Energy-saving bundled combined hammer

Abstract

The invention provides an energy-saving bundled combined hammer which comprises a square connecting head, a main air inlet pipe, an air inlet chamber, an air dividing pipe, a main exhaust pipe, an exhaust chamber, connectors, an exhaust pipe branch, a barrel and an impactor. The square connecting head, the air inlet chamber, the exhaust chamber and the barrel are sequentially fixed from top to bottom. The connectors are arranged at the top of the barrel and the side face of the exhaust chamber, and the impactor is mounted at the bottom of the barrel. The square connecting head is communicated with the air inlet chamber through the main air inlet pipe, the air inlet chamber is communicated with the connectors through the air dividing pipe, and the connectors are communicated with the impactor. The impactor is further communicated with the exhaust chamber through the exhaust pipe branch, and the main exhaust pipe is arranged on the exhaust chamber. Blast consumption is reduced, and under the same condition, at least two fifths of blast volume is saved. The pore forming efficiency is high, pore bottom back pressure is small, and therefore the problem that due to too large treatment back pressure, work efficiency is low is avoided. Comprehensive cost is low, and the manual labor intensity is lowered.

Description

technical field [0001] The invention relates to an energy-saving bundled combined hammer, which belongs to the technical field of drilling engineering. Background technique [0002] In some pile foundation hard rock hole-forming projects, the common forming method is rotary drilling. The efficiency of rotary drilling for hole formation is unparalleled for soil, soft rock and overburden, but in hard rock formation, its efficiency is very low, and the drilling tool wears a lot, and the comprehensive construction cost is high. With the continuous development of drilling engineering, the use of the high efficiency of pneumatic DTH hammer to impact holes to achieve hard rock crushing has been widely used in exploration, hydrology and other industries. However, in some large-diameter pile foundation projects, the construction of large-diameter impactors or bundled combined hammers is still in a relatively early stage of development in China. The main reason is that the required a...

AI Technical Summary

Problems solved by technology

However, in some large-diameter pile foundation projects, the construction of large-diameter impactors or bundled combined hammers is still in a relatively early stage of development in China. The main reason is that the required air consumption is too large and the overall cost is too high , the construction boss finds it hard to accept

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