Analysis on the malfunction of the concrete vibrating machines

Because of the special nature of the vibrator , has been in a state of vibration , even better quality machine, then subjected to a long run , there will be some failures, many vibrators plants are facing such problems . Together to understand the following about what are the characteristics of mechanical failure , and to analyze these features , so that more people can understand the two.

Mechanical failure is associated with wear, corrosion, fatigue and aging mechanism inseparable, according to the general process of the formation of mechanical failure , mechanical failure has the following features:

(1) potential . Machinery in use there will be a variety of injuries , damage caused by structural parameters of components change, so that when the development of structural damage exceeds the allowed parameter values to parts , namely a potential mechanical failure. Because there are some within the margin ( safety factor ) mechanical design, so even if some parts of the structural parameters exceed the allowable value , the mechanical function of the output parameters of the permissible range , that did not happen mechanical malfunction. From the development of potential failure malfunction generally have a longer period of time, because through lubrication, cleaning , tightening , adjusting other means, can eliminate or slow the progression of damage , so the potential failure to obtain a degree of control and even eliminated. Potential for mechanical failure of malfunction can be reduced by the occurrence of maintenance, thus greatly extending the life of the machine .

( 2 ) gradual onset . Due to wear , corrosion, fatigue and aging process is closely related to the occurrence and time , so the occurrence of mechanical failure mostly related to time . In use , mechanical damage is generated gradually , the structural parameters of the parts also changes slowly , the number of mechanical gg # is gradually deteriorating . The vast majority of failures may advance through testing and monitoring instruments , the probability of failure of the mechanical operation of time-related , the longer the mechanical use of time, the greater the probability of failure . Gradual onset of failure to make the majority of mechanical failures can be prevented , so vibrators plant maintenance personnel should always troubleshooting , maintenance , as appropriate , in order to ensure longer machine life .

( 3 ) diversity. Mechanical use, due to wear , corrosion, fatigue , aging process simultaneously , the same components are often multiple failure mechanisms exist to produce a variety of failure modes , such as the shaft bending deformation , wear, fatigue fracture . These failures not only different failure mechanisms and manifestations , and distribution models and the impact of different levels , so that the fault showing diversity. Mechanical failure of diversity requires different failure mechanism and mode of study alone .

( 4 ) ambiguity. Machinery use, due to the impact of various usage and environmental conditions , changes in their injury and output parameters have a certain randomness and dispersion, while the influence of factors such as materials and manufacturing various limits mechanical, the initial value also has a different distribution , the same machinery, in different environments , output parameters over time also has a different distribution , resulting in failure criterion parameters and have some dispersion, so that mechanical failure occurs and discriminant standards have a certain ambiguity. Mechanical failure of ambiguity to mechanical failure diagnosis and discrimination adds a certain degree of difficulty , but also requested a study of mechanical failure must combine macro and micro .

( 5 ) loss of . Mechanical wear , corrosion, fatigue , aging process is accompanied by changes in energy and mass , the process is irreversible. Manifestations of aging and gradually increasing the degree of mechanical failure is increasing. With the increasing use of time, although the exclusion of partial failure to restore the mechanical properties , but mechanical failure rate is still rising , new fault will continue to emerge. While also eliminating damage incompleteness , repair is impossible to restore the mechanical properties to the state prior to use . The wear and tear of mechanical failure determines the difference between the level and depth of mechanical maintenance , while mechanical failure distribution model can not simply be described by an exponential distribution .