Shot blasting machine performance indicators
Shot blasting machine electric actuator can run reliably, whether in the specified time and the provisions of the conditions to complete the specified function, the key lies in its performance indicators. Performance indicators are generally expressed in terms of MTBF, which includes parameters such as basic error, hysteresis, damping, dead zone, and so on. These parameters to some extent reflect the shooting machine electric actuator performance is good or bad.
Key performance indicators and current problems
The relevant technical parameters of the electric actuator of the kind of shot blasting machine: the number of input channels is 1, the resistance is 250Ω, the basic error is 1%, the hysteresis is 1.5%, the dead zone is 0.5% ~ 3% adjustable, the damping characteristic has no disturbance The Although some of these technical parameters of the electric actuator of the shot blasting machine can be compared with the foreign counterparts, but due to the domestic production enterprises imperfect operating mechanism constraints, there are the following drawbacks:
(1) ignore the research and development of the basic technology of shot blasting machine;
(2) the quality of common components of shot blasting machine is not high;
(3) enterprises on the shot blasting machine production quality management is not strict.
2. Failure analysis
(1) shot blasting machine running early
The beginning of the operation is running-in period. During which the fault is more complex, there are many reasons, such as selection issues, design and manufacturing problems or installation and environmental issues. If the torque is too small may affect the speed of its adjustment or even simply can not be adjusted.
The actual application of the following: the design did not pay attention to the connecting rod and the executive body of a solid connection, there shed phenomenon; installation of power lines and signal lines with the same threading tube, resulting in large signal interference; near unshielded Large motor equipment, the impact of the stable operation of the motor; position locator insurance selection is too large, resulting in its internal choke coil damage. For these issues, we must observe in a timely manner, timely detection and processing, so as to avoid unnecessary losses.
(2) running mid-term
Shot blasting machine running medium, shot blasting machine electric actuator performance from the run-in period into the adaptation period, this time the performance was more stable. The emergence of the problem is the existence of individual electronic components quality problems. Such as the position current converter TAM2, the middle contactor K1, K2, the torque of the micro switch.
(3) run late
Into the late operation, the aging of components and transmission parts wear problems began to become extremely serious, such as the aging of the motor coil caused by reduced insulation, unstable operation; motor lubrication is not good to reduce the stability of the operation; locator comparison coil aging or Position current converter aging to reduce the positioning accuracy; gear unit transmission components caused by shot blasting machine shot blasting machine can not adjust the motor and so on. For these problems, check regularly to prevent major failures. Of course, in all the fault factors, there are still the actual operation of artificial trampling, process baffle stuck, the process of misuse and other reasons.
From the actual experience of the maintenance personnel of the shot blasting machine, the maintenance of the electric actuator of the shot blasting machine should take different key maintenance measures according to its different use period. We usually do the following:
1; regular lubrication: Shot blasting machine electric actuator and motor parts need to use lubricating oil to lubricate, and the viscosity of the oil and oil temperature changes. Viscosity is too low, gears and other parts of the wear and tear increased; viscosity is too high, poor action. Therefore, regular use of lubricating oil can extend its service life.
2; improve the operating environment: In order to ensure the reliability of the electric actuator of the shot blasting machine, it must ensure that it is running in the appropriate operating environment, to avoid environmental damp and other environmental factors caused by short circuit or other faults.
3; regular inspection: regular inspection, timely detection of operational accidents, at least for the fault factor to find help to avoid detours.
4; to manage the failure of the account: the handling of each failure must do a detailed record, including the fault phenomenon, fault analysis and search process, the cause of the failure, treatment methods, preventive measures. This not only for the future to deal with similar problems to provide a reference value, but also through the fault curve to improve the level of finding fault factors, to achieve a multiplier effect.
Post time: May-09-2018