CN102900387A - Friction self-locking drill rod clamping mechanism - Google Patents
Friction self-locking drill rod clamping mechanism Download PDFInfo
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- CN102900387A CN102900387A CN2012103945441A CN201210394544A CN102900387A CN 102900387 A CN102900387 A CN 102900387A CN 2012103945441 A CN2012103945441 A CN 2012103945441A CN 201210394544 A CN201210394544 A CN 201210394544A CN 102900387 A CN102900387 A CN 102900387A
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- locking
- clamping
- self
- drill rod
- friction self
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Abstract
A friction self-locking drill rod clamping mechanism comprises a clamping clack, a roll body and a return spring, wherein the roll body is connected with the return spring; the return spring is connected onto the clamping clack; three inclined clamping grooves are uniformly distributed in the clamping clack; the inclined angles of the inclined clamping grooves are smaller than a self-locking angle; and inclined planes of the inclined clamping grooves are curved surfaces or planes. The friction self-locking drill rod clamping mechanism disclosed by the invention has the advantages that due to the adoption of a friction self-locking principle, a great clamping force can be generated by using a relatively-small clamping force, and thus a drill rod is clamped. The friction self-locking drill rod clamping mechanism has the advantages of simple and stable structure, one-way stress, stable braking, capability of automatic resetting, self locking and fastening; the friction self-locking drill rod clamping mechanism plays a great pole in the work process; and a drill carriage is quick in rod discharge and is not easy to wear.
Description
Technical field
The present invention relates to the rock drilling machinery technical field, is a kind of friction self-locking card pricker mechanism for drill carriage specifically.
Background technology
Along with the development of mining industry and the continuous increase of demand, the Drilling of rock stratum medium-length hole is used in increasing exploitation field, the method of extension bar is generally used in the cutting of medium-length hole, in unloading the process of bar, the drilling rod that must double thread connects separates, its method of work is for clamping the drilling rod of below by card pricker mechanism, hammer drill drives the drilling rod counter-rotating of top, so that screw thread gets loose, but send the adapter sleeve that needs very large clamping force to produce the fixing lower kelly bar of frictional force in the threaded process, common clamp mechanism can't be stablized the adapter sleeve on the fastening drilling rod, and generation is skidded, and makes to unload the bar process slowly and produce very large mechanical wear.
Summary of the invention
The deficiency that exists in order to overcome above-mentioned technology, technical problem to be solved by this invention provide a kind of friction self-locking card pricker mechanism, adopt the friction self-locking principle to produce very large fastening force with the clamping force of less and clamp drilling rod.
Technical scheme of the present invention is: friction self-locking card pricker mechanism, comprise two card lobes, roller body, back-moving spring, and it is characterized in that: roller body is connected with back-moving spring, and back-moving spring is connected on the card lobe; 3 uniform inclined-plane draw-in grooves are arranged on the described card lobe.
The bevel angle of described inclined-plane draw-in groove is less than Self-locking angle.
The inclined-plane of described inclined-plane draw-in groove is curved surface or plane.
Advantage of the present invention is: this mechanism adopts the principle of friction self-locking, only needs to use the clamping force of less just can produce very large fastening force, thereby clamps drilling rod.This mechanism simple and stable structure, single load bearing, braking are stable, can automatically reset, self-locking is fastening, plays in the course of the work very large effect, and it is quick and not easy to wear that drill carriage unloads bar.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
Now by reference to the accompanying drawings, technology contents of the present invention is described further.
As shown in Figure 1, roller body 2 is connected with back-moving spring 3, and back-moving spring 3 is connected on the card lobe 1; 3 uniform inclined-plane draw-in grooves 5 are arranged on the described card lobe 1.The bevel angle of described inclined-plane draw-in groove 5 is less than Self-locking angle.The inclined-plane of described inclined-plane draw-in groove 5 is curved surface or plane.
During normal condition, under the effect of back-moving spring 3, roller body 2 is fixed on the lowest part of inclined-plane draw-in groove 5.During work, two card lobes 1 are in clamping connection the roller body 2 that is positioned at cover at this moment inclined-plane draw-in groove 5 bottoms and contact with adapter sleeve 4, when adapter sleeve 4 be rotated counterclockwise frictional force effect that roller body 2 when carrying out the motion of loose pricker blocked lobe 1 and adapter sleeve 4 by wedging in inclined-plane draw-in groove 5, form self-locking and block adapter sleeve 4.Card lobe 1 opens when loose bar is finished, and roller body 2 is pulled inclined-plane draw-in groove 5 bottoms and waits for next time loose bar under back-moving spring 3 effects.
Claims (3)
1. friction self-locking card pricker mechanism comprises two card lobes (1), roller body (2), back-moving spring (3), and it is characterized in that: roller body (2) is connected with back-moving spring (3), and back-moving spring (3) is connected on the card lobe (1); Uniform 3 inclined-plane draw-in grooves (5) are arranged on the described card lobe (1), and card lobe (1) is in clamping connection cover (4).
2. friction self-locking card pricker according to claim 1 mechanism, it is characterized in that: the bevel angle of described inclined-plane draw-in groove (5) is less than Self-locking angle.
3. friction self-locking card pricker according to claim 1 and 2 mechanism, it is characterized in that: the inclined-plane of described inclined-plane draw-in groove (5) is curved surface or plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103945441A CN102900387A (en) | 2012-10-17 | 2012-10-17 | Friction self-locking drill rod clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103945441A CN102900387A (en) | 2012-10-17 | 2012-10-17 | Friction self-locking drill rod clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102900387A true CN102900387A (en) | 2013-01-30 |
Family
ID=47572845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103945441A Pending CN102900387A (en) | 2012-10-17 | 2012-10-17 | Friction self-locking drill rod clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102900387A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266861A (en) * | 2013-06-03 | 2013-08-28 | 西安石油大学 | Roller type non-creasing clamp holder for punching piers of iron roughneck |
| CN107327279A (en) * | 2017-07-05 | 2017-11-07 | 辛卫 | A kind of band changes the rock drill of pricker device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1464873A (en) * | 1973-05-04 | 1977-02-16 | Fords Ltd | Device for locking a hollow core to a drive shaft or mandrel |
| CN2124307U (en) * | 1992-06-08 | 1992-12-09 | 煤炭科学研究总院南京研究所 | Hydraulic drill rod drawing machine |
| CN1084934A (en) * | 1992-09-28 | 1994-04-06 | 建湖县矿山石油机械厂 | Negative camber roll climbing clamping type hydraulic back pincers |
| CN101077536A (en) * | 2006-05-23 | 2007-11-28 | 山东威达机械股份有限公司 | Wedge surface locking drill chuck |
| CN201474634U (en) * | 2009-07-27 | 2010-05-19 | 杭州祥龙钻探设备有限公司 | Chuck system with fastener for drilling machine |
| CN101992739A (en) * | 2010-11-19 | 2011-03-30 | 湖南大学 | Gas drive friction self-locking collision energy-absorbing device |
| CN102112697A (en) * | 2008-06-26 | 2011-06-29 | 第一海底有限公司 | Tubular handling device |
| CN202850898U (en) * | 2012-10-17 | 2013-04-03 | 湖南恒至凿岩科技有限公司 | Frictional self-locking drill rod clamping mechanism |
-
2012
- 2012-10-17 CN CN2012103945441A patent/CN102900387A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1464873A (en) * | 1973-05-04 | 1977-02-16 | Fords Ltd | Device for locking a hollow core to a drive shaft or mandrel |
| CN2124307U (en) * | 1992-06-08 | 1992-12-09 | 煤炭科学研究总院南京研究所 | Hydraulic drill rod drawing machine |
| CN1084934A (en) * | 1992-09-28 | 1994-04-06 | 建湖县矿山石油机械厂 | Negative camber roll climbing clamping type hydraulic back pincers |
| CN101077536A (en) * | 2006-05-23 | 2007-11-28 | 山东威达机械股份有限公司 | Wedge surface locking drill chuck |
| CN102112697A (en) * | 2008-06-26 | 2011-06-29 | 第一海底有限公司 | Tubular handling device |
| CN201474634U (en) * | 2009-07-27 | 2010-05-19 | 杭州祥龙钻探设备有限公司 | Chuck system with fastener for drilling machine |
| CN101992739A (en) * | 2010-11-19 | 2011-03-30 | 湖南大学 | Gas drive friction self-locking collision energy-absorbing device |
| CN202850898U (en) * | 2012-10-17 | 2013-04-03 | 湖南恒至凿岩科技有限公司 | Frictional self-locking drill rod clamping mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266861A (en) * | 2013-06-03 | 2013-08-28 | 西安石油大学 | Roller type non-creasing clamp holder for punching piers of iron roughneck |
| CN107327279A (en) * | 2017-07-05 | 2017-11-07 | 辛卫 | A kind of band changes the rock drill of pricker device |
| CN107327279B (en) * | 2017-07-05 | 2019-04-16 | 四川钻神智能机械制造有限公司 | A kind of band changes the rock drill of pricker device |
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Legal Events
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|---|---|---|---|
| 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: 20130130 |