CN201620757U - Valveless single-cylinder high-efficiency down-the-hole hammer - Google Patents
Valveless single-cylinder high-efficiency down-the-hole hammer Download PDFInfo
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- CN201620757U CN201620757U CN2010201243756U CN201020124375U CN201620757U CN 201620757 U CN201620757 U CN 201620757U CN 2010201243756 U CN2010201243756 U CN 2010201243756U CN 201020124375 U CN201020124375 U CN 201020124375U CN 201620757 U CN201620757 U CN 201620757U
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Abstract
A valveless single-cylinder high-efficiency down-the-hole hammer comprises a front joint, a rear joint, a check valve and a drilling bit, wherein a hollow channel is disposed in the rear joint; a piston is arranged in the cylinder; an air distribution rod is matched with the piston and is integrated with an air inlet base; the piston is matched with a guide sleeve; an air supply chamber is arranged in the piston; a front air chamber and a rear air chamber are respectively formed at two ends of the piston; the front air chamber is communicated with a channel between the piston and an annular groove of the cylinder, and is communicated with a central hole of the drilling bit; a second exhaust hole communicated with the air supply chamber is formed on the piston; an air groove is formed on the piston surface; and the air groove is communicated with a first exhaust hole on the piston. The air distribution rod is integrated with the air inlet base to simplify the structure and achieve flexible connection with the rear joint so as to reduce vibration. The valveless single-cylinder high-efficiency down-the-hole hammer has the advantages of smooth air passage system, no return air passages, high pneumatic efficiency, reduced pressure loss, reasonable piston structure, high processing efficiency, no need for deep hole grinding, less channels on the piston, no return channels, and greatly prolonged service life of the piston.
Description
Technical field
The utility model relates to a kind of Pneumatic immpacting boring equipment, particularly a kind of efficient down-the-hole air hammer of valveless single cylinder type that is used for mine, engineering Drilling shot hole etc.
Background technology
The efficient down-the-hole air hammer of valveless single cylinder type is a kind of typical Pneumatic immpacting equipment, and it is the drilling tool of down-the-hole drill, is the operating mechanism that rig is implemented boring.This equipment is mainly used in Drilling diameter 65-305mm, hole depth 60m driling explosion hole.
The drilling efficiency of a down-the-hole drill depends on the performance of impactor to a great extent.
At present, the valveless down-the-hole air hammer that uses on the market is a kind of with the DHD series piston distribution rod-type valveless twin-tub structure down-the-hole air hammer of U.S. Ingersoll-rand company as representative.Its characteristics are big end drill hammer when being piston motion, and piston small end and inner casing interact and carry out distribution and guiding; Another kind is to be the Mission series piston distribution rod-type valveless single cylinder structure down-the-hole air hammer of representative with Sweden Sandvik rice Shengong department, be characterized in that the piston motion structure is opposite with DHD series, its back joint that has the API screw thread is the parts that impactor is connected with drilling rod, be equipped with and prevent that magmatic water from flowing into the check one way valve of impactor and drilling rod, lateral pin is the parts that connect distribution bar and check valve seat and back joint.The check valve seat can also be introduced compressed air in the distribution bar, realizes the distribution action of piston motion together with cylinder body, distribution bar, piston.Elongated shape piston by having central duct and other hole is a mechanical movement kinetic energy with compressed-air actuated power conversion directly, and by it the mode of this kinetic energy by collision is passed to drill bit.
The efficient down-the-hole air hammer of above-mentioned valveless single cylinder type has following disadvantages: 1, distribution bar, valve seat and back joint are rigidly connected with the lateral pin mode, vibration that impactor work the time is produced and reaction force can not be removed or weaken and pass to rig, reduce operating efficiency, the machine parts early damage is scrapped.
2, the distribution bar is longer, and has the bigger injection well of area, adopts ralocatable mode work, occurs the early fracture phenomenon easily, reliability when reducing impactor work.
3, more intake and exhaust road is arranged, thereby cause bigger atmospheric pressure lost.
4, have more distribution duct on the piston, air flue turnover and distance are long, and the gas pressure loss is big, make it responsive to the heat treatment reaction, and stress is concentrated, and work is often because of technology and structural reason early damage.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of reliability height, and unobstructed, the no Zigzag type gas circuit of system's gas circuit, piston structure are reasonable, easy to process, the efficient down-the-hole air hammer of valveless single cylinder type of long service life.
The purpose of this utility model is achieved in that the efficient down-the-hole air hammer of a kind of valveless single cylinder type, comprise back joint, non retern valve, front connector and the drill bit that is connected with front connector, be provided with joint hollow duct, back in the back joint, be provided with piston in the cylinder body, the distribution bar matches with piston, and distribution bar and air inlet seat are integrated; The distribution bar duct of distribution bar communicates with the air inlet seat hole on the air inlet seat, and piston matches with fairlead; Be provided with air supply chamber in the piston; Air chamber and rear gas chamber before the piston two ends are respectively equipped with; Before air chamber and piston communicate with passage between the cylinder body cannelure; Preceding air chamber communicates with the centre bore of drill bit; Piston is provided with second steam vent, and second steam vent communicates with air supply chamber; The piston face face is provided with air drain, and air drain communicates with first steam vent on the piston.Be provided with O type circle between cylinder body and the distribution bar.
The efficient down-the-hole air hammer of valveless single cylinder type that the utility model provides, have the following advantages: 1, the distribution pole length shortens greatly, can adopt fixed locate mode, easy fracture not, reliability when improving impactor work.
2, distribution bar and air inlet seat are integrated, and simple in structure and energy realizes that with the back joint elasticity be connected, and reduces vibration.
3, unobstructed, the no Zigzag type gas circuit of system's gas circuit improves pneumatic efficiency greatly, reduces atmospheric pressure lost.
4, piston structure is reasonable, and is easy to process, and the working (machining) efficiency height need not deep Hole.
5, the duct is few on the piston, does not have the duct of turning back, and piston life increases substantially.
6, impactor high efficiency.
7, can adapt to gas pressure and change significantly, can in 5-20 kilograms per centimeter 2 scopes, work.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the efficient down-the-hole air hammer of a kind of valveless single cylinder type, comprise back joint 1, non retern valve 2, front connector 14 and the drill bit 15 that is connected with front connector 14, be provided with joint hollow duct, back 6 in the back joint 1, be provided with piston 9 in the cylinder body 7, distribution bar 13 matches with piston 9, and distribution bar 13 is integrated with air inlet seat 18; The distribution bar duct 19 of distribution bar 13 communicates with the air inlet seat hole 20 on the air inlet seat 18, and piston 9 matches with fairlead 16; Be provided with air supply chamber 12 in the piston 9; Air chamber 3 and rear gas chamber 4 before piston 9 two ends are respectively equipped with; Before air chamber 3 and piston 9 communicate with passage 21 between cylinder body 7 cannelures; Preceding air chamber 3 communicates with the centre bore 5 of drill bit 15; Piston 9 is provided with second steam vent, 8, the second steam vents 8 and communicates with air supply chamber 12; Piston 9 surperficial faces are provided with air drain 10, and air drain 10 communicates with first steam vent 11 on the piston 9.Be provided with O type circle 17 between cylinder body 7 and the distribution bar 13.
In the utility model, the back joint 1 that has the API screw thread is the parts that connect impactor and drilling rod.Non retern valve 2 is to prevent that magmatic water from flowing into the one way valve of impactor and drilling rod, and distribution bar 13 and air inlet seat 18 are integrated, and except compressed air is introduced the cylinder body, also realizes the distribution action of piston motion together with cylinder body 7, piston 9.Piston 9 is for having the elongated shape piston in duct, and it is that direct power conversion with Compressed Gas is a part of mechanical movement kinetic energy, and by it this kinetic energy is passed to drill bit 15 by the mode of colliding.The structure cylinder body that cylinder body 7 is integrated for inside and outside cylinder, fairlead 16 have been distribution and guide effect, and front connector 14 drives drill bit 15 and rotates.
Operating principle of the present utility model is as follows: for starting impactor, must transfer impactor earlier.When drill bit contacts with rock and jack-up piston when being in position shown in Figure 3, start preparation and promptly come to an end.
Gases at high pressure P by introduce in joint 1 hollow duct 6 in back backs down non retern valve 2, arrives piston air supply chamber 12 through air inlet seat hole 20, the distribution bar duct 19 of air inlet seat 18.Gases at high pressure are by air chamber 3 and the rear gas chamber 4 before the cylinder of entering that replaces here.
When return began, piston was in position shown in Figure 1, and air chamber 3 promoted piston 9 motions before the passage 21 between second pore 8, piston 9 and the cylinder body cannelure of the gases at high pressure in the air supply chamber 12 on piston 9 entered.In the motion of piston 9 returns, when circular passage 21 was closed, preceding air chamber 3 air inlets stopped, and the gases at high pressure in the piston 9 forward air chambers 3 expand and continue to move upward, behind the front end and fairlead 16 disengagements of piston 9, preceding air chamber 3 gases are at the bottom of bit central hole 5 drains into the hole.When piston 9 beginning return motions, the gas P1 of back chamber 4 escapes at the bottom of the hole through first steam vent 11 on piston face air drain 10, the piston, and back pressure resistance suffered when making piston 9 motions is very little; When piston 9 rear end faces were closed rear end face circular passage 22, the motion of the return of piston 9 was compressed the gas of rear gas chamber 4; When piston 9 moved to piston air supply chamber 12 and forms the gap with distribution bar 13 microcephalies, gases at high pressure formed the gap through piston air supply chamber 12 and distribution bar 13 microcephalies and enter rear gas chamber 4.Because piston 9 motional inertias, piston 9 slides a segment distance, produces pressure up to the gases at high pressure that enter chamber 4, back and makes piston 9 stop the return motion.
During piston 9 stroke movements, piston 9 moves to piston air supply chamber 12 and distribution bar 13 microcephalies and forms space closure moment under the promotion of gases at high pressure, the passage that gases at high pressure enter rear gas chamber 4 is blocked, piston 9 expands by gas and travels forward, when opened piston 9 rear end face circular passages 22, the gas in the rear gas chamber 4 was at the bottom of end face circular passage 22, air drain 10, first steam vent 11, bit central hole 5 drain into the hole.This moment, piston 9 bump drill bit afterbodys were finished stroke movement.When piston 9 beginning stroke movements, the gas of preceding air chamber 3 continues at the bottom of fairlead 16 and bit central hole 5 are discharged to the hole; When piston 9 front ends entered fairlead 16, the gas of preceding air chamber 3 began compression, and piston 9 moves to always opens passage 21, and gases at high pressure enter into preceding air cavity 3, have finished the distribution process.
Claims (2)
1. efficient down-the-hole air hammer of valveless single cylinder type, comprise back joint (1), non retern valve (2), front connector (14) and the drill bit (15) that is connected with front connector (14), it is characterized in that: be provided with joint hollow duct (6), back in the back joint (1), be provided with piston (9) in the cylinder body (7), distribution bar (13) matches with piston (9), and distribution bar (13) is integrated with air inlet seat (18); The distribution bar duct (19) of distribution bar (13) communicates with air inlet seat hole (20) on the air inlet seat (18), and piston (9) matches with fairlead (16); Be provided with air supply chamber (12) in the piston (9); Piston (9) two ends are respectively equipped with preceding air chamber (3) and rear gas chamber (4); Before air chamber (3) and piston (9) communicate with passage (21) between cylinder body (7) cannelure; Preceding air chamber (3) communicates with the centre bore (5) of drill bit (15); Piston (9) is provided with second steam vent (8), and second steam vent (8) communicates with air supply chamber (12); Piston (9) surface is provided with air drain (10), and air drain (10) communicates with first steam vent (11) on the piston (9).
2. the efficient down-the-hole air hammer of valveless single cylinder type according to claim 1 is characterized in that: be provided with O type circle (17) between cylinder body (7) and the distribution bar (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201243756U CN201620757U (en) | 2010-03-05 | 2010-03-05 | Valveless single-cylinder high-efficiency down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201243756U CN201620757U (en) | 2010-03-05 | 2010-03-05 | Valveless single-cylinder high-efficiency down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201620757U true CN201620757U (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201243756U Expired - Fee Related CN201620757U (en) | 2010-03-05 | 2010-03-05 | Valveless single-cylinder high-efficiency down-the-hole hammer |
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| CN (1) | CN201620757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434094A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
-
2010
- 2010-03-05 CN CN2010201243756U patent/CN201620757U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434094A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
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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: 20101103 Termination date: 20160305 |
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| CF01 | Termination of patent right due to non-payment of annual fee |