LZ type pin couplingIt uses a pin with an elastic sleeve (rubber material) at one end to be installed in the flange hole of the two halves of the coupling to realize the connection of the two halves of the coupling.The elastic sleeve pin coupling was once a widely used coupling in my country, and it was formulated as a standard for the Ministry of Machinery in the late 20s.
The LZ type pin coupling has a relatively simple structure, easy to manufacture, does not require lubrication, does not need to be bonded with metal vulcanization, it is convenient to change the elastic sleeve, does not need to move the half coupling, and has the properties of compensating for the relative deviation of the two shafts and damping.The elastic sleeve works by compression and deformation. Because the thickness of the elastic sleeve is thin, the volume is small, and the elastic deformation is limited, the elastic sleeve pin coupling can compensate the axis displacement and elasticity, but the allowable compensation amount for the axis displacement is less. The elasticity is weak.The elastic sleeve pin coupling relies on the locking force of the pin group to generate the frictional moment on the contact surface, and compress the rubber elastic sleeve to transmit the torque.It is suitable for small and medium-power shafting transmissions with good rigidity of the installation base, high centering accuracy, low impact load and low vibration reduction requirements.
According to the requirements of mechanical characteristics, such as transmission torque, stiffness requirements, shock, impact, erosion, transmission accuracy, etc., determine the appropriate coupling type.
The large torque transmitted by the coupling should be less than the allowable torque value.The determination of large torque should consider the acceleration and deceleration torque and overload torque required for machine braking.However, when the data is insufficient or the analysis is difficult during design, and the large torque is difficult to determine, it can be selected according to the calculated torque.That is, the allowable torque value is not exceeded.