CN201025046Y

CN201025046Y - Driller for followed tube of wing expansion hole bushing

Info

Publication number: CN201025046Y
Application number: CNU2007201033987U
Authority: CN
Inventors: 于鼎拯; 温向东; 王慨慷; 张照亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-31
Filing date: 2007-01-31
Publication date: 2008-02-20
Anticipated expiration: 2017-01-31

Abstract

The utility model discloses a drill used for pre-reinforcing the grout injecting big tube shed at the bad geology section such as lanky stone wall rock when the underground project is started. The utility model is a wing panel type chambering sleeve and tube drill, which consists of a drill bit 2, a tube boot 4, a sleeve 5 and a drill rod 7. The utility model has the technical characters that the utility model still comprises a chambering wing penal 1 which is symmetrically arranged on the top face of the drill bit 2; the top face of the drill bit 2 is opened with a plurality of grooves which can make the chambering wing panel 1 rotate; when the drill bit rotates withershins, the chambering wing panel 1 rotates taking a fixed shaft core as the center and then uncloses positively and chambers; here, the chambering diameter is bigger than that of the sleeve 5; when the drill bit 2 rotates deasil, chambering wing panel 1 rotates taking the fixed shaft core as the center and returns and shrinks by rotating withershins; the chambering wing panel 1 and the drill bit 2 are in a same plane when in returning; the outer diameter is smaller than the inner hole of the tube boot 4. The utility model can once finish the related working procedures such as the hole drilling, the sleeve mounting and the drill recovering, which has the advantages of rapid construction speed, reliable, convenient and simple technique, low cost and big application range.

Description

Tab style reaming sleeve pipe casing drilling tool

Affiliated field

The invention belongs in tunnel and the Underground Engineering Excavation drilling tool class when adopting leading pre-consolidation grouting supporting daguanpeng construction bore operation in the unfavorable geology location, as the drilling tool of railway tunnel, highway tunnel, city underground tunnel bad geological section daguanpeng construction.

Background technology

In tunnel and underground engineering construction, often run into soft geology sections such as tomography, zone of fracture, joints development, rich water shallow embedding, in order to prevent landslide, land subsidence and surface infrastructure thing to damage, guarantee safe construction, the normal daguanpeng construction that adopts leading pre-consolidation grouting supporting of unit in charge of construction forms strong temporary lining.Do not see tab style reaming sleeve pipe casing drilling tool in present domestic railway tunnel and the underground engineering construction as yet, the weak geology section of doing temporary lining at needs generally adopts the following manner construction: 1) in geology section that can pore-forming, adopt big drill bit to creep into, move back brill after, insert sleeve pipe.2) adopt the drilling pipe that studs with carbide alloy directly to creep in geology section that can not pore-forming, use little drill bit clear hole in sleeve pipe again after reaching the requirement degree of depth.3) clay or sand clay section sleeve pipe directly head into.4) adopt eccentric reaming sleeve pipe casing drilling tool or to heart reaming sleeve pipe casing drilling tool.The drilling tool that above-mentioned daguanpeng construction adopts all exists common shortcoming and deficiency except that the 4th kind, subject matter is 1. to prevent the bit freezing and the hole of collapsing in the breaking surrounding rock pipe roof construction, and following pipe difficulty is big, and useless hole is many.2. the engineering time long, efficient is low.3. can not satisfy the requirement of design to hole depth and angle.The eccentric reaming casing drilling tool is big owing to difficulty of processing, the rigidity of eccentric structure and intensity difference, and use cost is higher, and off-centre is difficult for return when moving back brill, and drilling tool withdraws from difficult.Because reamer is disposable products, can not reclaim use, to heart reaming casing drilling tool so cause use cost higher.

Only see in tunnel and the underground engineering construction abroad and adopt single unit head slewing equipment and down-the-hole hammer to join the report of tab style reaming sleeve pipe casing drilling tool, the tab style reaming sleeve pipe casing drilling tool of not seeing the driving of railway tunnel daguanpeng construction use double acting unit head applies the information of bassoon canopy.

The utility model content

The utility model technical issues that need to address are: a kind of tab style reaming sleeve pipe casing drilling tool is provided, suit in the bad country rock of weak broken, to construct, can once realize finishing concerned process steps such as boring, sleeve pipe installation, drilling tool recovery, speed of application is fast, work efficiency is high, become porosity can reach 100%, and technology is easy, reliable, low-cost, applied widely.

This novel technical solution of this practicality is: a kind of tab style reaming sleeve pipe casing drilling tool, form by drill bit, shoe, sleeve pipe and drilling rod, its technical characterictic is: it also comprises the reaming fin, this reaming fin of drill bit end face symmetric arrangement, end face at drill bit has the groove that several can make the rotation of reaming fin, and when drill bit was rotated counterclockwise, the reaming fin was the axle center rotation with the fin run-on point, forward is opened and is carried out reaming, and this moment, counter bore diameter was greater than sleeve pipe; When drill bit turned clockwise, the reaming fin was the axle center rotation with the fin run-on point, was rotated counterclockwise return and shrank, and its reaming fin and drill bit should be on same planes when return, and external diameter is less than the shoe endoporus.

The utility model compared with prior art has following advantage: 1) speed of fulfiling hole is fast, the work efficiency height, and pipe speed was than first pore-forming under boring reached, and the job practices of back intubate has improved about ten times.2) become the porosity height, because the sleeve pipe follow-up plays the retaining wall effect, do not have the hole of collapsing, bit freezing phenomenon, the construction pore-creating rate can reach 100% in tomography, zone of fracture and covering layer.3) easy and simple to handle, reliably, can guarantee the degree of depth and the angle of designing requirement, in the grouting and reinforcing daguanpeng construction, can guarantee construction safety and quality requirement.4) than eccentric reaming sleeve pipe casing drilling tool handling ease, comparison heart reaming sleeve pipe casing drilling tool cost of use is low, so can reduce operating expenses.5) applied widely, can in other underpin, use again in railway, highway tunnel tomography, zone of fracture and covering layer construction.6) be the drilling tool of using at bad geological section railway tunnel such as stone matter country rock weakness, fragmentation, tomography, joints development and the leading pre-grouting and reinforcing daguanpeng construction of underground construction, be to having the additional and perfect of reaming sleeve pipe casing drilling tool now, remedied the eccentric deficiency that reaches heart reaming sleeve pipe casing drilling tool, reach when creeping into, sleeve pipe and drilling tool follow up synchronously, and drilling tool separates with sleeve pipe when moving back brill.And in sleeve pipe, withdraw from.

Description of drawings

Accompanying drawing 1 is that the utility model tab style reaming sleeve pipe casing drilling tool creeps into view;

Accompanying drawing 2 is that the utility model tab style reaming sleeve pipe casing drilling tool moves back the brill view;

Accompanying drawing 3 is the utility model reaming principle schematic;

Accompanying drawing 4 is the utility model drill bit schematic diagrames;

Accompanying drawing 5 is Fig. 4 A-A direction schematic diagrames;

Accompanying drawing 6 is the utility model reaming fin front views;

Accompanying drawing 7 is the utility model reaming fin vertical views;

Specific embodiments

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

The utility model drilling tool structure characteristics as shown in Figure 1, utilize existing drilling jumbo or anchoring drilling machine to be body, by drilling rod guiding coupling sleeve 8 the rig revolution and impact power through drilling rod 7, easily return shape coupling sleeve 6, guide way 3 reaches on the drill bit 2, when drill bit is subjected to end thrust to push against the scar counter-rotating, to be that the center is reverse with the fixed axis open reaming for reaming fin 1, this moment, counter bore diameter was greater than casing diameter, the thrust that guide way 3 transmits acts on simultaneously and makes shoe 4 tractives sleeve pipe 5 and drilling tool follow-up on the shoe inclined-plane, and accompanying drawing 1 is the state of creeping into.

Move back and stop when boring impacting, just changeing rig, reaming fin 1 is that the axle center counter-rotating resets with reaming fin fixed axis under the effect of hole wall frictional force.Reaming this moment fin diameter is less than the endoporus of shoe 4, and rig is given up the throne and just can be with drilling tool to withdraw from, and sleeve pipe is stayed in the hole, finishes the Guan Peng hole and lays the sleeve pipe task.Sleeve pipe 5 adopts the rectangle rib-loop to connect.During deep well drilling, must be in advance good in relevant factory process.Accompanying drawing 2 is to move back the brill state.

The utility model is installed on the propelling guide rail of existing drilling jumbo or anchoring drilling machine, by drilling rod guiding coupling sleeve link power device, and moment of torsion, ballistic work reached on drill bit and the reaming fin, when drill bit is subjected to end thrust to push against scar and reverses under the rotary torsion effect (counterclockwise), the reaming fin is that reaming is opened at the center clockwise with the fixed axis, counter bore diameter is greater than casing diameter, the ring-shaped step of guide way 3 is pressed on the ring-shaped step of shoe 4, and guide way 3 tractives sleeve pipe and drilling tool follows up synchronously when creeping into.

Move back and stop earlier when boring impacting, subdrilling bits in hole are rinsed back clockwise direction rotary rig well, and reaming fin 1 is an axle center counter-rotating return with reaming fin fixed axis under the effect of hole wall frictional force.Reaming this moment fin diameter is less than the internal diameter of shoe 4, and drilling tool can withdraw from smoothly, finishes the pipe canopy and applies task.

Claims

1. tab style reaming sleeve pipe casing drilling tool, form by drill bit (2), shoe (4), sleeve pipe (5) and drilling rod (7), its technical characterictic is: it also comprises reaming fin (1), this reaming fin (1) of drill bit (2) end face symmetric arrangement, have the groove that several can make reaming fin (1) rotation at the end face of drill bit (2), when drill bit was rotated counterclockwise, reaming fin (1) was that the center rotates with fixing axle center, forward is opened and is carried out reaming, and this moment, counter bore diameter was greater than sleeve pipe (5); When drill bit (2) when turning clockwise, reaming fin (1) is the center rotation with fixing axle center, is rotated counterclockwise return and shrinks, and its reaming fin (1) should be on same plane when return with drill bit (2), and external diameter is less than shoe (4) endoporus.

2. tab style reaming sleeve pipe casing drilling tool according to claim 1 is characterized in that: described reaming fin (1) is for fan-shaped.