BakParts: Hammer use and maintenance (a)

2016年6月25日星期六

Hammer use and maintenance (a)

Hammer is the use of special mechanical means of rotation of the motor into a rotational movement with a bit of shock. At present domestic and foreign production and use of hammer, basically electroporation air cushion principle, the use of the relative movement of the piston and the cylinder, continue to compress and release the gas (using a pressure difference) push the hammer blow drill, complete the drilling operation of the inner hammer motor rotary motion into reciprocating motion, mainly through the crank linkage to achieve.

At home and abroad Hammer specifications 22ram 22 and above, most of the use of Crank relatively large size of the institution, its internal usually also has a pair of bevel gears, but the agency is also relatively large transmission torque. The pendulum bodies are smaller and more compact structure, but used for transmitting torque smaller hammer 22mm or less. Hammer is mainly used to drill and 22mm the following 22 foreign hammer can also be metal and wood holes in concrete masonry and other materials, some of the small size of the hammer can also be used as a screwdriver when breaking concrete or rock, now there are two theories: one is to use a larger impact energy smaller impact frequency; another with a smaller impact energy, the larger impact frequency.

Practice has proved that the two theories can play the role of broken concrete and rock, but must meet the minimum impact energy, impact energy is too small if you can not get the normal drilling efficiency.

We had a hammer impact mechanism and drilling parameters on the impact energy efficiency and the impact hammer drill matching speed and impact frequency for drilling efficiency of two research topics, get the best from a large number of tests and calculations many manufacturers also value this hammer been studied, and therefore should not be adjusted during maintenance.