CN113250604A - Self-distributing cluster type pneumatic down-the-hole hammer set - Google Patents
Self-distributing cluster type pneumatic down-the-hole hammer set Download PDFInfo
- Publication number
- CN113250604A CN113250604A CN202110727450.0A CN202110727450A CN113250604A CN 113250604 A CN113250604 A CN 113250604A CN 202110727450 A CN202110727450 A CN 202110727450A CN 113250604 A CN113250604 A CN 113250604A
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- CN
- China
- Prior art keywords
- air
- gas distribution
- adjusting
- hole hammer
- seat
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a self-gas distribution cluster type pneumatic down-the-hole hammer set which comprises a gas distribution chamber, a gas distribution assembly and a plurality of down-the-hole hammer bodies, wherein the gas distribution assembly comprises a plurality of floating valves, and the floating valves correspond to the down-the-hole hammer bodies one to one; the floating valve comprises a valve seat, an air passing channel and an adjusting channel penetrate through the valve seat, an adjusting piston and a floating valve needle are embedded in the adjusting channel in a sliding mode, and the floating valve needle moves forwards and backwards to adjust the air outlet opening under the action of air pressure. The invention has the obvious effects that the pressure-stabilizing distribution valve mechanism is adopted to replace the traditional integral distribution valve mechanism, the opening degree of the outlet of the distribution mechanism can be self-regulated under the set working pressure under the conditions of alternative hardness and softness of rocks and variable load, the pressure-stabilizing 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 set is reduced, the regular movement of each sub-hammer is ensured, and the drilling efficiency and the steering 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 construction pile foundation construction, water wells, coal mines and the like. At present, the cluster type pneumatic down-the-hole is mainly used for drilling construction of vertical wells in the fields, the application is less in the aspect of directional drilling construction of highly deviated wells, mainly because the cluster type pneumatic down-the-hole hammer adopts an integral distribution mode, when drilling meets complex rock strata, the differences of performance parameters such as impact frequency, impact speed and air consumption of each sub-hammer of a cluster type pneumatic down-the-hole hammer set are large, the problems of large vibration, difficult directional drilling and direction control, short service life of drilling tools and the like occur, and the traditional cluster type pneumatic down-the-hole cannot meet the directional drilling construction of large-diameter and long-distance hard rocks.
Disclosure of Invention
The invention provides a cluster type pneumatic down-the-hole hammer set for automatically distributing air according to the load of each down-the-hole hammer, which has the following specific scheme:
the utility model provides a from pneumatic down-the-hole hammer of distribution air beam set, includes air 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, air distribution chamber is to every down-the-hole hammer body air feed, its key lies in:
a gas distribution assembly is arranged between the gas distribution chamber and the hammer body;
the gas distribution assembly comprises a plurality of floating valves, and the floating valves correspond to the down-the-hole hammer bodies one to one;
the floating valve comprises a valve seat, 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 an adjusting channel penetrate through the valve seat, the air passing channel is communicated with the air inlet and the air outlet, the adjusting channel is communicated with the air inlet and the air outlet, an adjusting piston is embedded in the adjusting channel in a sliding mode and connected with a floating valve needle, and the free end of the floating valve needle faces towards and extends into the air outlet;
the adjusting piston drives the floating valve needle to advance and retreat in the air outlet under the action of air pressure, so that the air outlet opening degree of the air outlet is adjusted.
Drawings
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic view of the orientation of the debris removal channel 31 a;
FIG. 4 is a schematic view showing the assembly of the air supply pipe 5 and the chip evacuation pipe 35;
FIG. 5 is a schematic cross-sectional view of the float valve 21;
fig. 6 is a schematic perspective view of the float valve 21;
fig. 7 is a sectional view schematically showing the air intake pipe assembly 4.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1-7, a self-gas distribution cluster type pneumatic down-the-hole hammer set comprises a gas distribution chamber 1, a gas distribution assembly 2 and a hammer body part 3 which are arranged in sequence,
the hammer body 3 comprises an installation seat 31, the installation seat 31 is cylindrical, a plurality of down-the-hole hammer bodies 32 which are parallel to each other are arranged in the installation seat 31, the down-the-hole hammer bodies 32 axially penetrate through the installation 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 connector 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 correspond to the down-the-hole hammer bodies 32 one by one; the fixing seat 23 is fixed in the air distribution mounting cylinder 22, the fixing seat 23 is in a round cake shape, the fixing seat 23 is located 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 gas distribution installation cylinder is characterized by further comprising a gas distribution cover, the gas distribution cover is arranged at the end portion of the gas distribution installation cylinder 22 and fixed with the gas distribution installation cylinder, the gas distribution chamber 1 is formed between the gas distribution cover and the fixing seat 23, the gas distribution cover is connected with a gas supply pipe 5, and the gas supply pipe 5 enters the gas distribution cover and is communicated with the gas distribution chamber 1.
At least one chip removal channel 31a axially penetrates through the mounting seat 31, the 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 the discharging end of the chip removal channel 31a and the air inlet joint 34 are positioned at the same end of the mounting seat 31;
wear to be equipped with chip removal pipe 35 on the fixing base 23, the one end of chip removal pipe 35 pass through the pipeline with the discharge end switch-on of chip removal passageway 31a, the other end of chip removal pipe 35 outwards stretches out the distribution cover, 5 loops of air supply pipe are in outside chip removal pipe 35.
In the present embodiment, the float 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 float valve 21 faces the air distribution chamber 1 and is communicated with the air distribution chamber, the air outlet 2b faces the hammer body 3, and the air outlet 2b is connected with the corresponding air inlet joint 34 through an air inlet pipe assembly 4; an air passing channel 2c and an adjusting channel 2d are further penetrated through the valve seat 211, the air passing channel 2c communicates the air inlet 2a with the air outlet 2b, the adjusting channel 2d is a circular hole, a plurality of air passing channels 2c are arranged around the adjusting channel 2d, an adjusting piston 212 is embedded in the adjusting channel 2d in a sliding manner, the adjusting piston 212 is connected with a floating valve needle 213, and the free end of the floating valve needle 213 faces and extends into the air outlet 2 b;
the adjusting piston 212 is driven by the air pressure to move the floating needle 213 forward and backward in the air outlet 2b, so as to adjust the air outlet opening of the air outlet 2 b.
Specifically, the air outlet 2b comprises a circular hole section and a circular truncated cone hole section, one end of the circular hole section is communicated with the air passing channel 2c and the adjusting channel 2d, the other end of the circular hole section is communicated with a large opening end of the circular truncated cone hole section, and a small opening end of the circular truncated cone hole section is connected with the air inlet joint 34;
an adjusting head 214 is fixed at the free end of the floating valve needle 213, the adjusting head 214 faces the circular truncated cone hole section, and an adjusting surface matched with the inner hole wall of the circular truncated cone hole section is arranged on the adjusting head 214.
A needle return 215 is also provided on the valve seat 211, which needle return 215 acts on the adjusting piston 212 and/or on the floating needle 213 to return them. Specifically, an abutting ring 216 is further fixed in the adjusting passage 2d, the abutting ring 216 is close to the adjusting head 214, the floating needle 213 passes through an 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 return spring is sleeved on the floating needle 213, the return spring abuts against the adjusting piston 212 and the abutting ring 216, and the return spring forms the needle return 215.
The air inlet pipe assembly 4 comprises an air inlet pipe 41, and joints 42 are respectively arranged at two ends of the air inlet pipe 41; the joint 42 comprises a butt joint 421, a locking joint 422 and a retaining joint 423, the butt joint 421 is in a shape of a round pipe, one end of the butt joint 421 is connected to the air inlet pipe 41, the other end of the butt joint 421 is fixedly sleeved with a tightening ring 424, the diameter of the outer ring of the tension ring 424 is larger than that of the outer ring of the butt joint 421, the locking joint 422 is cylindrical, the inner wall of the locking head 422 is provided with threads, one end of the locking head 422 is fixed with a compression ring 425, the diameter of the inner ring of the compression ring 425 is smaller than that of the inner ring of the locking head 422, the locking head 422 is movably sleeved outside the tension ring 424, one end face of the compression ring 425 is attached to one end face of the tension 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 tension ring 424 and the air inlet pipe 41, and the compression ring 425 is located between the tension ring 424 and the retaining head 423;
the gas outlet 2b with correspond on the air inlet joint 34 the locking head 422 is equipped with trachea docking seat 43 respectively, trachea docking seat 43 with docking head 421 docks and leans on tightly, locking head 422 threaded sleeve is established and is corresponded on the trachea docking seat 43, trachea docking seat 43 is the tubulose.
Has the advantages that: the invention adopts the pressure-stabilizing distribution valve mechanism to replace the transmission integral distribution valve mechanism, can self-help regulate the opening degree of the outlet of the valve mechanism under the set working pressure under the conditions of alternating hardness and softness of rocks and variable load, realizes the pressure-stabilizing uniform distribution of the down-the-hole hammer, reduces the difference of the working performance of each sub-hammer of the cluster type pneumatic down-the-hole hammer set, ensures the regular movement of each sub-hammer, and improves the drilling efficiency and the steering precision.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a from pneumatic down-the-hole hammer of distribution of gas cluster formula is organized, includes distribution chamber (1) and hammer body portion (3), hammer body portion (3) are equipped with a plurality of down-the-hole hammer body (32) that are parallel to each other including mount pad (31) in this mount pad (31), the one end of down-the-hole hammer body (32) is connected with drill bit (33), down-the-hole hammer body (32) other end is equipped with air-inlet joint (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) correspond to the down-the-hole hammer bodies (32) one by one;
the floating valve (21) comprises a valve seat (211), the valve seat (211) is provided with an air inlet (2a) and an air outlet (2b), the air inlet (2a) is communicated with the air distribution chamber (1), the air outlet (2b) is connected with an air inlet joint (34), an air passing channel (2c) and an adjusting channel (2d) are further arranged on the valve seat (211) in a penetrating manner, the air passing channel (2c) is communicated with the air inlet (2a) and the air outlet (2b), the adjusting channel (2d) is communicated with the air inlet (2a) and the air outlet (2b), an adjusting piston (212) is embedded in the adjusting channel (2d) in a sliding manner, the adjusting piston (212) is connected with a floating valve needle (213), and the free end of the floating valve needle (213) faces and extends into the air outlet (2 b);
the adjusting piston (212) is acted by air pressure to drive the floating valve needle (213) to move in and out of the air outlet (2b), so that the air outlet opening degree of the air outlet (2b) is adjusted.
2. The self-distributing gas cluster pneumatic down-the-hole hammer set of claim 1, wherein: one end of the air outlet (2b) is communicated with the air passing channel (2c) and the adjusting channel (2d), the other end of the air outlet (2b) is necked, and the free end of the floating valve needle (213) is close to or far away from the necked part of the air outlet (2b) to adjust the air outlet opening degree of the floating valve needle.
3. The self-distributing gas cluster pneumatic down-the-hole hammer set of claim 1, wherein: the air outlet (2b) comprises a round hole section and a circular truncated cone hole section, one end of the round hole section is communicated with the air passing channel (2c) and the adjusting channel (2d), the other end of the round hole section is communicated with the large opening end of the circular truncated cone hole section, and the small opening end of the circular truncated cone 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 an adjusting surface matched with the inner hole wall of the circular truncated cone hole section is arranged on the adjusting head (214).
4. A self-distributing gas cluster pneumatic down-the-hole hammer as set forth in claim 1, 2 or 3, wherein: a needle return element (215) is also arranged on the valve seat (211), wherein the needle return element (215) acts on the adjusting piston (212) and/or the floating needle (213) to return the same.
5. The self-distributing gas cluster pneumatic down-the-hole hammer set of claim 4, wherein: an abutting ring (216) is further fixed in the adjusting channel (2d), 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 return spring is sleeved on the floating valve needle (213), the return spring abuts against the adjusting piston (212) and the abutting ring (216), and the return spring forms the valve needle return piece (215).
6. A self-distributing gas cluster pneumatic down-the-hole hammer as set forth in claim 1, 2 or 3, wherein: the adjusting channel (2d) is a round hole, and a plurality of air passing channels (2c) are arranged around the adjusting channel (2 d).
7. The self-distributing gas cluster pneumatic down-the-hole hammer set of claim 1, wherein: the gas distribution assembly (2) further comprises a gas distribution mounting cylinder (22) and a fixing seat (23), the fixing seat (23) is fixed in the gas distribution mounting cylinder (22), the fixing seat (23) is located at one end of the gas distribution mounting cylinder (22), the other end of the gas distribution mounting cylinder (22) is fixed with the mounting seat (31), the mounting seat (31) is cylindrical, one end of the mounting seat (31) is connected with the gas distribution mounting cylinder (22), the down-the-hole hammer body (32) is axially arranged in the mounting seat (31) in a penetrating mode, and the gas inlet connector (34) extends into the gas distribution mounting cylinder (22);
the fixed seat (23) is in a round cake shape, the floating valve (21) is arranged on the fixed seat (23), an air inlet (2a) of the floating valve (21) faces the air distribution chamber (1), an air outlet (2b) of the floating valve (21) faces the hammer body part (3), and the air outlet (2b) is connected with the corresponding air inlet joint (34) through an air inlet pipe component (4);
the gas distribution device is characterized by further comprising a gas distribution cover, wherein the gas distribution cover is arranged at the end part of the gas distribution mounting cylinder (22) and fixed with the gas distribution mounting cylinder, the gas distribution chamber (1) is formed between the gas distribution cover and the fixing seat (23), the gas distribution cover is connected with a gas supply pipe (5), and the gas supply pipe (5) enters the gas distribution cover and is communicated with the gas distribution chamber (1).
8. The self-distributing cluster pneumatic down-the-hole hammer set of claim 7, wherein: the air inlet pipe assembly (4) comprises an air inlet pipe (41), and joints (42) are respectively arranged at two ends of the air inlet pipe (41);
the joint (42) comprises a butt joint (421), a locking joint (422) and a retaining joint (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), a tensioning ring (424) is fixedly sleeved at the other end of the butt joint (421), the diameter of the outer ring of the tensioning ring (424) is larger than that of the outer ring of the butt joint (421), the locking joint (422) is in a cylindrical shape, threads are arranged on the inner wall of the locking joint (422), a compression ring (425) is fixed at one end of the locking joint (422), the diameter of the inner ring of the compression ring (425) is smaller than that of the inner ring of the locking joint (422), the locking joint (422) is movably sleeved outside the tensioning ring (424), one end face of the compression ring (425) is attached to one end face of the tensioning ring (424), and the retaining joint (423) is sleeved on the butt joint (421), the retaining head (423) is located between the tension ring (424) and the air inlet pipe (41), and the compression ring (425) is located between the tension ring (424) and the retaining head (423);
gas outlet (2b) with correspond on air inlet joint (34) locking head (422) are equipped with trachea butt joint seat (43) respectively, trachea butt joint seat (43) with butt joint (421) butt joint and lean on tightly, locking head (422) threaded sleeve is established and is corresponded on trachea butt joint seat (43), trachea butt joint seat (43) become tubulose.
9. The self-distributing cluster pneumatic down-the-hole hammer set of claim 7, wherein: at least one chip removal channel (31a) axially penetrates through the mounting seat (31), the 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 the discharging end of the chip removal channel (31a) and the air inlet joint (34) are positioned at the same end of the mounting seat (31);
wear to be equipped with chip removal pipe (35) on fixing base (23), the one end of chip removal pipe (35) pass through the pipeline with the discharge end switch-on of chip removal passageway (31a), the other end of chip removal pipe (35) is outwards stretched out the 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 |
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| 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 true CN113250604A (en) | 2021-08-13 |
| CN113250604B CN113250604B (en) | 2023-10-13 |
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| CN113250604B (en) | 2023-10-13 |
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