CN204326954U - Earthen ruins drilling equipment - Google Patents

Earthen ruins drilling equipment Download PDF

Info

Publication number
CN204326954U
CN204326954U CN201420578566.8U CN201420578566U CN204326954U CN 204326954 U CN204326954 U CN 204326954U CN 201420578566 U CN201420578566 U CN 201420578566U CN 204326954 U CN204326954 U CN 204326954U
Authority
CN
China
Prior art keywords
drilling
drilling rod
rod
base plate
sleeve
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.)
Expired - Fee Related
Application number
CN201420578566.8U
Other languages
Chinese (zh)
Inventor
李玉虎
曹静
刘姣姣
王文军
汪娟丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Normal University
Original Assignee
Shaanxi Normal University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi Normal University filed Critical Shaanxi Normal University
Priority to CN201420578566.8U priority Critical patent/CN204326954U/en
Application granted granted Critical
Publication of CN204326954U publication Critical patent/CN204326954U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Earth Drilling (AREA)

Abstract

A kind of earthen ruins drilling equipment, base plate is placed in the upper surface of slideway by two groups of base plate rollers.Base plate is fixed with a pair round guide, motor mounting plate is arranged on described round guide by slide block.Reducing motor is fixed on motor mounting plate, and swivel joint is sleeved on the output shaft of this reducing motor, one end of adapter sleeve by flange and swivel joint affixed, the other end of this adapter sleeve and one end of drilling rod are socketed by screw thread.The other end of drilling rod is connected with brill.Described drilling rod, to be parallel to each other between round guide and slideway three.The utility model is along with drilling pipe deepening continuously in earthen ruins, be sleeved on stabilizer on drilling rod and be deep in the soil body along with drilling rod, and be supported on the soil body by drill rod support frame, and stabilizer can continue to advance in the soil body along with drilling rod, play the swing preventing drilling rod in boring procedure, ensure that borehole accuracy and safe and reliable, and there is convenient and swift, that operating efficiency is high feature.

Description

Earthen ruins drilling equipment
Technical field
The present invention relates to ancient soil Ruins protection field, specifically a kind of drilling equipment being applicable to earthen ruins reinforcing anchor pole.
Background technology
Earthen ruins refers to the ancient site of primary building material based on soil, and the many ancient soil Architecture sites of NORTHWEST CHINA area remnants, if Xi'an, Shaanxi Tang emperor city wall is containing the human living ruins, the earth gulf, Western Xia Imperial Mausoleum earthen ruins etc. of optical gate earthen ruins, Qinan County, Gansu.These earth construction sites are with a long history, and some is put into world cultural heritage, have very high archaeology and historical value.Due to of the remote past, the ancient soil ruins soil body is loose, intensity is low, porosity is large, and major part all produces serious cracking, finally causes fall damage.At present, anchor rod anchored technology is the important method in compacted soil ruins, effectively can improve the stability of earthen ruins.But, physics, mechanical property and build process due to soil self determine the fragility of earthen ruins, thus the anchoring boring needs for earthen ruins consider more multifactor, must select suitable drilling equipment according to the condition of construction of different earthen ruins engineering objects.
Current existing jumbolter is generally divided into four kinds: pneumatic roof bolter, single hydraulic anchoring-bolt drilling machine, electric anchor rod drilling machine and airborne anchor rod drilling machine.Pneumatic roof bolter is divided into impact type and rotary by broken rock mode difference, and such rig major defect needs compressed air line and source of the gas, and when pressure is less, drilling efficiency is low.Single hydraulic anchoring-bolt drilling machine is divided into monomer slideway type and handheld, although monomer slideway type drilling efficiency is high, and self-powered source, weight is large, mobile effort; Handheld simple to operate and lightweight, but boring stroke is short; Electric anchor rod drilling machine energy consumption is low, high efficiency, but power is less by the restriction of motor weight.Airborne anchor rod drilling machine huge structure, impact driving sight line.
Be in the application for a patent for invention of CN102003138A at publication number, disclose a kind of drilling equipment carrying out high accuracy vertical drilling on concrete.This drilling equipment comprises drill bit and drilling rod, between drill bit and drilling rod from bottom to top be connected with reamer, basket and reducer union in turn, and drilling rod is set with centralizer, the top of drilling rod is connected with kelly by tool joint.This device, using hydraulic press as power source, is suitable for drilling through the less upright opening of the degree of depth in the first-class hard rigid material of concrete.
Although existing jumbolter is a lot, the device for earthen ruins armature boring but has no research.Therefore, be still at the method majority of the existing common anchoring boring in earthen ruins protection field the method taking manually to draw hole at present, it is crude that the method draws hole inwall; hole internal diameter is irregular, and hole extends out, large to earthen ruins surface damage; and it is extremely low to draw hole speed, require great effort time-consuming.And the large scale of construction earthen ruins anchoring of northwest drought, semiarid zone is holed, prior art is obviously difficult to meet the demands.
Summary of the invention
In order to overcome, the hole wall existed in prior art is crude, hole internal diameter is irregular, extend out hole causes earthen ruins surface damage, and the deficiency that efficiency is extremely low, the present invention proposes a kind of earthen ruins drilling equipment.
The present invention includes slideway, base plate roller, base plate, round guide, slide block, motor mounting plate and reducing motor, fixing support rack, drilling rod, stabilizer, drill rod support frame, adapter sleeve and brill.Wherein: base plate is placed in the upper surface of slideway by two groups of base plate rollers.Base plate is fixed with a pair round guide, motor mounting plate is arranged on described round guide by slide block.Reducing motor is fixed on motor mounting plate, and swivel joint is sleeved on the output shaft of this reducing motor, one end of adapter sleeve by flange and swivel joint affixed, the other end of this adapter sleeve and one end of drilling rod are socketed by screw thread.The other end of drilling rod is connected with brill.Described drilling rod, to be parallel to each other between round guide and slideway three.
Foremost fixing support rack is installed at described base plate.The length on this fixing support rack base is greater than the spacing of a pair round guide, and has the guide-track groove of fixing described round guide at this fixing support rack base upper surface.There is the semicircular drilling rod groove for supports drill rods the upper end of this fixing support rack vertical panel.
The quantity of described adapter sleeve is identical with sleeve pipe quantity.The inner surface at described multiple adapter sleeve two ends is flank.In described multiple adapter sleeve, first adapter sleeve is used for the connection of drilling rod and swivel joint, and this adapter sleeve contacts one end external peripheral surface with swivel joint has flange.
Described drilling rod has more piece, often saves between drilling rod by the socket of screw thread head and the tail.Drilling rod external surface between fixing support rack and brill is set with stabilizer.Described stabilizer is made up of sleeve pipe and drill rod support frame, and drill rod support frame suit to be also uniformly fixed on the excircle of sleeve pipe.The internal diameter of described sleeve pipe, slightly larger than the external diameter of drilling rod, when drilling rod loads after in described sleeve pipe, is slidably matched between the two.
Described drill rod support frame is made up of sleeve and three support bars, and the internal diameter of this sleeve is identical with the external diameter of sleeve pipe.The cylindrical shell of described sleeve is cut vertically to be opened, and defines opening; The radial fastening auricle protruded is had at the barrel outer surface of described opening both sides.One end of three support bars is fixed on the external peripheral surface of described sleeve, and the other end of three support bars has support plate, makes the profile of described feet be "T"-shaped.Described support plate upper surface is cambered surface, and the curvature of this cambered surface is identical with the curvature of drilling pipe, and the external diameter of a circle be made up of the support plate upper surface of three feets is identical with the diameter of drilling pipe.
Described brill is made up of connector, be unearthed hole, drilling pipe and brill tooth, and described drilling pipe is the tubular that tail end has end cap, and described connector is positioned at the center of drilling pipe tail end end cap.Described drilling pipe tail end end cap is distributed with 2 ~ 6 unearthed holes; The profile of described brill tooth is triangle, and the angle of boring tooth is 10 °.The thickness of described brill tooth is greater than the thickness of drilling pipe housing.
The symmetrical center line in described baseplate width direction is arranged with one group of locating hole, the symmetrical center line of described motor mounting plate width has a locating hole, and it is corresponding up and down with the position of the locating hole be positioned on base plate to be positioned at the locating hole on motor mounting plate, after the relative position of described motor mounting plate and described base plate is determined, pin rod is inserted and will fix therebetween.
The present invention is directed to the defect of existing anchoring drilling technique in earthen ruins protection field, provide a kind of hole convenient and swift, operating efficiency is high, borehole accuracy is high, safe and reliable and be applicable to multi-environment earthen ruins and reinforce the drilling equipment of anchor pole.
The present invention operationally, along with drilling pipe deepening continuously in earthen ruins, be sleeved on stabilizer on drilling rod and be deep in the soil body along with drilling rod, and be supported on the soil body by drill rod support frame, and stabilizer can continue to advance in the soil body along with drilling rod, play the swing preventing drilling rod in boring procedure, ensure that borehole accuracy and safe and reliable.
Compared with prior art, tool of the present invention has the following advantages:
1, in earthen ruins protection field, instant invention overcomes the time-consuming effort defect of taking a lot of work that existing armature boring technology exists, there is efficient work, safe and reliable and be applicable to the advantage of multi-environment earthen ruins;
2, apparatus of the present invention are equipped with fixing support rack, more piece stabilizer and multiple drill rod support frame, fully take into account the diversity and particularity of earthen ruins environment, make this anchor rod drilling device that bore position can be avoided to offset, the damage of soil body that the swing of drill bit and drilling rod in boring procedure causes can also be avoided, therefore make the present invention have the high and safe and reliable advantage of borehole accuracy;
3, apparatus of the present invention adopt slideway and round guide with the use of, realize two round guide and run construction, the particularity mainly for earthen ruins environment is considered, enables the effective keyhole traveling distance of drilling equipment, increases work efficiency and safe and reliable;
The design of 4, boring in the present invention is unique, the multiple unearthed hole of design, one end of boring, on one end drill bushing wall forward position, uniform multiple triangle bores tooth in addition, and all triangles bore transverse tooth thickness degree and are greater than drill bushing wall wall thickness, this design effectively ensure that drilling pipe is not stained with soil, can effectively increase work efficiency.
The present invention easily manufactures and implements, and easily dismounting and installation, be convenient to later maintenance maintenance, cost-saving, be beneficial to very much and apply.
Accompanying drawing explanation
Fig. 1 a is the front elevation drawing of drilling equipment, and Fig. 1 b is the rear elevation of drilling equipment; Fig. 1 c is the front view of drilling equipment; Fig. 1 d is the top view of drilling equipment; Fig. 1 e is the A-A direction view in Fig. 1 d.
Fig. 2 a is the assembling schematic diagram of drill rod support frame strap bolt; Fig. 2 b is the assembling schematic diagram of drill rod support frame not strap bolt.
Fig. 3 a is the front elevation drawing bored; Fig. 3 b is the rear elevation bored; Fig. 3 c is the top view bored.In figure:
1. slideway; 2. base plate roller; 3. base plate; 4. round guide; 5. slide block; 6. motor mounting plate; 7. reducing motor; 8. swivel joint; 9. bore; 10. adapter sleeve; 11. locating holes; 12. fixing support racks; 13. sleeve pipes; 14. connectors; 15. drilling rods; 16. stabilizers; 17. drill rod support frames; 18. sleeves; 19. auricles; 20. threaded connection holes; 21. bolts; 22. support bars; 23. support plates; 24. unearthed holes; 25. drilling pipes; 26. bore tooth.
Detailed description of the invention
The present embodiment is a kind of drilling equipment reinforcing anchor pole for earthen ruins.
The drilling equipment that described earthen ruins reinforces anchor pole comprises motion, fixing support rack 12, drilling rod 15, stabilizer 16, drill rod support frame 17, adapter sleeve 10 and bores 9.Described motion comprises slideway 1, base plate roller 2, base plate 3, round guide 4, slide block 5, motor mounting plate 6 and reducing motor 7.Wherein:
Base plate 3 is placed in the upper surface of slideway 1 by two groups of base plate rollers 2.Base plate 3 is fixed with a pair round guide 4, motor mounting plate 6 is arranged on described round guide 4 by slide block 5.Reducing motor 7 is fixed on motor mounting plate 6, and swivel joint 8 is sleeved on the output shaft of this reducing motor 7, one end of adapter sleeve 10 by flange and swivel joint 8 affixed, the other end of this adapter sleeve and one end of drilling rod 15 are socketed by screw thread.The other end of drilling rod 15 is connected with connector.Described drilling rod 15, to be parallel to each other between round guide 4 and slideway 1 three.Described slide block adopts straight line round and smooth road slide block.
At base plate 3, fixing support rack 12 is installed foremost, for supports drill rods 15, and fixing described a pair round guide 4.The profile of described fixing support rack 12 is in " convex " font.The length on this fixing support rack 12 base is greater than the spacing of a pair round guide 4, and on this fixing support rack 12 base, there is the semicircular guide-track groove of fixing described round guide 4, one end of described round guide is placed in this guide-track groove, and by semicircular guide-track groove lid, described round guide is fixed.There is the semicircular drilling rod groove for supports drill rods the upper end of this fixing support rack 12 vertical panel, is placed in by described drilling rod in this drilling rod groove, and prevents this drilling rod from deviating from from drilling rod groove by semicircular recess cover.
Described adapter sleeve 10 has multiple, is hollow revolving body, and concrete quantity is identical with sleeve pipe quantity.The inner surface at described multiple adapter sleeve two ends is flank.In described multiple adapter sleeve, first adapter sleeve is used for the connection of drilling rod and swivel joint, and this adapter sleeve contacts one end external peripheral surface with swivel joint has flange.
Described drilling rod has more piece.The external peripheral surface often saving drilling rod one end all has screw thread, and the inner surface of the other end all has flank.When drilling depth is greater than a joint run of steel, each joint drilling rod head and the tail connect, with the requirement of satisfied different drilling depth by the mode that is threaded connection respectively.Drilling rod external surface between fixing support rack 12 and brill 9, is set with stabilizer 16.In the present embodiment, described drilling rod adopts steel drilling rod, and often saving run of steel is 1m, and drilling depth is 2.5m, and drilling rod quantity is 3 joints.During use, the adapter sleeve 10 being had by first segment drilling rod one end of inner threaded surface loading to be fixed on swivel joint 8 is interior and affixed by screw thread, one end second section drilling rod having inner threaded surface is screwed in by first segment drilling rod there being the externally threaded other end, and will second section drilling rod have the externally threaded other end screw in the one end Section of three drilling rod having inner threaded surface, to Section of three drilling rod there is external screw thread one end screw in connector 14, thus drilling rod and brill are connected.Described second section drilling rod is supported on the drilling rod hole be positioned on base plate 3 fixing support rack 12 foremost.
Described stabilizer is made up of sleeve pipe 13 and drill rod support frame 17, and drill rod support frame suit to be also uniformly fixed on the excircle of sleeve pipe.The internal diameter of described sleeve pipe, slightly larger than the external diameter of drilling rod, when drilling rod loads after in described sleeve pipe, is slidably matched between the two.In the present embodiment, described sleeve pipe adopts Steel Casing, and often saving casing length is 0.5m, and sleeve pipe quantity is 2 joints.The described external peripheral surface often saving sleeve pipe two ends all has screw thread.During use, one end of first segment sleeve pipe is screwed in one end of second adapter sleeve 10, one end of second section sleeve pipe is screwed in the other end of second adapter sleeve 10, namely complete the connection between sleeve pipe.Described drill rod support frame is made up of sleeve 18 and three support bars 22, and the internal diameter of this sleeve is identical with the external diameter of sleeve pipe.Described sleeve 18 cylindrical shell is cut vertically to be opened, and defines opening; There is the radial attachment lug 19 protruded at the barrel outer surface of described opening both sides, auricle 19 has concentric threaded connection hole 20, by bolt 21, sleeve 18 is fixed tightly on sleeve pipe.One end of three support bars 22 is fixed on the external peripheral surface of described sleeve, and the other end of three support bars 22 has support plate 23, makes the profile of described feet be "T"-shaped.Described support plate 23 upper surface is cambered surface, and the curvature of this cambered surface is identical with the curvature of drilling pipe, and the external diameter of a circle be made up of support plate 23 upper surface of three feets is identical with the diameter of drilling pipe.
Described brill 9 is made up of connector 14, hole 24 of being unearthed, drilling pipe 25 and brill tooth 26, and described drilling pipe is the tubular that tail end has end cap, and described connector is positioned at the center of drilling pipe 25 tail end end cap, and this connector is tubular, and inner surface is the flank for connecting pole.Described drilling pipe tail end end cap is distributed with 2 ~ 6 unearthed holes, discharges for the soil that will be gathered in boring procedure in drilling pipe; The quantity in described unearthed hole is determined according to holed soil property, and in the present embodiment, Xi'an, Shaanxi Tang emperor city wall is dry containing the soil body of optical gate earthen ruins, and the quantity in hole of being unearthed is 3.Boring tooth 26 has multiple, uniform and be weldingly fixed in drilling pipe 25 front end surface, and in the present embodiment, boring tooth has 9.The profile of described brill tooth is triangle, and the angle of boring tooth is 10 °.The thickness of described brill tooth 26 is greater than the thickness of drilling pipe housing.
The symmetrical center line of described base plate 3 width is arranged with one group of locating hole 27, the symmetrical center line of described motor mounting plate 6 width there is a locating hole, and it is corresponding up and down with the position of the locating hole be positioned on base plate to be positioned at the locating hole on motor mounting plate, after described motor mounting plate 6 and the relative position of described base plate 3 are determined, pin rod is inserted and will fix therebetween.
The course of work: before drilling equipment is started working, inserts one group of locating hole by pin rod, make motor mounting plate 6 be fixed on the least significant end of base plate 3.After reducing motor is started working, bore 9 and start to be rotated counterclockwise.When base plate 3 starts to advance, drilling rod is also moved forward by fixing support rack 12, drilling rod drives brill 9 to move forward, when boring tooth 26 and touching the soil body, bore and 9 progressively start to carry out boring work to the earthen ruins soil body, after brill 9 enters the soil body completely, be sleeved on stabilizer on drilling rod along with drilling rod and enter into the soil body, and be supported on soil body inner surface by drill rod support frame 17, and stabilizer can move on along with drilling rod.When base plate 3 can not advance, pin rod is taken out, motor mounting plate 6 is moved on, completes boring work.In boring procedure, use scoop by outside portalling from unearthed hole mamoty out.

Claims (8)

1. an earthen ruins drilling equipment, is characterized in that, comprises slideway, base plate roller, base plate, round guide, slide block, motor mounting plate and reducing motor, fixing support rack, drilling rod, stabilizer, drill rod support frame, adapter sleeve and brill; Wherein: base plate is placed in the upper surface of slideway by two groups of base plate rollers; Base plate is fixed with a pair round guide, motor mounting plate is arranged on described round guide by slide block; Reducing motor is fixed on motor mounting plate, and swivel joint is sleeved on the output shaft of this reducing motor, one end of adapter sleeve by flange and swivel joint affixed, the other end of this adapter sleeve and one end of drilling rod are socketed by screw thread; The other end of drilling rod is connected with brill; Described drilling rod, to be parallel to each other between round guide and slideway three.
2. a kind of earthen ruins drilling equipment as claimed in claim 1, is characterized in that, is provided with fixing support rack foremost at base plate; The length on this fixing support rack base is greater than the spacing of a pair round guide, and has the guide-track groove of fixing described round guide at this fixing support rack base upper surface; There is the semicircular drilling rod groove for supports drill rods the upper end of this fixing support rack vertical panel.
3. a kind of earthen ruins drilling equipment as claimed in claim 1, it is characterized in that, the quantity of described adapter sleeve is identical with sleeve pipe quantity; The inner surface at described multiple adapter sleeve two ends is flank; In described multiple adapter sleeve, first adapter sleeve is used for the connection of drilling rod and swivel joint, and this adapter sleeve contacts one end external peripheral surface with swivel joint has flange.
4. a kind of earthen ruins drilling equipment as claimed in claim 1, it is characterized in that, described drilling rod has more piece, often saves between drilling rod by the socket of screw thread head and the tail; Drilling rod external surface between fixing support rack and brill is set with stabilizer.
5. a kind of earthen ruins drilling equipment as claimed in claim 1, it is characterized in that, described stabilizer is made up of sleeve pipe and drill rod support frame, and drill rod support frame suit is also uniformly fixed on the excircle of sleeve pipe; The internal diameter of described sleeve pipe, slightly larger than the external diameter of drilling rod, when drilling rod loads after in described sleeve pipe, is slidably matched between the two.
6. a kind of earthen ruins drilling equipment as claimed in claim 5, it is characterized in that, described drill rod support frame is made up of sleeve and three support bars, and the internal diameter of this sleeve is identical with the external diameter of sleeve pipe; The cylindrical shell of described sleeve is cut vertically to be opened, and defines opening; The radial fastening auricle protruded is had at the barrel outer surface of described opening both sides; One end of three support bars is fixed on the external peripheral surface of described sleeve, and the other end of three support bars has support plate, makes the profile of described feet be "T"-shaped; Described support plate upper surface is cambered surface, and the curvature of this cambered surface is identical with the curvature of drilling pipe, and the external diameter of a circle be made up of the support plate upper surface of three feets is identical with the diameter of drilling pipe.
7. a kind of earthen ruins drilling equipment as claimed in claim 1, is characterized in that, described brill is made up of connector, be unearthed hole, drilling pipe and brill tooth, and described drilling pipe is the tubular that tail end has end cap, and described connector is positioned at the center of drilling pipe tail end end cap; Described drilling pipe tail end end cap is distributed with 2 ~ 6 unearthed holes; The profile of described brill tooth is triangle, and the angle of boring tooth is 10 °; The thickness of described brill tooth is greater than the thickness of drilling pipe housing;
8. a kind of earthen ruins drilling equipment as claimed in claim 1, it is characterized in that, the symmetrical center line in described baseplate width direction is arranged with one group of locating hole, the symmetrical center line of described motor mounting plate width has a locating hole, and it is corresponding up and down with the position of the locating hole be positioned on base plate to be positioned at the locating hole on motor mounting plate, after the relative position of described motor mounting plate and described base plate is determined, pin rod is inserted and will fix therebetween.
CN201420578566.8U 2014-10-08 2014-10-08 Earthen ruins drilling equipment Expired - Fee Related CN204326954U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420578566.8U CN204326954U (en) 2014-10-08 2014-10-08 Earthen ruins drilling equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420578566.8U CN204326954U (en) 2014-10-08 2014-10-08 Earthen ruins drilling equipment

Publications (1)

Publication Number Publication Date
CN204326954U true CN204326954U (en) 2015-05-13

Family

ID=53163326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420578566.8U Expired - Fee Related CN204326954U (en) 2014-10-08 2014-10-08 Earthen ruins drilling equipment

Country Status (1)

Country Link
CN (1) CN204326954U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104343383A (en) * 2014-10-08 2015-02-11 陕西师范大学 Drilling device for earthen archaeological site

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104343383A (en) * 2014-10-08 2015-02-11 陕西师范大学 Drilling device for earthen archaeological site

Similar Documents

Publication Publication Date Title
CN104343383B (en) A kind of drilling equipment for earthen ruins
CN206352481U (en) Pipe-following drilling system and the anti-collapse aperture apparatus of steel floral tube
CN103382817B (en) The anti-blocking drilling rod of a kind of mine floor anchoring
CN104929517B (en) Full-hydraulic drill type pressure relieving equipment with double drill bits and pressure relieving method
CN103061673A (en) Multifunctional micropile drilling machine
CN205349223U (en) Drilling equipment for building
CN105618812B (en) A kind of device for rectifying a deviation to building in small space
CN204782754U (en) Double dynamical first all -hydraulic well rig
CN206111088U (en) A high -efficient drilling equipment of controllable formula for earthen archaeological site
CN1982651A (en) Method for mining ultra-long roofbolt slip casting with top plate large-area and long-time exposed under mining well
CN204326954U (en) Earthen ruins drilling equipment
CN203081349U (en) Drill rod screw-off mechanism
CN203847001U (en) Small-bore hard rock broaching device
CN105275388A (en) Drilling equipment for building pile foundation with square cross section
CN204754762U (en) Drilling equipment for building
CN106351588A (en) Efficient pneumatic type rock drill for rock excavation
CN203822169U (en) Drilling type anchor rod
CN202108046U (en) Portable ground anchor for moving drilling machine
CN205876182U (en) Drilling equipment of building square cross -section pile foundation
CN102852157B (en) Manual hole pile digging method employing top-fixing water drilling method
CN206144470U (en) Accurate efficient excavating drill of precision
CN203729872U (en) Angle adjusting mechanism of multifunctional drilling machine
CN205936394U (en) Drilling machine for water conservancy construction
CN203808829U (en) Suspension type omnibearing anchor rod drilling carriage
CN205908258U (en) Pneumatic post drill

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150513

Termination date: 20151008

EXPY Termination of patent right or utility model