SU36371A1 - Electric jackhammer - Google Patents

Description

The time-consuming coal-cutting process in the coal industry is still produced either by energy: compressed air with pneumatic hammers, or manually by Kayla. Manual work is not very productive and heavy, work with the energy of compressed air, although I do not have these disadvantages, but the cost of obtaining compressed air, spirit, first-time costs and operating costs significantly increase the cost of coal production. The use of cheap and universal sjfaktichesky energy in the coal coal mine is extremely economical and convenient. In the matter of designing an electric pick hammer, both the world and the other countries, as well as individuals and institutions, work This issue is relevant and global in nature.

Already known are electric hammers with mechanical gears for converting rotary motion into reciprocating, also hammerhead hammers, where the striker strikes

due to the reaction of the compressed spring. In the proposed electric jackhammer, an electromagnet is used to hold the springs bounded inside and outside of the cylinder provided with a die and a bark.

In FIG. 1 is a front view of a hammer; FIG. 2 - vertical section of it. /

An asynchronous motor 5 (FIG. T) of a three-phase current through a bevel gear 8 rotates the crankshaft 9. On the latter, there is a connecting rod 10 hinged to the piston 11 moving in the cylinder 6. At one end of the cylinder there is a striker 1, and at the other end Measles 7 electromagnet 12 three-phase current. Outside the cylinder there is a spring 3, and inside there is a spring 4.

When the crankshaft 9 goes from the lower dead position to the upper one, the movement of the shaft through the connecting rod 10 n piston 11 passes to the cylinder 6, which will rise up and compress the outer spring 3. As the shaft approaches the upper dead position, at this time the measles 7 an attachment with an electromagnet 12 and it will be der