Henan serpentine spring safety coupling

Since the serpentine spring safety coupling is in point contact with the curved surface of the tooth, the coupling can obtain greater flexibility.It can be installed to work normally under conditions of radial, angular and axial deviations at the same time.The following methods are mainly followed during installation:

(1) Align the gap and angular deviation between the two-lobe couplings. When installing, measure the gap between the two-lobe Lingsi serpentine spring couplings every 90°. The larger value and the smaller value are The difference does not exceed 0.38mm.

(2) Correction of radial deviation.Put a ruler on the two-part coupling, measure it every 90°, and check with a ruler, the radial deviation does not exceed 0.38mm.

The temperature of the oil injection point of the serpentine spring coupling is ≥150℃, which can resist the action of centrifugal force. It has separation stability, no impurities, and does not corrode carbon steel and nitrile rubber. The lithium-based grease is better.Adequate grease is important for the work of the serpentine spring coupling, and it is recommended to check it once a year.Use a dry grease gun to inject grease until there is excess grease overflow in the hole.

The main structure of the serpentine spring safety coupling is composed of two half couplings, two half outer covers, two sealing rings and a serpentine spring sheet.It transfers torque by embedding the serpentine spring into the tooth grooves of the two coupling halves, and the coupling uses serpentine springs to be embedded in the tooth grooves of the two coupling halves to realize the link between the driving shaft and the driven shaft.During operation, the driven end is driven by the axial force of the active end tooth facing the snake spring to transmit torque, which largely avoids the occurrence of resonance, and the elastic variable generated by the reed when transmitting torque , So that the mechanical system can obtain a better damping effect.

The serpentine reeds of the serpentine spring safety coupling and the curved tooth surfaces on the outer gear shaft sleeve are difficult to manufacture due to their complex shapes.When manufacturing snake reeds, not only more forming molds are required, but also the dimensional accuracy is difficult to meet the design requirements.The formation of the snake spring is achieved by using a mold under heating, and then heat treatment. During the heat treatment, the arc of the reed is prone to problems such as micro cracks.Serpentine spring couplingBecause hot charging is carried out under high temperature and stress, it is necessary to fully estimate the problems that may occur.

The common possible accidents of serpentine spring safety couplings include the axis of the coupling being skewed and the coupling can’t advance. In order to prevent such accidents, in addition to the alignment of the axis, the position of the coupling hole and the shaft, and the striker When the position is correct, it should be noted that the position of the impact point should be selected, one or two strokes should be light, and only after a certain distance (about 1/3) of the person can be slammed.If it is indeed skewed and cannot be calibrated, it should be pulled out after being heated again, and it should not be rammed into it.Pay attention to the fact that the block pulley moves backward due to the improper position, the hoist chain slips down, the fuel is insufficient, and the fire alarm.

In order to reduce the breakage of the snake reed, attention should be paid to adjusting the concentricity error and angle error between the two shafts, and the value should be as small as possible than the design requirement.Improve the quality of the spring leaf.Pay special attention to material, hardness, heat treatment quality, etc. After heat treatment, there should be no defects such as cracks, and pay attention to removing sharp corners and sharp edges on the reed and tooth corner); improve the processing quality of arc tooth surfaces.Choose lubricating grease reasonably, not use thinner lubricating oil, but use aluminum disulfide lubricating grease with higher viscosity.To control the load, do not use overload; reduce the frequent effect of braking noise, especially emergency braking.When updating, a new type of elastic rod-pin coupling should be used.