CN215595472U - Bundling perfusion down-the-hole hammer drill - Google Patents
Bundling perfusion down-the-hole hammer drill Download PDFInfo
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- CN215595472U CN215595472U CN202121846937.2U CN202121846937U CN215595472U CN 215595472 U CN215595472 U CN 215595472U CN 202121846937 U CN202121846937 U CN 202121846937U CN 215595472 U CN215595472 U CN 215595472U
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Abstract
A cluster perfusion down-the-hole hammer drill comprises a drill rod, a drill bit arranged at the lower end of the drill rod and a power head arranged at the upper end of the drill rod; the drill rod is of a hollow structure, a concrete pouring channel is formed in the drill rod, and a concrete pouring opening communicated with the concrete pouring channel is formed in the drill bit; the drilling rod overcoat has rotary joint, rotary joint includes fixed part and rotating part, the rotating part is followed the drilling rod and is rotated, and outside trachea is connected with the fixed part, and inside trachea is connected with the rotating part, and inside trachea distributes around the drilling rod, and outside origin is given the drill bit air feed after through outside trachea, rotary joint and inside trachea in proper order. The principle of the utility model is as follows: set up the trachea outside the drilling rod, the drilling rod hole sets up to concrete filling channel, and drilling is accomplished the back, can pour the concrete to downthehole through concrete filling channel when promoting the drilling rod, and drilling and pouring integrative construction like this shorten construction cycle, reduce construction cost.
Description
Technical Field
The utility model relates to the technical field of engineering pile machines, in particular to a cluster pouring down-the-hole hammer drilling machine.
Background
The down-the-hole hammer, also called as impactor, is a kind of impact load generating device in the impact rotary drilling, and is widely used in China at present, and it utilizes the energy in the flushing liquid supplied by the slurry pump in the drilling process to directly drive the impact hammer in the hydraulic hammer to form up-and-down reciprocating motion, and continuously apply impact load with certain frequency to the lower drilling tool, thereby realizing the impact rotary drilling. The traditional cluster down-the-hole hammer supplies air through a single air source and then distributes high-pressure air to all drill bits through a distribution chamber in the cluster down-the-hole hammer, for example, a Chinese patent publication No. CN207332750U cluster down-the-hole hammer comprises an outer cover and a joint arranged at the first end of the outer cover, wherein a mounting plate is also arranged in the outer cover, a plurality of impactors are detachably and fixedly arranged on the mounting plate, one end of each impacter is provided with a drill bit, the second end of the outer cover is fixedly provided with a detachable bottom plate, the bottom plate is provided with a plurality of drill bit mounting holes, the drill bits extend out of the drill bit mounting holes, and the tops of the drill bits are not on the same plane; the mounting panel includes roof and upper plate, roof and upper plate set up relatively, still be equipped with the second backup pad between roof and the upper plate, and reserve between roof and the upper plate and have the gas receiver. The cluster down-the-hole hammer can not realize the integrated process of drilling and pouring, and concrete is poured into the hole after the drilling is finished, so that the construction process is complicated, the construction period is long, and the construction cost is high.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a cluster pouring down-the-hole hammer drill which can be used for drilling and pouring integrated construction, shorten the construction period and reduce the construction cost.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a cluster perfusion down-the-hole hammer drill comprises a drill rod, a drill bit arranged at the lower end of the drill rod and a power head arranged at the upper end of the drill rod; the drill rod is of a hollow structure, a concrete pouring channel is formed in the drill rod, and a concrete pouring opening communicated with the concrete pouring channel is formed in the drill bit; the drilling rod overcoat has rotary joint, rotary joint includes fixed part and rotating part, the rotating part is followed the drilling rod and is rotated, and outside trachea is connected with the fixed part, and inside trachea is connected with the rotating part, and inside trachea distributes around the drilling rod, and outside air supply is in proper order through giving the drill bit air feed behind outside trachea, rotary joint and the inside trachea. The principle of the utility model is as follows: set up the trachea outside the drilling rod, the drilling rod hole sets up to concrete filling channel, and drilling is accomplished the back, can pour the concrete to downthehole through concrete filling channel when promoting the drilling rod, and drilling and pouring integrative construction like this shorten construction cycle, reduce construction cost.
As an improvement, the inner air pipes are evenly distributed around the drill rod in a circle.
As an improvement, the rotating part comprises a rotating sleeve sleeved outside the drill rod, a plurality of air outlet holes which are uniformly distributed in the circumferential direction are formed in the bottom surface of the rotating sleeve, the internal air pipe is connected to the air outlet holes, a plurality of air inlet holes which correspond to the air outlet holes one by one are formed in the side surface of the rotating sleeve, and the air inlet holes are communicated with the air outlet holes through air passages; the fixed part is equipped with the bearing including the fixed cover of cover outside the rotating sleeve between fixed cover and the rotating sleeve, form annular air chamber between fixed cover and the rotating sleeve, annular air chamber and inlet port intercommunication, outside trachea and annular air chamber intercommunication.
As an improvement, a sleeve is sleeved outside the drill rod, an inner cavity is formed between the sleeve and the drill rod, and the inner air pipe is arranged in the inner cavity.
Compared with the prior art, the utility model has the following beneficial effects:
set up the trachea outside the drilling rod, the drilling rod hole sets up to concrete filling channel, and drilling is accomplished the back, can pour the concrete to downthehole through concrete filling channel when promoting the drilling rod, and drilling and pouring integrative construction like this shorten construction cycle, reduce construction cost.
Drawings
FIG. 1 is a schematic view of a cluster-charged down-the-hole hammer drill.
Fig. 2 is a cross-sectional view of a drill rod.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in figure 1, the cluster pouring down-the-hole hammer drill comprises a pile frame platform 1, a drill rod 4, a cluster down-the-hole hammer drill bit 5, a power head 3, an upright column guide device 2, an inclined strut pull rod 6 and a high-pressure air source device 7.
As shown in fig. 2, the cluster down-the-hole hammer bit 5 is arranged at the lower end of the drill rod 4, and the power head 3 is arranged at the upper end of the drill rod 4; the drilling rod 4 is hollow structure, and its inside concrete pouring passageway 41 that forms, be equipped with the concrete filling mouth 51 with concrete pouring passageway 41 intercommunication on the drill bit 5, set up the grout pipe in the concrete pouring passageway 41, the concrete is through changing in the grout pipe input drilling, because the hole at drilling is established to the grout pipe, the rotation of drilling rod 4 does not influence the grout pipe, concrete filling mouth 51 can be established at the middle part position of drill bit 5, arranges impacter 52 around the concrete filling mouth 51. The rotary joint 9 is sleeved outside the upper part of the drill rod 4, the rotary joint 9 comprises a fixing part 91 and a rotating part 92, the rotating part 92 rotates along with the drill rod 4, the external air pipe 8 is connected with the fixing part 91, the internal air pipe 42 is connected with the rotating part 92, the internal air pipe 42 is uniformly distributed around the drill rod 4 in a circumferential manner, and the high-pressure air source device 7 supplies air to the drill bit 5 after sequentially passing through the external air pipe 8, the rotary joint 9 and the internal air pipe 42; the rotating part 92 comprises a rotating sleeve sleeved outside the drill rod 4, a plurality of air outlet holes which are uniformly distributed in the circumferential direction are formed in the bottom surface of the rotating sleeve, the internal air pipe 42 is connected to the air outlet holes, a plurality of air inlet holes which correspond to the air outlet holes in a one-to-one mode are formed in the side surface of the rotating sleeve, and the air inlet holes are communicated with the air outlet holes through air passages 921; the fixing part 91 comprises a fixing sleeve sleeved outside the rotating sleeve, a bearing is arranged between the fixing sleeve and the rotating sleeve, an annular air chamber 911 is formed between the fixing sleeve and the rotating sleeve, the annular air chamber 911 is communicated with an air inlet, and the external air pipe 8 is communicated with the annular air chamber 911; a sleeve 43 is sleeved outside the drill rod 4, an inner cavity is formed between the sleeve 43 and the drill rod 4, and the inner air pipe 42 is arranged in the inner cavity.
With the trachea setting outside drilling rod 4, 4 holes of drilling rod set up to concrete pouring channel 41, after the drilling was accomplished, can pour the concrete to downthehole through concrete pouring channel 41 when promoting drilling rod 4, the drilling shortens construction cycle with pouring integrative construction like this, reduces construction cost.
Claims (4)
1. A cluster perfusion down-the-hole hammer drill comprises a drill rod, a drill bit arranged at the lower end of the drill rod and a power head arranged at the upper end of the drill rod; the method is characterized in that: the drill rod is of a hollow structure, a concrete pouring channel is formed in the drill rod, and a concrete pouring opening communicated with the concrete pouring channel is formed in the drill bit; the drilling rod overcoat has rotary joint, rotary joint includes fixed part and rotating part, the rotating part is followed the drilling rod and is rotated, and outside trachea is connected with the fixed part, and inside trachea is connected with the rotating part, and inside trachea distributes around the drilling rod, and outside air supply is in proper order through giving the drill bit air feed behind outside trachea, rotary joint and the inside trachea.
2. The cluster pour down-the-hole hammer drill according to claim 1, wherein: the inner air pipes are uniformly distributed around the drill rod in a circumferential mode.
3. The cluster pour down-the-hole hammer drill according to claim 1, wherein: the rotary part comprises a rotary sleeve sleeved outside the drill rod, a plurality of air outlet holes which are uniformly distributed in the circumferential direction are formed in the bottom surface of the rotary sleeve, the internal air pipe is connected to the air outlet holes, a plurality of air inlet holes which correspond to the air outlet holes one by one are formed in the side surface of the rotary sleeve, and the air inlet holes are communicated with the air outlet holes through air passages; the fixed part is equipped with the bearing including the fixed cover of cover outside the rotating sleeve between fixed cover and the rotating sleeve, form annular air chamber between fixed cover and the rotating sleeve, annular air chamber and inlet port intercommunication, outside trachea and annular air chamber intercommunication.
4. The cluster pour down-the-hole hammer drill according to claim 1, wherein: the drill rod is sleeved with a sleeve, an inner cavity is formed between the sleeve and the drill rod, and the inner air pipe is arranged in the inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121846937.2U CN215595472U (en) | 2021-08-09 | 2021-08-09 | Bundling perfusion down-the-hole hammer drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121846937.2U CN215595472U (en) | 2021-08-09 | 2021-08-09 | Bundling perfusion down-the-hole hammer drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215595472U true CN215595472U (en) | 2022-01-21 |
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ID=79880665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121846937.2U Active CN215595472U (en) | 2021-08-09 | 2021-08-09 | Bundling perfusion down-the-hole hammer drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215595472U (en) |
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2021
- 2021-08-09 CN CN202121846937.2U patent/CN215595472U/en active Active
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