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How does flexible coupling work?
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How does flexible coupling work?

Views:0     Author:Site Editor     Publish Time: 2021-05-17      Origin:Site

As we all know flexible coupling well, it is necessary for us to know the working principal of flexible coupling. Invention of flexible coupling dates back many centuries. Even though the flexible coupling’s mechanism seems simple, the physics behind this mechanism are rather complicated and interesting. We will understand the working of flexible coupling in a simple yet logical manner.

 

  • How does flexible coupling work?

  • How to use flexible coupling?

  • What are the applications of flexible couplings?

 

How does flexible coupling work?

The work of the elastic sleeve is compressed and deformed. Although the flexible coupling can compensate the axis displacement and elasticity, the allowable compensation amount for the axis displacement is less and the elasticity is weak because of the thin elastic sleeve, the small volume and the limited elastic deformation. The flexible coupling relies on the locking force of the pin group to generate the friction torque on the contact surface, and compress the rubber elastic sleeve to transmit the torque.

Flexible coupling is suitable for the transmission of small and medium power water pumps with high speed, high rigidity of the installation base, high centering accuracy, low impact load, and low vibration reduction requirements.

One of the high-review couplings, gear coupling is of enormous use in material apparatus, scoops, draglines, air blowers, blowers and fans. The explicit element of this sort of flexible coupling is that it gives a high torque weight proportion. High torque of gear coupling clears a path for little couplings and gives better yield. Gear coupling’s huge bore limit permits littler and less expensive couplings. Gear coupling is exchangeable, in this manner diminishing burden on the rigging network and expanding the center quality.

Typical applications of universal joints include aircraft, electrical appliances, control mechanisms, electronic equipment, instrumentation, medical and optical equipment, ordnance, radios, sewing machines, textile machinery and tool drives. The universal joint can be made of steel or thermoplastic. Under a given size, steel universal joints coupling have the greatest load-bearing capacity. Universal joints with thermoplastic body parts are used in light industrial applications. Its self-lubricating properties, light weight, negligible recoil, corrosion resistance and high-speed running capabilities are significant advantages. Spherical universal joints are used for high-speed operation and transmission of large torque.

 

How to use flexible coupling?

In order to facilitate the installation, put the two half flexible couplings in the incubator or oil tank for preheating, so that the inner hole size increases and it is easy to install. After installation, ensure that the shaft head of flexible coupling cannot protrude from the end face of the half flexible coupling, and it is better to be flush. Detect the distance between the two halves of the flexible coupling: take the average of the readings of 3 to 4 points measured along the two inner sides of the flange of the half flexible coupling, and the sum of the measured dimensions of the extension and the two diaphragm sets. The error is controlled within the range of 0-0.4mm.

Alignment: Use a dial indicator to detect the runout of the flange end and outer circle of the two halves of the flexible coupling. When the flange outer circle is less than 250 mm, the runout value should not be greater than 0.05 mm. When the flange outer circle is greater than 250 mm, the jitter value should not be greater than 0.08 mm.

Install the bolts: insert the bolts from the outside of the small hole of the flange, pass through the outside of the large hole of the other flange. Put on the buffer sleeve, elastic washer, twist the nut, and tighten the nut with a wrench. If it is not installed or dismantled, it is better to rotate freely after installation without damaging the shaft and the half coupling.

Before installation, check whether the two shafts of the prime mover and the working machine are concentric, whether there are wrapping paper and bumps on the surfaces of the two shafts, whether there are debris in the inner holes of the two half flexible couplings, and whether the edges of the inner holes have bruises. If any, the shaft and half flexible coupling should be cleaned up, and the bruises should be treated with a fine file. Then check whether the inner hole diameter and length of the two half flexible couplings are consistent with the diameter and shaft elongation of the prime mover and working machine. In general selection, it is better to make the length of the prime mover and the working machine end half-coupling less than its shaft elongation 10-30 mm.

Note: Before starting the equipment, check whether the nut of the plum flexible coupling is loose or falling off. If so, tighten the nut with a wrench in time. The load pipeline valve should be opened after starting the equipment with no load for 1 minute, while the shutdown sequence is reversed. Please paint the outside of the tire coupling with oil once a month.

 

What are the applications of flexible couplings?

The work of the elastic sleeve is compressed and deformed. Although the flexible coupling can compensate the axis displacement and elasticity, the allowable compensation amount for the axis displacement is less and the elasticity is weak because of the thin elastic sleeve, the small volume and the limited elastic deformation. The flexible coupling relies on the locking force of the pin group to generate the friction torque on the contact surface, and compress the rubber elastic sleeve to transmit the torque.

Flexible coupling is suitable for the transmission of small and medium power water pumps with high speed, high rigidity of the installation base, high centering accuracy, low impact load, and low vibration reduction requirements.

One of the high-review couplings, gear coupling is of enormous use in material apparatus, scoops, draglines, air blowers, blowers and fans. The explicit element of this sort of flexible coupling is that it gives a high torque weight proportion. High torque of gear coupling clears a path for little couplings and gives better yield. Gear coupling’s huge bore limit permits littler and less expensive couplings. Gear coupling is exchangeable, in this manner diminishing burden on the rigging network and expanding the center quality.

Typical applications of universal joints include aircraft, electrical appliances, control mechanisms, electronic equipment, instrumentation, medical and optical equipment, ordnance, radios, sewing machines, textile machinery and tool drives. The universal joint can be made of steel or thermoplastic. Under a given size, steel universal joints have the greatest load-bearing capacity. Universal joints with thermoplastic body parts are used in light industrial applications. Its self-lubricating properties, light weight, negligible recoil, corrosion resistance and high-speed running capabilities are significant advantages. Spherical universal joints are used for high-speed operation and transmission of large torque.

 

Learn more something about flexible couplings can know the working principal of flexible couplings and how to lubricate flexible couplings. If you want to buy good shaft couplings with reasonable price, FOSHAN HOUZHE TRANSMISSION EQUIPMENT CO., LTD. is your best choice. Whether from quality or price, or delivery time, we can help customers to open up a further and larger market. We have all types of different flexible couplings and if you have any questions, you can contact us or search us online.

 


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