CN102434113A - Front connector of high air-pressure down-the-hole hammer - Google Patents
Front connector of high air-pressure down-the-hole hammer Download PDFInfo
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- CN102434113A CN102434113A CN2011104536870A CN201110453687A CN102434113A CN 102434113 A CN102434113 A CN 102434113A CN 2011104536870 A CN2011104536870 A CN 2011104536870A CN 201110453687 A CN201110453687 A CN 201110453687A CN 102434113 A CN102434113 A CN 102434113A
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- front connector
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Abstract
The invention provides a front connector of a high air-pressure down-the-hole hammer. A wear resistant material layer is welded on an excircle with the maximum diameter on the front end of the front connector, the welding seam direction of the wear resistant material layer is along the axis of the front connector or along the circumference of the front connector, or forms an angle of inclination with the axis of the front connector, and the wear resistant material layer is a tungsten carbide wear resistant welding rod. By welding the wear resistant material layer with a certain thickness on the excircle on the front end of the front connector, when a hammer works, the high speed returning debris firstly scours and abrades the wear resistant material layer welded on the surface of the front connector under the action of a high pressure gas, thus avoiding that the front end of the front connector directly withstands the violent scouring and abrasion of the debris and greatly increasing the service life of the front connector.
Description
Technical field
The present invention relates to a kind of down-the-hole air hammer of gas rock drilling perforation usefulness, relate in particular to the front connector of high blast down-the-hole air hammer.
Background technology
High blast down-the-hole air hammer is made up of parts such as back joint, outer tube, non retern valve, cylinder, distribution seat, piston, fairlead, retaining ring, front connectors.Whole impactor is connected with down-the-hold drill bit with retaining ring through front connector, and drill bit is that spline is connected with front connector.Be the piston that utilizes the compressed air-driven down-the-hole air hammer during work, impact down-the-hold drill bit with bigger ballistic work and higher frequency, simultaneously under the drive of rig; The revolution of drill bit low speed; Make catalase, the landwaste that is produced is carried by high pressure draught and returns to the face of land, thereby realizes creeping into.The landwaste that the broken rock of impactor produces is compressed air and blows out when empty outer, at first washes away, denudes the front connector end of impactor.Directly the washing away and denude of the landwaste that front connector is returned on will bearing at a high speed in drilling process, especially face drill bit vent and ash pit the position erosive wear severity especially.The Technology for Heating Processing of integral quenching is generally adopted in front connector in the manufacture process; Hardness is about the HRC40 degree; Outer round surface often washes away very dark groove, and the excircle part that also directly causes outer tube to contact with front connector is is sometimes worn and torn fast, when serious even worn out; Cause the too early together inefficacy of outer tube and front connector; The stratum one tool impactor hard at some, that abrasion is stronger need be changed two front connectors, causes to be complementary with the life-span of other part the application life of front connector, has had a strong impact on giving full play to of impactor whole service life.
In sum, the existence of these problems can directly have influence on the increase of impactor use cost, and then increases whole engineering cost.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of high blast down-the-hole air hammer is provided.
The object of the invention is realized through following technical scheme:
The front connector of high blast down-the-hole air hammer; Characteristics are: apply on the maximum cylindrical of the point diameter of said front connector and be welded with wear-resistant material layer, the bead direction of said wear-resistant material layer along front connector axially, or circumferential along front connector, or axially be the angle of slope with front connector.
Further, the front connector of above-mentioned high blast down-the-hole air hammer, wherein, said wear-resistant material layer is the carbine abrasion-proof welding rod.
Further, the front connector of above-mentioned high blast down-the-hole air hammer wherein, has weld groove on the cylindrical of the point diameter of said front connector maximum, applies the weldering wear-resistant material layer on the weld groove.
The substantive distinguishing features of technical scheme of the present invention is mainly reflected in progressive:
Through apply the certain thickness wear-resistant material layer of weldering at front connector front end cylindrical; During impactor work; Under the effect of gases at high pressure, return on the high speed that landwaste at first washes away and what denude is the wear-resistant material layer be welded in the front connector surface applying, avoided the front connector fore-end directly to bear acutely washing away of landwaste and denuded; Thereby, is more than doubled the application life of front connector.Apply the front connector of weldering and also the certain protection effect has been played on the surface of whole impactor; Alleviated the abrasion of landwaste impact device outer wall to a certain extent; Avoided the problem of front connector because of not wear-resisting and too early inefficacy; Can be because of the initial failure of front connector, the directly performance of whole other component function of tool impactor of influence.And along with the front connector raising in application life, the use cost of impactor also reduces greatly, and then has reduced in the engineering cost input to drilling tool.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1: organigram of the present invention;
The A portion enlarged diagram of Fig. 2: Fig. 1.
The specific embodiment
As shown in Figure 1; The front connector of high blast down-the-hole air hammer; Apply on the cylindrical 2 of the point diameter maximum of front connector 1 and be welded with wear-resistant material layer 3; The bead direction of wear-resistant material layer 3 along front connector axially, or circumferential along front connector, or axially be the angle of slope with front connector, wear-resistant material layer 3 is carbine abrasion-proof welding rods.
As shown in Figure 2, have weld groove on the cylindrical 2 of the point diameter maximum of front connector, apply the certain thickness wear-resistant material layer 3 of weldering on the weld groove; Apply the front end of the position of weldering at big cylindrical; Earlier on cylindrical, process the weld groove that is used for the build-up wear-resistant material layer, weld groove length accounts for about 1/2 of big cylindrical length, and wear-resistant material layer 3 adopts tungsten carbide series wear resistance electrode; The direction of weld seam is along the front connector circumferencial direction, and the cylindrical that applies postwelding is concordant basically with the big cylindrical of front connector itself.
In the process of using; Working environment according to the impactor use; What the landwaste that returns on the high speed at the bottom of the hole at first washed away, denudes is wear-resistant material layer 3; The wear-resistant material layer 3 that applies weldering is avoided because of excessive wear causes front connector shortening in application life all playing the effect of protection on its covered surfaces and impactor and the front connector cylindrical, thereby influences the application life of whole impactor.
Through apply the certain thickness wear-resistant material layer 3 of weldering at front connector front end cylindrical; During impactor work; Under the effect of gases at high pressure, return on the high speed that landwaste at first washes away and what denude is to apply the wear-resistant material layer 3 be welded in the front connector surface, avoided the front connector fore-end directly to bear acutely washing away of landwaste and denuded; Thereby, is more than doubled the application life of front connector.Apply the front connector of weldering and also the certain protection effect has been played on the surface of whole impactor; Alleviated the abrasion of landwaste impact device outer wall to a certain extent; Avoided the problem of front connector because of not wear-resisting and too early inefficacy; Can be because of the initial failure of front connector, the directly performance of whole other component function of tool impactor of influence.And along with the front connector raising in application life, the use cost of impactor also reduces greatly, and then has reduced in the engineering cost input to drilling tool.
It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. the front connector of high blast down-the-hole air hammer; It is characterized in that: apply on the maximum cylindrical of the point diameter of said front connector and be welded with wear-resistant material layer, the bead direction of said wear-resistant material layer along front connector axially, or circumferential along front connector, or axially be the angle of slope with front connector.
2. the front connector of high blast down-the-hole air hammer according to claim 1 is characterized in that: said wear-resistant material layer is the carbine abrasion-proof welding rod.
3. the front connector of high blast down-the-hole air hammer according to claim 1 is characterized in that: have weld groove on the cylindrical of the point diameter maximum of said front connector, apply the weldering wear-resistant material layer on the weld groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104536870A CN102434113A (en) | 2011-12-30 | 2011-12-30 | Front connector of high air-pressure down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104536870A CN102434113A (en) | 2011-12-30 | 2011-12-30 | Front connector of high air-pressure down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434113A true CN102434113A (en) | 2012-05-02 |
Family
ID=45982438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104536870A Pending CN102434113A (en) | 2011-12-30 | 2011-12-30 | Front connector of high air-pressure down-the-hole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594805A (en) * | 2015-01-04 | 2015-05-06 | 苏州新锐合金工具股份有限公司 | Tri-cone bit with strong protection palm tips |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375377A (en) * | 2002-04-23 | 2002-10-23 | 江汉石油钻头股份有限公司 | Wear-resistant tungsten carbide bead-welding material and welding rod |
| CN101116932A (en) * | 2007-09-07 | 2008-02-06 | 武汉铁锚焊接材料股份有限公司 | Wolfram carbine abrasion-proof core deposit welding rod |
| 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 |
| CN101440451A (en) * | 2007-11-20 | 2009-05-27 | 王镇全 | Diamond composite material anti-wear material for drill pipe joint |
| US20100139979A1 (en) * | 2008-12-08 | 2010-06-10 | Smith International, Inc. | Percussion Drilling Assembly With Annular Locking Member |
| US20110303461A1 (en) * | 2007-06-04 | 2011-12-15 | Schlumberger Technology Corporation | Clutch for a Jack Element |
| CN202467687U (en) * | 2011-12-30 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Front connector of high pressure down-hole hammer |
-
2011
- 2011-12-30 CN CN2011104536870A patent/CN102434113A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375377A (en) * | 2002-04-23 | 2002-10-23 | 江汉石油钻头股份有限公司 | Wear-resistant tungsten carbide bead-welding material and welding rod |
| US20110303461A1 (en) * | 2007-06-04 | 2011-12-15 | Schlumberger Technology Corporation | Clutch for a Jack Element |
| CN101116932A (en) * | 2007-09-07 | 2008-02-06 | 武汉铁锚焊接材料股份有限公司 | Wolfram carbine abrasion-proof core deposit welding rod |
| 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 |
| CN101440451A (en) * | 2007-11-20 | 2009-05-27 | 王镇全 | Diamond composite material anti-wear material for drill pipe joint |
| US20100139979A1 (en) * | 2008-12-08 | 2010-06-10 | Smith International, Inc. | Percussion Drilling Assembly With Annular Locking Member |
| CN202467687U (en) * | 2011-12-30 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Front connector of high pressure down-hole hammer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594805A (en) * | 2015-01-04 | 2015-05-06 | 苏州新锐合金工具股份有限公司 | Tri-cone bit with strong protection palm tips |
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Application publication date: 20120502 |