CN102434094A - Piston tail pipe type impacter of valveless single-cylinder type downhole - Google Patents
Piston tail pipe type impacter of valveless single-cylinder type downhole Download PDFInfo
- Publication number
- CN102434094A CN102434094A CN2010102954355A CN201010295435A CN102434094A CN 102434094 A CN102434094 A CN 102434094A CN 2010102954355 A CN2010102954355 A CN 2010102954355A CN 201010295435 A CN201010295435 A CN 201010295435A CN 102434094 A CN102434094 A CN 102434094A
- Authority
- CN
- China
- Prior art keywords
- piston
- air
- tail pipe
- cylinder body
- small end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a piston tail pipe type impacter of a valveless single-cylinder type downhole, which comprises a cylinder body, a rear joint, a front joint and a drill bit; an air distributing seat provided with an axial air-distribution seat pore canal is hermetically arranged in a cylinder body; a check valve is arranged on the air distribution seat; an air distribution rod is provided with an air distribution rod big end and an air distribution rod small end; the air distribution rod and a check valve seat are of an integrated structure; the air distribution rod small end is arranged in a piston air-supply chamber on a piston; the inner diameter of a middle part of a piston air-supply chamber is more than the outer diameter of the air distribution rod small end; the piston is provided with a piston big end and a piston small end; a rear air chamber is formed between the air distribution rod and the piston small end; a front annular channel and a rear annular channel are formed between the cylinder body inner wall and the cylinder body outer wall; a piston surface air groove is formed on the outer surface of the piston; and a front air chamber is formed between a drill bit tail pipe and a piston big end. The piston tail pipe type impacter of the valveless single-cylinder type downhole, provided by the invention effectively overcomes the defects of the traditional impacter of the valveless single-cylinder type down hole, and has the advantages of high working efficiency, good reliability and greatly increased pneumatic efficiency.
Description
Technical field
The present invention relates to a kind of Pneumatic immpacting boring equipment, especially a kind of efficient down-the-hole air hammer of piston tail pipe formula valveless single cylinder type that is used for mine, the explosion of engineering Drilling etc.
Background technology
The big end drill hammer of piston when the main feature of domestic existing piston tail pipe formula valveless single cylinder type down-the-hole air hammer is piston motion, piston small end and cylinder body interact and carry out distribution and guiding, have following shortcoming:
1, between valve seat and the back joint rubber ring is housed;, impactor self just can absorb certain energy when working; And rubber is prone to aging distortion after impactor work a period of time; Will produce and jump and seriously influence the quality of fit between each parts, thereby reduce operating efficiency, and shorten the working life of impactor.
2, distribution bar, valve seat and back joint are rigidly connected with the lateral pin mode, and vibration that is produced during impactor work and reaction force can not be removed or weaken and pass to rig, reduce operating efficiency, and the machine parts early damage is scrapped.
3, 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.
4, more intake and exhaust road is arranged, thereby cause bigger atmospheric pressure lost.
5, 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
Technical problem to be solved by this invention provides a kind of piston tail pipe formula valveless single cylinder type down-the-hole air hammer; Effectively overcome the shortcoming of existing piston tail pipe formula valveless single cylinder type down-the-hole air hammer; High efficiency, good reliability improve pneumatic efficiency greatly, and atmospheric pressure lost is little.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of piston tail pipe formula valveless single cylinder type down-the-hole air hammer comprises that inwall is provided with the cylinder body of cannelure; Cylinder body one end is installed with the back joint, and the cylinder body other end is installed with front connector, is connected with the front connector feather key with the drill bit in inner duct; The distribution seat that is provided with axial distribution seat duct is seal-installed in the cylinder body, on the distribution seat non retern valve is installed, and the distribution bar that offers distribution bar vent cap is provided with big end of distribution bar and distribution bar small end; Distribution bar and check valve seat are structure as a whole, and piston is provided with big end of piston and piston small end, and distribution bar small end is positioned at the piston air supply chamber on the piston small end; The piston air supply chamber matches with distribution bar small end; The internal diameter of piston air supply chamber mid portion forms rear gas chamber greater than the external diameter of distribution bar small end between distribution bar and the piston small end, forms closable preceding circular passage and circular passage, back between the cannelure of inboard wall of cylinder block and the piston outer wall; Outer surface of piston is provided with the piston face air drain of longitudinal extension; Rear gas chamber is communicated with the circular passage, back, and drill bit tail pipe one end is installed in the duct, inside of drill bit, and the drill bit tail pipe other end is positioned in the piston venting channels in the big end of piston; Air chamber before forming between big end of piston and the drill bit; Inclined hole and preceding circular passage were communicated with preceding air chamber under the piston air supply chamber passed through, and the piston face air drain is communicated with the piston venting channels through last inclined hole, and the big end of piston matches with the drill bit tail pipe.
Cylinder body is the structure cylinder body that inside and outside cylinder is integrated.
Snap ring is installed on the drill bit.
A kind of piston tail pipe formula valveless single cylinder type down-the-hole air hammer provided by the invention effectively overcomes the shortcoming that has piston tail pipe formula valveless single cylinder type down-the-hole air hammer now, and its beneficial effect is following:
1, since distribution bar and check valve seat be structure as a whole; Non retern valve is fixedly mounted in the distribution seat; Fluctuating when the direct radial fit of distribution bar and cylinder body has reduced work; Back joint end face directly be pressed in when having avoided work on the distribution bar about jump, yet maintenance high-precision cooperation that can be permanent, lasting assurance operating efficiency; The distribution pole length shortens greatly, can adopt fixed locate mode, easy fracture not, reliability when improving impactor work.
2, compare with existing valveless single cylinder type down-the-hole air hammer, the distribution bar has dwindled diameter of axle ratio, and is rational in infrastructure, is easy to processing, not yielding and fracture when work, and gas distribution channels is succinctly unobstructed, thereby has reduced the loss of gas energy.
3, the piston air supply chamber on the piston is not communicated with the piston venting channels mutually; Preceding circular passage and circular passage, back are along with the motion of piston can be closed; Fitting piston surface air drain; Form blind hole structure, realize that Compressed Gas arrives forward and backward air chamber respectively through short line, improved the efficient of impactor.
4, drilling hole amount is few on the piston, diameter of axle variation is less, and the stress in the time of transmitting impactor work has more stably prolonged working life; On the piston duct quantity few, do not have turn back duct, no elongated orifices, easy to process, need not deep Hole; Working (machining) efficiency is high, good reliability.
5, the quality of piston and movement travel are through adjustment rationally; The frequency of impact and the single-impact that have improved impactor can; Thereby can realize the work of " high frequency, high energy " in various rock stratum; Improved operating efficiency, compared with existing valveless single cylinder type down-the-hole air hammer, operating efficiency can improve 20%～30%.
6, working pressure range is wide, can be in 5～25 kilograms per centimeter
2Work in the scope.
7, the design of snap ring can prevent effectively that drill bit from coming off, and has guaranteed the reliability of drill bit work.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is a structural representation of the present invention.
The specific embodiment
As shown in Figure 1, the present invention includes the cylinder body 7 that inwall is provided with cannelure, cylinder body 7 one ends are installed with back joint 1; Back joint 1 is offered hollow duct 16, and cylinder body 7 other ends are installed with front connector 14, and the drill bit 15 that is connected with front connector 14 feather keys offers the duct, inside 17 until bit face; The distribution seat 5 that is provided with axial distribution seat duct 18 is seal-installed in the cylinder body 7; Non retern valve 3 is installed on the distribution seat 5, and the distribution bar 6 that offers distribution bar vent cap 20 is provided with big end of distribution bar and distribution bar small end, and distribution bar 6 is structure as a whole with the check valve seat; Piston 8 is provided with big end of piston and piston small end; Distribution bar small end is positioned at the piston air supply chamber 19 on the piston small end, and piston air supply chamber 19 matches with distribution bar small end, and the internal diameter of piston air supply chamber 19 mid portions is greater than the external diameter of distribution bar small end; Form rear gas chamber 9 between distribution bar 6 and the piston small end; Form closable preceding circular passage 21 and circular passage 22, back between the cannelure of cylinder body 7 inwalls and the piston outer wall, piston 8 external surfaces are provided with the piston face air drain 25 of longitudinal extension, and rear gas chamber 9 is communicated with circular passage 22, back; Drill bit tail pipe 10 1 ends are installed in the duct, inside 17 of drill bit 15; Drill bit tail pipe 10 other ends are positioned in the piston venting channels 24 in the big end of piston, air chamber 11 before forming between big end of piston and the drill bit 15, and inclined hole 13 was communicated with preceding air chamber 11 with preceding circular passage 21 under piston air supply chamber 19 passed through; Piston face air drain 25 is communicated with piston venting channels 24 through last inclined hole 23, and the big end of piston matches with drill bit tail pipe 10.
Be provided with 0 type circle 2 between distribution seat 5 and the cylinder body 7.
The structure cylinder body that cylinder body 7 is integrated for inside and outside cylinder.
Snap ring 12 is installed on the drill bit 15.
The course of work of the present invention is following:
For starting impactor, earlier impactor vertically to be placed, drill bit 15 contacts when also jack-up piston 8 makes piston 8 be in position shown in Fig. 1 drill bit 15 down with rock, start preparation and finish.
The gases at high pressure P that introduces by the hollow duct 16 of back joint 1; Back down non retern valve 3; Through distribution seat duct 18, distribution bar vent cap 20 enters in the piston air supply chamber 19; Through in the air chamber 11 before inclined hole 13, preceding circular passage 21 get into down, gas pressure forces piston 8 to move upward again, piston 8 beginning return motions; At this moment, the gas in the rear gas chamber 9 through after circular passage 22, piston face air drain 25, go up the duct, inside 17 that inclined hole 23 and piston venting channels 24 get on the drill bits 15 and discharge, the back pressure resistance that piston 8 is received significantly reduces, the return motion is more prone to.
In the return motion, along with moving upward of piston 8, preceding circular passage 21 is closed; Preceding air chamber 11 air inlets stop; Before gases at high pressure in the air chamber 11 expand and promote piston 8 and continue to move upward, move to after the big end of piston throws off with drill bit tail pipe 10, the gas in the preceding air chamber 11 is through inside duct 17 discharges of the tail pipe air duct 26 on the drill bit tail pipe 10 on drill bit 15; When circular passage 22 is closed after piston 8 moves to; Gas in the rear gas chamber 9 is no longer discharged, and the return motion of piston 8 makes the gas in the rear gas chamber 9 be compressed, when piston 8 moves to distribution bar small end entering piston air supply chamber 19 mid portions; Form the gap between piston air supply chamber 19 inner surfaces and the distribution bar small end external surface, gases at high pressure get in the rear gas chamber 9 through this gap; But piston 8 is because inertia can continue the segment distance that moves upward, and the gases at high pressure in getting into rear gas chamber 9 produce pressure makes piston 8 stop the return motion, the beginning stroke movement; At this moment, the gas in the preceding air chamber 11 continues to discharge through tail pipe air duct 26 and inner duct 17, and the resistance that piston 8 is received significantly reduces, and stroke movement is more prone to.
During piston 8 stroke movements; Begin to move downward under the promotion of the gases at high pressure of piston 8 in rear gas chamber 9; When moving to part piston air supply chamber 19 belows and that distribution bar small end matches, the space closure between distribution bar small end and the piston air supply chamber 19, the passage that gases at high pressure get into rear gas chamber 9 is blocked; Piston 8 leans on gas to expand to continue to move downward when open circular passage 22, back; Gas in the rear gas chamber 9 through after circular passage 22, piston face air drain 25, go up the duct, inside 17 that inclined hole 23 and piston venting channels 24 get on the drill bits 15 and discharge, this moment, piston small end bump drill bit 15 was accomplished stroke movements, promptly once the boring action is accomplished.
When drill bit tail pipe 10 gets into the big end of piston, the pathway closure that gas is discharged in the preceding air chamber 11, gas begins compression; When piston 8 moves to preceding circular passage 21 when opening; In the air chamber 11, accomplish the distribution process before gases at high pressure get into, can begin the action of next time holing.
As stated, air chamber 11 carried out the return and the stroke movement of piston 8 with rear gas chamber 9 before the distribution bar vent cap 20 of gases at high pressure on distribution bar 6 alternately got into, thereby drove drill bit 15 work.
Claims (3)
1. piston tail pipe formula valveless single cylinder type down-the-hole air hammer; Comprise that inwall is provided with the cylinder body of cannelure (7); Cylinder body (7) one ends are installed with back joint (1), and cylinder body (7) other end is installed with front connector (14), are connected with front connector (14) feather key with the drill bit (15) of inner duct (17); It is characterized in that: the distribution seat (5) that is provided with axial distribution seat duct (18) is seal-installed in the cylinder body (7); Non retern valve (3) is installed on the distribution seat (5), and the distribution bar (6) that offers distribution bar vent cap (20) is provided with big end of distribution bar and distribution bar small end, and distribution bar (6) is structure as a whole with the check valve seat; Piston (8) is provided with big end of piston and piston small end; Distribution bar small end is positioned at the piston air supply chamber (19) on the piston small end, and piston air supply chamber (19) matches with distribution bar small end, and the internal diameter of piston air supply chamber (19) mid portion is greater than the external diameter of distribution bar small end; Form rear gas chamber (9) between distribution bar (6) and the piston small end; Form closable preceding circular passage (21) and circular passage (22), back between the cannelure of cylinder body (7) inwall and the piston outer wall, piston (8) external surface is provided with the piston face air drain (25) of longitudinal extension, and rear gas chamber (9) is communicated with circular passage, back (22); Drill bit tail pipe (10) one ends are installed in the duct, inside (17) of drill bit (15); Drill bit tail pipe (10) other end is positioned in the piston venting channels (24) in the big end of piston, air chamber (11) before forming between big end of piston and the drill bit (15), and piston air supply chamber (19) is through inclined hole (13) and preceding circular passage (21) are communicated with preceding air chamber (11) down; Piston face air drain (25) is communicated with piston venting channels (24) through last inclined hole (23), and the big end of piston matches with drill bit tail pipe (10).
2. a kind of piston tail pipe formula valveless single cylinder type down-the-hole air hammer according to claim 1 is characterized in that: the structure cylinder body that cylinder body (7) is integrated for inside and outside cylinder.
3. a kind of piston tail pipe formula valveless single cylinder type down-the-hole air hammer according to claim 1 and 2 is characterized in that: snap ring (12) is installed on the drill bit (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102954355A CN102434094A (en) | 2010-09-29 | 2010-09-29 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102954355A CN102434094A (en) | 2010-09-29 | 2010-09-29 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434094A true CN102434094A (en) | 2012-05-02 |
Family
ID=45982419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102954355A Pending CN102434094A (en) | 2010-09-29 | 2010-09-29 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434094A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174379A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Cyclone high wind pressure down-hole hammer with tail pipe |
| CN107642327A (en) * | 2017-10-30 | 2018-01-30 | 吉林大学 | A kind of enclosed positive and negative circulation impact device |
| CN108756730A (en) * | 2018-07-03 | 2018-11-06 | 苏州新锐合金工具股份有限公司 | A kind of down-the-hole top hammer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046502A (en) * | 1973-01-09 | 1975-04-25 | ||
| US4094366A (en) * | 1975-10-02 | 1978-06-13 | Abraham Gien | Pneumatic percussion machines |
| CN201087695Y (en) * | 2007-10-16 | 2008-07-16 | 长沙黑金刚实业有限公司 | High wind pressure downhole air hammer |
| CN201273137Y (en) * | 2008-09-04 | 2009-07-15 | 长沙天和钻具机械有限公司 | Novel downhole air hammer |
| CN201301664Y (en) * | 2008-11-26 | 2009-09-02 | 宜昌市五环钻机具有限责任公司 | Down-the-hole hammer |
| CN201460718U (en) * | 2009-06-04 | 2010-05-12 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder type middle-low air pressure downhole impactor |
| CN201620757U (en) * | 2010-03-05 | 2010-11-03 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder high-efficiency down-the-hole hammer |
| CN201786249U (en) * | 2010-09-29 | 2011-04-06 | 宜昌市五环钻机具有限责任公司 | Piston tail-pipe type and single-cylinder down-hole impactor without valve |
-
2010
- 2010-09-29 CN CN2010102954355A patent/CN102434094A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046502A (en) * | 1973-01-09 | 1975-04-25 | ||
| US4094366A (en) * | 1975-10-02 | 1978-06-13 | Abraham Gien | Pneumatic percussion machines |
| CN201087695Y (en) * | 2007-10-16 | 2008-07-16 | 长沙黑金刚实业有限公司 | High wind pressure downhole air hammer |
| CN201273137Y (en) * | 2008-09-04 | 2009-07-15 | 长沙天和钻具机械有限公司 | Novel downhole air hammer |
| CN201301664Y (en) * | 2008-11-26 | 2009-09-02 | 宜昌市五环钻机具有限责任公司 | Down-the-hole hammer |
| CN201460718U (en) * | 2009-06-04 | 2010-05-12 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder type middle-low air pressure downhole impactor |
| CN201620757U (en) * | 2010-03-05 | 2010-11-03 | 宜昌市五环钻机具有限责任公司 | Valveless single-cylinder high-efficiency down-the-hole hammer |
| CN201786249U (en) * | 2010-09-29 | 2011-04-06 | 宜昌市五环钻机具有限责任公司 | Piston tail-pipe type and single-cylinder down-hole impactor without valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174379A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Cyclone high wind pressure down-hole hammer with tail pipe |
| CN107642327A (en) * | 2017-10-30 | 2018-01-30 | 吉林大学 | A kind of enclosed positive and negative circulation impact device |
| CN107642327B (en) * | 2017-10-30 | 2023-09-15 | 吉林大学 | Closed positive and negative circulation impactor |
| CN108756730A (en) * | 2018-07-03 | 2018-11-06 | 苏州新锐合金工具股份有限公司 | A kind of down-the-hole top hammer |
| CN108756730B (en) * | 2018-07-03 | 2024-04-12 | 苏州新锐合金工具股份有限公司 | Down-the-hole top hammer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202673138U (en) | Piston guide sleeve type valveless double-cylinder down-hole hammer | |
| CN201301664Y (en) | Down-the-hole hammer | |
| CN104265154A (en) | Novel down-the-hole impactor | |
| CN103174379A (en) | Cyclone high wind pressure down-hole hammer with tail pipe | |
| CN104265159B (en) | A kind of down-the-hole air hammer | |
| CN204851057U (en) | Hyperbar is soon towards down --hole churn drilling tools | |
| CN203321313U (en) | Down-hole hammer | |
| CN105156025B (en) | A kind of hyperbar rushes down-hole percussion drill tool soon | |
| CN207278182U (en) | High air-pressure DTH hammer | |
| CN201502318U (en) | High air-pressure down-the-hole hammer | |
| CN102434094A (en) | Piston tail pipe type impacter of valveless single-cylinder type downhole | |
| CN103277043A (en) | Efficient medium-low-pressure down-hole hammer | |
| CN105156024B (en) | One kind rushes wear-resistant high life down-the-hole churn drilling tools soon | |
| CN102434093A (en) | Piston-guide-sleeve-type valveless single-cylinder-type high-efficiency down-hole hammer | |
| CN201786248U (en) | Piston guide sleeve type no-valve single-cylinder type efficient down-hole hammer | |
| CN201786249U (en) | Piston tail-pipe type and single-cylinder down-hole impactor without valve | |
| CN207278184U (en) | Down-the-hole air hammer piston | |
| CN203114165U (en) | Cyclone band tail pipe high wind pressure down-hole hammer | |
| CN204827221U (en) | Novel valveless does not have pneumatic downhole air hammer of nylon tail pipe | |
| CN201460718U (en) | Valveless single-cylinder type middle-low air pressure downhole impactor | |
| CN204851058U (en) | Soon towards stand wear and tear high life down --hole churn drilling tools | |
| RU121854U1 (en) | SUBMERSIBLE SHOULDER | |
| CN204060508U (en) | A kind of down-the-hole air hammer | |
| CN204060501U (en) | A kind of Novel downhole air hammer | |
| CN203296683U (en) | High-air-pressure down-hole impactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |