Solution For Air Shaft Maintenance And Abnormal Operation Test

The air expansion shaft and the air expansion sleeve are extremely convenient and quick to use. Only the self-prepared air source is needed. The air pressure is controlled within the range of 6-8kg/cm2. When the external components (such as a round paper tube) need to be locked, as long as the air is inflated. The handle can be completed by inflating the air nozzle on the inflation shaft, and the key bar will protrude against the external component (such as a circular paper tube). When the air shaft is to be repaired, the paper tube is unloaded, and the air is pressed by hand. The sliding air core on the mouth is deflated, the key strip will return to its original appearance, and the external parts (such as a round paper tube) can be taken out.

1. Neat: tools, workpieces, and accessories are placed neatly; safety protection devices are complete; line piping is complete.

2. Cleaning: Clean inside and outside the equipment; all sliding surfaces and screws, gears, racks, etc. are free of oil and no bumps; all departments do not leak oil, no air leakage, no leakage; the garbage is cleaned.

3. Lubrication: Oil on time, oil quality, oil quality meets requirements; oil pot, oil gun, oil cup, linoleum, oil line are clean and complete, oil mark is bright, oil circuit is smooth.

4. Safety: Analysis of the air-expansion shaft maintenance factory, implementation of the fixed-machine setting and handover system; familiar with the equipment structure and compliance with operational procedures, rational use of equipment, careful maintenance of equipment, to prevent accidents.


The purpose of the abnormal operation test is to improve system reliability and avoid undue accidents as much as possible. The abnormal operation test can be carried out as follows:

1. External sudden power failure experiment. When the device is operated manually or automatically, no matter under any circumstances, the sudden power-off of the external can be reliably stopped, and the device can be restored to normal operation by the specified operation steps.

2. Emergency breaking test. When the device is running manually or automatically, no matter what the circumstances, for emergency disconnection operation (such as pressing the emergency stop button on the control panel), the device can be reliably stopped and the normal operation can be resumed through the specified operation steps. .

3. Detect switch failure test. Consideration should be given to the possibility of system detection switch failure, especially for components that are prone to collision, interference, and safety of mechanical components, and abnormal tests should be performed on signals such as end-of-stroke detection. It must be ensured that even if a certain detection switch is defective or damaged, it still does not. A safety incident will occur.

4. Perform no residual bad tests. Consideration should be given to the possibility of system failure, especially for actuators that are prone to mechanical collisions, interference, and safety. The abnormality test should be carried out, and it must be ensured that even if a certain actuator is defective or damaged, it will not occur. Security incident.

5. Protection circuit action test. The possibility of the protection circuit of the system should be considered. Especially for protection devices such as circuit breakers and automatic switches, it should be tested abnormally. It must be ensured that the device can be reliably stopped when the protection device is operated, and the specified operation steps can be used. Resume normal work.