CN204570679U - The squeezed helical burr ram drilling tool of a kind of variable cross-section - Google Patents
The squeezed helical burr ram drilling tool of a kind of variable cross-section Download PDFInfo
- Publication number
- CN204570679U CN204570679U CN201520206803.2U CN201520206803U CN204570679U CN 204570679 U CN204570679 U CN 204570679U CN 201520206803 U CN201520206803 U CN 201520206803U CN 204570679 U CN204570679 U CN 204570679U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- cylindrical shell
- drilling tool
- expansion
- expansion sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses the squeezed helical burr ram drilling tool of a kind of variable cross-section, and comprise drilling head module, dextrorotation extruding module and the squeezed module of derotation, each portion is assembled successively with standard modular layout; Both chiasma type cross bit can be adopted, also del one word drill bit can be adopted, a kind ofly integrate the helical burr ram drilling tool creeping into digging, twin-feed spiral blade screw soil compaction, reducing extruding reaming triple functions, during forward revolution, expansion sheet closes, and drilling tool is in variational section impacted-expanded pile minor diameter state; Under reversed turning and vertical promotion active force, there are two groups (or three groups) to expand sheet and are flared to the maximum squeezed diameter of drilling tool, heavy in section squeezed hole.Can upper big, lower small be realized, or big end down variable cross-section pile foundation pore-forming requirement, or equal diameter cross section is columniform pore-forming form of structure.Have that low, the squeezed quality of power consumption is more stable, pore-forming time without the need to casting feature, by the squeezed screw thread pore-forming of variable cross-section, meet the stressed rule of pile foundation, significantly can improve the bearing capacity of stake holes.
Description
Technical field
The utility model relates to the squeezed helical burr ram drilling tool of a kind of variable cross-section, is specially a kind of helical burr ram drilling tool integrating brill, squeeze, expand triple functions needed for bore forming of infrastructure industry building foundation.Belong to building trade foundation construction mechanical equipment technical field.
Background technology
The consolidation process of infrastructure industry soft foundation is the important measures improving bearing capacity of foundation soil and accurate control settlement amount, also requires the discharge reducing waste soil and mud in basement process simultaneously, reduces vibration & noise to the impact of environment.The pile foundation technologies such as existing variable-cross-section compaction thread, helical burr ram, screw rod pile, squeezed bored pile, all have without the need to casting or the feature such as soil discharge quantity is few, bearing capacity is high, work progress is simple, are therefore widely applied.But due to existing helical burr ram and screw rod pile pile drill bit, generally all be made up of with the external screw thread be welded on drilling rod the drilling rod body of hollow, and external thread section length and drilling tool length isometric, its weak point is when drilling tool is when creeping into operation, the external surface of whole drilling tool thread and the friction area of the soil body very large, can cause the heating of drilling tool, power consumption is very large; On the other hand, elongated screw thread is as multistage labyrinth ring seals circle, and the stagnation of the circulation of vital energy phenomenon of concrete perfusion when can cause promoting, makes concrete perfusion not occur quality problems smoothly.
Chinese invention patent " spiral soil compaction diameter-variable pile drilling tool and construction method " (application number: 201410294699.7) is threaded interior drilling rod on isometrical outer wall, also has the hammer-imitation type soil compaction body be threaded connection with interior drilling rod outside, by the upper-lower position of adjustment hammer-imitation type soil compaction body during operation, reach further squeezed stake holes internal diameter object.Its weak point is: can not the soil compaction body of reducing to be enclosed in interior drilling rod outside, the resistance be subject to during operation is very large, and therefore its power consumption is higher, operating efficiency is lower; Utility model patent " there is the bidirectional helix extruding enlarging aiguille of leading soil box " (application number: 201020133115.5) also exist and " spiral soil compaction diameter-variable pile drilling tool and construction method " same problem; Patent of invention " bidirectional helix extruding-enlarging pile construction method and bidirectional helix closed extruding-enlarging aiguille " (application number: connecting rod 200710063983.3) from bottom to top successively coaxial sleeve lower helix extruding-enlarging body, sealed extruding expanding body and movable sealing extruding expanding body be equipped with or be shaped with integratedly, its weak point is: when drilling tool is up and when rotating squeezed stake holes, because sealed extruding expanding body can not expand drilling tool diameter further, the soil body that only can collapse in the up pile hole of extruding and expanding drilling tool, can not meet the requirement of reducing stake holes (up big and down small) pile simultaneously.Similar, new patent " there is the bidirectional helix extruding enlarging aiguille of leading soil box " (application number: 201020133115.5) also exist and " bidirectional helix extruding-enlarging pile construction method and bidirectional helix closed extruding-enlarging aiguille " same problem.
For above problem, the utility model applicant has applied for " the squeezed screw thread drilling tool of a kind of reducing " (application number: 201420570719.4) on September 30th, 2014, comprise drill bit, threaded drillpipe, reducing extruding and expanding drilling tool three part, during pile operation, rotate forward the descending boring of drilling tool, up and the upper and lower squeezed cutter of counter-rotating drilling tool radially struts, further squeezed aperture.But in actual applications, when this drill bit still exists operation, little, the upper and lower squeezed cutter of the power consumption range of decrease is not easy the problems such as compacted effect arround stake holes that auto-extending and threaded drillpipe output is uneven.
Summary of the invention
The purpose of this utility model is for problem described in background technology, design the squeezed helical burr ram drilling tool of a kind of variable cross-section, be a kind ofly integrate the helical burr ram drilling tool creeping into digging, spiral soil compaction, reducing extruding reaming triple functions, both can have realized that upper diameter is large, lower diameter is little; Or the variable cross-section pile foundation pore-forming requirement that upper diameter is little, lower diameter is large, also can realize equal diameter cross section is columniform pore-forming form of structure.Without the need to casting feature when there is low, the squeezed steady quality of power consumption, pore-forming, by the squeezed screw thread pore-forming of variable cross-section, meet the universal law that pile foundation is stressed, environmental protection more, significantly can improve the bearing capacity of stake holes.
The technical solution of the utility model is: the squeezed helical burr ram drilling tool of a kind of variable cross-section, comprise the drilling head module (I) being positioned at lower end, the dextrorotation being positioned at middle part extruding module (II) and superposed derotation squeezed module (III) three part, assembled successively with standard modular layout between each several part;
Described dextrorotation extruding module (II) comprising: drill bit cylindrical shell (9), drill bit valve (13), bearing pin (15), back-moving spring (14) and interior six square sets (7); Described drill bit cylindrical shell (9) is the up big and down small conical shell of first-class wall thickness, have the trapezoidal soil compaction blade (10) of dextrorotation twin-feed spiral outside conical shell, starting point place, described twin-feed spiral trapezoidal soil compaction blade (10) lower end has the dismountable forward in arc transition to cut pick tooth (11); Also have two symmetrical consistent with twin-feed spiral soil compaction blade (10) starting point direction to go out concrete breach in drill bit cylindrical shell (9) lower end, described breach there is hinged-support, described drill bit valve (13) has fraising, and described fraising and back-moving spring (14) are hinged by bearing pin (15) and described hinged-support; During bore operation, drill bit valve (13) is normally closed, and in concrete perfusion process, drill bit valve (13) is opened automatically;
The squeezed module of described derotation (III) comprising: expansion cylindrical shell (3), drill bit mandrel (1), upper expansion sheet (4), lower expansion sheet (6), stub axle (2); Described expansion cylindrical shell (3) is the hollow cylindrical body adopting high-abrasive material integral precision casting shaping, there is keyway expansion cylindrical shell (3) inner side, described drill bit mandrel (1) is hollow tubular, drill bit mandrel (1) is sleeved in expansion cylindrical shell (3), and the outside of drill bit mandrel (1) is welded with and expands the cylindricality feather key (16) that inside cylindrical shell (3), keyway is slidably matched;
It is characterized in that:
On the outer wall of described expansion cylindrical shell (3), be evenly equipped with at least two longitudinal ribs, and:
Road, upper, middle and lower three cyclic rib;
Described upper and lower twice cyclic rib is coherent cyclic rib, and one, described centre cyclic rib is discontinuous cyclic rib, and described upper expansion sheet (4) is distributed in, between middle twice cyclic rib, during lower expansion sheet (6) is distributed in, between lower twice cyclic rib;
Described upper expansion sheet (4) and lower expansion sheet (6) respectively have at least two groups and are be uniformly distributed in expansion cylindrical shell (3) outside, and upper expansion sheet (4) and lower expansion sheet (6) are all be movably connected in expansion cylindrical shell (3) by stub axle (2);
Between the bottom of upper expansion sheet (4) and the top of lower expansion sheet (6), have curved concavo-convex, described arcuate relief platform expands linkage between sheet (4) and lower expansion sheet (6) on being formed;
On described expansion cylindrical shell (3) outer wall the upper and lower expansion sheet of non-installation rib between, be also evenly equipped with wear plate (5), described wear plate (5) is connected in expansion cylindrical shell (3) by bolt;
The outside of described drill bit mandrel (1) is also welded with protruding spherical steel ball (18), described upper expansion sheet (4) has spherical shrinkage pool with the inner side of lower expansion sheet (6), when drill bit mandrel (1) dextrorotation, described spherical steel ball (18) is in the spherical shrinkage pool of upper and lower expansion sheet; When drill bit mandrel (1) reversely rotates, protruding spherical steel ball (18) pushes expansion sheet (4) and lower expansion sheet (6) around stub axle (2) radially spreading, and outside drilling tool the soil body reaction force under, upper expansion sheet (4) and lower expansion sheet (6) turn to the extreme position needed for drilling tool reaming;
There are outer six square joints docked with described interior six square sets (7) adopting submerged arc welding described drill bit mandrel (1) lower end be sleeved in expansion cylindrical shell (3), is connected in one between interior six square sets (7) and outer six square joints by latch;
In described six square sets (7) outer wall on, the annular spread antifriction alloy arc extruding expanding body (8) that has at least three roads conveniently detachable from top to bottom;
The top of described drill bit cylindrical shell (9) is connected by submerged arc welding with between interior six square sets (7);
Be positioned at the lower edge that drill bit cylindrical shell (9) bottom goes out concrete breach, have the pedestal boss of connection drilling head module (I), described pedestal boss has the hole of drilling head module (I) that to be connected by bolt; Be that the mutual embedding mode of concavo-convex of right-angled intersection is docked between drilling head module (I) with described pedestal boss, and be connected by high-strength bolt;
Described drilling head module (I) comprises chiasma type cross bit (12), or del one word drill bit.
The squeezed helical burr ram drilling tool of a kind of variable cross-section as above, is characterized in that: be certainly positioned at six square sets (7) on drill bit cylindrical shell (9) top to the inner side gone out between concrete breach being positioned at drill bit cylindrical shell (9) bottom, and also seal weld is connected to instlated tubular (17).Its beneficial effect is: instlated tubular can be eliminated affects filling concrete because of drilling tool heating.
Preferred: the external diameter of described twin-feed spiral soil compaction blade (10) is less than or equal to the external diameter that described arc squeezes hole body (8), and the external diameter that described wear plate (5) external diameter and arc squeeze hole body (8) is equal.
Preferred: the drill bit part of described del one word drill bit has positive rotation direction cutting edge.
Preferred: described chiasma type cross bit (12) is the chi structure misplaced up and down with cross, the profile of cross drill bit lower end is inverted trapezoidal, apex point is advanced and be positioned at bit central, the upper end of cross drill bit is in-line, the longitudinal right-angled intersection that misplaces in lower end of cross drill bit, the pick tooth being inlaid with carbide alloy is distributed in drill bit right-angled intersection body ring-type position respectively.
Preferred: described chiasma type cross bit or del one word drill bit all adopt high-abrasive material hot investment casting shaping.
The beneficial effects of the utility model are:
(1) the squeezed helical burr ram drilling tool of the utility model variable cross-section integrates and creeps into digging, spiral soil compaction, reducing extruding reaming triple functions, both can realize that upper diameter is large, lower diameter is little; Or the variable cross-section pile foundation pore-forming requirement that upper diameter is little, lower diameter is large, also can realize equal diameter cross section is columniform pore-forming form of structure.The variable cross-section squeezed helical burr ram drilling tool that stake side can form thread-rolling screw is that market is required.
On year-on-year basis full thread drilling tool to have power consumption low, squeezed steady quality, without the need to casting during pore-forming, by the squeezed screw thread pore-forming of variable cross-section, meets the universal law that pile foundation is stressed, environmental protection more, significantly can improve the bearing capacity of stake.
(3) cross type drill bit is suitable for creeping into sand gravel, hard plastic clay stratum; Del one word drill bit is suitable for the slightly soft formation such as clay, silty clay, silt. and drill bit and drilling tool extrude between cylindrical shell and adopt the mutual embedding mode of concavo-convex of right-angled intersection to dock, high-strength bolt is connected, Universal joint, can select according to the change on stratum, Universal joint, can rapid interchangeable.Strong adaptability, substantially increases operating efficiency.
(4) because the external diameter of twin-feed spiral blade and crowded hole body are equal diameter, during pore-forming, the height of trapezoid blade diminishes with the increasing of cylindrical shell tapering diameter, the soil body herein is also squeezed to hole wall fully with the change of helical blade diameter, helical blade with formed good spiral self tapping propulsion characteristic by compacted pile peripheral earth, the pressurization in drilling process can be successfully managed.
In drilling process when forward turns round, upper and lower expansion sheet is in closure state along dextrorotation direction, and the diameter of drilling tool is in the minor diameter state of variational section impacted-expanded pile; When under reversed turning and vertical promotion active force, upper and lower expansion sheet is reverse with the shape of parabola negative angle, opens to the limit maximum angle of drilling tool and squeezed diameter, realizes drilling tool heavy in section squeezed hole function.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment variable cross-section squeezed helical burr ram drilling tool perspective view;
Fig. 2 is variable cross-section squeezed helical burr ram drilling tool structure elevation;
Fig. 3 has two groups of expansion chip drilling tool extruding expanding body sectional drawings;
Fig. 4 has three groups of expansion chip drilling tool extruding expanding body sectional drawings;
Fig. 5 is weak soil type one word apex point perspective view;
Fig. 6 is cross apex point perspective view.
Mark in figure: I-drill bit (apex point) module, II-dextrorotation extruding module, the squeezed module of III-derotation.
1-drill bit mandrel, 2-stub axle, 3-expansion cylindrical shell, 4-above expand sheet, 5-wear plate, 6-under expand sheet, 7-interior six square sets, 8-extruding expanding body, 9-drill bit cylindrical shell, 10-twin-feed spiral trapezoid blade, 11-pick tooth, 12-cross apex point, 13-drill bit valve, 14-back-moving spring, 15-bearing pin, 16-cylindricality feather key, 17-instlated tubular, 18-spherical steel ball.
Detailed description of the invention
Be described in further detail below in conjunction with the enforcement of accompanying drawing to technical scheme:
As shown in Fig. 1 ~ 5, for the squeezed helical burr ram drilling tool of a kind of variable cross-section of the utility model, comprise the drilling head module I being positioned at lower end, the dextrorotation being positioned at middle part extruding module II and the squeezed module of superposed derotation III 3 parts, assembled successively with standard modular layout between each several part, the squeezed helical burr ram drilling tool of composition variable cross-section.
Described drilling head module I is divided into two kinds, and one is that chiasma type cross bit 12(is as Fig. 6).Drill bit designs with the form of the upper and lower staggered cross of cross, the profile of lower end is inverted trapezoidal, and apex point adopts advanced layout placed in the middle, occupies bit central, upper end is the longitudinal right-angled intersection that misplaces in in-line and lower end, and the pick tooth being inlaid with carbide alloy is distributed in drill bit right-angled intersection body ring-type position respectively.The slotted drill (see figure 5) of the another kind of form of drilling head module I to be profile be del.Chiasma type cross bit or slotted drill are all adopt high-abrasive material hot investment casting shaping, and the drill bit part of the yi word pattern in del has positive rotation direction cutting edge, without the need to installing pick tooth.
See Fig. 1 ~ 3, dextrorotation extruding module II comprises drill bit cylindrical shell 9, drill bit valve 13, bearing pin 15, back-moving spring 14 and interior six square sets 7; Also have wear plate 5, instlated tubular 17.Drill bit cylindrical shell 9 is up big and down small conical shells of first-class wall thickness, has the trapezoidal soil compaction blade 10 of dextrorotation twin-feed spiral outside conical shell, and starting point place, twin-feed spiral trapezoidal soil compaction blade 10 lower end has the dismountable forward in arc transition to cut pick tooth 11; Also have two symmetrical consistent with twin-feed spiral soil compaction blade 10 starting point direction to go out concrete breach in drill bit cylindrical shell 9 lower end, described breach there is hinged-support, described drill bit valve 13 has fraising, and it is hinged with described hinged-support that described fraising and back-moving spring 14 pass through bearing pin 15; During bore operation, drill bit valve 13 is normally closed, and in concrete perfusion process, drill bit valve 13 is opened automatically.
On the outer wall of expansion cylindrical shell 3, be evenly equipped with the longitudinal rib of at least two Vertical dimension distributions, and road, upper, middle and lower three level is to the cyclic rib of distribution.Wherein upper and lower twice cyclic rib is coherent cyclic rib, and middle one cyclic rib is discontinuous cyclic rib.Upper expansion sheet 4 is distributed in, between middle twice cyclic rib, during lower expansion sheet 6 is distributed in, between lower twice cyclic rib.Be evenly equipped with at least two groups between upper, middle twice cyclic rib and expand sheet (4), in, between lower twice cyclic rib, sheet (6) is expanded under being evenly equipped with at least two groups, upper and lower expansion sheet rotates around stub axle (2), between the bottom of upper expansion sheet 4 and the top of lower expansion sheet 6, have curved concavo-convex, described arcuate relief platform forms linkage between upper expansion sheet 4 and lower expansion sheet 6;
Between the rib that the outer wall of expansion cylindrical shell 3 does not install upper and lower expansion sheet, be also evenly equipped with wear plate 5, in the present embodiment, wear plate 5 is connected on expansion cylindrical shell 3 by bolt.
The outside of drill bit mandrel 1 is also welded with protruding spherical steel ball 18, the position that upper expansion sheet 4 is corresponding with spherical steel ball 18 with the inner side of lower expansion sheet 6 has spherical shrinkage pool, its effect is: when 1 dextrorotation of drill bit mandrel, and spherical steel ball 18 is in the spherical shrinkage pool of upper and lower expansion sheet; When drill bit mandrel 1 reversely rotates, protruding spherical steel ball 18 pushes expansion sheet 4 and lower expansion sheet 6 around stub axle 2 radially spreading simultaneously, and outside drilling tool the soil body reaction force under, upper expansion sheet 4 and lower expansion sheet 6 turn to the extreme position (maximum gauge position) needed for drilling tool reaming.
The top of drill bit cylindrical shell 9 is connected by submerged arc welding with between interior six square sets 7, and from six square sets 7 in drill bit cylindrical shell 9 top to the inner side gone out between concrete breach in drill bit cylindrical shell 9 bottom, also seal weld is connected to instlated tubular 17.The effect that described instlated tubular is similar to vacuum characteristic eliminates to affect filling concrete because of drilling tool heating.
Described drill bit mandrel 1 lower end be sleeved in expansion cylindrical shell 3 adopts submerged arc welding mode, is welded with outer six square joints, is connected in one between interior six square sets (7) and outer six square joints by latch.
As seen from Figure 2, in the utility model embodiment, on the outer wall of interior six square sets 7, evenly annular is distributed with conveniently detachable antifriction alloy arcuation extruding expanding body 8 rib in three roads from top to bottom.
The external diameter of described twin-feed spiral soil compaction blade 10 is slightly less than the external diameter with described crowded hole body 8 rib, and described wear plate 5 external diameter is also equal with the external diameter of crowded hole body 8 rib.
Can be found out by Fig. 1 or Fig. 2, be positioned at the bottom of the symmetric windows of the bottom of drill bit cylindrical shell 9, there is the pedestal boss connecting drill bit, pedestal boss is drilled with the bolt hole of the drilling head module I that is connected, in work, the male and fomale(M&F) on drill bit top and the male and fomale(M&F) of drill bit cylindrical shell 9 bottom with coordinate, and adopt high-strength bolt that drilling head module I and dextrorotation are extruded module II to be fastenedly connected.
See Fig. 1 ~ 3, the squeezed module of derotation III comprises expansion cylindrical shell 3, drill bit mandrel 1, upper expansion sheet 4, lower expansion sheet 6, stub axle 2; Described expansion cylindrical shell 3 is the hollow cylindrical bodies adopting high-abrasive material integral precision casting shaping, keyway is had inside expansion cylindrical shell 3, described drill bit mandrel 1 is hollow tubular, drill bit mandrel 1 is sleeved in expansion cylindrical shell 3, and the outside of drill bit mandrel 1 is welded with and the cylindricality feather key 16 expanded keyway inside cylindrical shell 3 and be slidably matched; Described upper expansion sheet 4 or lower expansion sheet 6 are evenly distributed on the upper and lower outside expansion cylindrical shell 3, and are movably connected on expansion cylindrical shell 3 by stub axle 2.
Fig. 3 has two groups of expansion chip drilling tool extruding expanding body sectional drawings, and Fig. 4 has three groups of expansion chip drilling tool extruding expanding body sectional drawings.
See Fig. 6, chiasma type cross bit 12 is the chi structures misplaced up and down with cross, the profile of cross drill bit lower end is inverted trapezoidal, apex point is advanced and be positioned at bit central, the upper end of cross drill bit is in-line, the longitudinal right-angled intersection that misplaces in lower end of cross drill bit, the pick tooth being inlaid with carbide alloy is distributed in drill bit right-angled intersection body ring-type position respectively.
Preferably, the drill bit part of del one word drill bit has positive rotation direction cutting edge.Two kinds of drill bits described in drilling head module I all adopt high-abrasive material hot investment casting shaping.
Chiasma type cross bit or del one word drill bit with the connected mode between drill bit cylindrical shell 9 are: the mutual embedding mode of concavo-convex of right-angled intersection is docked, and is connected by high-strength bolt.This kind of modular docking form, can be convenient to the exchange of bit change-over or inhomogeneity drill bit.
The squeezed helical burr ram drilling tool of the utility model variable cross-section integrates and creeps into digging, spiral soil compaction, reducing extruding reaming triple functions, both can realize that upper diameter is large, lower diameter is little; Or the variable cross-section pile foundation pore-forming requirement that upper diameter is little, lower diameter is large, also can realize equal diameter cross section is columniform pore-forming form of structure.The variable cross-section squeezed helical burr ram drilling tool that stake side can form thread-rolling screw is that market is required.
To have power consumption low for full thread drilling tool on year-on-year basis, and squeezed steady quality, without the need to casting during pore-forming, by the squeezed screw thread pore-forming of variable cross-section, meets the universal law that pile foundation is stressed, environmental protection more, significantly can improve the bearing capacity of stake.
Cross type drill bit is suitable for creeping into sand gravel, hard plastic clay stratum, del one word drill bit is suitable for the slightly soft formation such as clay, silty clay, silt, strong adaptability, operating efficiency can be improved greatly, drill bit and drilling tool extrude between cylindrical shell and adopt the mutual embedding mode of concavo-convex of right-angled intersection to dock, high-strength bolt is connected, and can conveniently change.
Because the external diameter of twin-feed spiral blade and crowded hole body are equal diameter, during pore-forming, the height of trapezoid blade diminishes with the increasing of cylindrical shell tapering diameter, the soil body herein is also squeezed to hole wall fully with the change of helical blade diameter, helical blade with formed good spiral self tapping propulsion characteristic by compacted pile peripheral earth, the pressurization in drilling process can be successfully managed.
Fa Benming embodiment is in drilling process, and when drilling tool forward turns round, upper and lower expansion sheet is in closure state along dextrorotation direction, and as expanded state when sheet 4 or 6 is positioned at IV in figure in 3, the diameter of drilling tool is in the minor diameter state of variational section impacted-expanded pile; When drilling tool reversed turning, on drill bit mandrel 1, the spherical steel ball 18 of projection of welding pushes expansion sheet 4 and lower expansion sheet 6 around stub axle 2 radially spreading simultaneously, and outside drilling tool the soil body reaction force under, upper expansion sheet 4 and lower expansion sheet 6 turn to the extreme position (maximum squeezed diameter) needed for drilling tool reaming, now as the state when expansion sheet 4 or 6 in Fig. 3 (and Fig. 4) is positioned at V, realize drilling tool heavy in section squeezed hole function.
These are only embodiment of the present utility model, but be not limited to the utility model, all make within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within right of the present utility model.
Claims (6)
1. the squeezed helical burr ram drilling tool of variable cross-section, comprises the drilling head module (I) being positioned at lower end, the dextrorotation being positioned at middle part extruding module (II) and superposed derotation squeezed module (III) three part, assembled successively with standard modular layout between each several part;
Described dextrorotation extruding module (II) comprising: drill bit cylindrical shell (9), drill bit valve (13), bearing pin (15), back-moving spring (14) and interior six square sets (7); Described drill bit cylindrical shell (9) is the up big and down small conical shell of first-class wall thickness, have the trapezoidal soil compaction blade (10) of dextrorotation twin-feed spiral outside conical shell, starting point place, described twin-feed spiral trapezoidal soil compaction blade (10) lower end has the dismountable forward in arc transition to cut pick tooth (11); Also have two symmetrical consistent with twin-feed spiral soil compaction blade (10) starting point direction to go out concrete breach in drill bit cylindrical shell (9) lower end, described breach there is hinged-support, described drill bit valve (13) has fraising, and described fraising and back-moving spring (14) are hinged by bearing pin (15) and described hinged-support; During bore operation, drill bit valve (13) is normally closed, and in concrete perfusion process, drill bit valve (13) is opened automatically;
The squeezed module of described derotation (III) comprising: expansion cylindrical shell (3), drill bit mandrel (1), upper expansion sheet (4), lower expansion sheet (6), stub axle (2); Described expansion cylindrical shell (3) is the hollow cylindrical body adopting high-abrasive material integral precision casting shaping, there is keyway expansion cylindrical shell (3) inner side, described drill bit mandrel (1) is hollow tubular, drill bit mandrel (1) is sleeved in expansion cylindrical shell (3), and the outside of drill bit mandrel (1) is welded with and expands the cylindricality feather key (16) that inside cylindrical shell (3), keyway is slidably matched; Described upper expansion sheet (4) or lower expansion sheet (6) respectively have at least two groups and are evenly distributed on the upper and lower in expansion cylindrical shell (3) outside, and are movably connected in expansion cylindrical shell (3) by stub axle (2);
It is characterized in that:
On the outer wall of described expansion cylindrical shell (3), be evenly equipped with at least two longitudinal ribs, and:
Road, upper, middle and lower three cyclic rib;
Described upper and lower twice cyclic rib is coherent cyclic rib, and one, described centre cyclic rib is discontinuous cyclic rib, and described upper expansion sheet (4) is distributed in, between middle twice cyclic rib, during lower expansion sheet (6) is distributed in, between lower twice cyclic rib;
Described upper expansion sheet (4) and lower expansion sheet (6) respectively have at least two groups and are be uniformly distributed in expansion cylindrical shell (3) outside, and upper expansion sheet (4) and lower expansion sheet (6) are all be movably connected in expansion cylindrical shell (3) by stub axle (2);
Between the bottom of upper expansion sheet (4) and the top of lower expansion sheet (6), have curved concavo-convex, described arcuate relief platform expands linkage between sheet (4) and lower expansion sheet (6) on being formed;
On described expansion cylindrical shell (3) outer wall the upper and lower expansion sheet of non-installation rib between, be also evenly equipped with wear plate (5), described wear plate (5) is connected in expansion cylindrical shell (3) by bolt;
The outside of described drill bit mandrel (1) is also welded with protruding spherical steel ball (18), described upper expansion sheet (4) has spherical shrinkage pool with the inner side of lower expansion sheet (6), when drill bit mandrel (1) dextrorotation, described spherical steel ball (18) is in the spherical shrinkage pool of upper and lower expansion sheet; When drill bit mandrel (1) reversely rotates, protruding spherical steel ball (18) pushes expansion sheet (4) and lower expansion sheet (6) around stub axle (2) radially spreading, and outside drilling tool the soil body reaction force under, upper expansion sheet (4) and lower expansion sheet (6) turn to the extreme position needed for drilling tool reaming;
There are outer six square joints docked with described interior six square sets (7) adopting submerged arc welding described drill bit mandrel (1) lower end be sleeved in expansion cylindrical shell (3), is connected in one between interior six square sets (7) and outer six square joints by latch;
In described six square sets (7) outer wall on, the annular spread antifriction alloy arc extruding expanding body (8) that has at least three roads conveniently detachable from top to bottom;
The top of described drill bit cylindrical shell (9) is connected by submerged arc welding with between interior six square sets (7);
Be positioned at the lower edge that drill bit cylindrical shell (9) bottom goes out concrete breach, have the pedestal boss of connection drilling head module (I), described pedestal boss has the hole of drilling head module (I) that to be connected by bolt; Be that the mutual embedding mode of concavo-convex of right-angled intersection is docked between drilling head module (I) with described pedestal boss, and be connected by high-strength bolt;
Described drilling head module (I) comprises chiasma type cross bit (12), or del one word drill bit.
2. the squeezed helical burr ram drilling tool of a kind of variable cross-section as claimed in claim 1, it is characterized in that: be certainly positioned at six square sets (7) on drill bit cylindrical shell (9) top to the inner side gone out between concrete breach being positioned at drill bit cylindrical shell (9) bottom, also seal weld is connected to instlated tubular (17).
3. the squeezed helical burr ram drilling tool of a kind of variable cross-section as claimed in claim 1, it is characterized in that: the external diameter of described twin-feed spiral soil compaction blade (10) is less than or equal to the external diameter that described arc squeezes hole body (8), and the external diameter that described wear plate (5) external diameter and arc squeeze hole body (8) is equal.
4. the squeezed helical burr ram drilling tool of a kind of variable cross-section as claimed in claim 1, is characterized in that: the drill bit part of described del one word drill bit has positive rotation direction cutting edge.
5. the squeezed helical burr ram drilling tool of a kind of variable cross-section as claimed in claim 1, it is characterized in that: described chiasma type cross bit (12) is the chi structure misplaced up and down with cross, the profile of cross drill bit lower end is inverted trapezoidal, apex point is advanced and be positioned at bit central, the upper end of cross drill bit is in-line, the longitudinal right-angled intersection that misplaces in lower end of cross drill bit, the pick tooth being inlaid with carbide alloy is distributed in drill bit right-angled intersection body ring-type position respectively.
6. the squeezed helical burr ram drilling tool of a kind of variable cross-section as claimed in claim 1, is characterized in that: described chiasma type cross bit or del one word drill bit all adopt high-abrasive material hot investment casting shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206803.2U CN204570679U (en) | 2015-04-08 | 2015-04-08 | The squeezed helical burr ram drilling tool of a kind of variable cross-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206803.2U CN204570679U (en) | 2015-04-08 | 2015-04-08 | The squeezed helical burr ram drilling tool of a kind of variable cross-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204570679U true CN204570679U (en) | 2015-08-19 |
Family
ID=53863342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520206803.2U Withdrawn - After Issue CN204570679U (en) | 2015-04-08 | 2015-04-08 | The squeezed helical burr ram drilling tool of a kind of variable cross-section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204570679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762962A (en) * | 2015-04-08 | 2015-07-08 | 武汉高铁桩工科技有限公司 | Variable cross-section extrusion-expansion screw pile drilling tool |
| CN109944234A (en) * | 2019-03-20 | 2019-06-28 | 广州市永蓝环保科技有限公司 | The guide frame and its application method of a kind of piling machine end mud flowing |
-
2015
- 2015-04-08 CN CN201520206803.2U patent/CN204570679U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762962A (en) * | 2015-04-08 | 2015-07-08 | 武汉高铁桩工科技有限公司 | Variable cross-section extrusion-expansion screw pile drilling tool |
| CN109944234A (en) * | 2019-03-20 | 2019-06-28 | 广州市永蓝环保科技有限公司 | The guide frame and its application method of a kind of piling machine end mud flowing |
| CN109944234B (en) * | 2019-03-20 | 2020-12-29 | 广州市永蓝环保科技有限公司 | Guide structure for slurry flow at end part of pile driver and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104762962B (en) | A kind of variable cross-section squeezed Screw Pile drilling tool | |
| CN110043187B (en) | Hydraulic diameter-variable reaming bit of long spiral drilling machine and construction method of cast-in-place pile | |
| CN104018792B (en) | Reducing screw displacement pile drilling tool and construction method thereof | |
| CN103806840B (en) | One-way spiral half soil compaction drill bit and one-way spiral half Squeezing Soil Pile construction technology | |
| CN100549306C (en) | Screw rod stake, helical burr ram pile-forming equipment and one-tenth pile work method | |
| CN105735251A (en) | Bridge pile foundation rotary excavating drilling rig cutting type whole guard barrel follow-up pile forming construction method and system | |
| CN210216402U (en) | Drilling machine for extruding, spraying, reaming and pressure-grouting concrete pile | |
| CN203701981U (en) | Reamer bit | |
| CN103556628B (en) | Spiral conical soil compaction pile construction method | |
| CN104389516A (en) | Squeezing enlarging cast-in-situ bored pile hole forming method | |
| CN204570679U (en) | The squeezed helical burr ram drilling tool of a kind of variable cross-section | |
| CN105822234A (en) | Drill rod assembly with drillable expanded bit for piling machine | |
| CN106049462A (en) | Displacement pile and construction method and drilling tool thereof | |
| CN108266131A (en) | Rotate soil compaction bottom expanding drill and method for constructing foundation pile | |
| CN201034016Y (en) | Hydraulic adjustable expanding drill bit | |
| CN104594809B (en) | Forward screwing impacting-expanding drill tool structure and full screw impacted-expanded pile forming construction method | |
| CN204571847U (en) | The squeezed screw thread drilling tool of a kind of reducing | |
| CN113047774B (en) | Drilling tool assembly for repairing multi-stage hole walls of broken stratum and directional drilling method | |
| CN211173974U (en) | Gas extraction drill rod joint and drilling tool with enhanced slag discharge function | |
| CN210343236U (en) | Thread matching type multi-power composite drilling tool and profile pile | |
| CN205778551U (en) | A kind of Squeezing Soil Pile pile-forming drilling tool | |
| CN113404048A (en) | Scalable integration stake machine equipment that has crowded soil function of pouring | |
| CN208089229U (en) | Rotate soil compaction bottom expanding drill | |
| CN111520078A (en) | Mechanical enlarged head drilling device for anchor cable hole expanding section | |
| CN206267795U (en) | Spiral cylinder soil compaction drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430062 Wuchang, Wuhan, Xu Dong Avenue, international city, building B, block 28, floor 8, floor Patentee after: Wuhan Qiancheng Piling Technology Co., Ltd. Address before: 430062 Wuchang, Wuhan, Xu Dong Avenue, international city, building B, block 28, floor 8, floor Patentee before: Wuhan High Iron Pickets Work Technology Co.,Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |