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The Function Of The Coupling

Ningbo E.H Hydraulic Co.,Ltd | Updated: Jun 13, 2017

Couplings are usually used to connect the two shafts and transfer movement and torque during the period. It has the ability to absorb vibration and mitigate shock; it can be used as a safety device to prevent the connected parts from being subjected to too much load, to play the role of overload protection; When the shaft is connected, Scrow-on Couplings the machine stops working and the two shafts can be separated after disassembly.

Classification requirements

Fixed coupling: The center line of the two axes required to be connected is strictly aligned;

Removable coupling: Allows the two axes to have a certain installation error.

Elastic coupling: The elastic element material is different, it can compensate the displacement between the two axes within a certain range, and the function of cushioning and damping.

4. Displacement compensation

Coupling of the two shafts, due to manufacturing and installation errors, bearing deformation, bearing wear, rotating parts imbalance and temperature changes, the axis of the two axes often exist a degree of relative displacement and deflection;

Coupling to take a variety of different measures from the structure, so that the coupling has to compensate for the performance of various offsets, otherwise it will be in the shaft, coupling, Scrow-on Couplings bearing design caused by additional load, resulting in deterioration of the work situation.

The displacement types between the two axes are: axial displacement, radial displacement, deflection angle displacement and comprehensive displacement.

II. Coupling

1. Structural features

A. Simple structure, easy maintenance, can transfer larger torque;

B. However, there is a lack of compensation for the relative displacement between the two axes being joined;

C. To the neutral requirements of the two axes is very high, Scrow-on Couplings if the two axis of relative displacement, will be in the shaft, coupling and bearing on the additional load and serious wear, seriously affect the shaft and the normal work of the bearing; In addition, the shock and absorption vibrations cannot be mitigated when the load is transferred.

2. Applications

Connection of low speed, large torque, stable load, Scrow-on Couplings short and rigid shafts

3. Kind

Flange coupling and sleeve coupling two kinds.

4. Flange coupling Structure characteristics

A. Composition: two half coupling and a set of bolts with flange;

B. Working principle: Two half couplings with flange are connected by two shafts, then the two half couplings are connected together with bolts to transfer motion and torque.

C. Alignment: 1, through the mutual inlay of two half couplings with convex shoulder and groove respectively, the half coupling is connected with ordinary bolts, and the frictional torque generated by the normal bolts on the flange side contact surface is used, and the screw rod is subjected to extruding and shearing torque by means of reaming bolts. 2, two half couplings are made of convex shoulder, Scrow-on Couplings together with a split loop to achieve the alignment.

D. Apply: Low speed, large torque, load stable, short and rigid shaft connection.

E. Simple structure, large transmission torque, reliable transmission force, good neutral, easy disassembly and application, but no displacement compensation function, according to standard.


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