CN203879396U - Drive chuck for down-hole hammer - Google Patents

Drive chuck for down-hole hammer Download PDF

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Publication number
CN203879396U
CN203879396U CN201420295501.2U CN201420295501U CN203879396U CN 203879396 U CN203879396 U CN 203879396U CN 201420295501 U CN201420295501 U CN 201420295501U CN 203879396 U CN203879396 U CN 203879396U
Authority
CN
China
Prior art keywords
drill sleeve
drive chuck
card drill
wear plate
polycrystalline diamond
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.)
Expired - Fee Related
Application number
CN201420295501.2U
Other languages
Chinese (zh)
Inventor
王瑞利
何春霞
郭帅领
王浩刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huanghe Science and Technology College
Original Assignee
Huanghe Science and Technology College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huanghe Science and Technology College filed Critical Huanghe Science and Technology College
Priority to CN201420295501.2U priority Critical patent/CN203879396U/en
Application granted granted Critical
Publication of CN203879396U publication Critical patent/CN203879396U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A drive chuck for a down-hole hammer comprises a drive chuck body. The drive chuck body is composed of a connection section and an operation section. The outer diameter of the connection section is smaller than that of the operation section. The outer wall of the connection section is provided with external threads, and the inner wall of the connection section is provided with spline grooves in the axial direction. The outer wall of the operation section of the drive chuck body is provided with grooves uniformly in the peripheral direction, and wear plates protruding out of the operation section are arranged in the grooves and comprise one or two or three types of polycrystalline diamond compacts, hard alloy plates and polycrystalline diamond plates. The high wear resistance and the high impact resistance of the polycrystalline diamond compacts, the hard alloy plates and the polycrystalline diamond plates are applied to the drive chuck, so that the operation efficiency is improved, the service life of the drive chuck is prolonged, the replacement frequency of the drive chuck is reduced, the construction cost is lowered, and the work efficiency is improved.

Description

For the card drill sleeve of down-the-hole air hammer
Technical field
The utility model relates to a kind of down-the-hole air hammer, relates in particular to a kind of card drill sleeve for down-the-hole air hammer.
Background technology
Down-the-hole air hammer and down-hole hammer are used in conjunction with, and can be used for exploration, earth and rock works, mining boring and oil drilling field, have brought into play huge effect.Down-hole hammer impactor is arranged in outer shell and is formed by piston, inner casing, valve seat, one way valve etc., and card drill sleeve is arranged on the front portion of outer shell, is used for connecting down-hole hammer.When impactor work, under the effect of gases at high pressure, card drill sleeve is the part directly contacting with landwaste, rock, and this just requires card drill sleeve to have higher intensity, high-wearing feature.Traditional card drill sleeve adopts the materials such as 42CrMo to make after integral quenching, and the problem in use reflecting mostly is card drill sleeve and wears no resistance, and even occurs worn out hole phenomenon.In use procedure, need often to change card drill sleeve, affect the efficiency of Drilling, use cost is higher.For this reason, solve the current problem facing in the urgent need to developing a kind of super card drill sleeve wear-resisting, the high life.
Utility model content
The utility model is in order to solve weak point of the prior art, provides that a kind of Drilling efficiency is high, abrasion resistance strong, the card drill sleeve for down-the-hole air hammer of long service life.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: for the card drill sleeve of down-the-hole air hammer, comprise card drill sleeve body, card drill sleeve body is made up of linkage section and job step, the external diameter of linkage section is less than the external diameter of job step, the outer wall of linkage section is provided with external screw thread, the inwall of linkage section is axially arranged with spline, the job step outer wall of described card drill sleeve body is along the circumferential direction evenly provided with groove, in groove, be provided with the wear plate that protrudes from job step, wear plate comprises composite polycrystal-diamond, hard metal tip, the one of polycrystalline diamond sheet, two or three.
Described wear plate is provided with two circles, and composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer.
Described wear plate is cylindrical structural, and the external diameter of wear plate is that 8mm~25mm, axial length are 6mm~10mm.
Adopt technique scheme, the linkage section of card drill sleeve body is threaded with the outer shell of impactor, and the spline in linkage section is connected with the spline fitted on down-the-hold drill bit.The utlity model has following beneficial effect:
1, the utility model is that the high-wearing feature of composite polycrystal-diamond, hard metal tip, polycrystalline diamond sheet, stronger impact resistance are applied on card drill sleeve, improve operating efficiency, extend the application life of card drill sleeve, reduce card drill sleeve and changed number of times, and then reduction construction cost, increase work efficiency.
2, the external diameter of wear plate, length equidimension are the optimization technique parameters for economy and overall balance in application life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, card drill sleeve for down-the-hole air hammer of the present utility model, comprise card drill sleeve body 1, card drill sleeve body 1 is made up of linkage section 2 and job step 3, the external diameter of linkage section 2 is less than the external diameter of job step 3, the outer wall of linkage section 2 is provided with external screw thread, the inwall of linkage section 2 is axially arranged with spline 4, job step 3 outer walls of card drill sleeve body 1 are along the circumferential direction evenly provided with groove 5, groove 5 is semicircle cylindricality, in groove 5, be provided with the wear plate that protrudes from job step 3, wear plate comprises composite polycrystal-diamond, hard metal tip 6, the one of polycrystalline diamond sheet 7, two or three.
Wear plate is provided with two circles, and composite polycrystal-diamond is made up of cemented carbide substrate layer 8 and polycrystalline diamond layer 9.
Wear plate is cylindrical structural, and the external diameter of wear plate is that 8mm~25mm, axial length are 6mm~10mm.
The linkage section 2 of card drill sleeve body 1 is threaded with the outer shell of impactor, and the spline 4 in linkage section 2 is connected with the spline fitted on down-the-hold drill bit.The utility model is that the high-wearing feature of composite polycrystal-diamond, hard metal tip 6, polycrystalline diamond sheet 7, stronger impact resistance are applied on card drill sleeve, improve operating efficiency, extend the application life of card drill sleeve, reduce card drill sleeve and changed number of times, and then reduction construction cost, increase work efficiency.The external diameter of wear plate, length equidimension are the optimization technique parameters for economy and overall balance in application life.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.

Claims (3)

1. for the card drill sleeve of down-the-hole air hammer, comprise card drill sleeve body, card drill sleeve body is made up of linkage section and job step, the external diameter of linkage section is less than the external diameter of job step, the outer wall of linkage section is provided with external screw thread, the inwall of linkage section is axially arranged with spline, it is characterized in that: the job step outer wall of described card drill sleeve body is along the circumferential direction evenly provided with groove, in groove, be provided with the wear plate that protrudes from job step, wear plate comprises the one, two or three of composite polycrystal-diamond, hard metal tip, polycrystalline diamond sheet.
2. the card drill sleeve for down-the-hole air hammer according to claim 1, is characterized in that: described wear plate is provided with two circles, and composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer.
3. the card drill sleeve for down-the-hole air hammer according to claim 1 and 2, is characterized in that: described wear plate is cylindrical structural, and the external diameter of wear plate is that 8mm~25mm, axial length are 6mm~10mm.
CN201420295501.2U 2014-06-05 2014-06-05 Drive chuck for down-hole hammer Expired - Fee Related CN203879396U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420295501.2U CN203879396U (en) 2014-06-05 2014-06-05 Drive chuck for down-hole hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420295501.2U CN203879396U (en) 2014-06-05 2014-06-05 Drive chuck for down-hole hammer

Publications (1)

Publication Number Publication Date
CN203879396U true CN203879396U (en) 2014-10-15

Family

ID=51679909

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420295501.2U Expired - Fee Related CN203879396U (en) 2014-06-05 2014-06-05 Drive chuck for down-hole hammer

Country Status (1)

Country Link
CN (1) CN203879396U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105537586A (en) * 2015-12-14 2016-05-04 中国石油大学(北京) Machining method for boss type diamond composite material anti-abrasion belt, mould and anti-abrasion belt
CN112196470A (en) * 2020-10-09 2021-01-08 李荟敏 Rock drilling method and device by impacting and cutting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105537586A (en) * 2015-12-14 2016-05-04 中国石油大学(北京) Machining method for boss type diamond composite material anti-abrasion belt, mould and anti-abrasion belt
CN112196470A (en) * 2020-10-09 2021-01-08 李荟敏 Rock drilling method and device by impacting and cutting

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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: 20141015

Termination date: 20150605

EXPY Termination of patent right or utility model