CN203175405U

CN203175405U - Rock-entering drill bit for engineering pile

Info

Publication number: CN203175405U
Application number: CN 201320172463
Authority: CN
Inventors: 阎慧奎; 常国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-09
Filing date: 2013-04-09
Publication date: 2013-09-04
Anticipated expiration: 2023-04-09

Abstract

The utility model relates to a rock-entering drill bit for an engineering pile. The drill bit comprises a down hole hammer body with small diameter, an impactor, picks, pick seats, helical blades, a rotary excavating drill bucket and movable valves, wherein the down hole hammer body and the impactor are positioned in the center of the drill bit, the pick seats are used for fixing the picks, the helical blades are adopted when the drill bit is used as a long helical drill bit, the rotary excavating drill bucket is adopted when the drill bit is used as a drill bit for a rotary excavating machine, the movable valves are connected with the picks, the down hole hammer body is welded with the helical blades, the bottom ends of the welded helical blades are welded with the steel pick seats, the pick seats are provided with the picks, the down hole hammer body is connected with a helical drill rod, the helical blades are connected with helical blades which are arranged on the helical drill rod, the down hole hammer body with the small diameter is positioned in the center of the rotary excavating drill bucket and is fixedly welded with the rotary excavating drill bucket, the bottom of the rotary excavating drill bucket is provided with the pick seats, the pick seats are fixedly connected with the down hole hammer body and the rotary excavating drill bucket at the bottom of the rotary excavating drill bucket, the pick seats are provided with the picks, the picks are connected with the movable valves, and the upper end of the down hole hammer body is connected with the rotary excavating drill rod. The drill bit has the advantage that when the drill bit is used for drilling holes in hard rock layers, the speed is high, the pollution is avoided, and the manufacturing cost is low.

Description

A kind ofly go into the rock drill bit for the engineering stake

Technical field

The invention belongs to engineering machinery field, specifically a kind ofly go into the rock drill bit for the engineering stake.

Background technology

Bored pile is the present pile foundation type more widely of using, and much all requires pile foundation to go into competent beds such as middle weathering or gentle breezeization when single pile bearing requires greatly.Construction of Engineering Pile pierces the solid rock layer and mainly contains impact opening, rotary drilling rig pore-forming, down-the-hole hammer drill machine pore-forming at present.The Churn drill pore-forming leans on gravity head that the impact of rock is smashed the rock pore-forming, and this method speed is slow, pollution is big; The rotary drilling rig pore-forming grinds the rock pore-forming by revolving the pick that digs on the drill bit, and this method efficient is than the bigger improve of Churn drill pore-forming, but speed is slow when piercing hard rock, and bit wear is serious, and the pore-forming cost is not low yet; It is fast, pollution-free that down-the-hole hammer drill machine pore-forming pierces hard rock speed, needs to advance the down-the-hole hammer that Shi Zeyong has the reaming function with pipe bit.But Large Diameter DTH Hammer hammer and have the down-the-hole hammer of reaming function to involve great expense, air compressor machine is required also higher, energy consumption is bigger, so the cost maximum.

Summary of the invention

The purpose of this invention is to provide a kind of when the competent bed pore-forming speed boring fast, pollution-free, that cost is low go into the rock drill bit.Content of the present invention is achieved in that it comprises down-the-hole hammer hammer body and the impactor of the minor diameter that is positioned at bit central, pick and be used for the fixedly pick box of pick, helical blade when being used as long spiral drilling head, revolving when being used as the Spiral digging machine drill bit are dug and are bored bucket and the valve that is connected with pick, are used for disposable pick box and pick when having the solution cavity rock stratum to advance to construct with pipe bit.When being used for doing long spiral drilling head, down-the-hole hammer hammer body and the impactor of described minor diameter be positioned at the drill bit middle position, weld helical blade at down-the-hole hammer hammer body, welding helical blade bottom welding steel pick box, be equipped with pick on the pick box, the auger stem connection of down-the-hole hammer hammer body, helical blade are connected with helical blade on the auger stem; When being used for doing the Spiral digging machine drill bit, described minor diameter down-the-hole hammer hammer body is positioned to revolve to dig and bores bucket central authorities, digs that to bore the bucket welding fixing with revolving, revolve dig bore the bucket bottom have pick box and down-the-hole hammer hammer body and and revolve to dig to bore and barrel be connected and fixed, pick is arranged on the pick box and be connected with valve, down-the-hole hammer body upper end is connected with rotary drill rod; During work, down-the-hole hammering blow device blows to the edge with following catalase and with chip, and pick is hammered down-the-hole into shape edge fully broken rock mass cutting and by helical blade or revolve to dig and bore bucket and take out of outside the hole.When needs advance with pipe bit, pick box and pick that can the installation activity on the pick box in the drill bit outside be used for reaming, described movable pick reaming is achieved in that a kind ofly goes into the rock drill bit for the engineering stake, be provided with slotted eye in its outermost pick box, movable pick box is L shaped and can inserts the interior slotted eye of outermost pick box, fluted respectively between L shaped pick box and outermost pick box, the U-shaped spring leaf is arranged in the groove of L shaped pick box, spring leaf is fixed on the L shaped pick box for one section, the U-shaped spring leaf plays the effect of fixing two shape pick boxs, during boring, the pick cutting rock mass reaming on the L shaped pick box is that the steel casing can follow up smoothly, after getting at the bottom of the hole, the steel casing is motionless, carries on the drill bit, under the resistance of steel casing, the distortion of U-shaped spring leaf, L shaped pick box drops.The present invention can be used as long spiral drilling head, also can do the rotary drilling rig drill bit.Get out large diameter borehole with minor diameter down-the-hole hammer in the rock stratum, minor diameter down-the-hole hammer cost is low, air compressor machine is required low, has realized that large diameter pile foundation goes into rock drilling efficiency height, low, the free of contamination effect of cost.

Of the present inventionly go into the advantage that the rock drill bit has now into the rock drill bit and be: go into the rock drill bit, bit central is minor diameter down-the-hole hammer, cost and maintenance cost are low with respect to the Large Diameter DTH Hammer hammer, air compressor machine are required low, therefore save the energy.With respect to drill hammer and long spiral drilling head, revolve and dig drill bit, it is faster to go into rock speed, when being used for doing long spiral drilling head, does not have a large amount of mud contaminations, therefore more environmental protection.Of the present inventionly go into the rock drill bit, need pick and the pick box of employing activity in the time of advancing with pipe bit, lower with respect to reaming down-the-hole hammer cost and maintenance cost.

Description of drawings

Fig. 1 is the structural representation when originally going into the rock drill bit for long spiral drilling head.

Fig. 2 originally goes into the structural representation of rock drill bit when being used for advancing with pipe bit.

Fig. 3 originally goes into the rock drill bit structural representation that movable pick box is connected with fixing pick box when being used for advancing with pipe bit.

Fig. 4 originally goes into the structural representation that the rock drill bit is used for the rotary drilling rig drill bit.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is described further, referring to Fig. 1-4

Originally go into the rock drill bit, comprise down-the-hole hammer hammer body 1 and the impactor 2 of minor diameter, pick 5 and be used for the fixedly pick box 4 of pick, helical blade 3 when being used as long spiral drilling head, revolving when being used as the Spiral digging machine drill bit are dug and are bored bucket 14 and the valve 13 that is connected with pick, are used for disposable pick box 6 and pick 5 when having the solution cavity rock stratum to advance to construct with pipe bit.When being used for doing long spiral drilling head, down-the-hole hammer hammer body 1 and the impactor 2 of described minor diameter be positioned at the drill bit middle position, at down-the-hole hammer hammer body 1 welding helical blade 3, helical blade 3 bottoms welding steel pick box 4, be equipped with pick 5 on the pick box 4, down-the-hole hammer hammer body 1 upper end is connected with long screw drill rod, and helical blade 3 upper ends are connected with helical blade on the long screw drill rod; When being used for doing the Spiral digging machine drill bit, described minor diameter down-the-hole hammer hammer body 1 is positioned to revolve to dig and bores bucket 14 central authorities, digs that to bore bucket 14 welding fixing with revolving, revolve to dig and bore bucket 14 bottoms and pick box 4 is arranged with down-the-hole hammer hammer body 1 and revolve to dig and bore bucket 14 and be connected and fixed, pick 5 is arranged on the pick box 4 and be connected with valve 13, down-the-hole hammer body upper end is connected with rotary drill rod.During work, down-the-hole hammering blow device 2 blows to the edge with following catalase and with chip, and pick 5 is hammered down-the-hole into shape edge fully broken rock mass cutting and by helical blade 3 or revolve to dig and bore bucket 14 and take out of outside the hole.When needs with pipe bit when advancing, pick box 6 and pick 5 that can the installation activity on the pick box 4 in the drill bit outside be used for reaming.Described movable pick reaming is achieved in that and a kind ofly is provided with slotted eye 7 for going in rock drill bit, its outermost pick box 4 of engineering stake, movable pick box 6 is for L shaped and can insert in the slotted eye 7 in the outermost pick box 4, L shaped pick box 6 and outermost pick box 4 difference fluted 9 and groove 10, in the groove 9 of L shaped pick box U-shaped spring leaf 11 is arranged, spring leaf 11 1 ends 12 are fixed on the L shaped pick box 6, and U-shaped spring leaf 11 plays the effect of fixing two pick boxs.During boring, the 5 cutting rock mass reamings of pick on the L shaped pick box 6 can be followed up steel casing 8 smoothly, get at the bottom of the hole after, steel casing 8 is motionless, carry on the drill bit, under the resistance of steel casing 8,11 distortion of U-shaped spring leaf, L shaped pick box 6 comes off.The present invention can be used as long spiral drilling head, also can do the rotary drilling rig drill bit.Get out large diameter borehole with minor diameter down-the-hole hammer in the rock stratum, minor diameter down-the-hole hammer cost maintenance cost is low, and is low to air compressor machine power quantitative requirement, oil consumption.Realized that large diameter pile foundation goes into rock drilling efficiency height, low, the free of contamination effect of cost.

Above-described embodiment is preferred embodiment of the present invention, is not to limit protection scope of the present invention successively, so: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within the protection of the present invention.

Claims

One kind be used for the engineering stake go into the rock drill bit, it is characterized in that: it comprises down-the-hole hammer hammer body and the impactor of the minor diameter that is positioned at bit central, pick and be used for the fixedly pick box of pick, the helical blade when being used as long spiral drilling head, revolving when being used as the Spiral digging machine drill bit dig and bore barrel and the valve that is connected with pick; Weld helical blade at down-the-hole hammer hammer body, welding helical blade bottom welding steel pick box is equipped with pick on the pick box, and down-the-hole hammer hammer body is connected with auger stem, helical blade is connected with helical blade on the auger stem; Described minor diameter down-the-hole hammer hammer body is positioned to revolve to dig and bores bucket central authorities, digs that to bore the bucket welding fixing with revolving, revolve to dig and bore the bucket bottom and pick box is arranged with down-the-hole hammer hammer body and revolve to dig to bore and barrel be connected and fixed, pick is arranged on the pick box and be connected with valve, down-the-hole hammer body upper end is connected with rotary drill rod.
As claimed in claim 1 a kind of for the engineering stake go into the rock drill bit, it is characterized in that: the pick box in the drill bit outside is provided with movable pick box and the pick for reaming.