Electromechanical rechargeable perforator
This type of tools is made mobile, and for that reason - the movement of the cartridge is known to be reciprocating, and if it is performed thanks to the electromagnetic coil mounted on the striker, it passes almost without friction. As a consequence, the energy required for this movement is small, however, the performance is also adequate. Batteries are used different: lithium-ion, nickel-cadmium and, finally, nickel-metal hydride.
How long it takes to charge the battery depends on many parameters, and not least on its condition. Also plays the role of the material in which the perforation, the depth of the holes and, correspondingly, their diameter. On average, the excavations in concrete depth of 10 centimeters with the installed drill section of 12 millimeters takes about 8.5 seconds .With a new battery of such holes, you can make about 100, which means that the total operating time at maximum load( continuous operation) is about 15 minutes.
Cumulative puncher, which is undesirable to confuse with the battery
Sounds like it seems, however, the principle of this perforation is completely different, based on explosive charges, installed in special cases or metal strips. Such perforators are used to open oil or gas bearing strata in the depth of wells, for more active and efficient development of natural resources. The only thing in which there is a similarity with the battery - for the detonation of charges is used electrical impulse.
This kind of equipment is not used for construction work for the simple reason that even a microscopic explosion inside a concrete slab or brickwork can not be controlled, which means the consequences are completely unpredictable. Moreover, for the laying of the hull or tape of a cumulative perforator, a deep hole must be drilled, with which an ordinary metal drill will cope.
Advantages and disadvantages of
self-contained perforators The main advantage, which is understandable and without superfluous words, is, of course, independence from the power supply, the absence of which does not allow the use of powerful network punchers. For the sake of this factor, you can slightly sacrifice power.
The reverse side of the coin - if you can not recharge the battery, you have to spend a lot of money on it, and for a long time it does not suffice, for a maximum of 3 hours with the most measured and unhurried work. Everything depends on the number of holes, if you want to make 30-40, then the battery capacity will still not completely emptied.
The accumulator of a perforator charges a little more than half an hour, the optimum break in work when there is a nearby source of electricity.
Another number of disadvantages - increased noise support for perforations and a fair amount of weight. Unfortunately, the electromechanical principle of operation does not do without much noise, while the pneumatic perforators( only the network ones due to the increased friction of the knots) act much quieter.
The weight of the tool is increased due to a battery whose capacity sometimes reaches 108 W / h, which affects the dimensions and, accordingly, the mass of the battery filling. Unfortunately, the drawbacks of the instrument in question are greater than the merits, and its only advantage is autonomy.
