CN104033101B - A kind of large-diameter DTH air hammer with Sleeve drill - Google Patents
A kind of large-diameter DTH air hammer with Sleeve drill Download PDFInfo
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- CN104033101B CN104033101B CN201410218494.0A CN201410218494A CN104033101B CN 104033101 B CN104033101 B CN 104033101B CN 201410218494 A CN201410218494 A CN 201410218494A CN 104033101 B CN104033101 B CN 104033101B
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Abstract
The invention discloses a kind of large-diameter DTH air hammer with Sleeve drill, comprise large-diameter DTH air hammer (24), spiral conveying tube (2) and Sleeve drill (13), above element coaxial is arranged, described spiral conveying tube (2) overcoat is positioned at the outside of described large-diameter DTH air hammer (24), to transmit power and to prevent from making described spiral conveying tube (2) and described large-diameter DTH air hammer (24) be separated from each other in impact process, described Sleeve drill (13) is positioned at the outside of described spiral conveying tube (2).The large-diameter DTH air hammer of band Sleeve drill provided by the invention is owing to have employed down-hole hammer and the reverse dual AC power of Sleeve drill, add the impact rotating effect of down-hole hammer, this drilling equipment is under various soft or hard stratum, macadam, boulder bed and the various complex geological conditions such as stone rock stratum that waft, there is very high drilling efficiency, and hole wall quality is good, the high and advantage such as rapid of constructing of vertical precision.
Description
Technical field
The invention belongs to Rock and Soil Drilling Engineering and foundation construction pile foundation technology field, particularly relate to a kind of large-diameter DTH air hammer with Sleeve drill.
Background technology
The method that human use impacts acting is engaged in productive labor and can be traced back to remote ancient times.Ancient times, the mankind carried out fragmentation and processing with regard to having learned utilization impact mode in the productive labor the earliest such as lumbering, fabrication tool, hunting.China working people has just manufactured rope in ancient times and has bored Drilling well, has invented the trigger mechanism of a crossbow again to the period of the Warring States according to impact principle.After gunpowder invention, the principle utilizing gunpowder explosion to produce intense impact effect has invented rocket, cannon etc.Scrutinize the wisdom history of ancient Chinese working people, often can find the application of percussion principle.
Although the mankind have used very early to impact and have helped better produce and work, but these application are all disposable (as bows and arrows) or discontinuous (as axe), and be applied on boring, well also less, really utilizing bump to realize creeping into is the thing of nearly, 200 years.Within 1813, first British Richard Te Liweixike has invented the percussion hammer taking steam as power, and continuous print percussion action is just really become a kind of reality.In Italy engineer Bart, spy and Jie Mansameite improve hammer drill in the past again, and announce experimental study success on August 15th, 1857, this is the beginning of modern ram drilling technology.
Hammer drill is in continuous development subsequently, but it is found that to there is energy dissipation seriously, inefficient problem to the mode of drill bit top applying impact force, so people consider how to apply impact force in the bottom of drill bit.By continuous practice and understanding, real close with modern down-the-hole air hammer (downhole rock drill) structure down-the-hole air hammer, was manufactured and designed by Belgian engineer's Andres Tan Niuyike in nineteen fifty-one.Down-the-hole air hammer can not only make full use of the impact energy of equipment, and noise can be made greatly to reduce, and improves operating environment, alleviates the manual labor that workman is heavy.Due to the outdoor drilling efficiency of down-the-hole air hammer than traditional gang rope impact drill height 2-3 doubly, be acknowledged as the economy of Drilling hard ore and effective rig for the moment.
Down-hole percussion drill hole is also widely used in Japan, Korea S.China is with a vast territory, and the geological condition in each area is widely different, and this band geological condition of southeastern coast is mainly with hard rock, and cobble erratic boulder is main, and geological condition is more complicated.For Complicated Geologic Condition, make down-hole hammer pipe-following drilling, although down-hole hammer is met with and effectivelyly can be carried out retaining wall to hole with pipe, DTH with simultaneous casing technology, for this geology, also exists and inefficient problem larger into rock drilling construction difficulty more.DTH with simultaneous casing is also used for the construction of Small Diameter Pile datum hole, and the construction for large diameter pile datum hole is also rarely found.
Along with urbanization process is constantly accelerated, a lot of big construction item is faced with the heavy difficult problem of duration tight task, and within the limited duration, how to complete to safe and efficient environmental protection assigned tasks becomes ground rock drilling and infrastructure a great problem.
Summary of the invention
The object of this invention is to provide a kind of large-diameter DTH air hammer with Sleeve drill, drive large-diameter DTH air hammer and Sleeve drill to realize double rotating respectively by double speed Bidirectional power head to creep into, to reach aperture, hole wall quality is good, the high and effect rapidly of constructing of vertical precision.
For reaching above object, solution of the present invention is as follows:
The invention provides a kind of large-diameter DTH air hammer with Sleeve drill, comprise large-diameter DTH air hammer, spiral conveying tube and Sleeve drill, above element coaxial is arranged, described spiral conveying tube overcoat is positioned at the outside of described large-diameter DTH air hammer, to transmit power and to prevent from making described spiral conveying tube and described large-diameter DTH air hammer be separated from each other in impact process, described Sleeve drill is positioned at the outside of described spiral conveying tube, and the compressed air that its gap is conducive to rising takes away hole bed rock bits.
Described large-diameter DTH air hammer comprises top connection, outer shell, piston, fairlead, snap ring, sealing ring, Kazakhstan furan, lining, pad, lower contact and drill bit, coaxially arranged successively with upper-part, described top connection and described lower contact to be fixed with the described outer inside wall of cylinder by screw thread and to be connected, described snap ring is embedded in the described outer inside wall of cylinder, and to described piston carry out axial limiting with prevent assemble drill bit time described piston because of deadweight fall down in cylinder body, described fairlead is fixed on described bit central hole by interference fit, enable drill bit described in described piston vertical direction toward impact, described Kazakhstan furan carries out axial location by the described outer inside wall of cylinder and described lining, and position-limiting action is risen to described drill bit, described sealing ring to be embedded in outside the furan of described Kazakhstan in groove, seal between described outer shell and described Kazakhstan furan, prevent compressed air leakage, described pad is between described outer shell and described lower contact, increase the active area of described outer shell and described lower contact, prevent from being threaded be in high-frequency percussion under be damaged, power transmission is given described drill bit by spline fitted by described lower contact.
Described large-diameter DTH air hammer is undertaken being connected to transmit power by drilling rod and double power head.
Bottom described drill bit, the diameter in inserted tooth face is 574mm, and top is 228mm with the diameter of piston phase striking face, and the diameter of center roof vent is 80mm, comprises external splines, 4 steam vents, 8 longitudinal slag-drip openings and 4 transverse row cinder notch; Described external splines carries out being connected with transmitting torque with lower contact rectangle internal spline, dreg removing system at the bottom of described steam vent, described longitudinal slag-drip opening and described transverse row cinder notch composition hole, described steam vent becomes 30 ° with bit central air vent, be arranged symmetrically with, make gas jet can equably at the bottom of topped whole hole.
The shape of described external splines is rectangle, and key is wide is 36mm.
The diameter of described steam vent is 45mm.
The diameter of described longitudinal slag-drip opening and described transverse row cinder notch is 60mm, has arc invaginating structure, is arranged symmetrically with, and under the prerequisite ensureing drill body intensity, can reduce the pressure loss, makes landwaste can faster at the bottom of tap.
Described spiral conveying tube comprises helix tube joint, spiral weld tabs and steel pipe, and described helix tube joint is positioned at one end of described steel pipe, and described helix tube joint and 4 pieces of described spiral weld tabs are welded and fixed and are positioned on described steel pipe.
Described spiral conveying tube carries out interference fit to transmit power by the outer-hexagonal structure of hexagonal structure and top connection in helix tube joint.
The internal diameter of described spiral weld tabs is 406mm, and external diameter is 570mm, and pitch is 440mm.
The internal diameter of described steel pipe is 375mm, and external diameter is 405mm, and thickness is 15mm, and length is 1800mm.
Described helix tube joint has interior hexagonal structure, and external diameter is 405mm, and thickness is 50mm, and the interior hexagon length of side is 127mm, can coordinate, make power be delivered to spiral conveying tube from top connection with the outer-hexagonal structure of top connection.
Described Sleeve drill top has through hole, and can discharge with the aggregate chips that compressed air comes and soil block, described Sleeve drill lower surface is inlaid with brill tooth, can rotate fractured rock.
Described Sleeve drill carries out being connected to transmit power with the slewing equipment of double power head.
The internal diameter of described Sleeve drill is 600mm, and thickness is 20mm.
Described brill tooth is that sheet bores tooth or spherical brill tooth, bores teeth or spherical brill tooth according to different operating mode choose reasonable sheet, simultaneously also can adjusting sleeve pipe bit and large-diameter DTH air hammer relative position, adapts to different stratum conditions.
The present invention compared with the existing technology, has the following advantages and beneficial effect:
Large-diameter DTH air hammer high efficiency drilling and forming hole under various soft or hard stratum, macadam, boulder bed and the various complex geological conditions such as stone rock stratum that waft of band Sleeve drill provided by the invention, simultaneously because the rotation of Sleeve drill is followed up, reach aperture, hole wall quality is good, the high and effect rapidly of constructing of vertical precision; Overcoming the problems such as the noise of traditional rock drilling machine, vibration, mud contamination, is a kind of rig of environment-friendly and green.
The large-diameter DTH air hammer of band Sleeve drill provided by the invention is owing to have employed down-hole hammer and the reverse dual AC power of Sleeve drill, add the impact rotating effect of down-hole hammer, this drilling equipment is under various soft or hard stratum, macadam, boulder bed and the various complex geological conditions such as stone rock stratum that waft, there is very high drilling efficiency, and hole wall quality is good, the high and advantage such as rapid of constructing of vertical precision.
Accompanying drawing explanation
Fig. 1 is the structural representation of large-diameter DTH air hammer shown in embodiment 1.
Fig. 2 is the structural representation of spiral conveying tube shown in embodiment 1.
Fig. 3 is the structural representation of drill bit shown in embodiment 1.
Fig. 4 is the schematic diagram of whole bench drill machine operating principle shown in embodiment 1.
Fig. 5 be embodiment 1 be shown in the schematic diagram of large-diameter DTH air hammer and Sleeve drill relative position under general geology condition.
Fig. 6 be embodiment 1 be shown in the schematic diagram of large-diameter DTH air hammer and Sleeve drill relative position under inclination Bedrock Geology condition.
Fig. 7 is that Sleeve drill lower surface shown in embodiment 1 is inlaid with a kind of structural representation boring tooth.
Fig. 8 is that Sleeve drill lower surface shown in embodiment 1 is inlaid with the another kind of structural representation boring tooth.
Wherein: 1 is top connection, and 2 is spiral conveying tube, and 3 is outer shell, and 4 is piston, and 5 is fairlead, 6 is snap ring, and 7 is sealing ring, and 8 for breathing out furan, and 9 is lining, and 10 is pad, 11 is lower contact, and 12 is drill bit, and 13 is Sleeve drill, and 14 is helix tube joint, 15 is spiral weld tabs, and 16 is steel pipe, and 17 is external splines, and 18 is steam vent, 19 is longitudinal slag-drip opening, and 20 is transverse row cinder notch, and 21 is pile frame, and 22 is double power head, 23 is drilling rod, and 24 is large-diameter DTH air hammer, and 25 is sheet brill tooth, and 26 is spherical brill tooth.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further detailed explanation.
Embodiment 1
As shown in Figures 1 to 3, Fig. 1 is the structural representation of large-diameter DTH air hammer shown in embodiment 1; Fig. 2 is the structural representation of spiral conveying tube shown in embodiment 1; Fig. 3 is the structural representation of drill bit shown in embodiment 1.A kind of large-diameter DTH air hammer with Sleeve drill, comprise large-diameter DTH air hammer 24, spiral conveying tube 2 and Sleeve drill 13, above element coaxial is arranged, described spiral conveying tube 2 overcoat is positioned at the outside of described large-diameter DTH air hammer 24, to transmit power and to prevent from making described spiral conveying tube 2 be separated from each other with described large-diameter DTH air hammer 24 in impact process, described Sleeve drill 13 is positioned at the outside of described spiral conveying tube 2, and the compressed air that its gap is conducive to rising takes away hole bed rock bits.
Described large-diameter DTH air hammer 24 comprises top connection 1, outer shell 3, piston 4, fairlead 5, snap ring 6, sealing ring 7, breathes out furan 8, lining 9, pad 10, lower contact 11 and drill bit 12, coaxially arranged successively with upper-part, described top connection 1 and described lower contact 11 to be fixed with described outer shell 3 inwall by screw thread and to be connected, described snap ring 6 is embedded in described outer shell 3 inwall, and to described piston 4 carry out axial limiting with prevent assemble drill bit 12 time described piston 4 because of deadweight fall down in cylinder body, described fairlead 5 is fixed on described drill bit 12 centre bore by interference fit, make described piston 4 can drill bit 12 described in vertical direction toward impact, described Kazakhstan furan 8 carries out axial location by described outer shell 3 inwall and described lining 9, and to described drill bit 12 position-limiting actions, described sealing ring 7 to be embedded in outside described Kazakhstan furan 8 in groove, seal between described outer shell 3 and described Kazakhstan furan 8, prevent compressed air leakage, described pad 10 is between described outer shell 3 and described lower contact 11, increase the active area of described outer shell 3 and described lower contact 11, prevent from being threaded be in high-frequency percussion under be damaged, power transmission is given described drill bit 12 by spline fitted by described lower contact 11.Breathe out furan 8 by a global facility Linear cut into two, play easy to assembly and to drill bit position-limiting action.
Compressed air from air compressor machine enters top connection 1 after drilling rod 23 centre bore, now compressed air can be divided into two parts, a part is by the centre bore of piston 4 with drill bit 12 inside, finally be discharged at the bottom of drill bit 12 hole, this portion of air serves cooling drill bit 12 and allows the effect that soil is considered to be worth doing, stone is discharged better; Another part is by the cooperation between the inner each element of large-diameter DTH air hammer 24, make piston 4 according to certain frequency drill hammer 12, drill bit 12 and Sleeve drill 13 are with different speed bidirectional rotations under the driving of double power head 22 simultaneously, finally reach the optimum efficiency impacting and rotate broken rock.
Described large-diameter DTH air hammer 24 carries out being connected to transmit power with double power head 22 by drilling rod 23.
Bottom described drill bit 12, the diameter in inserted tooth face is 574mm, and top is 228mm with the diameter of piston 4 phase striking face, and the diameter of center roof vent is 80mm, comprises external splines 17,4 steam vents 18,8 longitudinal slag-drip openings 19 and 4 transverse row cinder notch 20; Described external splines 17 carries out being connected with transmitting torque with lower contact 11 rectangle internal spline, described steam vent 18, described longitudinal slag-drip opening 19 and described transverse row cinder notch 20 form dreg removing system at the bottom of hole, described steam vent 18 becomes 30 ° with drill bit 12 center roof vent, be arranged symmetrically with, make gas jet can equably at the bottom of topped whole hole.
The shape of described external splines 17 is rectangle, and key is wide is 36mm.
The diameter of described steam vent 18 is 45mm.
The diameter of described longitudinal slag-drip opening 19 and described transverse row cinder notch 20 is 60mm, has arc invaginating structure, is arranged symmetrically with, and under the prerequisite ensureing drill bit 12 bulk strength, can reduce the pressure loss, makes landwaste can faster at the bottom of tap.
Described spiral conveying tube 2 comprises helix tube joint 14, spiral weld tabs 15 and steel pipe 16, and described helix tube joint 14 is positioned at one end of described steel pipe 16, and described helix tube joint 14 and 4 pieces of described spiral weld tabs 15 are welded and fixed and are positioned on described steel pipe 16.
Described spiral conveying tube 2 carries out interference fit to transmit power by the outer-hexagonal structure of hexagonal structure and top connection 1 in helix tube joint 14.Compared with deslagging at the bottom of the strong aperture blowing of traditional air-flow, spiral conveying tube 2 deslagging had both reduced the air output of air compressor machine and had gone out wind pressure, reduced the environment pollution to working site simultaneously.
The internal diameter of described spiral weld tabs 15 is 406mm, and external diameter is 570mm, and pitch is 440mm.
The internal diameter of described steel pipe 16 is 375mm, and external diameter is 405mm, and thickness is 15mm, and length is 1800mm.
Described helix tube joint 14 has interior hexagonal structure, and external diameter is 405mm, and thickness is 50mm, and the interior hexagon length of side is 127mm, can coordinate, make power be delivered to spiral conveying tube 2 from top connection 1 with the outer-hexagonal structure of top connection 1.
Described Sleeve drill 13 top has through hole, and can discharge with the aggregate chips that compressed air comes and soil block, described Sleeve drill 13 lower surface is inlaid with brill tooth, can rotate fractured rock.
Described Sleeve drill 13 carries out being connected to transmit power with the slewing equipment of double power head 22.
The internal diameter of described Sleeve drill 13 is 600mm, and thickness is 20mm.
Described brill tooth is that sheet bores tooth 25 or spherical brill tooth 26, bores teeth 25 or spherical brill tooth 26 according to different operating mode choose reasonable sheet, simultaneously also can adjusting sleeve pipe bit 13 and large-diameter DTH air hammer 24 relative position, adapts to different stratum conditions.
Fig. 4 is the schematic diagram of whole bench drill machine operating principle shown in embodiment 1.Double power head 22 drives large-diameter DTH air hammer 24 and Sleeve drill 13 with different speed opposite spins respectively, pile frame 21 applies static pressure with Sleeve drill 13 to whole drilling rod 23, and compressor makes it complete ballistic motion constantly to large-diameter DTH air hammer 24 air feed simultaneously.Under many kinds of force effect, double dynamical down-hole hammer rig can high-effect high-quality complete the task of creeping into, aggregate chips is constantly discharged rig by the hole on Sleeve drill 13 by spiral conveying tube 2.Although Sleeve drill 13 does not have percussion, under static pressure and revolving force effect, bore tooth by lower surface and still can constantly creep into, play the effect of retaining wall simultaneously.
As shown in Figure 5 and Figure 6, Fig. 5 be embodiment 1 be shown in the schematic diagram of large-diameter DTH air hammer and Sleeve drill relative position under general geology condition; Fig. 6 be embodiment 1 be shown in the schematic diagram of large-diameter DTH air hammer and Sleeve drill relative position under inclination Bedrock Geology condition.Fig. 5 is under general geology condition, and the operating position of large-diameter DTH air hammer 24 should below Sleeve drill 13; Fig. 6 is under inclination Bedrock Geology condition, and the operating position of large-diameter DTH air hammer 24 on Sleeve drill 13, should be furnished with to be beneficial to and improve drilling quality and efficiency like this.
As shown in Figure 7 and Figure 8, Fig. 7 is that Sleeve drill lower surface shown in embodiment 1 is inlaid with a kind of structural representation boring tooth; Fig. 8 is that Sleeve drill lower surface shown in embodiment 1 is inlaid with the another kind of structural representation boring tooth.Spherical brill tooth 26 has large, the firm wear-resisting feature of impact resistance, but the easily passivation of spherical brill tooth 26, Sleeve drill 13 rate of penetration can be affected after passivation; It is much slower than spherical brill tooth 26 that sheet bores tooth 25 passivation speed, but soundness and anti-gauge wear are not as spherical brill tooth 26.Can for different working conditions, choose reasonable Sleeve drill 13 profile of tooth.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art are according to announcement of the present invention, and the improvement made for the present invention and amendment all should within protection scope of the present invention.
Claims (10)
1. the large-diameter DTH air hammer with Sleeve drill, it is characterized in that: comprise large-diameter DTH air hammer (24), spiral conveying tube (2) and Sleeve drill (13), above element coaxial is arranged, described spiral conveying tube (2) overcoat is positioned at the outside of described large-diameter DTH air hammer (24), to transmit power and to prevent from making described spiral conveying tube (2) and described large-diameter DTH air hammer (24) be separated from each other in impact process, described Sleeve drill (13) is positioned at the outside of described spiral conveying tube (2).
2. the large-diameter DTH air hammer of band Sleeve drill according to claim 1, it is characterized in that: described large-diameter DTH air hammer (24) comprises top connection (1), outer shell (3), piston (4), fairlead (5), snap ring (6), sealing ring (7), breathes out furan (8), lining (9), pad (10), lower contact (11) and drill bit (12), coaxially arranged successively with upper-part; described top connection (1) and described lower contact (11) to be fixed with described outer shell (3) inwall by screw thread and to be connected, described snap ring (6) is embedded in described outer shell (3) inwall, and to described piston (4) carry out axial limiting with prevent assemble drill bit (12) time described piston (4) because of deadweight fall down in cylinder body, described fairlead (5) is fixed on described drill bit (12) centre bore by interference fit, make described piston (4) can drill bit (12) described in vertical direction toward impact, axial location is carried out by described outer shell (3) inwall and described lining (9) in described Kazakhstan furan (8), and position-limiting action is risen to described drill bit (12), described sealing ring (7) is embedded in the groove of outside, described Kazakhstan furan (8), seal between described outer shell (3) and described Kazakhstan furan (8), described pad (10) is positioned between described outer shell (3) and described lower contact (11), increase the active area of described outer shell (3) and described lower contact (11), power transmission is given described drill bit (12) by spline fitted by described lower contact (11).
3. the large-diameter DTH air hammer of band Sleeve drill according to claim 1, is characterized in that: described large-diameter DTH air hammer (24) carries out being connected to transmit power with double power head (22) by drilling rod (23).
4. the large-diameter DTH air hammer of band Sleeve drill according to claim 2, it is characterized in that: the diameter in inserted tooth face, described drill bit (12) bottom is 574mm, top is 228mm with the diameter of piston (4) phase striking face, the diameter of center roof vent is 80mm, comprises external splines (17), 4 steam vents (18), 8 longitudinal slag-drip openings (19) and 4 transverse row cinder notch (20); Described external splines (17) carries out being connected with transmitting torque with lower contact (11) rectangle internal spline, dreg removing system at the bottom of described steam vent (18), described longitudinal slag-drip opening (19) and described transverse row cinder notch (20) composition hole, described steam vent (18) becomes 30 ° with drill bit (12) center roof vent, be arranged symmetrically with, make gas jet can equably at the bottom of topped whole hole.
5. the large-diameter DTH air hammer of band Sleeve drill according to claim 4, is characterized in that: the shape of described external splines (17) is rectangle, and key is wide is 36mm;
Or the diameter of described steam vent (18) is 45mm;
Or the diameter of described longitudinal slag-drip opening (19) and described transverse row cinder notch (20) is 60mm, has arc invaginating structure, is arranged symmetrically with.
6. the large-diameter DTH air hammer of band Sleeve drill according to claim 2, it is characterized in that: described spiral conveying tube (2) comprises helix tube joint (14), spiral weld tabs (15) and steel pipe (16), described helix tube joint (14) is positioned at one end of described steel pipe (16), and described helix tube joint (14) and 4 pieces of described spiral weld tabs (15) are welded and fixed and are positioned on described steel pipe (16);
Or described spiral conveying tube (2) carries out interference fit to transmit power by the interior hexagonal structure of helix tube joint (14) and the outer-hexagonal structure of top connection (1).
7. the large-diameter DTH air hammer of band Sleeve drill according to claim 6, is characterized in that: the internal diameter of described spiral weld tabs (15) is 406mm, and external diameter is 570mm, and pitch is 440mm;
Or the internal diameter of described steel pipe (16) is 375mm, external diameter is 405mm, and thickness is 15mm, and length is 1800mm;
Or described helix tube joint (14) has interior hexagonal structure, external diameter is 405mm, thickness is 50mm, the interior hexagon length of side is 127mm, can coordinate with the outer-hexagonal structure of top connection (1), make power be delivered to spiral conveying tube (2) from top connection (1).
8. the large-diameter DTH air hammer of band Sleeve drill according to claim 1, is characterized in that: described Sleeve drill (13) top has through hole, and described Sleeve drill (13) lower surface is inlaid with brill tooth.
9. the large-diameter DTH air hammer of band Sleeve drill according to claim 1, is characterized in that: described Sleeve drill (13) carries out being connected to transmit power with the slewing equipment of double power head (22).
10. the large-diameter DTH air hammer of band Sleeve drill according to claim 8, is characterized in that: the internal diameter of described Sleeve drill (13) is 600mm, and thickness is 20mm;
Or described brill tooth is that sheet bores tooth (25) or spherical brill tooth (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410218494.0A CN104033101B (en) | 2014-05-22 | 2014-05-22 | A kind of large-diameter DTH air hammer with Sleeve drill |
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| CN201410218494.0A CN104033101B (en) | 2014-05-22 | 2014-05-22 | A kind of large-diameter DTH air hammer with Sleeve drill |
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| CN104033101B true CN104033101B (en) | 2016-04-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105401878B (en) * | 2015-12-03 | 2019-04-09 | 山河智能装备股份有限公司 | A kind of Large Diameter DTH Hammer hammer |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| CN108360980A (en) * | 2017-12-30 | 2018-08-03 | 天津市九方煤矿机械制造有限公司 | A kind of pneumatic roof bolter |
| CN111238085A (en) * | 2020-01-10 | 2020-06-05 | 中铁十二局集团建筑安装工程有限公司 | Ground source heat pump buried pipe construction method based on stratum formed by soil rock in alternation |
| CN112647839B (en) * | 2021-01-19 | 2023-03-10 | 贵阳云海岩土工程有限公司 | Self-rotating pneumatic down-the-hole hammer |
| CN113404424B (en) * | 2021-07-14 | 2022-09-02 | 深圳市工勘岩土集团有限公司 | Double-power rock breaking construction structure with full casing and down-the-hole hammer follow pipe |
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| JP4969626B2 (en) * | 2009-09-28 | 2012-07-04 | 文男 星 | Cycle hammer for drilling hard rock ground |
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