CN201738807U - Major diameter downhole hammer - Google Patents
Major diameter downhole hammer Download PDFInfo
- Publication number
- CN201738807U CN201738807U CN2010201283467U CN201020128346U CN201738807U CN 201738807 U CN201738807 U CN 201738807U CN 2010201283467 U CN2010201283467 U CN 2010201283467U CN 201020128346 U CN201020128346 U CN 201020128346U CN 201738807 U CN201738807 U CN 201738807U
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- bushing
- cylinder body
- sleeve
- hammer
- piston
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- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000013016 damping Methods 0.000 claims abstract description 12
- 230000008961 swelling Effects 0.000 claims description 9
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 15
- 239000011435 rock Substances 0.000 abstract description 12
- 230000010349 pulsation Effects 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a major diameter downhole hammer mainly comprising a gas distribution mechanism, an outer sleeve, an inner cylinder body, a piston, an inner sleeve, a drill bit and the like, wherein the gas distribution mechanism and the drill bit are respectively installed at two ends of the cylinder body; a shock absorber is arranged outside and connected with the gas distribution mechanism, and comprises an outer bushing, a tensioning device, a damping spring, a slide bushing and an inner bushing; one end of the inner bushing extends into the outer bushing; the damping spring pushes between annular wings of the outer bushing; the slide bushing is sheathed outside the inner bushing and between the annular wings of the inner bushing and a flange plate; and the slide bushing and the annular wing of the outer bushing are connected through the tensioning device by means of pulling. The major diameter downhole hammer uses compressed air as power to form pulsation crushing capacity against rock and meanwhile, uses the compressed air discharged by an impactor to discharge crushed rock outside, thus realizing the aim of rotary drilling by impact on hole bottom. Therefore, the structure and performance of the impactor are key points for realizing pneumatic drilling. The device is mainly characterized by high energy and large diameter between 800 and 1500mm or above.
Description
Technical field:
The utility model relates to a kind of geotechnical drilling instrument of geotechnical drilling instrument, particularly a kind of pneumatic impact---the Large Diameter DTH Hammer hammer.
Background technology:
Rock and Soil Drilling Engineering has been occupied more and more consequence in the economic construction of current China, much more more and more its application not only relates to the exploration and development of mineral products, and relate to aspects such as building, water supply, municipal administration, traffic, environment, high ferro pile foundation, bridge, harbour basis, coalmine ventilation, relief well, metallurgical exploration.Traditional cutting and grind the detritus mode, rock can not become volumetric fracture, and drilling efficiency is low, and to the bad adaptability of hard and bad ground.Existing pneumatic down hole hammer creeps into and mainly starts from the Drilling shot hole, the well bedrock hole, and the geological prospecting hole, also rare in the application of others.But the air latent hole drill advances technology because of its some following characteristics, has had the advantage of expanding application:
1, drilling efficiency height, production practices prove, it is studied intensively into efficient and has crept into the efficient height 3～10 times than the fluctuation impact rotating, and the reason that efficient improves is: single strike work is big, and deslagging speed height is clean at the bottom of the hole, no second-time breakage; Because no head of liquid, under no phreatic situation, improved broken condition at the bottom of the hole.
2, the post tooth or the ball tooth carbide drill of down-the-hole hammer are accompanied usefulness in hard fractured rock, have both helped brokenly rock, and the compliance higher than the diamond bit life-span is arranged again, greatly reduce the drill bit cost.
3, because of the drilling tool rotating speed is low, drilling tool is less to the collision opportunity of hole wall, and now drilling method is to impact at the bottom of to the hole with high frequency, reduced influence to rock or tilted stratum generation hole deviation, thereby can improve the verticality of boring, simultaneously, also can reduce the hole wall rock and cave in.
4, compared with rotary drilling, down-the-hole hammer drill advance required the pressure of the drill and moment of torsion much smaller.Can alleviate the quality and the ability of the equipment of rig like this, for the heavy caliber hard rock creeps into, the sliding reinforcing in side slope hole bolthole creeps into has created the favourable service condition that has.
5, pneumatic down hole hammer creeps into the no circulation dry operation of employing, and air is not only as power but also as the deslagging medium, and is free from environmental pollution.
6, pneumatic down hole hammer when work single strike work can be produced very big active force in moment, thereby it can be applicable to soft formation and impact compacted not casting and creep into, and also can be used for the rammer Manifold technology of trenchless pipelaying.Development along with down-the-hole hammer form of structure, the optimization of service behaviour, the shown advantage that goes out when studying intensively the improving and use of technology into makes people recognize that more and more down-the-hole hammer drill advances to use in earthquake stratum, mineral exploration and engineer geological prospecting, anchoring engineering, grout hole, the dam inverted vertical hole and has good prospect.The researcher has carried out the improvement design from down-the-hole hammer form of structure, service behaviour in order to expand its range of application both at home and abroad at present, makes it can adapt to the requirement that various engineering is used.
The utility model content:
The utility model has overcome traditional cutting and has ground detritus mode drilling efficiency low, defective to the bad adaptability of hard and bad ground, provide a kind of Large Diameter DTH Hammer hammer, especially diameter that utilizes the air latent hole drill to advance technical design to hammer into shape at the down-the-hole of 800～1500mm and above diameter.
Large Diameter DTH Hammer hammer of the present utility model, it comprises: valve actuating mechanism, the seat of honour, outer sleeve, inner cylinder body, piston, inner sleeve, outer cylinder body, following seat, the key cover, drill bit and brill tooth, inner sleeve is placed in the middle, piston, inner cylinder body, outer cylinder body, outer sleeve is located on outside it successively, valve actuating mechanism and drill bit are installed in the two ends of above-mentioned cylindrical shell respectively, seat of honour ring seal is at inner cylinder body one end and entangle inner sleeve, following seat docks with the other end of outer sleeve, it is characterized in that, damper is positioned at the outside of valve actuating mechanism and is attached thereto, damper comprises overcoat, swelling device, damping spring, sliding sleeve, interior cover, interior cover one end stretches into overcoat inside, and between the annular wing of overcoat, sliding sleeve was sleeved on outside the interior cover in damping spring withstood on, between the inner sleeve shape wing and flange, socket by swelling device between the sliding sleeve and the overcoat annular wing.
Further, its bit diameter is 800～1500mm.
This Large Diameter DTH Hammer hammer is to be a kind of pneumatic percussion tool of power with compressed air.Ballistic work that it produced and frequency of impact can directly be passed to drill bit, and then the revolution by rig and drilling rod drives, formation is to the pulsation breaking capacity of rock, the compressed air that utilizes impactor to discharge simultaneously, drill bit is cooled off and the rock particles after the fragmentation is excreted, thereby realized the purpose that impact rotating creeps at the bottom of the hole.Therefore, the structure of impactor, performance are to realize the pneumatic emphasis that creeps into, the high energy major diameter, diameter 800 millimeters to 1500 millimeters and more than, be the main feature of this equipment.Impactor is a device that can produce percussion, and its basic structure is generally by valve actuating mechanism, and several parts such as interior outer cylinder body, piston are formed.The operating principle of air latent drift is by continuous change intake and exhaust direction, realizes the continuous reciprocating motion of piston in cylinder, thus also continuous repeated stock drill bit, the simple principle and the process of qigong impactor work that Here it is.Cause control to change into row pressure repeatedly and contract the mechanism of direction of air valve actuating mechanism, valve actuating mechanism is the core of impactor, promotes piston stroking upward during air chamber before compressed air enters, and promotes descent of piston when compressed air enters rear gas chamber.Piston is an energy conversion device of impactor, and its relies on piston motion with the mechanical energy of compressed-air actuated power conversion for impacting, and generally is impacting dynamic expression, and the size of ballistic work is decided by the weight and the movement velocity of piston.
The utility model is simple in structure, easy for installation, Rock and Soil Drilling Engineering has been occupied more and more consequence in the economic construction of current China, much more more and more its application not only relates to the exploration and development of mineral products, will be widely used in the various stakes hole basic engineering construction of aspects such as relating to building, water supply, municipal administration, traffic, environment.
Description of drawings
Fig. 1 is the structural representation of Large Diameter DTH Hammer hammer;
Fig. 2 is the structural representation that damper and down-the-hole hammer are installed;
Fig. 3 damper structure for amplifying schematic diagram.
1 valve actuating mechanism, 2 seats of honour, 3 outer sleeves, 4 inner cylinder bodies, 5 pistons, 6 inner sleeves, 7 outer cylinder bodies, 8 times seats, 9 key covers, 10 drill bits, 11 bore tooth, A inlet casing, B exhaust opening, 12 overcoats, 13 swelling devices, 14 damping springs, 15 sliding sleeves, 16 interior covers, 17 Rubber ends.
The specific embodiment
As Figure 1-3, the utility model comprises valve actuating mechanism 1, the seat of honour 2, outer sleeve 3, inner cylinder body 4, piston 5, inner sleeve 6, outer cylinder body 7, following seat 8, key cover 9, drill bit 10 and brill tooth 11, inner sleeve is placed in the middle, piston, inner cylinder body, outer cylinder body, outer sleeve is located on outside it successively, valve actuating mechanism and drill bit are installed in the two ends of above-mentioned cylindrical shell respectively, seat of honour ring seal is at inner cylinder body one end and entangle inner sleeve, following seat docks with the other end of outer sleeve, it is characterized in that, damper is positioned at the outside of valve actuating mechanism and is attached thereto, damper comprises overcoat 12, swelling device 13, damping spring 14, sliding sleeve 15, interior cover 16, interior cover one end stretches into overcoat inside, damping spring withstands between the annular wing of interior overcoat, outside overlapping in sliding sleeve is sleeved on, between the inner sleeve shape wing and flange, socket by swelling device between the sliding sleeve and the overcoat annular wing.The basic functional principle of impactor (referring to Fig. 1), compressed air enters the annular groove of 7 of inner cylinder body 4 and outer cylinder bodies through the left side inlet casing, radial air inlet hole by inner cylinder body enters preceding air chamber (position among the figure), promote piston 5 up (backhaul), gas diminishes and exhaust owing to volume in the rear gas chamber, the following annular groove of cover 6 in annular gap is discharged between piston upper end endoporus and top connection 1 lower core pipe, air chamber is in suction stroke before this moment, and rear gas chamber is in instroke.Behind the endoporus of anchor ring contact inner casing lower end, piston middle part, both closed the inlet channel of preceding air chamber, preceding air chamber is in closed state, and indoor Compressed Gas begins the start of expanding, and continues to promote piston stroking upward, and this is an expansion process.When piston upper end endoporus contacts with core seal of tube face and after closing the exhaust annular groove, gas is in compressive state in the rear gas chamber, enter compression travel.It is up that piston continues, and crosses on the lining behind the rod radial air vent when bottom face, and preceding air chamber begins exhaust, directly is discharged to the bottom annular groove through the lining endoporus, and air chamber is an instroke before this moment.After the piston upper ring surface was crossed the inner casing annular groove, calming the anger began to enter rear gas chamber, and rear gas chamber is in suction stroke, and piston is done retarded motion, was zero and stop motion until speed, had promptly finished the drawback movement of piston.The process of air chamber experience is opposite before and after during piston stroke, and preceding air chamber experiences instroke successively, compression travel and suction stroke, and rear gas chamber experiences suction stroke, expansion stroke and instroke successively.Annular groove drains into annular channel between outer shell and the outer tube through the outer shell radial hole under the waste gas neck bush after the work done of down-the-hole hammer, outside top connection right side steam vent and special stack are discharged, calms the anger and form closed circulation completely in the hole again.
Referring to Fig. 2, Fig. 3, damper is connected with the down-the-hole hammer, and this design scheme is a latest domestic original creation scheme, and the down-the-hole hammer has been equipped with after the damper of Fig. 3 form, will improve the application life of down-the-hole hammer greatly.Damper comprises overcoat, interior cover, swelling device, damping spring, sliding sleeve.The shape of interior overcoat is tubular, and the one end has flange, and the other end is a free end, and there is the outwardly directed annular wing at the middle part near flange one end.During installation, interior cover free end stretches into overcoat inside, between the annular wing of overcoat, outside the cover, between the inner sleeve shape wing and flange, sockets by swelling device between the sliding sleeve and the overcoat annular wing in sliding sleeve is sleeved in damping spring withstands on.The overcoat free end can be installed Rubber end 17 to strengthen damping effect, and interior cover flange is fixed on the down-the-hole hammer.
Claims (2)
1. a Large Diameter DTH Hammer is hammered into shape, comprise: valve actuating mechanism (1), the seat of honour (2), outer sleeve (3), inner cylinder body (4), piston (5), inner sleeve (6), outer cylinder body (7), following seat (8), key cover (9), drill bit (10) and brill tooth (11), inner sleeve is placed in the middle, piston, inner cylinder body, outer cylinder body, outer sleeve is located on outside it successively, valve actuating mechanism and drill bit are installed in the two ends of above-mentioned cylindrical shell respectively, seat of honour ring seal is at inner cylinder body one end and entangle inner sleeve, following seat docks with the other end of outer sleeve, it is characterized in that, damper is positioned at the outside of valve actuating mechanism and is attached thereto, damper comprises overcoat (12), swelling device (13), damping spring (14), sliding sleeve (15), interior cover (16), interior cover one end stretches into overcoat inside, damping spring withstands between the annular wing of interior overcoat, outside overlapping in sliding sleeve is sleeved on, between the inner sleeve shape wing and flange, socket by swelling device between the sliding sleeve and the overcoat annular wing.
2. Large Diameter DTH Hammer hammer as claimed in claim 1 is characterized in that its bit diameter is 800～1500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201283467U CN201738807U (en) | 2010-03-11 | 2010-03-11 | Major diameter downhole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201283467U CN201738807U (en) | 2010-03-11 | 2010-03-11 | Major diameter downhole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738807U true CN201738807U (en) | 2011-02-09 |
Family
ID=43554085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201283467U Expired - Fee Related CN201738807U (en) | 2010-03-11 | 2010-03-11 | Major diameter downhole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738807U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191913A (en) * | 2010-03-11 | 2011-09-21 | 北京天宇通力建筑工程有限公司 | High-energy reverse circulation large-diameter hole-drilling hammer |
| CN103334694A (en) * | 2013-06-17 | 2013-10-02 | 上海宏信设备工程有限公司 | Hydraulic down-hole hammer |
| CN113669002A (en) * | 2021-08-03 | 2021-11-19 | 深圳宏业基岩土科技股份有限公司 | Hard rock stratum combined hole forming construction method for large-diameter cast-in-place pile |
-
2010
- 2010-03-11 CN CN2010201283467U patent/CN201738807U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191913A (en) * | 2010-03-11 | 2011-09-21 | 北京天宇通力建筑工程有限公司 | High-energy reverse circulation large-diameter hole-drilling hammer |
| CN103334694A (en) * | 2013-06-17 | 2013-10-02 | 上海宏信设备工程有限公司 | Hydraulic down-hole hammer |
| CN113669002A (en) * | 2021-08-03 | 2021-11-19 | 深圳宏业基岩土科技股份有限公司 | Hard rock stratum combined hole forming construction method for large-diameter cast-in-place pile |
| CN113669002B (en) * | 2021-08-03 | 2023-12-08 | 深圳宏业基岩土科技股份有限公司 | Combined pore-forming construction method for hard rock stratum of large-diameter cast-in-place pile |
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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: 20110209 Termination date: 20160311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |