Pneumatic pavement breaker is a tool to transfer impact energy, directly contact with rock and blast. The pneumatic road crusher is very complex during the entire operation, so it has high requirements for the material and shape of the drill bit. When using the eccentric drill bit, you must grasp the technical essentials. The selected drilling parameters should be based on the principle of low speed, low feed pressure, and high return air speed. During the construction operation of the pneumatic road crusher, it should be based on the rock Factors such as hardness, looseness, and water content control the drilling speed. When drilling encounters particularly loose or large fractured formations, the feed rate and pressure should be reduced, and the slag discharge and hole cleaning should be repeated.
Pneumatic pavement breaker should also pay attention to the following aspects in the specific construction operation:
1. Check whether the down-hole impactor, tube drill, casing and casing shoe are firmly connected, whether the eccentric drill rotates flexibly, and whether the ventilation is smooth before drilling the hole of the
pneumatic pavement breaker.
2. During the drilling process of the
pneumatic pavement breaker, pay attention to observe the follow-up of the casing and the powder discharge in the hole. Every 0.3-0.4 meters of drilling should be forced to blow out the powder to keep the hole clean. When blowing holes, the upward lifting distance of the center drilling tool should be strictly controlled to achieve the powerful blow hole powder discharge, and it is forbidden to strongly pull the center drilling tool during the drilling process.
3. When the drilling of the
pneumatic pavement breaker is completed or the center drilling tool needs to be replaced, the hole should be cleaned first, the residue at the bottom of the hole is blown out, and then the rotation is stopped, the center drilling tool is slowly lifted upward, and the lifting force is just right It is appropriate to be able to lift the center drilling tool, and raise the height until the back of the eccentric bit contacts the front end of the casing shoe; then reverse the drilling tool at a low speed while slowly lifting the center drilling tool upwards. When it is observed that the center drilling tool can be lifted smoothly, it indicates that the eccentric drill bit has been gathered. At this time, the center drilling tool can be lifted according to the conventional method until all the center drilling tools are raised. When reversing the drill, care should be taken to prevent the drill from tripping.
