CN108505933A - A kind of reacting cycle Pneumatic immpacting down-hole hammer - Google Patents
A kind of reacting cycle Pneumatic immpacting down-hole hammer Download PDFInfo
- Publication number
- CN108505933A CN108505933A CN201810555004.4A CN201810555004A CN108505933A CN 108505933 A CN108505933 A CN 108505933A CN 201810555004 A CN201810555004 A CN 201810555004A CN 108505933 A CN108505933 A CN 108505933A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- block stamp
- core pipe
- hole hammer
- drill bit
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The present invention relates to a kind of impact down-hole hammers, and in particular to a kind of reacting cycle Pneumatic immpacting down-hole hammer.It is made of top connection, shell, spline housing, drill bit, block stamp and cylinder, and the threaded one end of shell is equipped with top connection, and the other end screw thread of shell is equipped with spline housing, and spline housing is interior to be slidably fitted with drill bit by keyway；Core pipe is installed in shell, non-return valve is equipped with by spring on the circumference of core pipe one end, block stamp is movably installed with by cylinder on the circumference of the core pipe other end, is connected for Intermittent Contact between block stamp and drill bit, flow guiding connector is provided between cylinder and top connection.The down-hole hammer can convert the kinetic energy of pressure-air to periodic Axial Shock Load power by block stamp, to improve rock-breaking drilling speed.Ground will be returned on rock core by core pipe central passage, improve the purity of rock core, reduce the pollution to surrounding enviroment.
Description
Technical field
The present invention relates to a kind of impact down-hole hammers, and in particular to a kind of reacting cycle Pneumatic immpacting down-hole hammer.
Background technology
Reacting cycle impacts down-hole hammer in the process of current Chinese economy construction, and the status shared by Rock and Soil Drilling Engineering is got over
Come more important, water supply, mineral products, municipal administration, environment, traffic and building etc. is widely used in, since it can be increased substantially
Drilling efficiency reduces construction cost, ensures construction quality, and economic benefit highly significant receives and drills industry both at home and abroad
Pay much attention to, the operation principle of reacting cycle impact down-hole hammer is to be pushed down-hole hammer work using compressed air as power, utilized punching
It hits device to act on the reciprocating impact of drill bit, to achieve the purpose that fractured rock, the rock that is broken is discharged after working with down-hole hammer
Exhaust gas be carried to ground, to achieve the purpose that borehole cleaning, deslagging, still, due to existing reacting cycle impact down-hole hammer design
There is certain deficiency, its rock-breaking drilling speed is caused to be short of, and when wind pressure machine is stopped, internal system pressure
It reduces, water flooding and landwaste etc. have an impact the reliability of its work possibly into air pressure exchange system, or even damage
Parts shorten tool life etc., therefore, it is necessary to make improvements.
Invention content
It is an object of the invention to：Offer is a kind of simple in structure, and practicability is good, by converting the kinetic energy of pressure-air to
Periodic Axial Shock Load power, to improve rock-breaking drilling speed, solving the entrance of water flooding when wind pressure machine stops causes it
The reliability of work has an impact, or even damage parts, shortens a kind of reacting cycle Pneumatic immpacting of tool life problem
Down-hole hammer.
The technical scheme is that：
A kind of reacting cycle Pneumatic immpacting down-hole hammer；It is made of top connection, shell, spline housing, drill bit, block stamp and cylinder, special
Sign is：The threaded one end of shell is equipped with top connection, and the other end screw thread of shell is equipped with spline housing, passes through key in spline housing
Slot is slidably fitted with drill bit；Core pipe is installed in shell, non-return valve is equipped with by spring on the circumference of core pipe one end, core pipe is another
Block stamp is movably installed with by cylinder on the circumference of one end, is connected for Intermittent Contact between block stamp and drill bit, cylinder and top connection
Between be provided with flow guiding connector.
Described core pipe one end extends in drill bit, is to be slidably connected between core pipe and drill bit.
C-type snap ring is provided on the drill bit.
The core pipe is diameter-changing body, and the provided circumferentially about of core pipe has reducing boss.
It is to be slidably connected between the non-return valve and core pipe.It is respectively arranged between non-return valve and core pipe and top connection close
Seal.
Contact connectio is bonded between the flow guiding connector and cylinder, flow guiding connector and cylinder are carried out by reducing boss
Axially position was provided with ebb interval between flow guiding connector and cylinder and inner walls.
The flow guiding connector is ring bodies, and intercommunicating pore is evenly equipped on the circumference of flow guiding connector；It is arranged on the cylinder
There is through-hole, cylinder boss is provided on the inner wall of through-hole.
It is interruption-like on the corresponding cylinder circumference of cylinder boss to be provided with venthole under cylinder upper vent hole and cylinder；Cylinder
Venthole is in dislocation shape setting in the axial direction under upper vent hole and cylinder.
The block stamp is diameter-changing body, and the circumferentially spaced about shape of block stamp is provided with block stamp convex platform and block stamp lower convex platform, is rushed
The upper chamber of air cylinder and lower chamber of air cylinder that block stamp convex platform and block stamp lower convex platform cooperation cylinder boss are formed are provided between hammer and cylinder.
The intercommunicating pore by cross ebb interval, upper vent hole, ventilate under cylinder respectively with upper chamber of air cylinder and lower chamber of air cylinder
Intermittent communication.
The beneficial effects of the present invention are：
The reacting cycle Pneumatic immpacting down-hole hammer is simple in structure, and practicability is good, can be by pressure-air by block stamp in the course of work
Kinetic energy is converted into periodic Axial Shock Load power, to improve rock-breaking drilling speed.By core pipe central passage by rock
Ground is returned in the heart, improves the purity of rock core, reduces the pollution to surrounding enviroment, meanwhile, by non-return valve so that wind pressure
When machine is shut down, inside top connection pressure is relatively low, and non-return valve closes and realizes sealing function by sealing ring under the action of the spring, by
This makes the interior formation of gas flow is certain to build the pressure, and the impurity such as water flooding and landwaste is effectively prevent to enter in gas flow and cause
Abrasion, and then improve the reliability and service life of the down-hole hammer.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 be Fig. 1 in A-A to cross section structure schematic diagram；
Fig. 3 is the schematic cross-sectional view of the block stamp of the present invention；
Fig. 4 is the schematic cross-sectional view of the cylinder of the present invention；
Fig. 5 is the working state schematic representation of the present invention.
In figure：1, top connection, 2, shell, 3, spline housing, 4, drill bit, 5, block stamp, 6, cylinder, 7, core pipe, 8, c-type snap ring,
9, spring, 10, non-return valve, 11, reducing boss, 12, block stamp convex platform, 13, block stamp lower convex platform, 14, cylinder boss, 15, cylinder
Upper vent hole, 16, venthole under cylinder, 17, flow guiding connector, 18, cross ebb interval, 19, intercommunicating pore, 20, upper chamber of air cylinder, 21, gas
Cylinder cavity of resorption.
Specific implementation mode
The reacting cycle Pneumatic immpacting down-hole hammer is made of top connection 1, shell 2, spline housing 3, drill bit 4, block stamp 5 and cylinder 6,
The threaded one end of shell 2 is equipped with top connection 1, and the other end screw thread of shell 2 is equipped with spline housing 3, passes through keyway in spline housing 3
It is slidably fitted with drill bit 4；C-type snap ring 8 is fixed on drill bit 4.The purpose of c-type snap ring 8 is by being carried out with the end face of spline housing 3
Intermittent Contact, to realize axial limiting to drill bit 4, drill bit 4 is unlikely to fall shaft bottom when preventing from pulling out of hole in the course of work.
Core pipe 7 is installed, core pipe 7 is diameter-changing body, and the provided circumferentially about of core pipe 7 has variable-diameter convex in the shell 2 of 4 side of drill bit
Platform 11.Non-return valve 10 is equipped with by spring 9 on the circumference of core pipe one end, is to be slidably connected between non-return valve 10 and core pipe 7；Bullet
One end of spring 9 is connected with reducing boss 11, and the other end and the non-return valve 10 of spring 9 touch connection, under the action of spring 9,
Non-return valve 10 is in close contact with top connection 1 and connects, and sealing ring is respectively arranged between non-return valve 10 and core pipe 7 and top connection 1, by
This ensures the leakproofness in work.
7 other end of core pipe extends in drill bit 4, is to be slidably connected between core pipe 7 and drill bit 4.The core pipe 7 of 4 side of drill bit
Block stamp 5 is movably installed with by cylinder 6 on circumference, block stamp 5 is reducing tubular body, and 5 sliding sleeve of block stamp is on 7 circumference of core pipe；
The circumferentially spaced about shape of block stamp 5 is provided with block stamp convex platform 12 and block stamp lower convex platform 13, is connect for interval between block stamp 5 and drill bit 4
Touch connection.
It is provided with through-hole on cylinder 6, cylinder boss 14 is provided on the inner wall of through-hole.14 corresponding cylinder 6 of cylinder boss
It is interruption-like on circumference to be provided with venthole 16 under cylinder upper vent hole 15 and cylinder；It ventilates under cylinder upper vent hole 15 and cylinder
Hole 16 is in dislocation shape setting in the axial direction.
It is provided with flow guiding connector 17 between the cylinder 6 and top connection 1 of the reacting cycle Pneumatic immpacting down-hole hammer；Flow guiding connector 17
For ring bodies, intercommunicating pore 19 is evenly equipped on the circumference of flow guiding connector 17.It is bonded contact connectio between flow guiding connector 17 and cylinder, leads
The end face for flowing interior shoulder and top connection 1 between connector 17 and cylinder 6 by shell 2 carries out axial limiting, while passing through reducing
Convex 11 carry out axially position, and ebb interval 18 was provided between 2 inner wall of flow guiding connector 17 and cylinder 6 and shell.
It is provided between the block stamp 5 and cylinder 6 of the reacting cycle Pneumatic immpacting down-hole hammer convex under block stamp convex platform 12 and block stamp
Platform 13 be engaged cylinder boss 14 formation upper chamber of air cylinder 20 and lower chamber of air cylinder 21.
Intercommunicating pore 19 by crossing ebb interval 18, cylinder upper vent hole 15, under cylinder ventilation 16 respectively with upper chamber of air cylinder 20 and
21 intermittent communication of lower chamber of air cylinder（Referring to attached drawing 1-4）.
When the reacting cycle Pneumatic immpacting down-hole hammer works, non-return valve 10 is opened under high pressure draught effect, you can realizing should
The normal work of down-hole hammer.Specially：
5 upstroke of block stamp：
As shown in Figure 1, block stamp 5 is located at lower limit position, the high pressure draught that wind pressure machine generates by double-wall drill pipe by top connection 1 after
Certain pressure is formed, overcomes spring 9 to act on so that non-return valve 10 is opened；High pressure draught is into the intercommunicating pore by flow guiding connector 17
19, ventilation 16 under ebb interval 18, cylinder is crossed to enter in lower chamber of air cylinder 21；At this point, block stamp convex platform 12 is to cylinder upper vent hole
15 and upper chamber of air cylinder 20 formed sealed condition.The high pressure draught entered in lower chamber of air cylinder 21 is acted on to 13 right side of block stamp lower convex platform
End face on, thus push block stamp 5 move upwards（Block stamp 5 slides to the left）；After 5 uplink of block stamp starts, cylinder upper vent hole 15
Gradually open, during this, when block stamp convex platform 12 moves to cylinder 14 side of boss, block stamp lower convex platform 13 simultaneously with gas
Cylinder boss 14 forms contact, and forms sealed condition to lower chamber of air cylinder 21, and upper chamber of air cylinder 20 at this time is open state, with height
Pressure gas stream constantly enters upper chamber of air cylinder 20 and acts on to the end face on 12 right side of block stamp convex platform, and block stamp 5 continues uplink, until row
Journey terminal（Referring to attached drawing 5）, during 5 uplink of block stamp, the gas that lower chamber of air cylinder 21 builds the pressure is released, in upper chamber of air cylinder 20
Gas starts to compress, and the gas of compression exits into shaft bottom flushing detritus through the gap between block stamp 5 and core pipe 7, spline gaps；
Through-hole of the landwaste of flushing through drill bit 4 and core pipe 7 returns out.Block stamp 5 continue uplink to terminal after, between block stamp 5 and core pipe 7 between
Gap is closed, and block stamp lower convex platform 13 is located under cylinder upper vent hole 15 and cylinder between venthole 16 at this time, and air-flow is only by cylinder
Upper vent hole 15 enters in upper chamber of air cylinder 20.
Downward movement：Block stamp 5 is located at upper limit position, and the high pressure draught that wind pressure machine generates is entered by cylinder upper vent hole 15
It in upper chamber of air cylinder 20 and acts on to the end face in 12 left side of block stamp convex platform, high pressure is formed with the continuous entrance of high pressure draught；
When the high pressure draught in upper chamber of air cylinder 20 reaches a certain amount of, block stamp 5 is pushed to start downward movement（It moves right）, this process
In, 5 downlink of block stamp starts venthole 16 under exhaust hood and opens, and realizes through-flow；Block stamp 5 continues traveling downwardly, when the block stamp of block stamp 5 is convex
When platform 12 is contacted with cylinder boss 14, block stamp lower convex platform 13 is disengaged with cylinder boss 14, at this point, block stamp convex platform 12 is to gas
Cylinder epicoele 20, which is formed, to be blocked, and lower chamber of air cylinder 21, which is formed, to be opened, the gas entered by venthole 16 under cylinder upper vent hole 15 and cylinder
Body is acted on to the end face in 13 left side of block stamp lower convex platform, and block stamp 5 continues traveling downwardly to terminal, replys initial position.
During 5 downlink of block stamp, the gas that upper chamber of air cylinder 20 builds the pressure is released, and the gas in lower chamber of air cylinder 21 starts to press
Contracting, the gas of compression exit into shaft bottom flushing detritus through spline gaps；Through-hole of the landwaste of flushing through drill bit 4 and core pipe 7 returns
Go out.After block stamp 5 continues traveling downwardly to terminal, spline gaps are closed, and block stamp convex platform 12 is gentle to cylinder upper vent hole 15 at this time
Cylinder epicoele 20 forms sealed condition, and air-flow is only entered by venthole under cylinder 16 in lower chamber of air cylinder 21.
When wind pressure machine is stopped, 1 inside pressure of top connection is relatively low, non-return valve 10 closed under the action of spring 9 and by
The sealing function that sealing ring is realized so that intercommunicating pore 19 crosses formation one inside the gas flow that ebb interval 18 and venthole are formed
Fixed builds the pressure, can effectively prevent the impurity such as water flooding and landwaste enter in gas flow and caused by wear, and then improve this
The reliability and service life of down-hole hammer.
Claims (10)
1. a kind of reacting cycle Pneumatic immpacting down-hole hammer；It is by top connection（1）, shell（2）, spline housing（3）, drill bit（4）, block stamp
（5）And cylinder（6）It constitutes, it is characterised in that：Shell（2）Threaded one end top connection is installed（1）, shell（2）The other end
Screw thread is equipped with spline housing（3）, spline housing（3）It is interior that drill bit is slidably fitted with by keyway（4）；Shell（2）Core pipe is inside installed
（7）, core pipe（7）Pass through spring on the circumference of one end（9）Non-return valve is installed（10）, core pipe（7）Pass through on the circumference of the other end
Cylinder is movably installed with block stamp（5）, block stamp（5）With drill bit（4）Between for Intermittent Contact connect, cylinder（6）With top connection（1）It
Between be provided with flow guiding connector（17）.
2. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 1；It is characterized in that：The core pipe（7）One
End extends to drill bit（4）It is interior, core pipe（7）With drill bit（4）Between to be slidably connected.
3. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 2；It is characterized in that：The drill bit（4）On
It is provided with c-type snap ring（8）.
4. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 2；It is characterized in that：The core pipe（7）For
Diameter-changing body, core pipe（7）Provided circumferentially about have reducing boss（11）.
5. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 1；It is characterized in that：The non-return valve（10）
With core pipe（7）Between to be slidably connected；Non-return valve（10）With core pipe（7）And top connection（1）Between be respectively arranged with sealing ring.
6. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 1；It is characterized in that：The flow guiding connector
（17）With cylinder（6）Between for fitting connect, flow guiding connector（17）And cylinder（6）Pass through reducing boss（11）Carry out axis
To positioning, flow guiding connector（17）And cylinder（6）With shell（2）Ebb interval was provided between inner wall（18）.
7. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 6；It is characterized in that：The flow guiding connector
（17）For ring bodies, flow guiding connector（17）Circumference on be evenly equipped with intercommunicating pore（19）；The cylinder（6）On be provided with through-hole,
Cylinder boss is provided on the inner wall of through-hole（14）.
8. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 7；It is characterized in that：Cylinder boss（14）It is corresponding
Cylinder（6）It is interruption-like on circumference to be provided with cylinder upper vent hole（15）With venthole under cylinder（16）；Cylinder upper vent hole
（15）With venthole under cylinder（16）It is in dislocation shape setting in the axial direction.
9. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 1；It is characterized in that：The block stamp（5）For
Diameter-changing body, block stamp（5）Circumferentially spaced about shape be provided with block stamp convex platform（12）With block stamp lower convex platform（13）, block stamp（5）With gas
Cylinder（6）Between be provided with block stamp convex platform（12）With block stamp lower convex platform（13）Coordinate cylinder boss（14）The upper chamber of air cylinder of formation
（20）And lower chamber of air cylinder（21）.
10. a kind of reacting cycle Pneumatic immpacting down-hole hammer according to claim 6；It is characterized in that：The intercommunicating pore
（19）By crossing ebb interval（18）, cylinder upper vent hole（15）, ventilate under cylinder（16）Respectively with upper chamber of air cylinder（20）And cylinder
Cavity of resorption（21）Intermittent communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555004.4A CN108505933A (en) | 2018-06-01 | 2018-06-01 | A kind of reacting cycle Pneumatic immpacting down-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555004.4A CN108505933A (en) | 2018-06-01 | 2018-06-01 | A kind of reacting cycle Pneumatic immpacting down-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108505933A true CN108505933A (en) | 2018-09-07 |
Family
ID=63402629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810555004.4A Pending CN108505933A (en) | 2018-06-01 | 2018-06-01 | A kind of reacting cycle Pneumatic immpacting down-hole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108505933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344754A (en) * | 2019-08-28 | 2019-10-18 | 吉林大学 | A kind of hydraulic impacter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6125952A (en) * | 1998-03-03 | 2000-10-03 | Sandvik Ab | Percussive down-the-hole hammer and a drill bit therefor |
| CN104329028A (en) * | 2014-11-16 | 2015-02-04 | 吉林大学 | Split type inner jet reverse circulation rotary percussion drill bit |
| CN107642327A (en) * | 2017-10-30 | 2018-01-30 | 吉林大学 | A kind of enclosed positive and negative circulation impact device |
| CN108086899A (en) * | 2018-01-24 | 2018-05-29 | 长江大学 | One kind pneumatically rocks rock fracture in dynamic indentation boring bar tool |
| CN208502650U (en) * | 2018-06-01 | 2019-02-15 | 长江大学 | A kind of reacting cycle Pneumatic immpacting down-hole hammer |
-
2018
- 2018-06-01 CN CN201810555004.4A patent/CN108505933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6125952A (en) * | 1998-03-03 | 2000-10-03 | Sandvik Ab | Percussive down-the-hole hammer and a drill bit therefor |
| CN104329028A (en) * | 2014-11-16 | 2015-02-04 | 吉林大学 | Split type inner jet reverse circulation rotary percussion drill bit |
| CN107642327A (en) * | 2017-10-30 | 2018-01-30 | 吉林大学 | A kind of enclosed positive and negative circulation impact device |
| CN108086899A (en) * | 2018-01-24 | 2018-05-29 | 长江大学 | One kind pneumatically rocks rock fracture in dynamic indentation boring bar tool |
| CN208502650U (en) * | 2018-06-01 | 2019-02-15 | 长江大学 | A kind of reacting cycle Pneumatic immpacting down-hole hammer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344754A (en) * | 2019-08-28 | 2019-10-18 | 吉林大学 | A kind of hydraulic impacter |
| CN110344754B (en) * | 2019-08-28 | 2023-12-26 | 吉林大学 | Hydraulic impactor |
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