
Aerospace: Flight Control Systems
Torque demand: Calculate the maximum torque that the system needs to transmit
Speed range: Determine the working speed and critical speed
Deviation requirement: Evaluate the angular, axial, and radial deviations between axes
Environmental conditions: temperature, humidity, corrosiveness, etc
Installation space: Limitations on the size and installation method of the coupling
Maintenance requirements: lubrication method and maintenance cycle
Ensure that the shaft end is clean and free of burrs
Control the centering error within the allowable range
The prescribed torque for tightening bolts
Add an appropriate amount of lubricating grease before initial use
Regularly check for wear and tear
Supplement or replace lubricants periodically
Monitor vibration and noise changes
Timely replace damaged seals
As a key component in mechanical transmission, the performance of universal joint couplings directly affects the reliability and efficiency of the entire system. With the advancement of industrial technology, universal joint couplings are developing towards higher performance, longer lifespan, and greater intelligence, providing more reliable power transmission solutions for various mechanical systems.
« Universal Joint Couplings » Post Date: 2024/4/25 , https://www.rokeecoupling.net/tags/universal-joint-couplings.html