Multi-stage connection telescopic automatic locking rod pressurization device for drilling rod of rotary excavator

Abstract

The invention relates to the technical field of rotary drilling machine drill rods, in particularly to a multistage connection and expansion automatic lock rod pressure device for rotary drilling machine drill rods. The device comprises a first motor, a second motor, a large arm, a pulley glidingly connected with the large arm, an outer barrel connected with the pulley, and an inner barrel sleeved with the interior of the outer barrel, wherein after the inner barrel extends out the outer barrel, the inner and outer barrels are locked through the device; the outer barrel is connected with a rotary power head; the outer barrel can longitudinally move in the rotary power head; the pulley is connected with the second motor through a chain; an inner barrel limiting device is fixedly arranged in the inner barrel; the first motor is connected with the inner barrel limiting device through a steel wire rope; an inner buckle is also arranged in the inner barrel; a first through hole corresponding to the inner buckle is formed in the inner barrel; a second through hole matched with the first through hole is also formed in the outer barrel; at least one hanging hook is also arranged on the outer wall of the bottom of the outer barrel; at least one groove matched with the hook part of the hanging hook is formed in the outer wall of the inner barrel; the hanging hook is fixed on the wall of the outer barrel through an extension spring. The device has a simple structure, is convenient to operate, and improves the operating efficiency of rotary drilling machines.

Description

technical field [0001] The invention relates to the technical field of rotary excavator drill rods, in particular to a multi-stage connection telescopic automatic locking rod pressurizing device for rotary excavator drill rods. Background technique [0002] Rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation engineering. It is mainly suitable for the construction of sandy soil, cohesive soil, silty soil and other soil layers, and is widely used in various foundation constructions such as cast-in-place piles, diaphragm walls, and foundation reinforcement. In order to achieve a deeper drilling depth, the current drill pipe adopts a multi-stage telescopic structure. Multi-stage telescopic rods are divided into two types: pressurized telescopic rods and non-pressurized telescopic rods. The non-pressurized drill pipe feeds downwards by its own gravity, and has major defects: the self-weight of the drill bit is insufficient, ...

AI Technical Summary

Problems solved by technology

The non-pressurized drill pipe feeds downwards by its own gravity, and there are major defects: the self-weight of the drill bit is insufficient, and if it encounters hard soil, the downward pressure is insufficient; the drill cannot be fed by spinning in situ

The current pressurized telescopic drill pipe has a complex structure, requires high processing equipment, complex process, low efficiency, and the multi-level connection operation of the drill pipe is inconvenient and requires multiple actions to complete. It is only used in large-scale machines and larger enterprises.

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