CN208106310U - A kind of impactor of bicavate outer sleeve structure - Google Patents
A kind of impactor of bicavate outer sleeve structure Download PDFInfo
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- CN208106310U CN208106310U CN201820204839.0U CN201820204839U CN208106310U CN 208106310 U CN208106310 U CN 208106310U CN 201820204839 U CN201820204839 U CN 201820204839U CN 208106310 U CN208106310 U CN 208106310U
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Abstract
The utility model relates to a kind of impactors of bicavate outer sleeve structure, it includes rear joint, is connected with outer tube in the rear joint；The internal sleeve of the outer tube is equipped with inner casing, and there is distribution bar in the inside of the inner casing by rear joint location and installation, and the inside cavity of the distribution bar is equipped with non-return valve, is equipped with spring in the inside cavity of non-return valve；Piston is installed, one end of the piston is matched with the inner wall of inner casing, and the other end is matched with the guide sleeve being mounted on inside outer tube inside the outer tube；The end of the outer tube is equipped with front connector, and the end face location and installation that the front connector and guide sleeve match has snap ring；The inside of the front connector is slidably installed by snap ring limit drill bit, and the impact end surface of the drill bit and the end face of piston are engaged, and transmit impact energy.It increases effectively impact piston to have worked area, so that compressed gas utilization rate greatly improves.
Description
Technical field
The utility model relates to a kind of pneumatic impact equipment components, especially a kind of impact of bicavate outer sleeve structure
Device.
Background technique
Valveless type down-the-hole air hammer is a kind of typical pneumatic impact equipment, it is the drilling tool of down-the-hole drill, is drilling machine reality
Apply the operating mechanism of drilling.This equipment is mainly used for Drilling diameter 65-305mm, hole depth 60m driling explosion hole.Obviously, one
The drilling efficiency of down-the-hole drill depends greatly on the performance of impactor.
Currently, the valveless down-the-hole air hammer used in the market is mainly to be produced by Sandvik rice Shengong department of Sweden
Mission series piston-guide-sleeve-type valveless single-cylinder structure down-the-hole air hammer, Mission series valve free impacter is by 16 parts
Composition, the rear joint 1 with API screw thread is the parts that impactor is connect with drilling rod；Non-return valve 2 is to prevent magmatic water from flowing into impact
The check valve of device and drilling rod；Lateral pin 5 is distribution bar 8 and the parts that check valve seat 3, rear joint 1 connect；Check valve seat 3 can also incite somebody to action
Compressed air introduces in distribution bar 8, realizes that the distribution of piston motion acts together with cylinder body 7, distribution bar 8, piston 9.It is provided with
The elongated shape piston 9 on central duct and side hole is that the energy of compressed air is directly converted to one zero of mechanical movement kinetic energy
Part, and this kinetic energy is passed to drill bit 16 by way of collision by it, so piston is a very crucial part；Part 7
It is integrated the cylinder body of structure for inside and outside cylinder；Part 10 is retainer ring, it can prevent piston from skidding off cylinder body in more bit change 16；
Part 13 is then to prevent drill bit 16 from falling off to open form snap ring；Part 11 has been the guide sleeve of distribution effect；Part 15 is that drill bit is driven to turn
Front connector dynamic and in upper sliding；Part 16 is columnar drill body, is that the tool for carrying out broken rock is directly contacted with rock mass.
Above-mentioned down-the-hole air hammer has following disadvantage：
1, distribution bar, valve seat and rear joint are rigidly connected with lateral pin mode, and lateral pin early stage, which is easily deformed, to be even broken, and with
The pin hole requirement on machining accuracy that lateral pin matches sum is high, and cooperation precision is not easy to guarantee, handling are inconvenient.
3, distribution bar is longer, and is provided with the biggish injection well of area, is worked using ralocatable mode, is easy to appear early fracture
Phenomenon, reliability when reducing impactor work.
4, there is more intake and exhaust road, thus cause biggish atmospheric pressure lost.
5, more distribution duct is provided on piston, air flue is transferred and distance is long, and pressure loss is big, makes it to heat treatment
Reaction is sensitive, and stress is concentrated, and works often because of the reason early damage in process and structure.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of impactor of bicavate outer sleeve structure, this snap rings
It can effectively avoid the first traditional Snap ring structure during the work time because of the cracking defect that stress is concentrated and generates, and
It can be avoided second of traditional non-stepped snap ring during the work time because of the cracking defect that stress is concentrated and generates；Effectively
The service life for extending snap ring.
In order to realize above-mentioned technical characteristic, what the purpose of this utility model was realized in：A kind of bicavate outer tube
The impactor of structure, it includes rear joint, is connected with outer tube in the rear joint；The internal sleeve of the outer tube is equipped with interior
Cylinder, the interior cylinder interior have the distribution bar by rear joint location and installation, and the inside cavity of the distribution bar is equipped with non-return valve,
Spring is installed in the inside cavity of non-return valve；Piston is installed inside the outer tube, one end of the piston and inner casing
Inner wall matches, and with the movement of piston, its other end can be slidably matched with the guide sleeve being mounted on inside outer tube；It is described outer
The end of casing is equipped with front connector, and the end face location and installation that the front connector and guide sleeve match has snap ring；It is connect before described
The inside of head is slidably installed by snap ring limit drill bit, and the impact end surface of the drill bit is contacted with the end face of piston matches
It closes, and transmits impact energy.
The outer circle of the inner casing is equipped with orientational cone-shaped surface, and the orientational cone-shaped surface is matched with the conical surface of outer tube；The distribution
The middle part of bar is equipped with support level, and the support level dress is matched with the stepped hole of inner casing；The large end face of the rear joint is logical
The precession for matching screw thread with outer tube is crossed, the large end face of distribution bar is pressed abd fixed on to the end face of inner casing, makes rear joint, distribution
Bar, inner casing and outer tube constitute rigid connection.
The valve seat and distribution bar of the non-return valve use integral structure.
The inside of the piston has only drilled through centre bore, and gas channel was machined on the outer wall of piston；The difference of piston
The diameter of axle between use arc transition.
The outer tube is internally provided with the annular housing A and annular housing B, the annular housing A of two different pore sizes
Internal diameter be less than the internal diameter of annular housing B, the outer circle of the maximum outside diameter of the annular housing A and piston cooperates；The annular chamber
The cooperation of the both ends of body B and inner casing.
Tapered face, positioning tapered face phase of the tapered face with processing on outer sleeve inner wall are machined on the guide sleeve
Cooperation, and then guide sleeve is positioned.
The impactor gas circuit is using no Zigzag type gas circuit structure.
The rear joint is fixedly linked by API screw thread its air inlet with drilling rod.
The position matched on the distribution bar with inner casing is equipped with the second O-ring.
The position that the outer tube and rear joint match is equipped with the first O-ring；The snap ring uses subdivision structure, institute
The outer circle for stating snap ring is equipped with third O-ring.
The utility model provides the shortcomings that a kind of double intracavity outer tube impactors effectively overcome existing impactor, in structure
On carried out major transformation, in contrast have the following advantages that：
1, distribution bar, inner casing, rear joint and outer tube trim designs are reasonable
On the one hand, inner casing outer circle is equipped with orientational cone-shaped surface e and matches with the conical surface d of outer tube, and support is equipped in the middle part of distribution bar
Step, and matched with the stepped hole of inner casing one end；Another side, rear joint large end face is with the rotation for matching screw thread with outer tube
Into directly the large end face of compression distribution bar promotes distribution bar, inner casing, rear joint and outer tube four on the large end face of inner casing
Part constitutes rigid connection, jumping when avoiding the work of distribution bar by above structure, and holding that can be permanent is high-precision
Cooperation, provides working efficiency.
2, distribution rod structure is reasonable
Distribution bar is an integral structure with valve seat, and distribution bar reduces diameters of axle ratio, easy to process, not variable at work
Shape and fracture effectively reduce the loss of energy, improve target efficiency so that gas distribution channels are succinctly unobstructed.
3, piston structure is reasonable
Firstly, internal piston is only machined with centre bore, drilling number is few, diameter of axle variation is smaller, can more smoothly transmit punching
Stress when device work is hit, its working life is extended；Secondly, on piston duct it is few, without duct of turning back, without elongated hole, processing
It is convenient, it is high in machining efficiency, without carrying out highly difficult deep Hole.
4, bicavate outer tube designs, and air distribution efficiency is high
Housing tube cavity is equipped with two apertures different annular housing A and annular housing B, and the internal diameter of annular housing A is small
In the internal diameter of annular housing B, the annular housing A cooperates with the major diameter of piston and the outer circle of guide sleeve respectively；The annular chamber
The cooperation of the both ends of body B and inner casing, which increases effectively impact piston work area, so that compressed gas utilization rate mentions significantly
Height, and then air distribution efficiency is improved, while ensure that target efficiency, improve energy transformation ratio.
5, guide sleeve and the design of housing tube positioning structure are reasonable
Guide sleeve is equipped with tapered face and matches with the tapered face of the positioning of outer tube, so that outer tube processing is more convenient, and
And dimensional accuracy is easy to control, reduce difficulty of processing.
6, the design of system gas circuit is reasonable
System gas circuit is unobstructed, without Zigzag type gas circuit, greatly improves pneumatic efficiency, reduces atmospheric pressure lost.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is double intracavity outer tube impactor main sectional views of the utility model.
Fig. 2 is L partial enlarged view in Fig. 1 of the utility model.
Fig. 3 is S partial enlarged view in Fig. 1 of the utility model.
Fig. 4 is annular housing A partial enlarged view in Fig. 1 of the utility model.
Fig. 5 is annular housing B partial enlarged view in Fig. 1 of the utility model.
Working state figure when Fig. 6 is double intracavity outer tube impactor strokes of the utility model.
Working state figure when Fig. 7 is double intracavity outer tube impactor shadoofs of the utility model.
Fig. 8 is existing Mission series valve free impacter main sectional view.
In figure：Rear joint 1, non-return valve 2, the first O-ring 3, spring 4, distribution bar 5, the second O-ring 6, inner casing 7, piston 8,
Outer tube 9, guide sleeve 10, third O-ring 11, snap ring 12, front connector 13, drill bit 14；
Tapered face a, the tapered face b of positioning, orientational cone-shaped surface e, conical surface d；
C ~ K is gas circuit.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
Embodiment 1：
Such as Fig. 1-7, a kind of impactor of bicavate outer sleeve structure, it includes rear joint 1, is connected in the rear joint 1
There is outer tube 9；The internal sleeve of the outer tube 9 is equipped with inner casing 7, and the inside of the inner casing 7 has by 1 location and installation of rear joint matches
The inside cavity of gas bar 5, the distribution bar 5 is equipped with non-return valve 2, is equipped with spring 4 in the inside cavity of non-return valve 2；It is described
Piston 8 is installed, one end of the piston 8 is matched with the inner wall of inner casing 7, as it is another for the movement of piston 8 inside outer tube 9
One end is slidably matched with the composition of guide sleeve 10 being mounted on inside outer tube 9；The end of the outer tube 9 is equipped with front connector
13, the end face location and installation that the front connector 13 and guide sleeve 10 match has snap ring 12；The inside of the front connector 13 passes through
The limit of snap ring 12 is slidably installed and has drill bit 14, and the impact end surface of the drill bit 14 and the end face of piston 8 are engaged, and pass
Pass impact energy.The impactor of above structure is reduced relative to existing impactor, amount of parts, obtains its structure
Simplification has been arrived, the reliability of work has been ensure that, effectively extends its service life, while its target efficiency has been obtained very well
Raising.
Further, the outer circle of the inner casing 7 is equipped with orientational cone-shaped surface e, the conical surface d phase of the orientational cone-shaped surface e and outer tube 9
Cooperation；The middle part of the distribution bar 5 is equipped with support level, and the support level dress is matched with the stepped hole of inner casing 7；After described
The large end face of distribution bar 5 is pressed abd fixed on inner casing 7 by matching the precession of screw thread with outer tube 9 by the large end face of connector 1
End face makes rear joint 1, distribution bar 5, inner casing 7 and outer tube 9 constitute rigid connection.By above-mentioned assembling structure, avoids and match
Jumping when gas bar 5 works, and the high-precision cooperation of holding that can be permanent, provide working efficiency.And then effective solution
Traditional impactor distribution bar, valve seat and rear joint is rigidly connected with lateral pin mode, and lateral pin early stage, which is easily deformed, to be even broken
Defect, and the defect that handling are inconvenient.
Further, the valve seat of the non-return valve 2 and distribution bar 5 use integral structure, the diameters of axle ratio of the distribution bar 5
Reduce.It is effectively avoided by above-mentioned diameters of axle ratio distribution bar 5 and is easy to appear early fracture phenomenon, when improving impactor work
Reliability.
Further, the inside of the piston 8 has only drilled through centre bore, and gas channel was machined on the outer wall of piston 8；
The diameter of axle variation of piston 8 is small, and arc transition is used between the different diameters of axle.The piston 8 of this structure is easy to process, processing efficiency
Height, without carrying out highly difficult deep Hole.
Further, the outer tube 9 is internally provided with the annular housing A and annular housing B of two different pore sizes, described
The internal diameter H1 of annular housing A less than annular housing B internal diameter H2, the annular housing A respectively with the major diameter and guide sleeve of piston 8
10 outer circle cooperation；The both ends of the annular housing B and inner casing 7 cooperate.
Further, such as Fig. 4-5, in the annular housing A and annular housing B, annular housing A and interior 10 outer circle of guide sleeve
It is engaged at A1, annular housing A matches at together in A2 in 8 major diameter of piston；Annular housing B in 7 both ends of inner casing respectively with its
It is matched with B1 and B2.The design increases effectively impact piston work area, so that compressed gas utilization rate greatly improves, in turn
Air distribution efficiency is improved, while ensure that target efficiency, improves energy transformation ratio.
Further, tapered face a is machined on the guide sleeve 10, the tapered face a and processing are on 9 inner wall of outer tube
The tapered face b of positioning match, and then to guide sleeve 10 position.So that outer tube 9 is processed more convenient, and make size smart
Degree is easy to control, and reduces difficulty of processing.
Further, the impactor gas circuit is using no Zigzag type gas circuit structure.Avoid existing impactor air flue turnover
And distance is long, the big problem of pressure loss.And above structure is simplified the initial stage heat treatment process of impactor.
Further, the rear joint 1 is fixedly linked by API screw thread its air inlet with drilling rod.
Further, the position matched on the distribution bar 5 with inner casing 7 is equipped with the second O-ring 6.
Further, the position that the outer tube 9 and rear joint 1 match is equipped with the first O-ring 3；The snap ring 12
Using subdivision structure, the outer circle of the snap ring 12 is equipped with third O-ring 11.
The working principle of the utility model is as follows：
To start impactor, impactor must be first transferred.When drill bit 14 and rock contact and jacks up piston and be in position shown in Fig. 1
When setting, starting preparation comes to an end.
The high pressure gas P0 introduced by the hollow duct J of rear joint, opens non-return valve 2, through distribution bar side channel K, housing
Annular chamber C to piston body surface air supply chamber D is formed with inner casing outside on the inside of pipe.High pressure gas by alternately entering gas before cylinder here
Room F and rear gas chamber G.
When return starts, piston is in position shown in Fig. 1, and the high pressure gas in annular chamber C is through piston body surface air drain D, warp
It crosses piston body table and pushes piston motion into preceding gas chamber F.In the movement of piston return, when circular passage E is closed, preceding gas chamber F
Air inlet stops, and the high pressure gas expansion in the forward gas chamber of piston continues up, behind the front end of piston and guide sleeve disengagement,
Preceding gas chamber F gas drains into bottom hole such as Fig. 6 through bit central hole I.
Piston start return movement when, the gas P of rear gas chamber G, through piston centre stomata H, bit central stomata I escape to
Bottom hole, suffered back pressure resistance very little when making piston motion；When distribution bar microcephaly, which initially enters piston, constitutes cooperation, piston
Return movement compress the gas of rear gas chamber G；It is open when piston big end moves to be formed with the interior inside wall of cylinder, high pressure gas
Enter rear gas chamber G through annular chamber C, piston body surface air drain D.Due to piston motion inertia, piston slides a distance, until entering
The high pressure gas of rear chamber G, which generates pressure, makes piston terminate return movement.
When piston stroke moves, piston moves to piston big end under the promotion of high pressure gas and opens with what the interior inside wall of cylinder was formed
Mouth turn-off transient, the channel that high pressure gas enters rear gas chamber are blocked, and piston travels forward by gas expansion, works as piston center hole
After being detached from distribution bar lower end, rear gas chamber's gas drains into bottom hole through H, I.Stroke movement is completed in Piston knocking bit tail portion at this time.
When piston starts stroke movement, the gas of preceding gas chamber F continues on through guide sleeve and bit central hole I is discharged to bottom hole；Before piston
When end enters guide sleeve, the gas of preceding gas chamber starts to compress, and piston, which moves to always, connects arc groove E, and high pressure gas enters
Preceding air cavity F, completes distribution process.
Through the above description, those skilled in the art completely can be without departing from this item utility model technical idea
In the range of, it carries out various changes and amendments and is within the protection scope of the utility model.The utility model is not use up
Matters belong to the common knowledge of those skilled in the art.
Claims (10)
1. a kind of impactor of bicavate outer sleeve structure, it includes rear joint（1）, the rear joint（1）On be connected with housing
Pipe（9）；It is characterized in that：The outer tube（9）Internal sleeve be equipped with inner casing（7）, the inner casing（7）Inside, which has, passes through rear joint
（1）The distribution bar of location and installation（5）, the distribution bar（5）Inside cavity non-return valve is installed（2）, in non-return valve（2）Chamber
Internal portion is equipped with spring（4）；The outer tube（9）Inside is equipped with piston（8）, the piston（8）One end and inner casing（7）
Inner wall match, with piston（8）Movement its other end can be mounted on outer tube（9）Internal guide sleeve（10）Sliding
Cooperation；The outer tube（9）End front connector is installed（13）, the front connector（13）And guide sleeve（10）The end matched
Face location and installation has snap ring（12）；The front connector（13）Inside pass through snap ring（12）Limit is slidably installed and has drill bit
（14）, the drill bit（14）Impact end surface and piston（8）End face be engaged, and transmit impact energy.
2. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The inner casing（7）
Outer circle be equipped with orientational cone-shaped surface（e）, the orientational cone-shaped surface（e）With outer tube（9）The conical surface（d）It matches；The distribution bar（5）
Middle part be equipped with support level, support level dress and inner casing（7）Stepped hole match；The rear joint（1）Big end
Face by with outer tube（9）The precession for matching screw thread, by distribution bar（5）Large end face be pressed abd fixed on inner casing（7）End face,
Make rear joint（1）, distribution bar（5）, inner casing（7）And outer tube（9）Constitute rigid connection.
3. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The non-return valve
（2）Valve seat and distribution bar（5）Using integral structure.
4. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The piston（8）
Inside only drilled through centre bore, in piston（8）Outer wall on be machined with gas channel；Piston（8）The different diameters of axle between
Using arc transition.
5. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The outer tube
（9）The internal diameter of the annular housing A and annular housing B, the annular housing A that are internally provided with two different pore sizes are less than annular chamber
The internal diameter of body B, the annular housing A and piston（8）Maximum outside diameter outer circle cooperation；The annular housing B and inner casing（7）'s
Both ends cooperation.
6. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The guide sleeve
（10）On be machined with tapered face（a）, the tapered face（a）With processing in outer tube（9）The tapered face of positioning on inner wall（b）Match
It closes, and then to guide sleeve（10）Positioning.
7. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The impactor gas
Road is using no Zigzag type gas circuit structure.
8. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The rear joint
（1）It is fixedly linked by API screw thread its air inlet with drilling rod.
9. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The distribution bar
（5）Upper and inner casing（7）The position matched is equipped with the second O-ring（6）.
10. a kind of impactor of bicavate outer sleeve structure according to claim 1, it is characterised in that：The outer tube
（9）And rear joint（1）The position matched is equipped with the first O-ring（3）；The snap ring（12）Using subdivision structure, the card
Ring（12）Outer circle third O-ring is installed（11）.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820204839.0U CN208106310U (en) | 2018-02-06 | 2018-02-06 | A kind of impactor of bicavate outer sleeve structure |
| CN201821691557.4U CN208934607U (en) | 2018-02-06 | 2018-02-06 | A kind of bicavate outer tube of impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820204839.0U CN208106310U (en) | 2018-02-06 | 2018-02-06 | A kind of impactor of bicavate outer sleeve structure |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821691557.4U Division CN208934607U (en) | 2018-02-06 | 2018-02-06 | A kind of bicavate outer tube of impactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208106310U true CN208106310U (en) | 2018-11-16 |
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ID=64123573
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| CN201820204839.0U Active CN208106310U (en) | 2018-02-06 | 2018-02-06 | A kind of impactor of bicavate outer sleeve structure |
| CN201821691557.4U Active CN208934607U (en) | 2018-02-06 | 2018-02-06 | A kind of bicavate outer tube of impactor |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821691557.4U Active CN208934607U (en) | 2018-02-06 | 2018-02-06 | A kind of bicavate outer tube of impactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222817A (en) * | 2018-02-06 | 2018-06-29 | 宜昌市五环钻机具有限责任公司 | A kind of impactor of bicavate outer sleeve structure |
| CN109267932A (en) * | 2018-11-21 | 2019-01-25 | 长沙黑金刚实业有限公司 | A kind of impactor |
| CN111852324A (en) * | 2020-07-28 | 2020-10-30 | 浙江开山钎具有限公司 | High wind pressure down-the-hole impacter |
-
2018
- 2018-02-06 CN CN201820204839.0U patent/CN208106310U/en active Active
- 2018-02-06 CN CN201821691557.4U patent/CN208934607U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222817A (en) * | 2018-02-06 | 2018-06-29 | 宜昌市五环钻机具有限责任公司 | A kind of impactor of bicavate outer sleeve structure |
| CN108222817B (en) * | 2018-02-06 | 2024-01-19 | 湖北五环欧科制造技术有限公司 | Impactor with double-cavity outer sleeve structure |
| CN109267932A (en) * | 2018-11-21 | 2019-01-25 | 长沙黑金刚实业有限公司 | A kind of impactor |
| CN111852324A (en) * | 2020-07-28 | 2020-10-30 | 浙江开山钎具有限公司 | High wind pressure down-the-hole impacter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN208934607U (en) | 2019-06-04 |
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