CN113250604B - Self-air-distribution cluster type pneumatic down-the-hole hammer set - Google Patents
Self-air-distribution cluster type pneumatic down-the-hole hammer set Download PDFInfo
- Publication number
- CN113250604B CN113250604B CN202110727450.0A CN202110727450A CN113250604B CN 113250604 B CN113250604 B CN 113250604B CN 202110727450 A CN202110727450 A CN 202110727450A CN 113250604 B CN113250604 B CN 113250604B
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- Prior art keywords
- air
- seat
- adjusting
- hole hammer
- air inlet
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- 238000009826 distribution Methods 0.000 title claims abstract description 66
- 210000001503 joint Anatomy 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 10
- 230000001105 regulatory effect Effects 0.000 abstract description 16
- 238000005553 drilling Methods 0.000 abstract description 10
- 239000011435 rock Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a self-air-distribution clustered pneumatic down-the-hole hammer set, which comprises an air distribution chamber, an air distribution assembly and a plurality of down-the-hole hammer bodies, wherein the air distribution assembly comprises a plurality of floating valves, and the floating valves are in one-to-one correspondence with the down-the-hole hammer bodies; the floating valve comprises a valve seat, an air passage and an adjusting passage are penetrated through the valve seat, an adjusting piston and a floating valve needle are embedded in the adjusting passage in a sliding manner, and under the action of air pressure, the floating valve needle moves in and out to adjust the air outlet opening. The invention has the remarkable effects that the pressure-stabilizing and flow-distributing valve mechanism is adopted to replace the traditional integral flow-distributing valve mechanism, under the conditions of alternating hardness and changeable load of rock, the opening degree of the outlet of the valve mechanism can be regulated by self under the set working pressure, the pressure-stabilizing and uniform valve distribution of the down-the-hole hammer is realized, the difference of the working performance of each sub-hammer of the cluster pneumatic down-the-hole hammer set is reduced, the regular movement of each sub-hammer is ensured, and the drilling efficiency and the direction control precision are improved.
Description
Technical Field
The invention relates to drilling engineering, in particular to a down-the-hole hammer for drilling.
Background
The cluster type pneumatic down-the-hole hammer set is formed by binding and combining a plurality of single pneumatic down-the-hole hammers, and is widely applied to large-diameter hard rock drilling construction in the aspects of urban pile foundation construction, water wells, coal mines and the like. The cluster type pneumatic down-the-hole hammer is mainly used for drilling construction of vertical wells in the fields, and is less in application in the aspect of directional drilling construction of highly-deviated wells, and mainly because the cluster type pneumatic down-the-hole hammer adopts an integral split distribution mode, when a complex rock stratum is drilled, the impact frequency, the impact speed, the air consumption and other performance parameters of the cluster type pneumatic down-the-hole hammer group are large in variability, the problems of large vibration, difficult directional drilling direction control, short service life of drilling tools and the like occur, and the traditional cluster type pneumatic down-the-hole hammer cannot meet the requirements of large-diameter long-distance hard rock directional drilling construction.
Disclosure of Invention
The invention provides a cluster type pneumatic down-the-hole hammer set capable of automatically distributing gas according to the load of each down-the-hole hammer, which comprises the following specific schemes:
the utility model provides a from pneumatic down-the-hole hammer group of distribution cluster, includes distribution chamber and hammer body portion, hammer body portion includes the mount pad, is equipped with a plurality of down-the-hole hammer bodies that are parallel to each other in this mount pad, the one end of down-the-hole hammer body is connected with the drill bit, the down-the-hole hammer body other end is equipped with air inlet connector, distribution chamber is to every down-the-hole hammer body air feed, its key lies in:
an air distribution assembly is arranged between the air distribution chamber and the hammer body part;
the air distribution assembly comprises a plurality of floating valves, and the floating valves are in one-to-one correspondence with the down-the-hole hammer bodies;
the floating valve comprises a valve seat, wherein the valve seat is provided with an air inlet and an air outlet, the air inlet is communicated with the air distribution chamber, the air outlet is connected with an air inlet joint, an air passing channel and a regulating channel are further penetrated through the valve seat, the air passing channel is communicated with the air inlet and the air outlet, the regulating channel is communicated with the air inlet and the air outlet, a regulating piston is slidably embedded in the regulating channel, the regulating piston is connected with a floating valve needle, and the free end of the floating valve needle faces towards and stretches into the air outlet;
the regulating piston is under the action of air pressure to drive the floating valve needle to advance and retreat in the air outlet, so that the air outlet opening of the air outlet is regulated.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 shows a schematic view of the chip ejection channel 31 a;
FIG. 4 is a schematic view showing the assembly relationship of the gas supply pipe 5 and the chip removing pipe 35;
fig. 5 is a schematic cross-sectional structure of the float valve 21;
fig. 6 is a schematic perspective view of the float valve 21;
fig. 7 is a schematic sectional structure of the intake pipe assembly 4.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1-7, the self-air-distribution clustered pneumatic down-the-hole hammer set comprises an air distribution chamber 1, an air distribution assembly 2 and a hammer body part 3 which are sequentially arranged,
the hammer body 3 comprises a mounting seat 31, the mounting seat 31 is cylindrical, a plurality of down-the-hole hammer bodies 32 which are parallel to each other are arranged in the mounting seat 31, the down-the-hole hammer bodies 32 axially penetrate through the mounting seat 31, one end of each down-the-hole hammer body 32 is connected with a drill bit 33, the other end of each down-the-hole hammer body 32 is provided with an air inlet joint 34, and the air distribution chamber 1 supplies air to each down-the-hole hammer body 32;
the air distribution assembly 2 comprises an air distribution mounting cylinder 22, a fixed seat 23 and a plurality of floating valves 21, wherein the floating valves 21 are in one-to-one correspondence with the down-the-hole hammer bodies 32; the fixed seat 23 is fixed in the air distribution mounting cylinder 22, the fixed seat 23 is in a shape of a round cake, the fixed seat 23 is positioned at one end of the air distribution mounting cylinder 22, the other end of the air distribution mounting cylinder 22 is connected with one end of the mounting seat 31, and the air inlet joint 34 extends into the air distribution mounting cylinder 22; the floating valve 21 is arranged on the fixed seat 23;
the air distribution device further comprises an air distribution cover, wherein the air distribution cover is arranged at the end part of the air distribution mounting cylinder 22 and is fixed with the end part of the air distribution mounting cylinder, the air distribution chamber 1 is formed between the air distribution cover and the fixed seat 23, the air distribution cover is connected with an air supply pipe 5, and the air supply pipe 5 enters the air distribution cover and is communicated with the air distribution chamber 1.
At least one chip removal channel 31a axially penetrates through the mounting seat 31, a feeding end of the chip removal channel 31a and the drill bit 33 are positioned at the same end of the mounting seat 31, and a discharging end of the chip removal channel 31a and the air inlet connector 34 are positioned at the same end of the mounting seat 31;
the chip removing pipe 35 is arranged on the fixing seat 23 in a penetrating way, one end of the chip removing pipe 35 is communicated with the discharge end of the chip removing channel 31a through a pipeline, the other end of the chip removing pipe 35 extends out of the air distribution cover, and the air supply pipe 5 is movably sleeved outside the chip removing pipe 35.
In this embodiment, the floating valve 21 includes a valve seat 211, the valve seat 211 is provided with an air inlet 2a and an air outlet 2b, the air inlet 2a of the floating valve 21 faces the air distribution chamber 1 and is communicated with the air distribution chamber, the air outlet 2b faces the hammer 3, and the air outlet 2b is connected with the corresponding air inlet joint 34 through an air inlet pipe assembly 4; the valve seat 211 is also penetrated with an air passing channel 2c and a regulating channel 2d, the air passing channel 2c connects the air inlet 2a with the air outlet 2b, the regulating channel 2d is a round hole, a plurality of the air passing channels 2c are arranged around the regulating channel 2d, a regulating piston 212 is slidably embedded in the regulating channel 2d, the regulating piston 212 is connected with a floating valve needle 213, and the free end of the floating valve needle 213 faces towards and stretches into the air outlet 2b;
the regulating piston 212 is under the action of air pressure to drive the floating valve needle 213 to advance and retreat in the air outlet 2b, so as to regulate the air outlet opening of the air outlet 2 b.
Specifically, the air outlet 2b includes a circular hole section and a circular truncated cone hole section, one end of the circular hole section is connected with the air passing channel 2c and the adjusting channel 2d, the other end of the circular hole section is connected with the large mouth end of the circular truncated cone hole section, and the small mouth end of the circular truncated cone hole section is connected with the air inlet connector 34;
the free end of the floating valve needle 213 is fixed with an adjusting head 214, the adjusting head 214 faces the circular truncated cone hole section, and an adjusting surface which is adapted to the inner wall of the circular truncated cone hole section is arranged on the adjusting head 214.
A needle return element 215 is also provided on the valve seat 211, which needle return element 215 acts on the adjusting piston 212 and/or the floating needle 213 to return it. Specifically, an abutment ring 216 is further fixed in the adjusting channel 2d, the abutment ring 216 is close to the adjusting head 214, the floating valve needle 213 passes through the inner ring of the abutment ring 216, the diameter of the adjusting head 214 is larger than that of the inner ring of the abutment ring 216, a return spring is sleeved on the floating valve needle 213, the return spring abuts against the adjusting piston 212 and the abutment ring 216, and the return spring forms the valve needle return element 215.
The air inlet pipe assembly 4 comprises an air inlet pipe 41, and connectors 42 are respectively arranged at two ends of the air inlet pipe 41; the connector 42 comprises a butt joint 421, a locking head 422 and a retaining head 423, the butt joint 421 is in a circular tube shape, one end of the butt joint 421 is connected with the air inlet pipe 41, the other end of the butt joint 421 is sleeved with a tensioning ring 424, the outer ring diameter of the tensioning ring 424 is larger than the outer ring diameter of the butt joint 421, the locking head 422 is in a tube shape, threads are arranged on the inner wall of the locking head 422, a clamping ring 425 is fixed at one end of the locking head 422, the inner ring diameter of the clamping ring 425 is smaller than the inner ring diameter of the locking head 422, the locking head 422 is movably sleeved outside the tensioning ring 424, one end face of the clamping ring 425 is attached to one end face of the tensioning ring 424, the retaining head 423 is sleeved on the butt joint 421 in a threaded manner, the retaining head 423 is located between the tensioning ring 424 and the air inlet pipe 41, and the clamping ring 425 is located between the tensioning ring 424 and the retaining head 423;
the air outlet 2b and the air inlet connector 34 are respectively provided with an air pipe butt joint seat 43 corresponding to the locking head 422, the air pipe butt joint seat 43 is in butt joint with the butt joint connector 421 and is close to the butt joint connector 421, the locking head 422 is sleeved on the corresponding air pipe butt joint seat 43 in a threaded mode, and the air pipe butt joint seat 43 is tubular.
The beneficial effects are that: the invention adopts the stable pressure distribution valve mechanism to replace the transmission integral distribution valve mechanism, under the conditions of alternating rock hardness and variable load, the opening degree of the outlet of the valve mechanism can be regulated by self under the set working pressure, the stable pressure uniform distribution of the down-the-hole hammer is realized, the difference of the working performance of each sub-hammer of the cluster pneumatic down-the-hole hammer group is reduced, the regular movement of each sub-hammer is ensured, and the drilling efficiency and the steering precision are improved.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a from pneumatic down-the-hole hammer group of distribution bundling, includes distribution chamber (1) and hammer block portion (3), hammer block portion (3) are including mount pad (31), are equipped with a plurality of down-the-hole hammer bodies (32) that are parallel to each other in this mount pad (31), the one end of down-the-hole hammer body (32) is connected with drill bit (33), the down-the-hole hammer body (32) other end is equipped with air inlet connector (34), distribution chamber (1) is to every down-the-hole hammer body (32) air feed, its characterized in that:
a gas distribution assembly (2) is arranged between the gas distribution chamber (1) and the hammer body part (3);
the air distribution assembly (2) comprises a plurality of floating valves (21), and the floating valves (21) are in one-to-one correspondence with the down-the-hole hammer bodies (32);
the floating valve (21) comprises a valve seat (211), the valve seat (211) is provided with an air inlet (2 a) and an air outlet (2 b), the air inlet (2 a) is communicated with the air distribution chamber (1), the air outlet (2 b) is connected with an air inlet joint (34), an air passing channel (2 c) and an adjusting channel (2 d) are further penetrated through the valve seat (211), the air passing channel (2 c) is communicated with the air inlet (2 a) and the air outlet (2 b), the adjusting channel (2 d) is communicated with the air inlet (2 a) and the air outlet (2 b), an adjusting piston (212) is embedded in the adjusting channel (2 d) in a sliding mode, the adjusting piston (212) is connected with a floating valve needle (213), and the free end of the floating valve needle (213) faces towards and stretches into the air outlet (2 b);
the adjusting piston (212) is under the action of air pressure and drives the floating valve needle (213) to advance and retreat in the air outlet (2 b), so that the air outlet opening of the air outlet (2 b) is adjusted;
the air distribution assembly (2) further comprises an air distribution installation cylinder (22) and a fixing seat (23), the fixing seat (23) is fixed in the air distribution installation cylinder (22), the fixing seat (23) is positioned at one end of the air distribution installation cylinder (22), the other end of the air distribution installation cylinder (22) is fixed with the installation seat (31), the installation seat (31) is cylindrical, one end of the installation seat (31) is connected with the air distribution installation cylinder (22), the down-the-hole hammer body (32) axially penetrates through the installation seat (31), and the air inlet joint (34) stretches into the air distribution installation cylinder (22);
the fixed seat (23) is in a cake shape, the floating valve (21) is arranged on the fixed seat (23), an air inlet (2 a) of the floating valve (21) faces the air distribution chamber (1), an air outlet (2 b) of the floating valve (21) faces the hammer body (3), and the air outlet (2 b) is connected with the corresponding air inlet joint (34) through an air inlet pipe assembly (4);
the air distribution device is characterized by further comprising an air distribution cover, wherein the air distribution cover is arranged at the end part of the air distribution mounting cylinder (22) and is fixed with the end part of the air distribution mounting cylinder, an air distribution chamber (1) is formed between the air distribution cover and the fixed seat (23), the air distribution cover is connected with an air supply pipe (5), and the air supply pipe (5) enters the air distribution cover and is communicated with the air distribution chamber (1).
2. The self-distributing clustered pneumatic down-the-hole hammer set of claim 1, wherein: one end of the air outlet (2 b) is communicated with the air passing channel (2 c) and the adjusting channel (2 d), the other end of the air outlet (2 b) is contracted, and the free end of the floating valve needle (213) is close to or far away from the contracted part of the air outlet (2 b) to adjust the air outlet opening.
3. The self-distributing clustered pneumatic down-the-hole hammer set of claim 1, wherein: the air outlet (2 b) comprises a round hole section and a round platform hole section, one end of the round hole section is communicated with the air passing channel (2 c) and the adjusting channel (2 d), the other end of the round hole section is communicated with the large opening end of the round platform hole section, and the small opening end of the round platform hole section is connected with the air inlet joint (34);
the free end of the floating valve needle (213) is fixed with an adjusting head (214), the adjusting head (214) faces the circular truncated cone hole section, and the adjusting head (214) is provided with an adjusting surface which is matched with the inner hole wall of the circular truncated cone hole section.
4. A self-distributing clustered pneumatic down-the-hole hammer set as defined in claim 2 or 3, wherein: a valve needle return element (215) is also provided on the valve seat (211), wherein the valve needle return element (215) acts on the adjusting piston (212) and/or the floating valve needle (213) to return the same.
5. The self-distributing clustered pneumatic down-the-hole hammer set of claim 4, wherein: an abutting ring (216) is further fixed in the adjusting channel (2 d), the abutting ring (216) is close to the adjusting head (214), the floating valve needle (213) penetrates through the inner ring of the abutting ring (216), the diameter of the adjusting head (214) is larger than that of the inner ring of the abutting ring (216), a reset spring is sleeved on the floating valve needle (213), and the reset spring abuts against the adjusting piston (212) and the abutting ring (216), and the reset spring forms a valve needle reset piece (215).
6. A self-distributing clustered pneumatic down-the-hole hammer set as defined in claim 1, 2 or 3, wherein: the adjusting channel (2 d) is a round hole, and a plurality of air passing channels (2 c) are arranged around the adjusting channel (2 d).
7. The self-distributing clustered pneumatic down-the-hole hammer set of claim 6, wherein: the air inlet pipe assembly (4) comprises an air inlet pipe (41), and connectors (42) are respectively arranged at two ends of the air inlet pipe (41);
the connector (42) comprises a butt joint (421), a locking head (422) and a retaining head (423), wherein the butt joint (421) is in a circular tube shape, one end of the butt joint (421) is connected with the air inlet pipe (41), the other end of the butt joint (421) is sleeved with a tightening ring (424), the outer ring diameter of the tightening ring (424) is larger than that of the butt joint (421), the locking head (422) is in a tube shape, threads are arranged on the inner wall of the locking head (422), one end of the locking head (422) is fixedly provided with a tightening ring (425), the inner ring diameter of the tightening ring (425) is smaller than that of the locking head (422), the locking head (422) is movably sleeved outside the tightening ring (424), one end face of the tightening ring (425) is attached to one end face of the tightening ring (424), the retaining head (423) is sleeved on the butt joint (421), the retaining head (423) is positioned between the tightening ring (424) and the air inlet pipe (41), and the retaining head (423) is positioned between the tightening ring (41);
the air outlet (2 b) and the air inlet connector (34) are respectively provided with an air pipe butt joint seat (43) corresponding to the locking head (422), the air pipe butt joint seat (43) is in butt joint with the butt joint connector (421) and is close to the butt joint seat, the locking head (422) is sleeved on the corresponding air pipe butt joint seat (43) in a threaded mode, and the air pipe butt joint seat (43) is in a tubular shape.
8. The self-distributing clustered pneumatic down-the-hole hammer set of claim 7, wherein: at least one chip removal channel (31 a) is axially penetrated in the mounting seat (31), a feeding end of the chip removal channel (31 a) and the drill bit (33) are positioned at the same end of the mounting seat (31), and a discharging end of the chip removal channel (31 a) and the air inlet joint (34) are positioned at the same end of the mounting seat (31);
chip removal pipe (35) wears to be equipped with on fixing base (23), chip removal pipe (35) one end pass through the pipeline with the discharge end of chip removal passageway (31 a) is put through, the other end of chip removal pipe (35) outwards stretches out the gas distribution cover, air supply pipe (5) loop is in outside chip removal pipe (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727450.0A CN113250604B (en) | 2021-06-29 | 2021-06-29 | Self-air-distribution cluster type pneumatic down-the-hole hammer set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727450.0A CN113250604B (en) | 2021-06-29 | 2021-06-29 | Self-air-distribution cluster type pneumatic down-the-hole hammer set |
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| CN113250604A CN113250604A (en) | 2021-08-13 |
| CN113250604B true CN113250604B (en) | 2023-10-13 |
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| CN113250604A (en) | 2021-08-13 |
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