Open-air coal mine blast "three links" system [Procedures] Article 528 The blasting safety alert must comply with the following provisions: (1) There must be a person in charge of the safety alert and a police officer should be dispatched around the blasting area. (2) The “three-contact system†is implemented between the person in charge of the blasting area and the alert personnel. (3) When the production is interrupted by blasting, immediately report to the mine dispatching room, and take measures to disarm. [Executive Note] "Three-contact system" refers to the three contact system between the person in charge of the blasting area and the alert personnel and the detonating personnel during the detonation operation. The first signal: the person in charge of the blasting area sends the first signal to the alert personnel to confirm that the alert personnel arrive at the alert location. All personnel unrelated to the blast are evacuated from the guard zone, the equipment is evacuated to a safe distance, and then the alert personnel are directed to the blasting area. Sending a safety signal, the person in charge of the blasting area orders the detonator to prepare for detonation; The second signal: After the initiation of the detonation is completed, the person in charge of the blasting area sends a second signal to the alert personnel, and after obtaining the safety signal sent back by the alert personnel, the detonating command is issued to the detonating person to initiate the detonation; The third signal: 5 minutes after the detonation, when it is confirmed that there is no danger, the person in charge of the blasting area and the detonator enter the explosion area for inspection. After no problem, the warning signal is sent to the security personnel. Categories Pneumatic Cylinder Kits,Air Cylinder Kits,Pneumatic Air Cylinder Kits,Aluminum Cylinder Kits Foshan Weiyingjia Technology Co., Ltd , https://www.wyspneumatic.com
Cylinder assembly accessories include one front cover and one rear cover, one piston, two Y-type piston seals, one hard-wearing ring, one set of magnetic rings (some cylinders do not have magnetic rings), two cylinder seal O-rings, one piston rod sealing ring, one dustproof, two buffer caps, two buffer screws (with O-ring), one piston rod end thread, one piston fixing bolt, 8 fixing bolts, dustproof air inlet and outlet two caps, one piston rod end thread protection cover.Air Cylinder Tube.
Because the different application needs different strokes of air cylinders, for dealers and distributors, storing a large number of cylinders with fixed strokes will occupy a large amount of inventory funds.Pneumatic Cylinder Tube.
However, storing the Pneumatic Cylinder assembly parts can solve this problem very well. When requires different strokes and then temporarily assembling the cylinder accordingly.Air Cylinder Barrel.
Common cylinder assembly parts include DNC square cylinder series, ISO standard Metalwork series, SI Mickey Mouse type ISO 15552 cylinder series, SC and SU AirTac standard cylinder series, SDA compact cylinder series, and DSN, MA, MAL mini air cylinder series, etc. .
Matters needing attention when assembling the cylinder
For non-professional cylinder manufacturers, we do not recommend self-assembly to avoid problems caused by incorrectly assembling cylinders.
The following points need to be paid attention to when assembling an air cylinder by yourself:
â—† The inner edge of a pneumatic cylinder needs to be chamfered to facilitate the entry of the piston and sealing ring into the cylinder tube.
â—† Before assembling the piston and cylinder, lubricating grease must be applied to the inner wall of the cylinder to reduce the friction between the sealing ring and the inner wall of the air cylinder.Pneumatic Cylinder Barrel.
â—† The edge of the piston rod end also needs to be chamfered to reduce damage to dust and buffer seals.Pneumatic Cylinder.
â—† Because the end of the piston rod has external threads, special attention should be paid when assembling the piston rod and the front end cover. It is necessary to use the end of the piston rod without threads to pass through the gasket. Otherwise, the inner wall of the gasket is easily cut by the threads and resulting in an air leakage.
â—† For the installation of the tie rod cylinder, it is also necessary to pay attention to the position of the tie rod thread, so that there is enough thread space in the fixing bolts of the front and rear end covers to install the cylinder accessories such as CA, CB mounting brackets, FA/FB flange brackets.Cylinder Tube.
Cylinder assembly accessories refer to all cylinder assembly parts except the piston rod, cylinder tube and tie rods (some cylinders do not have tie rods).