Tag: shaft coupling

Rigid couplings are an essential component in mechanical engineering, connecting two shafts to transmit power and torque while maintaining precise alignment. These couplings are designed to eliminate relative motion between shafts, ensuring efficient power transmission and reducing wear and tear on machinery. They have many advantages, including simple structure, easy assembly, convenient maintenance, low cost, high torque capacity, torsional stiffness, and zero backlashes. These couplings do not have the ability to cushion and compensate for the relative displacement of the two axes, requiring the two axes to be installed in strict alignment. But the structure is simple, low manufacturing cost, easy to install, dismantle, maintenance, can ensure that the two axes have a high degree of centering, transfer torque is larger, so widely used.

There are several types of rigid couplings available, each with its own unique design and applications. In this article, we will explore some of the most common types of rigid couplings used in various industrial settings.

The diaphragm coupling consists of at least one diaphragm and two shaft sleeves. The difference between the single-diaphragm coupling and the double-diaphragm coupling is the ability to handle various deviations, which requires the diaphragm to bend, so the single-diaphragm coupling is not suitable for eccentricity. The double-diaphragm coupling can be bent in different directions at the same time to compensate for eccentricity.

The diaphragm coupling is suitable for working in high temperature (-80+300) and harsh environments, and can operate under shock and vibration conditions. The diaphragm coupling can compensate for the axial, radial and angular offsets between the main motor and the driven motor due to manufacturing errors, installation errors, load-bearing deformation and the influence of temperature rise changes. Diaphragm coupling is a flexible coupling of metal elastic element. It relies on metal coupling diaphragm to connect the main and slave motors to transmit torque. It has the advantages of elastic vibration reduction, no noise and no lubrication. Ideal for gear couplings and general couplings. The diaphragm coupling has obvious shock absorption, no noise and no wear.

As the key elastic element of the diaphragm coupling, the diaphragm bears the main load during operation. When the diaphragm shaft coupling rotates, its angular offset will generate alternating stress, which alternates once per rotation. The dynamic stress of the diaphragm will lead to the fatigue damage of the diaphragm and the bolt, so the accurate calculation of the dynamic and static composite stress is the key to predict the life of the diaphragm shaft coupling and the operation of the diaphragm shaft coupling.

Shaft couplings are mechanical parts used to connect two shafts (driving shaft and driven shaft) in different mechanisms to rotate together to transmit torque. In high-speed and heavy-duty power transmission, some couplings also have the functions of buffering, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively connected with the driving shaft and the driven shaft. Most of the general power machines are connected with the working machine by means of couplings.

Shaft couplings are also called shaft couplings. A mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms to rotate together and transmit motion and torque. Sometimes it is also used to connect shafts and other parts (such as gears, pulleys, etc.). It is often composed of two halves, which are respectively connected by keys or tight fittings, and are fastened at the ends of the two shafts, and then the two halves are connected in some way. The shaft coupling can also compensate for the offset (including axial offset, radial offset, angular offset or comprehensive offset) between the two shafts due to inaccurate manufacturing and installation, deformation during operation or thermal expansion, etc. and shock mitigation and vibration absorption.

The flexible diaphragm coupling is composed of several groups of diaphragms (stainless steel thin plates) connected with the two halves of the coupling by bolts alternately. Each group of diaphragms is formed by stacking several pieces. The relative displacement of the two shafts is a high-performance metal elastic element flexible coupling.