The precautions for the use of the coupling and the characteristics of the elastic pin gear coupling

Coupling is the intermediate connecting part of each movement mechanism, and it has a direct impact on the normal operation of each movement mechanism. Therefore, you need to pay attention to:

XNUMX. Couplings are not allowed to have more than the specified shaft center line skew and radial displacement, so as not to affect its transmission performance.

15. The tooth thickness of the gear coupling is worn out. When the lifting mechanism exceeds 25% of the original tooth thickness, when the operating mechanism exceeds XNUMX%, it should be scrapped. If there is a broken tooth, it should also be scrapped.

XNUMX. If the elastic ring of the pin coupling and the sealing ring of the gear coupling are damaged and aging, please pay attention to timely replacement.

XNUMX. The bolts of the coupling must not be loose or damaged.

70. The contact length of the tooth width of the gear coupling shall not be less than 5%; the axial movement shall not be greater than XNUMXmm.

Six, the coupling is not allowed to have cracks, if there is a crack, it needs to be replaced (it can be knocked with a small hammer, judged by the sound).

XNUMX. The keys of the coupling should be tightly matched and must not be loosened.

2. Gear couplings and Oldham couplings should be lubricated regularly, and grease should be added once every 3 to XNUMX months to avoid violent wear of gear teeth and serious consequences.

Coupling refers to a device that connects two shafts or a shaft and a rotating part, and rotates together in the process of transmitting movement and power, and does not disengage under normal conditions.Sometimes it is also used as a stabilizing device to prevent the connected parts from being subjected to excessive loads and play a role in overload protection.

The coupling is connected with the reducer and the crushing roller.The output power of the motor is transmitted to the crushing roller by the reducer.The external load acts directly on the crushing roller and acts on the reducer through the coupling.Due to the complex working conditions of the crusher, a large amount of large coal gangue is produced during the crushing process.Large pieces of coal gangue periodically fall from a high place, forming a periodic impact on the crushing roller.Periodic peak shocks are likely to cause gear wear, gear fatigue damage, bearing damage and outer case cracking.

As the connecting part of the crushing roller and the reducer, considering the vibration reduction effect of the reducer, it can absorb vibration and reduce the impact peak of the reducer.Load and vibration can easily damage the reducer.The crusher roller assembly mainly includes the crusher tooth roller, two supporting bearings at the shaft end and a coupling.After the coupling is produced, it needs to be packaged.Some couplings have aluminum caps on the surface, so they are afraid of falling off.Some couplings are loaded and unloaded many times during long-distance logistics transportation, which will cause surface scratches.

In order to avoid these problems and cause time and loss to the user, the coupling manufacturer needs to pack it before leaving the factory.The coupling is connected with the output shaft of the reducer, and the output shaft of the reducer is equipped with a large gear.The end of the shaft is supported by two bearings.When choosing a coupling, it must be considered that it can transmit enough torque and has the corresponding anti-vibration and damping functions.Now there are many coupling requirements for heat treatment, some require quenching, and some require tempering. Through tempering, the internal structure of the material is changed to enhance toughness and tempering hardness.

The elastic pin gear coupling is a highly elastic coupling with rubber or polyurethane as the elastic element. It has the characteristics of light weight, convenient installation, large displacement compensation in all directions, large damping, vibration absorption capacity and frequency modulation, etc., which can better Protect the main coupling, gear box and shafting.So, what are the factors that can cause damage to the coupling? Perform torsional vibration tests on the ship.Concluded as follow:

XNUMX. Excluding its own quality problems and torsional vibration first, according to the principle of high elastic coupling, it is a torsional load-bearing rubber component. The rubber component can be designed in single row or multiple rows, and each rubber component has a variety of standard stiffness options. , It can meet the rigidity requirements determined by the torsional vibration calculation in a wide range. The drum-shaped gear coupling, the main purpose of using the high elastic coupling in the marine power system is to transmit power and torque, and compensate for radial and axial Compensate the oscillation of the rotational momentum by summing the angular alignment error.Adjust the natural vibration frequency of the system.

XNUMX. The elastic element shock absorber sinks, causing the shafting to be misaligned and generating additional torque!The rubber of the elastic pin gear coupling is prone to thermal fracture.All equipment in the shafting system, such as diesel couplings, high-elasticity pin gear couplings, gearboxes, other parts of the shafting system, propellers, etc., have a good design and complementary support to each other in order to improve the design level.