CN203296697U - Down-the-hole hammer - Google Patents
Down-the-hole hammer Download PDFInfo
- Publication number
- CN203296697U CN203296697U CN2013202028002U CN201320202800U CN203296697U CN 203296697 U CN203296697 U CN 203296697U CN 2013202028002 U CN2013202028002 U CN 2013202028002U CN 201320202800 U CN201320202800 U CN 201320202800U CN 203296697 U CN203296697 U CN 203296697U
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- hole hammer
- hole
- centimetre
- hammer body
- bit
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Abstract
The utility model relates to the field of drilling tools, in particular to a down-the-hole hammer. The down-the-hole hammer comprises a center drill bit, an eccentric drill bit and a down-the-hole hammer body, wherein the down-the-hole hammer body is of a cylinder structure, the center drill bit and one end of the down-the-hole hammer body are in coaxial connection, the eccentric drill bit is arranged between the center drill bit and the down-the-hole hammer body, and the eccentric drill bit and the down-the-hole hammer body are arranged in a coaxial mode. The length of the down-the-hole hammer body is 480-490cm, the diameter of the center drill bit is 180-185cm, the diameter of the eccentric drill bit is 180-235cm, and the distance between the down-the-hole hammer body and the center drill bit is 75-85cm. According to the down-the-hole hammer, due to the fact that the center drill bit and the eccentric drill bit are of a split structure, when drilling is carried out, the center drill bit carries out advancing drilling, then, the eccentric drill bit carries out broaching operation after the center drill bit works, the center drill bit and the eccentric drill bit can carry out relatively independent work, and the situation that the deviation of the drilled hole is within the range of technological requirements can be ensured.
Description
Technical field
The utility model relates to the boring tool field, in particular to a kind of down-hole hammer.
Background technology
Down-hole hammer is requisite instrument in probing work.Down-hole hammer comprises center bit and off-balance bit, the center bit punching that is used for advancing, and off-balance bit is in order to reaming after the center bit punching.At present, the center bit of the down-hole hammer in association area and off-balance bit are the integral type structure, and in drilling process, center bit and off-balance bit interact like this, easily cause the slope deviation in hole excessive, do not reach technological requirement.
The utility model content
The purpose of this utility model is to provide a kind of down-hole hammer, to solve the above problems.
Provide in embodiment of the present utility model
A kind of down-hole hammer comprises: center bit, off-balance bit, down-hole hammer body;
Described down-hole hammer body is column structure, the coaxial connection of an end of described center bit and described down-hole hammer body;
Described off-balance bit is between described center bit and described down-hole hammer body, and described off-balance bit and the coaxial setting of described down-hole hammer body;
The length of described down-hole hammer body is 480-490 centimetre, and the diameter of described center bit is 180-185 centimetre, and the diameter of described off-balance bit is 180-235 centimetre, and the distance between described down-hole hammer body and described center bit is 75-85 centimetre.
The down-hole hammer of the utility model above-described embodiment, center bit and off-balance bit are split-type structural, like this when boring, after center bit advances boring, off-balance bit carries out reaming work again after center bit, both relatively independent work, can guarantee that like this deviation in hole is in the technological requirement scope.
Description of drawings
Fig. 1 shows the down-hole hammer structural representation of the utility model embodiment;
The structural representation when off-balance bit that Fig. 2 shows the utility model embodiment opens;
The structural representation when off-balance bit that Fig. 3 shows the utility model embodiment is packed up.
The specific embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
The utility model embodiment provides a kind of down-hole hammer, as shown in Figure 1, Figure 2 and Figure 3, comprising: center bit 3, off-balance bit 2, down-hole hammer body 1; Down-hole hammer body 1 is column structure, the coaxial connection of an end of center bit 3 and down-hole hammer body 1; Off-balance bit 2 is between center bit 3 and down-hole hammer body 1, and off-balance bit 2 and the coaxial setting of down-hole hammer body 1.The length of down-hole hammer body is 480-490 centimetre, and the diameter of center bit is 180-185 centimetre, and the diameter of off-balance bit is 180-235 centimetre, and the distance between down-hole hammer body and center bit is 75-85 centimetre.The down-hole hammer of the present embodiment, center bit 3 and off-balance bit 2 are split-type structural, like this when boring, after center bit 3 advances boring, off-balance bit 2 carries out reaming work again after center bit 3, both relatively independent work can guarantee that like this deviation in hole is in the technological requirement scope.
In addition, the present embodiment, by the restriction of the diameter of the length to the down-hole hammer body and center bit and off-balance bit, compares rationally the length of down-hole hammer and the diameter of drill bit, improves to greatest extent the drilling quality of down-hole hammer.
In the present embodiment, the length of down-hole hammer body is preferably 487 centimetres, and the diameter of center bit is 181 centimetres, and the diameter of off-balance bit is 180-235 centimetre, and the distance between down-hole hammer body and center bit is 85 centimetres.
Wear and tear existing drilling tool (as two-piece-dress eccentric hammer, three-piece eccentric hammer etc.) overweight, too high to the torsional forces requirement of rig, application life is shorter.In the present embodiment, off-balance bit 2 comprises that 8, four eccentric spread sheets 8 of four eccentric spread sheets are symmetrical arranged about the axis of off-balance bit 2, and every eccentric spread sheet 8 is connected by connector with down-hole hammer body 1, as shown in Figure 2.Off-balance bit 2 is stressed when reaming so evenly can not cause the slope deviation in hole excessive, guarantees the required precision of reaming; And it is overweight to avoid wearing and tearing, and extends the application life of off-balance bit 2.
In the present embodiment, the length of eccentric spread sheet is 90-92 centimetre, and the thickness of described eccentric spread sheet is 75-85 centimetre.The length of the preferred eccentric spread sheet of the present embodiment is 91 centimetres, and the thickness of described eccentric spread sheet is 80 centimetres.
In addition, compare existing down-hole hammer, the down-hole hammer in the present embodiment is due to center bit 3 and off-balance bit open shop in 2 minutes, thereby to the torsional forces of rig, requires lower.
In the present embodiment, connector can be bearing pin 7, bolt etc., and the present embodiment is preferably bearing pin 7, dismantles so more convenient.Bearing pin 7 is along the axis direction setting that is parallel to described center bit 3, and the two ends of bearing pin 7 are fixedly connected with center bit 3 with down-hole hammer body 1 respectively.The length of bearing pin is 220-230 centimetre, and the diameter of described bearing pin is 38-42 centimetre.The length of the preferred bearing pin of the present embodiment is 224 centimetres, and the diameter of described bearing pin is 39.5 centimetres
In the present embodiment, every eccentric spread sheet 8 is provided with first through hole 13, and every eccentric spread sheet 8 is connected connection by the first through hole 13 with bearing pin.So in use, eccentric spread sheet 8 can be rotated around bearing pin 7.The diameter of the first through hole is 38-42 centimetre, and the diameter of preferred the first through hole of the present embodiment is 40 centimetres.
In the present embodiment, when being respectively arranged with reamer 12 and reaming, the two ends of eccentric spread sheet 8 are used for the fixing fixed part 14 of eccentric spread sheet 8.During reaming, fixed part 14 is positioned at the side of eccentric spread sheet 8 near the axis of down-hole hammer body 1, and reamer 12 is positioned at the side of eccentric spread sheet 8 away from the axis of down-hole hammer body 1.Down-hole hammer body 1 is provided with projection 10 near an end of described off-balance bit 2, and described fixed part 14 places of every described eccentric spread sheet 8 are provided with breach 11.
In the present embodiment, the diameter of projection is 64-66 centimetre, and the height of described projection is 19-21 centimetre, and the diameter of the preferred projection of the present embodiment is 65 centimetres, and the height of described projection is 20 centimetres.Breach is 1/4 circular configuration, and the diameter of breach is 64-66 centimetre, and the degree of depth of breach is 23-25 centimetre, and the width of breach is 45-50 centimetre, and the diameter of the preferred breach of the present embodiment is 65 centimetres, and the degree of depth of breach is 25 centimetres, and the width of breach is 47 centimetres.
Off-balance bit 2 has and opens and pack up two states.When the bores are being drilled, off-balance bit 2 is in open configuration, and the diameter of off-balance bit is 234-235 centimetre, as shown in Figure 2; When stopping holing, off-balance bit 2 is in collapsed state, and the diameter of off-balance bit is 179-180 centimetre, as shown in Figure 3.
When the bores are being drilled, down-hole hammer body 1 rotates, off-balance bit 2 is in open configuration, and four eccentric spread sheets 8 rely on centrifugal force to open, and eccentric spread sheet 8 is rotated around bearing pin 7, thereby make reamer 12 forward outer circumferential side to, four breach 11 turn to interior all sides, and the diameter of off-balance bit is 234 centimetres, and down-hole hammer body 1 drives projection 10 towards off-balance bit 2 motions, and projection 10 is snapped in the zone of four breach, 11 formation, thereby drive four eccentric spread sheet 8 reamings;
When stopping holing, down-hole hammer body 1 drives projection 10 along away from the direction of off-balance bit 2, moving, projection 10 is left the zone that four breach 11 form, then down-hole hammer body 1 counter-rotation, thereby make four eccentric spread sheets 8 rely on centrifugal force to shrink, eccentric spread sheet 8 is rotated around bearing pin 7, thereby reamer 12 and breach 11 are arranged along the circumferencial direction of off-balance bit 2, and the diameter of off-balance bit is 180 centimetres.
In the present embodiment, center bit 3 is provided with lateral pin 9, and the axis of lateral pin 9 is vertical with the axis of center bit 3, and lateral pin 9 to pass bearing pin 7 fixing.Bearing pin 7 is fixedly connected with center bit 3.Bearing pin 7 is on-fixed with the junction of down-hole hammer body 1, and down-hole hammer body 1 can move a bit of distance along bearing pin 7 like this, and projection 10 is snapped in the zone of four described breach 11 formation.Lateral pin is three sections multidiameter structures, and the diameter of three sections multidiameters is respectively 13-15 centimetre, 19-21 centimetre, 21-23 centimetre, and the diameter that the present embodiment is preferably three sections multidiameters is respectively 14 centimetres, 20 centimetres, 22 centimetres.
In the present embodiment, the axis place of down-hole hammer body 1 is provided with in order to the second through hole 4 that ventilates, and center bit 3 is provided with the third through-hole 5 in order to ventilate.The two ends of third through-hole 5 lay respectively at center bit 3 near a side of down-hole hammer bodies 1 and center bit 3 side away from down-hole hammer body 1; The side and second through hole 4 that are positioned at center bit 3 close down-hole hammer bodies 1 of third through-hole 5 align.When boring, down-hole hammer is connected with outside air compressor like this, and gas is blown in third through-hole 5 via the second through hole 4, with the rock that will be drilled to powder, blows out outside boring.
In the present embodiment, the diameter of the second through hole is 30-32 centimetre, and the diameter of preferred the second through hole of the present embodiment is 31.5 centimetres.
In the present embodiment, the end face away from down-hole hammer body 1 of center bit 3 is provided with alloy projection 6, to strengthen boring power when holing.
In the present embodiment, down-hole hammer body 1 is provided with fixed axis 15 away from a side of center bit, whole down-hole hammer is fixed on rig when drilling.Fixed axis 15 in the present embodiment is 307 centimetres.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a down-hole hammer, is characterized in that, comprising: center bit, off-balance bit, down-hole hammer body;
Described down-hole hammer body is column structure, the coaxial connection of an end of described center bit and described down-hole hammer body;
Described off-balance bit is between described center bit and described down-hole hammer body, and described off-balance bit and the coaxial setting of described down-hole hammer body;
The length of described down-hole hammer body is 480-490 centimetre, and the diameter of described center bit is 180-185 centimetre, and the diameter of described off-balance bit is 180-235 centimetre, and the distance between described down-hole hammer body and described center bit is 75-85 centimetre.
2. down-hole hammer according to claim 1, is characterized in that, described off-balance bit comprises four eccentric spread sheets;
Four described eccentric spread sheets are symmetrical arranged about the axis of described off-balance bit;
Every described eccentric spread sheet is connected by connector with described down-hole hammer body;
The length of described eccentric spread sheet is 90-92 centimetre; The thickness of described eccentric spread sheet is 75-85 centimetre.
3. down-hole hammer according to claim 2, is characterized in that, described connector is bearing pin;
The length of described bearing pin is 220-230 centimetre, and the diameter of described bearing pin is 38-42 centimetre.
4. down-hole hammer according to claim 3, is characterized in that, the two ends of described bearing pin are fixedly connected with described center bit with described down-hole hammer body respectively;
Every described eccentric spread sheet is provided with first through hole, and described eccentric spread sheet is passed through described the first through hole and is connected the bearing pin connection;
The diameter of described the first through hole is 38-42 centimetre.
5. down-hole hammer according to claim 4, is characterized in that, described bearing pin is along the axis direction setting that is parallel to described center bit.
6. down-hole hammer according to claim 5, is characterized in that, described center bit is provided with lateral pin, and the axis of described lateral pin is vertical with the axis of described center bit;
Described lateral pin passes described bearing pin and fixes;
Described lateral pin is three sections multidiameter structures, and the diameter of three sections described multidiameters is respectively 13-15 centimetre, 19-21 centimetre, 21-23 centimetre.
7. down-hole hammer according to claim 2, is characterized in that, is used for the fixed part that described eccentric spread sheet is fixing when the two ends of described eccentric spread sheet are respectively arranged with reamer and reaming;
During reaming, described fixed position is in the side of described eccentric spread sheet near the axis of described down-hole hammer body, and described reamer is positioned at the side of described eccentric spread sheet away from the axis of described down-hole hammer body.
8. down-hole hammer according to claim 7, is characterized in that, described down-hole hammer body is provided with projection near an end of described off-balance bit, and the described fixed part place of every described eccentric spread sheet is provided with breach;
The diameter of described projection is 64-66 centimetre, and the height of described projection is 19-21 centimetre;
Described breach is 1/4 circular configuration, and the diameter of described breach is 64-66 centimetre, and the degree of depth of described breach is 23-25 centimetre, and the width of described breach is 45-50 centimetre.
9. down-hole hammer according to claim 1, is characterized in that, the axis place of described down-hole hammer body is provided with the second through hole in order to ventilate; The diameter of described the second through hole is 30-32 centimetre;
Described center bit is provided with the third through-hole in order to ventilate;
The two ends of described third through-hole lay respectively at described center bit near a side of described down-hole hammer body and the described center bit side away from described down-hole hammer body;
The side and described second through hole that are positioned at the close described down-hole hammer body of described center bit of described third through-hole align.
10. down-hole hammer according to claim 1, is characterized in that, the end face away from described down-hole hammer body of described center bit is provided with the alloy projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202028002U CN203296697U (en) | 2013-04-19 | 2013-04-19 | Down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202028002U CN203296697U (en) | 2013-04-19 | 2013-04-19 | Down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296697U true CN203296697U (en) | 2013-11-20 |
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ID=49572715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202028002U Expired - Fee Related CN203296697U (en) | 2013-04-19 | 2013-04-19 | Down-the-hole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203296697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195361A (en) * | 2013-04-19 | 2013-07-10 | 耿晓西 | Down-hole hammer |
-
2013
- 2013-04-19 CN CN2013202028002U patent/CN203296697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195361A (en) * | 2013-04-19 | 2013-07-10 | 耿晓西 | Down-hole hammer |
| CN103195361B (en) * | 2013-04-19 | 2015-11-04 | 耿晓西 | Down-hole hammer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20160419 |