Working principle and characteristics of elastic pin coupling

Published: 2021-03-14

The elastic pin coupling is a coupling made of non-metallic elastic raw materials according to the size of the pin holes of the two halves of the coupling, and the two halves of the coupling are connected by the flanges.The elastic pin is generally made of polyurethane and nylon with high elasticity and toughness. It has high tensile strength, and at the same time, it has good toughness and can play an excellent role in compensating for displacement.

Elastic pin couplingThe two halves of the coupling are connected by a pin, so it is very convenient to install and disassemble in use, and the disassembly can be completed without moving the power machine and mechanical equipment.Although this kind of coupling has the advantages of easy disassembly and maintenance-free, because it is a non-metallic original as the original coupling, it can withstand very little shear force and cannot be used in a heavy-load environment. It can only be used under low requirements. Used in low and medium speeds, this is the disadvantage of this type of coupling. Of course, if you need to transfer a heavy-duty coupling, you can choose our metal coupling or diaphragm coupling, the coupling produced by our factory There are many types of couplings, which basically cover the entire coupling series.

The elastic pin gear coupling is a pin made of a number of non-metallic materials, which is placed in the mating hole between the two halves of the coupling and the inner surface of the outer ring, and the two halves are connected through the pin to transmit torque. Shaft coupling.

Features of elastic pin gear coupling:

1. The transmission torque is large. At the same torque, the rotation diameter is mostly smaller than that of the gear coupling, and the volume is lighter. It can partially replace the gear coupling.

2. Compared with the gear coupling, the structure is simple, the component parts are less, the manufacturing is more convenient, and the gear processing machine tool is not needed.

3. Convenient maintenance and long service life. The nylon pin can be replaced by removing the baffle plate.

4. The nylon pin is a self-lubricating material and does not need lubrication, which not only saves lubricating oil, but also purifies the working environment.

5. Poor vibration reduction and high noise.

The elastic pin gear coupling has the performance of compensating the relative deviation of the two shafts. It is suitable for medium and high power transmission, and is not suitable for working parts that require vibration reduction and strict noise control.

The elastic pin coupling is a pin made of a number of non-metallic elastic materials, which is placed in the flange hole of the two halves of the coupling, and the two halves of the coupling are connected by the pin. The coupling structure is simple and easy It is more convenient to manufacture, assemble, disassemble and replace the elastic element, without moving the two halves of the coupling.The material of the elastic element (column pin) is generally selected from nylon, which has the ability to compensate for the deviation of the two axes in a small amount. The elastic part is sheared when working, and the working reliability is extremely poor. It is only suitable for the medium-speed transmission shaft system with very low requirements. For working conditions that require high working reliability.

The elastic diaphragm coupling relies on the metal diaphragm to transmit torque and absorb the deformation caused by misalignment. There is no relative movement between the parts, no friction and wear, so it does not need lubrication, which is in line with the development direction of oil-free process equipment.The gear coupling is a rigid movable coupling. It relies on the relative slip between the tooth surfaces to compensate for the misalignment of the two shafts. Therefore, the gear coupling should be lubricated, and the lubrication condition determines the gear coupling The key to good or bad work.Especially when running at high speed, it is prominent, such as under the action of centrifugal force, oil separation, leakage, etc., as well as the choice of lubricating oil, often because the lubrication design uses the bearing lubricating oil of the connected machine, rather than the appropriate load capacity Gear lubricants.Therefore, the lubrication problem of high-speed gear couplings is particularly prominent.On the other hand, the wear caused by the relative slippage of the tooth surface will cause a series of problems such as sludge and imbalance.Therefore, although gear couplings were once the choice for high-speed and high-power applications, with the emergence and development of diaphragm couplings, gear couplings have gradually faded out.