CN205778537U - Advanced guide type down-hole hammer way-type drilling unit - Google Patents

Advanced guide type down-hole hammer way-type drilling unit Download PDF

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Publication number
CN205778537U
CN205778537U CN201620738076.9U CN201620738076U CN205778537U CN 205778537 U CN205778537 U CN 205778537U CN 201620738076 U CN201620738076 U CN 201620738076U CN 205778537 U CN205778537 U CN 205778537U
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drill bit
hole
hammer
frequency
advanced
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吴跃钢
徐菁
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吴跃钢
徐菁
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Abstract

This utility model belongs to construction machine field, specifically a kind of advanced guide type down-hole hammer way-type drilling unit, including interconnective high-strength drill pipe and high frequency down-the-hole air hammer, the end of high frequency down-the-hole air hammer is provided with drill bit, described drill bit is shower nozzle shape, there is at the axis of its head end the advanced end that at least one-level is protruding, rear stage is held at the end face axis that previous stage is held in advance protruding in advance, the end face of the head end of drill bit and advanced end is all distributed multiple post tooth, the side of drill bit is distributed multiple heel teeths, the afterbody of drill bit is sheathed on the end of high frequency down-the-hole air hammer, and the end of the afterbody of drill bit and high frequency down-the-hole air hammer is that spline connects, the inside of drill bit is communicated with the gas circuit of multiple steam vents at its afterbody air inlet and its head end, the afterbody air inlet of drill bit connects with the nozzle of high frequency down-the-hole air hammer.Having the beneficial effects that: rate of penetration is fast, efficiency of construction is high, and boring direction precision is guaranteed, quality project, and cost is relatively low.

Description

Advanced guide type down-hole hammer way-type drilling unit
Technical field
This utility model belongs to construction machine field, and specifically a kind of Geotechnical Engineering, ground or foundation engineering are special Advanced guide type down-hole hammer way-type drilling unit.
Background technology
The construction of existing down-hole hammer easily produces stake holes and tilts and the quality accident of bending, is running into weak bad ground Time, constructional difficulties, collapse hole, undergauge, broken pile etc. often occur, difficult quality controls.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, it is provided that a kind of advanced guide type down-hole hammer way-type drilling unit, its Rate of penetration is fast, and efficiency of construction is high, and boring direction precision is guaranteed, quality project, and cost is relatively low.
For realizing above-mentioned technical purpose, the scheme that this utility model provides is: a kind of advanced guide type down-hole hammer combination drill Tool, including interconnective high-strength drill pipe and high frequency down-the-hole air hammer, the end of high frequency down-the-hole air hammer is provided with drill bit, described Drill bit is shower nozzle shape, has the advanced end that at least one-level is protruding at the axis of its head end, and rear stage is held in advance front Projection at the end face axis that one-level is held in advance, the end face of the head end of drill bit and advanced end is all distributed multiple post tooth, drill bit Side is distributed multiple heel teeths, and the afterbody of drill bit is sheathed on the end of high frequency down-the-hole air hammer, and the afterbody of drill bit and high frequency down-the-hole The end of impacter is that spline connects, and the inside of drill bit is communicated with multiple steam vents at its afterbody air inlet and its head end Gas circuit, the afterbody air inlet of drill bit connects with the nozzle of high frequency down-the-hole air hammer.
And, the first order of described drill bit head surpasses 1/2 that point diameter is not more than the maximum gauge of drill bit head end face, Rear stage surpasses point diameter and is not more than previous stage and holds the 1/2 of maximum gauge in advance.
And, described drill bit head is diametrically divided into bit central for the center of circle holds center, interior ring region, outer in advance Ring region these three Bu Chi district, advanced end center is the end face of advanced end, and interior ring region is maximum to 3/5 drill bit from super front end external diameter The region of diameter, outer zone be within the external diameter of ring region to the region of drill bit maximum gauge.
And, described post odontoid uses circular, taper or cone, and tooth pitch is S, and post tooth diameter is d, meets S=2d.
And, the facet of described post tooth uses circular arc capitiform, flat-headed or both combined shaped.
And, under hard rock working environment, post tooth diameter is not less than 18mm, length not less than 25mm, and heel teeth diameter is not less than 20mm, length are not less than 27mm;Under middle hard rock and soft rock working environment, post tooth diameter is not less than 25mm not less than 16mm, length, Heel teeth diameter is not less than 27mm not less than 18mm, length.
And, the internal spline of described drill bit afterbody is 4 ~ 30 keys, and the steam vent of drill bit head is 3 ~ 30, steam vent diameter It is 5 ~ 50mm.
And, described drilling rod is monolayer or double-deck straight rod-shaped pipe, and inner chamber is through single hole groove or diplopore groove, joint length Being 200 ~ 20000mm, drill pipe diameter is 20mm ~ 2000mm, and thickness is 5 ~ 800mm, outer cross sectional shape is rounded, rectangle, six sides Shape, from all directions shape, key-way shape or spiral type.
And, described high frequency down-the-hole air hammer includes top connection, sealing ring, non-return valve, spring, combination mat, air inlet seat, outer Cylinder, inner casing, nozzle, piston, spacer, fairlead, spline housing and round key, the joint length of high frequency down-the-hole air hammer is 500 ~ 5000mm, high frequency down-the-hole air hammer external diameter is 70 ~ 2000mm, and outer cross sectional shape is rounded;Spiral shell is used between top connection and drilling rod Stricture of vagina connects, the trapezoidal shape of screw thread, rectangular-shaped, triangle or pipe screw-like.
The beneficial effects of the utility model are: rate of penetration is fast, and efficiency of construction is high, and boring direction precision is guaranteed, Quality project, cost is relatively low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of drill bit.
Fig. 3 is the head end structural representation of drill bit.
Fig. 4 is the structural representation of high frequency down-the-hole air hammer.
Wherein, 1, rig, 2, high-strength drill pipe, 3, high frequency down-the-hole air hammer, 4, drill bit, 5, air accumulator, 6, air compressor machine, 7, Advanced end, 8, post tooth, 9, heel teeth, 10, spline, 11, air inlet, 12, steam vent, 13, top connection, 14, sealing ring, 15, check Valve, 16, spring, 17, combination mat, 18, air inlet seat, 19, outer shell, 20, inner casing, 21, nozzle, 22, piston, 23, spacer, 24, lead To set, 25, spline housing, 26, round key.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
The present embodiment provides a kind of advanced guide type down-hole hammer way-type drilling unit, as it is shown in figure 1, include interconnective high-strength Degree drilling rod 2 and high frequency down-the-hole air hammer 3, the end of high frequency down-the-hole air hammer 3 is provided with drill bit 4.
Described drill bit 4, in shower nozzle shape, has the advanced end 7 that at least one-level is protruding at the axis of its head end, after One-level is held at the end face axis that previous stage is held in advance protruding in advance.The present embodiment citing is to have the brill that one-level is held in advance Head, as shown in Figures 2 and 3, it is also possible to according to the diameter of boring in actual production, in particular for larger-diameter brill Hole, adaptability increases the progression of advanced end, to meet required precision.
The end face of the head end of drill bit 4 and advanced end 7 is all distributed multiple post tooth 8, and the side of drill bit 4 is distributed multiple heel teeths 9, the afterbody of drill bit 4 is sheathed on the end of high frequency down-the-hole air hammer 3, and the afterbody of drill bit 4 and the end of high frequency down-the-hole air hammer 3 Being that spline 10 connects, the inside of drill bit 4 is communicated with the gas of multiple steam vents 12 at its afterbody air inlet 11 and its head end Road, the afterbody air inlet 11 of drill bit 4 connects with the nozzle 21 of high frequency down-the-hole air hammer 3.
Drill bit 4 can use superior alloy steel and tungsten carbide atom post tooth 8 material, and drill bit 4 body uses 35CrMo high duty alloy Steel material, hard wear resistant.
Further, the first order of described drill bit 4 head holds 7 diameters to be not more than the maximum straight of drill bit 4 head end in advance The 1/2 of footpath, rear stage surpasses point diameter and is not more than previous stage and holds the 1/2 of maximum gauge in advance.Such as, drill bit 4 main body maximum portion Position diameter D=100 ~ 2000mm, the first order holds 7 diameter Dn=50 ~ 1000mm, splined shaft diameter D1=50 ~ 800mm in advance.
Further, in order to make drill bit 4 end face all posts tooth 8 reach uniform wear, and be conducive to orienting and creep into steadily, Drill bit 4 head end is diametrically divided into drill bit 4 center for the center of circle hold in advance center, interior ring region, outer zone this three Ge Buchi district, advanced end center is the end face of advanced end, interior ring region from super front end external diameter to 3/5 drill bit 4 maximum gauge Region, outer zone be within the external diameter of ring region to the region of drill bit 4 maximum gauge.
Further, post tooth 8 shape of described drill bit 4 uses circular, taper or cone, and tooth pitch is S, post tooth 8 diameter For d, meet S=2d.Can prevent heel teeth 9 avalanche, beneficially gauge, increase drill bit 4 service life.Post tooth 8 is to use machinery to press solidly Technique is embedded in the perforation of drill bit 4 body and has manufactured.
Further, the facet of described post tooth 8 uses circular arc capitiform, flat-headed or both combined shaped.
Further, the specification of post tooth 8 can be determined according to rock soft or hard and high frequency down-the-hole air hammer 3 single strike work.Firmly Under rock working environment, post tooth 8 diameter is not less than 18mm, length not less than 25mm, and heel teeth 9 diameter is the least not less than 20mm, length In 27mm;Under middle hard rock and soft rock working environment, post tooth 8 diameter is not less than 16mm, length not less than 25mm, and heel teeth 9 diameter is not Less than 18mm, length not less than 27mm.
Further, the internal spline 10 of described drill bit 4 afterbody is 4 ~ 30 keys, and the steam vent 12 of drill bit 4 head is 3 ~ 30, A diameter of 5 ~ the 50mm of steam vent 12.
Further, described drilling rod is monolayer or double-deck straight rod-shaped pipe, and inner chamber is through single hole groove or diplopore groove, single A length of 200 ~ 20000mm, drill pipe diameter is 20mm ~ 2000mm, and thickness is 5 ~ 800mm, outer cross sectional shape is rounded, rectangle, Hexagon, from all directions shape, key-way shape or spiral type.
Further, as shown in Figure 4, described high frequency down-the-hole air hammer 3 include top connection 13, sealing ring 14, non-return valve 15, Spring 16, combination mat 17, air inlet seat 18, outer shell 19, inner casing 20, nozzle 21, piston 22, spacer 23, fairlead 24, spline housing 25 With round key 26, the joint length of high frequency down-the-hole air hammer 3 is 500 ~ 5000mm, high frequency down-the-hole air hammer 3 external diameter is 70 ~ 2000mm, outer cross sectional shape is rounded;Spiral marking connection, the trapezoidal shape of screw thread, rectangle is used between top connection 13 and drilling rod Shape, triangle or pipe screw-like.
The operation principle of this programme is as follows: compressed gas therefrom outage strength drill pipe 2 through top connection 13, non-return valve enter into The cavity of resorption of gas seat, then compressed gas is divided into two-way: a road enters piston and drill bit 4 through central duct and the orifice plug of air inlet seat Central duct to cooling down drill bit 4 at the bottom of hole and removing rock dust;Another road gas enters the annular chamber between outer shell and inner casing, this chamber As the inlet plenum of piston movement, promote piston up-down.The compressed gas of inlet plenum, the radial hole on inner casing and work When annular gas tank beyond the Great Wall enters lower cylinder, piston starts return and moves upward, and when moving closedown air inlet gas circuit on piston, piston leans on Gas expansion runs, and when cylinder communicates with steam vent 12 tunnel instantly, piston runs by inertia, and high frequency down-the-hole air hammer 3 return includes Air inlet, compressed air expand, piston inertia slides three phases.In like manner, piston is in stroke procedure, and first gas is on piston Annular gas tank enter upper cylinder half, then, also experience stroke admission, compressed air expand, piston inertia slide three phases, complete Whole cycle of operation.
This programme is drill bit 4 and the pneumatic means that can produce high-frequency percussion effect of advanced band guide function to be put into At the bottom of hole, carry out creeping into the instrument of rock drilling.It is using compressed gas as dynamic medium, and produced impact energy is directly passed to Drill bit 4;Drive drilling rod to turn round by rig simultaneously, form the ability to catalase, utilize the compression that high-frequency percussion device is discharged Gas, cools down and deslagging drill bit 4, it is achieved thereby that the purpose of rotary-percussive drilling rock drilling.At high frequency down-the-hole air hammer 3 Under continued smooth clashes into, hold prior to drill bit 4 body fractured rock in advance, there is centering pilot effect, and change traditional Full end face creeps into, and is optimized for multistage core of drawing and creeps in advance, and drilling tool there occurs basic change with rock stress and Cracking Mechanism Change.It is suitable for all types of geology, the rock stratum that the hardest and lossy is strong, or creeps into geological condition complexity, rock stratum fluctuating relatively Greatly, interbedding of soft and hard rocks (creep into hard formation from relatively incompetent bed or creep into relatively incompetent bed from hard formation) etc., require tight for quality technology The superdeep holes of lattice, or to easily producing the geotechnical boring of bore inclining, bending, owing to look ahead system down-hole hammer way-type drilling unit improves Drilling state, and impart the characteristic that its orientation guides, there is splendid borehole perpendicularity.
The advanced guide type down-hole hammer way-type drilling unit that visible this programme provides, can improve effect and drilling quality, reduces work Journey cost, remarkable in economical benefits.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvement or deformation, these improve or Deformation also should be regarded as protection domain of the present utility model.

Claims (9)

1. an advanced guide type down-hole hammer way-type drilling unit, including interconnective high-strength drill pipe and high frequency down-the-hole air hammer, The end of high frequency down-the-hole air hammer is provided with drill bit, it is characterised in that: described drill bit is shower nozzle shape, the axis of its head end Place has the advanced end that at least one-level is protruding, and rear stage is held at the end face axis that previous stage is held in advance protruding in advance, drill bit The end face of head end and advanced end is all distributed multiple post tooth, and the side of drill bit is distributed multiple heel teeths, and the afterbody of drill bit is sheathed on The end of high frequency down-the-hole air hammer, and the end of the afterbody of drill bit and high frequency down-the-hole air hammer be spline connect, the inside of drill bit It is communicated with the gas circuit of multiple steam vents at its afterbody air inlet and its head end, the afterbody air inlet of drill bit and high frequency down-the-hole The nozzle connection of impacter.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: the of described drill bit head One-level surpasses 1/2 that point diameter is not more than the maximum gauge of drill bit head end face, and rear stage surpasses point diameter and is not more than previous stage The 1/2 of advanced end maximum gauge.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1 and 2, it is characterised in that: described drill bit head Diametrically it is divided into bit central for the center of circle and holds center, interior ring region, outer zone these three Bu Chi district in advance, in advanced end Heart district is the end face of advanced end, and interior ring region is that outer zone is with internal ring from super front end external diameter to the region of 3/5 drill bit maximum gauge The external diameter in district is to the region of drill bit maximum gauge.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: described post odontoid uses Circle, taper or cone, tooth pitch is S, and post tooth diameter is d, meets S=2d.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: the facet of described post tooth Use circular arc capitiform, flat-headed or both combined shaped.
6. according to the advanced guide type down-hole hammer way-type drilling unit described in claim 1 or 4 or 5, it is characterised in that: hard rock operation ring Under border, post tooth diameter is not less than 27mm not less than 25mm, heel teeth diameter not less than 20mm, length not less than 18mm, length;In hard Under rock and soft rock working environment, post tooth diameter is not less than 18mm, length not less than 16mm, length not less than 25mm, heel teeth diameter Not less than 27mm.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: described drill bit afterbody interior Spline is 4 ~ 30 keys, and the steam vent of drill bit head is 3 ~ 30, a diameter of 5 ~ 50mm of steam vent.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: described drilling rod be monolayer or Double-deck straight rod-shaped pipe, inner chamber is through single hole groove or diplopore groove, and joint length is 200 ~ 20000mm, drill pipe diameter be 20mm ~ 2000mm, thickness is 5 ~ 800mm, outer cross sectional shape is rounded, rectangle, hexagon, from all directions shape, key-way shape or spiral type.
Advanced guide type down-hole hammer way-type drilling unit the most according to claim 1, it is characterised in that: described high frequency down-the-hole impacts Device includes top connection, sealing ring, non-return valve, spring, combination mat, air inlet seat, outer shell, inner casing, nozzle, piston, spacer, guiding Set, spline housing and round key, the joint length of high frequency down-the-hole air hammer is 500 ~ 5000mm, high frequency down-the-hole air hammer external diameter is 70 ~ 2000mm, outer cross sectional shape is rounded;Between top connection and drilling rod use spiral marking connection, the trapezoidal shape of screw thread, rectangular-shaped, Triangle or pipe screw-like.
CN201620738076.9U 2016-07-14 2016-07-14 Advanced guide type down-hole hammer way-type drilling unit Active CN205778537U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441341A (en) * 2018-10-19 2019-03-08 李新明 Hole-forming device and forming hole method in a kind of construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441341A (en) * 2018-10-19 2019-03-08 李新明 Hole-forming device and forming hole method in a kind of construction

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