CN103758450A - Self-drilling anchor rod boring device capable of reaming at the same time - Google Patents

Abstract

The invention discloses a self-drilling anchor rod boring device capable of reaming at the same time. The self-drilling anchor rod boring device comprises a drill bit, a twisting drill rod, a variable frequency motor and a high-pressure air pump. One end of the twisting drill rod is tightly connected with the drill bit through a thread, the other end of the twisting drill is connected with the variable frequency motor through swivel bolt, a fixed handle is disposed on the variable frequency motor, a central through hole is axially formed in the twisting drill rod, one end of the central through hole is connected with the high-pressure air pump through a hose, and the other end of the central through hole is connected with the drill bit; a telescopic sharpener is vertically arranged at the bottom of the drill bit, and a spring piece is disposed at the bottom of the sharpener. High-pressure gas is inflated into the drill pit through the central through hole by the aid of the high-pressure air pump, and the sharpener extending out of the drill bit enlarges the hole with rotation of the drill bit and is withdrawn by spring force after exhausting of the high-pressure gas; drilling and reaming of the hole can be completed during drilling, and the reaming position is mainly used for increasing resistance and clamping an anchor head after grouting of the anchor rod. The self-drilling anchor rod boring device is simple in operation, high in flexibility and suitable for on-site rapid operation.

Description

A kind of certainly creeping into can be with expanding anchor pole hole-forming device

Technical field

The present invention relates to a kind of certainly creeping into can be with expanding anchor pole hole-forming device.

Background technology

At present, for bolt anchorage rock-soil layer pore-forming, mainly adopt air rock drill pore-forming or electric coal drill pore-forming.Air rock drill utilizes Pneumatic immpacting effect by crushing rock formation, and utilizes gases at high pressure air blast effect that rock stratum chip is blown out to hole; Electric coal drill boring is applicable to solve soil property stratum and meets in water softening problem and soil property stratum not easy-to-discharge slag problem of hammer drill Churn drill, and in soil property class stratum, speed of fulfiling hole is very fast.Hole-forming device in above two kinds of bolt anchorage rock-soil layers, all existent defect is: the one, pore-forming aperture is single, cannot realize reaming in pore forming process; The 2nd, the fixing difficulty of anchor pole head, after skyhook pallet, only has anchor pole end stressed after slip casting, and bar structure and hole wall country rock, substantially without active force, have lost anchorage effect.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of certainly creeping into can be with expanding anchor pole hole-forming device.

Of the present invention certainly creeping into can comprise with expanding anchor pole hole-forming device: drill bit, twist drill rods, variable-frequency motor and high-pressure pump, twist drill rods one end is connected by screw threads for fastening with drill bit, the twist drill rods other end is connected with variable-frequency motor by swivel bolt, fixed handle is installed on variable-frequency motor, in described twist drill rods, be axially arranged with central through hole, central through hole one end is connected with high-pressure pump by sebific duct, and the other end is connected with drill bit; Described drill bit bottom is provided with telescopic sharpener with drill bit vertical direction, and sharpener bottom is provided with spring leaf.

Preferably, described drill bit is used at the bottom of airtight steel airtight, at the bottom of airtight steel and between twist drill rods, is equipped with rubber seal.

Preferably, sealing-plug sealing is used in the described twist drill rods aperture with central through hole and sebific duct junction.

After the present invention switches on power, drill bit fast rotational kata-rocks soil layer, broken cutting by twist drill rods taken boring voluntarily out of, utilize high-pressure pump in drill bit, to be filled with high pressure gas by central through hole, sharpener stretches out drill bit, and with bit expanded hole, after high pressure gas removal, sharpener is regained by spring force, in boring procedure, can complete with holing with expanded hole, reaming position is mainly used in increasing resistance and blocking anchor head effect after bolt grouting.

The present invention utilizes rotary drilling-head kata-rocks soil layer pore-forming, sharpener to stretch out the broken hole wall reaming of drill bit, use twist drill rods rotation by Completion of Drilling Hole and reaming is broken cuts in band portals, be applicable to rock matter and soil property stratum fast drilling, efficiently solve rock-soil layer and meet water softening problem.This device creeps into and forms compound aperture, in whole hole, with groove, as anchor head draw-in groove, makes anchor pole total length stressed and increase frictional resistance after slip casting, improves anchoring effect.

Accompanying drawing explanation

Fig. 1 can be with expanding anchor pole hole-forming device structural representation for certainly creeping into;

Fig. 2 is drill bit structure schematic diagram.

The specific embodiment

As shown in Figure 1, the present invention includes: drill bit 2, twist drill rods 7, variable-frequency motor 10 and high-pressure pump 11, twist drill rods 7 one end are connected by screw threads for fastening with drill bit 2, twist drill rods 7 other ends are connected with variable-frequency motor 10 by swivel bolt 9, fixed handle 13 is installed on variable-frequency motor 10, in twist drill rods 7, be axially arranged with central throughhole 6, central throughhole 6 one end are connected with high-pressure pump 11 by sebific duct, and the other end is connected with drill bit 2.

Drill bit 2 bottoms and drill bit 2 vertical direction are provided with telescopic sharpener 4, and sharpener 4 bottoms are provided with spring leaf.

During work, drill bit 2 fast rotational kata-rocks soil layers 1, chip is taken boring out of voluntarily by twist drill rods 7, high-pressure pump 11 is filled with high pressure gas by central throughhole 6 in drill bit 2, make sharpener 4 stretch out drill bit 2, along with drill bit 2 rotations expand boring, after high pressure gas removal, sharpener 4 is retracted by spring leaf.

Like this, the size in capable of controlling drilling hole in boring procedure, its Main Function is after bolt grouting, increase resistance and block anchor head effect.

It is 3 airtight that drill bit 2 bottoms are used at the bottom of airtight steel, at the bottom of airtight steel 3 and twist drill rods 7 between be equipped with rubber seal 5, prevent that drill bit 2 and twist drill rods 7 from causing damage because high speed rotating produces friction when work.

Sealing-plug 8 sealings are used in twist drill rods 7 apertures and sebific duct junction with central throughhole 6, prevent the junction gas leakage of sebific duct and central throughhole 6, cause work to produce deviation.

Can be with being drilled to hole with reaming with expanding anchor pole hole-forming device from creeping into, the groove that reaming forms has two aspect functions: the one, after slip casting, increase the frictional resistance between anchor bar body and rock-soil layer, improve anchorage effect; The 2nd, groove, can be fixing to expansion anchor head clamping as anchor pole head draw-in groove.After this device Completion of Drilling Hole and reaming, be more convenient for anchor pole head and fix, make anchor pole total length stressed and increase frictional resistance, improve anchoring effect.

After the present invention switches on power, drill bit 2 fast rotational kata-rocks soil layers 1, broken cutting by twist drill rods 7 taken boring voluntarily out of, utilize high-pressure pump 11 in drill bit 2, to be filled with high pressure gas by central throughhole 6, sharpener 4 stretches out drill bit 2, and with drill bit 2 rotation expanded holes, after high pressure gas removal, sharpener 4 is regained by spring force, in boring procedure, can complete with holing with expanded hole, reaming position is mainly used in increasing resistance and blocking anchor head effect after bolt grouting.Simple to operate like this, flexibility is strong, is applicable to on-the-spot sharp work.

Claims (3)

1. One kind can be with expanding anchor pole hole-forming device from creeping into, it is characterized in that, comprise: drill bit, twist drill rods, variable-frequency motor and high-pressure pump, twist drill rods one end is connected by screw threads for fastening with drill bit, the twist drill rods other end is connected with variable-frequency motor by swivel bolt, and fixed handle is installed on variable-frequency motor, in described twist drill rods, is axially arranged with central through hole, central through hole one end is connected with high-pressure pump by sebific duct, and the other end is connected with drill bit; Described drill bit bottom is provided with telescopic sharpener with drill bit vertical direction, and sharpener bottom is provided with spring leaf.
2. 2. according to claim 1ly from creeping into, can, with expanding anchor pole hole-forming device, it is characterized in that: described drill bit is airtight at the bottom of using airtight steel, at the bottom of airtight steel and between twist drill rods, is equipped with rubber seal.
3. 3. according to claim 1 certainly creeping into can, with expanding anchor pole hole-forming device, is characterized in that: sealing-plug sealing is used in the described twist drill rods aperture with central through hole and sebific duct junction.

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