CN108756730A - A kind of down-the-hole top hammer - Google Patents
A kind of down-the-hole top hammer Download PDFInfo
- Publication number
- CN108756730A CN108756730A CN201810711474.5A CN201810711474A CN108756730A CN 108756730 A CN108756730 A CN 108756730A CN 201810711474 A CN201810711474 A CN 201810711474A CN 108756730 A CN108756730 A CN 108756730A
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- air
- hole
- piston
- outer tube
- connector
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- 238000009826 distribution Methods 0.000 claims abstract description 131
- 239000011435 rock Substances 0.000 claims abstract description 46
- 238000009527 percussion Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000003519 ventilatory effect Effects 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 10
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 208000004141 microcephaly Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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
A kind of down-the-hole top hammer, including outer tube, piston, distribution bar, impact connector and rock bit；The upper end of the outer tube is equipped with air inlet；The lower end of outer tube connects rock bit by impacting connector；The impact connector is equipped with the connector venthole being connected with the interior hole nozzle of rock bit；The distribution bar is fixed in outer tube, and the upper end outer wall of the distribution bar is in contact fixation with the inner wall of outer tube；The lower end of the distribution bar stretches in the connector venthole of impact connector, and the lower end outer wall of distribution bar and the connector venthole inner wall of impact connector are engaged；The piston is set between outer tube and distribution bar, and the piston can be along the axial direction up and down reciprocatingly ballistic motion of outer tube, and the bottom face of the piston is as the percussion face for acting on impact connector.The down-the-hole top hammer of the present invention is realized in pressure 6-7.5bar, has higher piercing efficiency, higher service life.
Description
Technical field
The present invention relates to belong to oil exploration, mining apparatus field, and in particular to a kind of down-the-hole top hammer is suitable for each
The blast hole of type mining.
Background technology
Down-the-hole top hammer is on the rock breaking mechanism in rock bit based on spinning scraping, and in the rear end face of rock bit profit
The piston driven with wind pressure gives reciprocal reasonable impact, to change and enhance a kind of completely new broken rock machine of its rock breaking efficiency
Reason.It is by the connection of the impact connector of down-the-hole top hammer, by the impact energy of piston be converted in the form of stress wave and effectively
Be transmitted to rock bit distribution each cutting alloy tooth on so that the rock drilling piercing efficiency of rock bit significantly promoted one
The advanced optimizing disposition technology of kind.
The design of down-the-hole top hammer can meet the rock bit configuration of different size series, only according to the size in rock drilling aperture
And the chisel property of rock, to select to calculate quality, the size of structure stroke, ballistic work and frequency of piston.
Country's mining industry is not yet reported that using rock bit client in relation to the information using down-the-hole top hammer, in Ao Zhoukuang at present
Industry, Atlas and local manufacturing enterprises DTA start experimental verification several years ago, are continuously improved by the product more than 2 years, have been enter into small quantities of
It measures the production and application stage, piercing efficiency improves 30-50%, has obtained the approval and praise of client.But pass through international marketing channel
Go deep into client's understanding and investigation and networking technology information is collected, producer's product sample structure map analysis compares, structure is set
Meter still has problem, and disadvantage includes：（1）Inner body is more and complicated, such as cylinder, outer tube and impact connector, makes
Manufacturing cost is excessively high and use reliability reduces；（2）Room exhaust gas circuit is long before and after piston and exhaust is insufficient, especially
It is influenced by shank external splines side channel and radial inclined hole, certain interference with distribution bar centre bore vent gas direction phase mutual
Performance and deslagging effect；（3）Design of Piston Structure has certain defect, includes the reasonability of piston weight so that piston rushes
It hits work(not matching that with rock bit structure and running parameter, leads to rock bit internal bearings ball initial failure, carbide button
The defects of premature wear.
Invention content
It is special using what is accumulated for many years in order to overcome fault of construction existing for above-mentioned existing down-the-hole top hammer and performance parameter insufficient
Industry knowledge and modernization computer simulation emulation computational methods, carry out optimized integral structure, provide one kind in pressure 6-7.5bar
In the case of, there is higher piercing efficiency, the novel down-the-hole top hammer of higher service life.
In order to achieve the above objectives, the technical solution adopted by the present invention is：
A kind of down-the-hole top hammer, including outer tube, piston, distribution bar, impact connector and rock bit；The upper end of the outer tube
Equipped with air inlet；The lower end of the outer tube connects rock bit by impacting connector；Specifically, the rock bit connects with impact
Head is fixedly connected, and the impact connector is that spline couples with outer tube, so that outer tube and impact connector are around outer tube axis
To direction of rotation on be sequentially connected, and impact connector with respect to outer tube with along outer tube axial direction mobility；Also, it is described
Impact connector is equipped with the connector venthole being connected with the interior hole nozzle of rock bit.
The distribution bar is fixed in outer tube, and the upper end outer wall of the distribution bar is in contact admittedly with the inner wall of outer tube
It is fixed；The lower end of the distribution bar stretches in the connector venthole of impact connector, and the lower end outer wall of distribution bar and impact connector
Connector venthole inner wall be engaged；The distribution bar upper edge is axially arranged with a centre bore, the centre bore of the distribution bar it is upper
End is connected to the air inlet, and lower end is connected to the connector venthole of impact connector；The bar portion of the distribution bar is radially set
There are the first air distribution hole and the second air distribution hole.
The piston is set between outer tube and distribution bar, and the piston can up and down reciprocatingly be rushed along the axial direction of outer tube
Movement is hit, is isolated to form one first gas chamber at the top of piston with this, is isolated to form one second gas chamber in the bottom of piston；It is described
Opened up on piston or piston and outer sleeve inner wall between be formed with the first gas chamber inlet channel, opened up on the piston or piston with it is outer
Be formed with the first gas chamber between internal surface of sleeve pipe and unload gas channel, opened up on the piston or piston and outer sleeve inner wall between be formed with second
Gas chamber inlet channel；Opened up on the piston or piston and outer sleeve inner wall between be formed with the second gas chamber and unload gas channel；Also, institute
The bottom face of piston is stated as the percussion face for acting on impact connector.
In the operating condition, compressed air divides two-way, a routing centre bore direct by centre bore of the air inlet through distribution bar
Into the connector venthole of impact connector, constantly supplies to the interior hole nozzle of rock bit, formed all the way to tooth with this always
Take turns the independent gas supply channel of drill bit；Another way provides kinetic energy for the reciprocating motion of the pistons, with stroke state and return
State：When piston is under stroke state, described first gas chamber inlet channel one end is connected to the first air distribution hole, other end connection
First gas chamber, with this compressed gas through air inlet, the centre bore of distribution bar, the first air distribution hole, the first gas chamber inlet channel pair
One gas chamber is inflated；Second gas chamber unloads gas passage end and is connected to the second gas chamber, the connector of other end connection impact connector
Venthole carries out the second gas chamber with this to unload gas；At the end of piston stroke, piston is with its percussion face impact connector
Complete ballistic motion；When piston is under return state, described second gas chamber inlet channel one end is connected to the second air distribution hole, another
One end is connected to the second gas chamber, with this compressed gas through air inlet, the centre bore of distribution bar, the second air distribution hole, the second gas chamber air inlet
The second gas chamber of channel pair is inflated；First gas chamber unloads gas passage end and is connected to the first gas chamber, and other end connection impact connects
The connector venthole of head, carries out the first gas chamber with this to unload gas.
The further improved technical solution of above-mentioned technical proposal is as follows：
1, preferably：The piston is equipped with the first radial hole and the second radial hole through internal and external walls, the work
It fills in and is equipped with the first air channel and the second air channel being connected respectively with the first radial hole and the second radial hole between outer tube,
And one end of first air channel is connected to the first radial hole, the other end is connected to the first gas chamber, first air channel and the
Two air channels are not connected to mutually；The first ring for being connected to the second air channel and the second gas chamber is equipped between the piston and outer tube
Shape gas channel；The second annular air-flow path being connected with first radial hole is equipped between the piston and distribution bar；
The lower end outer wall of the distribution bar is equipped with the air guide channel of connection the second annular air-flow path and connector venthole；
First air channel, the first radial hole, the second annular air-flow path and air guide channel, which are sequentially connected, logical constitutes described the
One gas chamber unloads gas channel；First air distribution hole, the first radial hole and the first air channel are sequentially connected logical composition first gas
Room inlet channel；Second gas chamber, the second annular air-flow path and air guide channel are sequentially connected logical composition second gas chamber
Unload gas channel；Second air distribution hole, the second radial hole, the second air channel and first annular gas channel are sequentially connected logical composition
The second gas chamber inlet channel.
2, preferably：The upper end outer wall of the distribution bar and the inner wall of outer tube are sealed by a sealing ring to be coordinated
Connection, and distribution bar is fixedly connected by the end by a pin with outer tube.
3, preferably：Be additionally provided with non-return valve in the outer tube, the non-return valve include check valve body, with it is inverse
The only check valve seat and the spring between check valve body and check valve seat of valve body connection；The non-return valve passes through check
Valve seat is fixedly installed in the top of the distribution bar；The non-return valve is for air inlet described in one-way sealing.
4, preferably：The air guide channel is the air slot or air guide along distribution bar lower end centre bore outer shroud axial direction
Hole.
5, preferably：It is additionally provided with guide sleeve, the upper end of the guide sleeve between the outer tube and impact connector
Above the upper end of impact connector.
6, preferably：Regulating the qi flowing in the channels plug is equipped in the centre bore of distribution bar bottom end, for adjusting distribution bar center
The size of hole ventilatory capacity.
7, preferably：The position that the non-return valve is contacted with air inlet is equipped with cushion rubber.
8, preferably：The quantity of first air distribution hole is one or more, the quantity of first radial hole
And position is corresponding with the quantity of the first air distribution hole and position, and the aperture phase in the aperture of the first radial hole and the first air distribution hole
Match.The quantity of second air distribution hole is one or more, the quantity of second radial hole and position and the second air distribution hole
Quantity and position are corresponding, and the aperture of the second radial hole and the aperture of the second air distribution hole match.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
1. the present invention can be realized in pressure 6-7.5bar, there is higher piercing efficiency, higher service life.
2. the two-way ventilation device of distribution bar：Total gas supply of air compressor machine is divided into two-way after entering distribution bar, all the way through distribution
The centre bore of bar flows directly into the connector venthole of impact connector；The first distribution that another way tolerance passes through distribution bar bar portion radial direction
Hole is intermittently connected to the air distribution system for constituting piston with the first radial hole and the second air distribution hole respectively with the second radial hole, and driving is lived
Fill in reciprocating impact movement, and the process discharge gas by air guide channel also imports impact connector centre bore, jointly into
Enter the interior hole nozzle of rock bit to be easily discharged out of the hole to clear up a large amount of rock slags；This two-way ventilation device air-flow by route it is short and
Amount foot, deslagging excellent result.
3, the structure design of piston, the size of the ballistic work of piston will determine the success or failure of design, and the size of ballistic work exists
Bore diameter, air compressor machine are calmed the anger to be fixed and related with piston weight with air consumption one, according to the special construction of rock bit and broken
Rock Analysis on Mechanism research, under the impact strength basis that can be born with rock bit inner bearing ball, it should be designed as small impact
Work(and high frequency time are advisable, and therefore, only reduce piston weight and could solve it using piston macropore routing method, to ensure work
The service life and functional reliability of plug and cone bit bearing ball.
4, the position design of regulating the qi flowing in the channels plug, regulating the qi flowing in the channels plug are adjusted according to the lithology of different user working condition and rock
The size of volume of air supply, adjust in principle its bore size reach the deslagging that can meet different condition and make consumption at
This reduction is preferred, and design installation site determines the convenience and reliability of adjustment again, and position is selected in distribution bar orifice end endoporus i.e.
It can reach design requirement.
5, overall construction design uses valveless without air cylinder structure, the especially fixed form of distribution bar, in distribution bar
Front end increase positioning outer circle, by its by radial axis pin and sealing ring assembling by it flexibly, be accurately located in outer tube
In endoporus so that distribution bar and the dynamic cooperation of the piston that high speed moves back and forth not only there is high-precision to coordinate, but also strong with high connection
Degree, while also there is flexibility so that functional reliability greatly promotes.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of the specific embodiment of the invention.
Attached drawing 2 is the structural schematic diagram of specific embodiment of the invention distribution bar.
Attached drawing 3 is the schematic cross-sectional view in the faces A-A in Fig. 2.
Attached drawing 4 is the structural schematic diagram of specific embodiment of the invention piston.
In the figures above：1, rock bit；2, interior hole nozzle；3, connector is impacted；4, connector venthole；5, first is radial
Hole；6, the first air channel；7, the first air distribution hole；8, outer tube；9, spring；10, cushion rubber；11, air inlet；12, top connection；13,
Check valve body；14, check valve seat；15, pin；16, distribution bar；17, the first gas chamber；18, the second air distribution hole；19, the second diameter
Xiang Kong；20, the second air channel；21, piston；22, first annular gas channel；23, the second annular air-flow path；24, the second gas
Room；25, guide sleeve；26, regulating the qi flowing in the channels plug；27, retaining ring；28, lower contact；29, Large central aperture；30, small centre bore；31, air guide is logical
Road.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment：
Refering to fig. 1 to Fig. 4, a kind of down-the-hole top hammer, including outer tube 8, non-return valve, piston 21, distribution bar 16, impact connector 3, on
Connector 12, lower contact 28, guide sleeve 25, retaining ring 27 and rock bit 1；The upper and lower side of the outer tube 8 is fixedly attached respectively
In in top connection 12 and lower contact 28, it is preferable that solid with the upper and lower side of outer tube 8 respectively by screwed upper lower contact
It connects；The upper lower contact is all hollow form, and the centre bore of wherein top connection 12 is air inlet；The rock bit 1 passes through punching
Connector 3 is hit in the lower contact 28 of the lower end of outer tube 8, the rock bit 1 is fixedly connected with impact connector 3, preferably
Ground is fixedly connected by the impact connector 3 with API inside tapered threads with the drilling rod of the rock bit 1 with API outer cone threads；
The outer circle spline of the impact connector 3 couples with the inner circle spline fitted of lower contact 28, so that outer tube 8 exists with impact connector 3
It is sequentially connected on the direction of rotation axial around outer tube 8, and impact connector 3 with respect to outer tube 8 to have along the axial work of outer tube 8
Dynamic degree；So that impact connector 3 not only can be around its axial rotation motion, but also axial micro can be moved along it；Also, the impact
Connector 3 is equipped with the connector venthole 4 being connected with the interior hole nozzle 2 of rock bit 1.The guide sleeve 25 is set to impact connector
Between 3 and outer tube 8, the slightly higher upper end for impact connector 3 in upper end of the guide sleeve 25；The retaining ring 27, which is set to down, to be connect
Between first 28 and guide sleeve 25, for fixing lower contact 28.
The distribution bar 16 is fixed in outer tube 8, and the upper end outer wall of the distribution bar 16 is logical with the inner wall of outer tube 8
It crosses a pair of of sealing ring sealing to be connected, and distribution bar 16 is fixed in top connection 12 by a pin 12, the distribution
The lower end of bar 16 stretches in the connector venthole 4 of impact connector 3, and the lower end outer wall of distribution bar 16 connects with connector 3 is impacted
Head 4 inner wall of venthole is engaged；16 upper edge of distribution bar is axially arranged with a centre bore, specifically, the distribution bar 16
Centre bore includes the Large central aperture 29 being located above and underlying small centre bore 30, the upper end of the Large central aperture 29 and institute
The centre bore connection of top connection 12 is stated, the lower end of the Large central aperture 29 is connected to the upper end of small centre bore 30, the small center
The lower end in hole 30 is connected to the connector venthole 4 of impact connector 3；Preferably, in the small centre bore 30 of 16 bottom end of distribution bar
Equipped with regulating the qi flowing in the channels plug 26, the size for adjusting 16 centre bore ventilatory capacity of distribution bar；The bar portion Large central aperture 29 of the distribution bar 16
Radially it is equipped with the first air distribution hole 7 and the second air distribution hole 18.
Non-return valve is additionally provided in the outer tube 8, the non-return valve is for air inlet 11 described in one-way sealing, the check
Valve include check valve body 13, the check valve seat 14 being connect with check valve body 13 and be set to check valve body 13 and check valve seat
Spring 9 between 14；The non-return valve is fixedly installed in the top of the distribution bar 16 by check valve seat 14；Preferably, institute
It states the position that non-return valve is contacted with air inlet 11 and is equipped with cushion rubber 10.
The piston 21 is set between outer tube 8 and distribution bar 16, and the piston 21 can be in the axial direction of outer tube 8
Lower reciprocating impact movement, is isolated to form one first gas chamber 17, is isolated to be formed in the bottom of piston 21 with this at the top of piston 21
One second gas chamber 24；Opened up on the piston 21 or 8 inner wall of piston and outer tube between be formed with the first gas chamber inlet channel, it is described
Opened up on piston 21 or 8 inner wall of piston 21 and outer tube between be formed with the first gas chamber and unload gas channel, opened up on the piston 21 or
It is formed with the second gas chamber inlet channel between 8 inner wall of piston 21 and outer tube；It is opened up on the piston 21 or piston 21 and outer tube 8
It is formed with the second gas chamber between inner wall and unloads gas channel；Also, the bottom face of the piston 21 is as the impact for acting on impact connector 3
Acting surface.
The piston 21 is equipped with the first radial hole 5 and the second radial hole 19 through internal and external walls, first distribution
The quantity in hole 7 is one or more, the quantity of first radial hole 5 and the quantity and position phase of position and the first air distribution hole 7
It is corresponding, and the aperture 5 of the first radial hole and the aperture of the first air distribution hole 7 match；The quantity of second air distribution hole 18 is one
A or multiple, the quantity of second radial hole 19 and position are corresponding with the quantity of the second air distribution hole 18 and position, and second
The aperture of radial hole 19 and the aperture of the second air distribution hole 18 match；It should be noted that：First air distribution hole 7 and the second air distribution hole
18 particular number is how many and pore size can need flexible design according to practical ventilatory capacity；The piston 21 and outer tube 8 it
Between be equipped with the first air channel 6 and the second air channel 20 that are connected respectively with the first radial hole 5 and the second radial hole 19, and it is described
One end of first air channel 6 is connected to the first radial hole 5, and the other end is connected to the first gas chamber 17, first air channel 6 and second
Air channel 20 is not connected to mutually；It is equipped between the piston 21 and outer tube 8 for being connected to the second air channel 20 and the second gas chamber 24
First annular gas channel 22；The to be connected with first radial hole 5 is equipped between the piston 21 and distribution bar 16
Second ring gas channel 23；The lower end outer wall of the distribution bar 16 is equipped with the second annular air-flow path of connection 23 and connector venthole
4 air guide channel 31, the air guide channel 31 are the air slot or air guide along small 30 outer shroud of the centre bore axial direction in 16 lower end of distribution bar
Hole, refering to Fig. 3, the air guide channel of the present embodiment is the petal-shaped air slot that 6 air slot annulars are uniformly constituted；Described first is logical
Air drain 6, the first radial hole 5, the second annular air-flow path 23 and air guide channel 31 are sequentially connected logical composition first gas chamber and unload
Gas channel；First air distribution hole 7, the first radial hole 5 and the first air channel 6 are sequentially connected logical composition the first gas chamber air inlet
Channel；Second gas chamber 24, the second annular air-flow path 23 and air guide channel 31 are sequentially connected logical composition second gas chamber
Unload gas channel；Second air distribution hole 18, the second radial hole 19, the second air channel 20 and first annular gas channel 22 phase successively
Connection constitutes the second gas chamber inlet channel.
The detailed operation principle of inventive piston ballistic motion is as follows：
When 1, opening revolution down-the-hole top hammer work, it is vertically put down first, when rock bit 1 and rock contact, beam worker
Make to come to an end, the state of down-the-hole top hammer can participate in Fig. 1 at this time.
2, compressed gas is introduced by 12 centre bore of top connection, check valve spring 7 is pressed under the action of compression pressure
Contracting, compressed gas enters the Large central aperture 29 of distribution bar 16 from 14 both sides gap of check valve seat, through the second air distribution hole 18, the second diameter
To hole 19, the second air channel 20 and first annular gas channel 22, into the second gas chamber 25, thus compressed gas is completed into work
Fill in the intake process of 21 second gas chambers 24.
3, when 21 return of piston starts, piston 21 is in position shown in Fig. 1, after the second gas chamber 24 is full of compressed gas,
And piston 21 is pushed to start to move upwards, and in 21 return trip of piston, when first annular gas channel 22 is closed, the second gas
24 air inlet of room stops, and piston 21 is continued up by the expansion of calming the anger in the second gas chamber 24, when the microcephaly of piston 21 impacts
After lower face is disengaged with guide sleeve 8,24 gas of the second gas chamber is ventilated through the second annular air-flow path 23, air guide channel 31, connector
Hole 4, interflow enter hole nozzle 2 in rock bit 1 and drain into bottom hole for deslagging.
At the same time the gas of 21 first gas chamber 17 of piston is through the first air channel 6, the first radial hole 5, into the second annular
Gas channel 23, then enter hole nozzle 2 in rock bit 1 through the interflow of air guide channel 31 and escape to bottom hole.
Suffered back pressure resistance very little when being moved due to piston 21, when the outer end face of piston 21 closes the first radial hole 5
When closing, the movement of piston 21 makes the gas of the first gas chamber 17 be compressed；When the first air distribution hole 7 and 21 first radial hole 5 of piston
When connection, compressed gas enters the first gas chamber 17 through the first radial hole 5, the first air channel 6；Due to the inertia of piston 21, piston
21 continue to slide a distance, until the compressed gas strength for entering the first gas chamber 17 hinders and slide after a small distance the
The airtight vacuum air cushion formed in one gas chamber 17 forces piston to terminate return movement.
First air channel 6, the first radial hole 5, the second annular air-flow path 23 and air guide channel 31 are sequentially connected logical
It constitutes first gas chamber and unloads gas channel；Radial 5 holes of first air distribution hole 7, first and the first air channel 6 are sequentially connected logical structure
At the first gas chamber inlet channel；Second gas chamber 24, the second annular air-flow path 23 and air guide channel 31 are sequentially connected
Logical composition second gas chamber unloads gas channel；Second air distribution hole 18, the second radial hole 19, the second air channel 20 and the first ring
Shape gas channel 22 is sequentially connected logical composition the second gas chamber inlet channel.
4, when 21 stroke movement of piston, 21 upper surface of piston is under vacuum air cushion and the effect of the compressed gas of entrance, high speed
When moving to the first radial hole 5 and the closing of the first air distribution hole 7, the channel that compressed gas enters the first gas chamber 17 is closed, piston
21 move downward by gas expansion, when 21 first radial hole 5 of piston is gradually connected to the second annular air-flow path 23, the first gas
Gas in room 17 starts through the first air channel 6, the first radial hole 5, into the second annular air-flow path 23, then through air guide channel
31 flow into connector venthole 4, are compiled in hole nozzle 2 in rock bit 1 together and drain into bottom hole for blowing slag.
Due to the inertia of piston 21, piston continues to move downward, although by enter the second gas chamber 24 compressed gas by
Step is reinforced hindering, but continues to slow down movement downwards, after 21 lower face of piston, which enters guide sleeve 25, coordinates endoporus a distance,
21 movement velocity of piston appoints and its 3 upper end of effective coast impact impact connector is so relied on to complete stroke although being reduced rapidly
Movement.At the same time, compressed gas also completes the exhaust of the air inlet and the first gas chamber 17 of 21 second gas chamber 24 of piston, i.e., second
The beginning of the return movement of reciprocating motion.
For above-described embodiment, the present embodiment is explained further and issuable variation is described as follows：
1, in above-described embodiment：The air guide channel 31 be along small 30 outer shroud of the centre bore axial direction in 16 lower end of distribution bar air slot or
Gas port, the air slot or gas port its number under the premise of meeting ventilatory capacity requirement can be 1；It can also be uniformly distributed in
The multigroup petal slot or gas port of centre bore outer toroid, number can be 2,3,4,5,6,7,8,9 etc.；Fig. 3 gives 6 and leads
31 schematic diagram of air guide channel for the petal-like structures that air drain is uniformly constituted, but it's not limited to that in practical application；Certainly also may be used
Not to be equally distributed multigroup air slot or gas port, those skilled in the art can be according to actual conditions flexible design, only
Will the air guide channel 31 meet ventilatory capacity requirement.
2, in above-described embodiment：The upper and lower side of the outer tube 8 is affixed by screw thread and upper lower contact respectively, and passes through
Impact connector 3 with API inside tapered threads is fixedly connected with the drilling rod of the rock bit 1 with API outer cone threads；It is intended only as
A kind of preferred embodiment of the specific embodiment of the invention, but not limited to this, and those skilled in the art can also be solid using other
Determine connection type, the range covered contained by the present invention can not be limited with this.
3, in above-described embodiment：This 8 structure of outer tube with upper lower contact that the present embodiment provides, is intended only as one
Kind preferable scheme, can also top connection 12 combined with outer tube 8 or lower contact 28 is combined with outer tube 8, top connection 12 or under
Connector 28 can regard a part for outer tube 8 as, using the most reasonable need of 8 structure of which kind of outer tube as the case may be come
It determines.
4, in above-described embodiment：The bar portion Large central aperture 29 of the distribution bar 16 is radially provided with the first air distribution hole 7 and
Two air distribution holes 18, referring to Fig.2, the first air distribution hole 7 and the second air distribution hole 18 are practical on same circular cross-section in the present embodiment
Periphery hole, effect is substantially identical, is only readily appreciated that for it and facilitates and define intentionally, but can not limit the present invention with this
The range of contained lid.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of down-the-hole top hammer, it is characterised in that：Including outer tube（8）, piston（21）, distribution bar（16）, impact connector（3）With
And rock bit（1）；
The outer tube（8）Upper end be equipped with air inlet（11）；The outer tube（8）Lower end pass through impact connector（3）Connection
Rock bit（1）；Specifically, the rock bit（1）With impact connector（3）It is fixedly connected, and the impact connector（3）With housing
Pipe（8）Couple for spline, so that outer tube（8）With impact connector（3）Around outer tube（8）The company of transmission on axial direction of rotation
It connects, and impacts connector（3）Opposite outer tube（8）With along outer tube（8）Axial mobility；Also, the impact connector（3）
It is equipped with and rock bit（1）Interior hole nozzle（2）The connector venthole being connected（4）；
The distribution bar（16）It is fixed at outer tube（8）It is interior, the distribution bar（16）Upper end outer wall and outer tube（8）It is interior
Wall is in contact fixation；The distribution bar（16）Lower end stretch to impact connector（3）Connector venthole（4）It is interior, and distribution bar
（16）Lower end outer wall with impact connector（3）Connector venthole（4）Inner wall is engaged；The distribution bar（16）On in an axial direction
Equipped with a centre bore, the distribution bar（16）Centre bore upper end and the air inlet（11）Connection, lower end and impact connector
（2）Connector venthole（4）Connection；The distribution bar（16）Bar portion radially be equipped with the first air distribution hole（7）With the second distribution
Hole（18）；
The piston（21）Set on outer tube（8）With distribution bar（16）Between, and the piston（21）It can be along outer tube（8）'s
Axial up and down reciprocatingly ballistic motion, with this in piston（21）Top be isolated to form one first gas chamber（17）, in piston（21）'s
Bottom is isolated to form one second gas chamber（24）；The piston（21）On open up or piston（21）With outer tube（8）It is formed between inner wall
There are the first gas chamber inlet channel, the piston（21）On open up or piston（21）With outer tube（8）The first gas is formed between inner wall
The room channels Xie Qi, the piston（21）On open up or piston（21）With outer tube（8）It is logical that the second gas chamber air inlet is formed between inner wall
Road；The piston（21）On open up or piston（21）With outer tube（8）It is formed with the second gas chamber between inner wall and unloads gas channel；Also,
The piston（21）Bottom face act on impact connector（3）Percussion face；
In the operating condition, compressed air is by air inlet（11）Through distribution bar（16）Centre bore, divide two-way, a routing centre bore
It is directly entered impact connector（3）Connector venthole（4）, always constantly to rock bit（1）Interior hole nozzle（2）Gas supply,
It is formed all the way to rock bit with this（1）Independent gas supply channel；Another way provides kinetic energy for the reciprocating motion of the pistons, is allowed to
With stroke state and return state：
Work as piston（21）It is under stroke state, described first gas chamber inlet channel one end is connected to the first air distribution hole（7）, another
The first gas chamber of end connection（17）, with this compressed gas through air inlet（11）, distribution bar（16）Centre bore, the first air distribution hole（7）,
First the first gas chamber of gas chamber inlet channel pair（17）It is inflated；Second gas chamber unloads gas passage end and is connected to the second gas chamber
（24）, other end connection impact connector（3）Connector venthole（4）, with this to the second gas chamber（24）It carries out unloading gas；In piston
（21）At the end of stroke, piston（21）With its percussion face impact connector（3）Complete ballistic motion；
Work as piston（21）It is under return state, second gas chamber（24）Inlet channel one end is connected to the second air distribution hole（18）,
Its other end is connected to the second gas chamber（24）, with this compressed gas through air inlet（11）, distribution bar（16）Centre bore, the second distribution
Hole（18）, second the second gas chamber of gas chamber inlet channel pair（24）It is inflated；First gas chamber unloads gas passage end connection the
One gas chamber（17）, other end connection impact connector（3）Connector venthole（4）, with this to the first gas chamber（17）It carries out unloading gas.
2. down-the-hole top hammer according to claim 1, it is characterised in that：The piston（21）It is equipped with through internal and external walls
First radial hole（5）With the second radial hole（19）, the piston（21）With outer tube（8）Between be equipped with respectively with the first radial hole
（5）With the second radial hole（19）The first air channel being connected（6）With the second air channel（20）, and first air channel（6）
One end be connected to the first radial hole（5）, the other end the first gas chamber of connection（17）, first air channel（6）With the second ventilation
Slot（20）It is not connected to mutually；The piston（21）With outer tube（8）Between be equipped with for be connected to the second air channel（20）With the second gas
Room（24）First annular gas channel（22）；The piston（21）With distribution bar（16）Between be equipped with and first radial hole
（5）The second annular air-flow path being connected（23）；The distribution bar（16）Lower end outer wall be equipped with connection the second annular airflow
Channel（23）With connector venthole（4）Air guide channel（31）；
First air channel（6）, the first radial hole（5）, the second annular air-flow path（23）And air guide channel（31）Phase successively
Connection constitutes first gas chamber and unloads gas channel；First air distribution hole（7）, the first radial hole（5）And first air channel（6）According to
Secondary composition the first gas chamber inlet channel that is connected；Second gas chamber（24）, the second annular air-flow path（23）And air guide
Channel（31）It is sequentially connected logical composition second gas chamber and unloads gas channel；Second air distribution hole（18）, the second radial hole（19）,
Second air channel（20）And first annular gas channel（22）It is sequentially connected logical composition the second gas chamber inlet channel.
3. down-the-hole top hammer according to claim 1, it is characterised in that：The distribution bar（16）Upper end outer wall and outer tube
（8）Inner wall sealed and be connected by a sealing ring, and the end passes through a pin（15）By distribution bar（16）With outer tube
（8）It is fixedly connected.
4. down-the-hole top hammer according to claim 1, it is characterised in that：The outer tube（8）It is inside additionally provided with non-return valve, it is described
Non-return valve includes check valve body（13）And check valve body（13）The check valve seat of connection（14）And it is set to check valve body
（13）With check valve seat（14）Between spring（9）；The non-return valve passes through check valve seat（14）It is fixedly installed in the distribution
Bar（16）Top；The non-return valve is for air inlet described in one-way sealing（11）.
5. down-the-hole top hammer according to claim 1, it is characterised in that：The air guide channel（31）For along distribution bar（16）Under
Hold the air slot or gas port of centre bore outer shroud axial direction.
6. down-the-hole top hammer according to claim 1, it is characterised in that：The outer tube（8）With impact connector（3）Between also
Equipped with guide sleeve（25）, the guide sleeve（25）Upper end above impact connector（3）Upper end.
7. down-the-hole top hammer according to claim 1, it is characterised in that：The distribution bar（16）It is equipped in the centre bore of bottom end
Regulating the qi flowing in the channels plug（26）, for adjusting distribution bar（16）The size of centre bore ventilatory capacity.
8. down-the-hole top hammer according to claim 1, it is characterised in that：The non-return valve and air inlet（11）The position of contact
It is equipped with cushion rubber（10）.
9. down-the-hole top hammer according to claim 1, it is characterised in that：First air distribution hole（7）Quantity be one or
It is multiple, first radial hole（5）Quantity and position and the first air distribution hole（7）Quantity and position it is corresponding, and the first diameter
To the aperture in hole（5）With the first air distribution hole（7）Aperture match.
10. down-the-hole top hammer according to claim 1, it is characterised in that：Second air distribution hole（18）Quantity be one
Or multiple, second radial hole（19）Quantity and position and the second air distribution hole（18）Quantity and position it is corresponding, and
Two radial holes（19）Aperture and the second air distribution hole（18）Aperture match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810711474.5A CN108756730B (en) | 2018-07-03 | 2018-07-03 | Down-the-hole top hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810711474.5A CN108756730B (en) | 2018-07-03 | 2018-07-03 | Down-the-hole top hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108756730A true CN108756730A (en) | 2018-11-06 |
| CN108756730B CN108756730B (en) | 2024-04-12 |
Family
ID=63975500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810711474.5A Active CN108756730B (en) | 2018-07-03 | 2018-07-03 | Down-the-hole top hammer |
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| Country | Link |
|---|---|
| CN (1) | CN108756730B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219583A (en) * | 2019-06-12 | 2019-09-10 | 湖南科技大学 | A kind of large aperture pineapple hair style hard rock is crushed impactor and breaking method |
| CN111021962A (en) * | 2019-11-12 | 2020-04-17 | 源石机械科技承德有限公司 | Roller cone drill bit and method of construction |
| CN113638687A (en) * | 2021-09-01 | 2021-11-12 | 长沙黑金刚实业有限公司 | Cone impactor |
| CN113638687B (en) * | 2021-09-01 | 2024-04-26 | 长沙黑金刚实业有限公司 | Cone impactor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434094A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
| CN102434093A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston-guide-sleeve-type valveless single-cylinder-type high-efficiency down-hole hammer |
| CN103174379A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Cyclone high wind pressure down-hole hammer with tail pipe |
| CN203114165U (en) * | 2013-03-12 | 2013-08-07 | 宜昌市五环钻机具有限责任公司 | Cyclone band tail pipe high wind pressure down-hole hammer |
| CN203321313U (en) * | 2013-06-28 | 2013-12-04 | 宜昌市五环钻机具有限责任公司 | Down-hole hammer |
| CN203547522U (en) * | 2013-10-29 | 2014-04-16 | 长沙天和钻具机械有限公司 | Down-hole hammer |
| CN204060508U (en) * | 2014-09-19 | 2014-12-31 | 宜昌市五环钻机具有限责任公司 | A kind of down-the-hole air hammer |
| CN104265159A (en) * | 2014-09-19 | 2015-01-07 | 宜昌市五环钻机具有限责任公司 | Down hole hammer |
| KR20160001019U (en) * | 2014-09-19 | 2016-03-29 | 이창 우후안 락 드릴링 툴스 컴퍼니 리미티드 | New type down-hole hammer |
| CN208934589U (en) * | 2018-07-03 | 2019-06-04 | 苏州新锐合金工具股份有限公司 | A kind of down-the-hole top hammer |
-
2018
- 2018-07-03 CN CN201810711474.5A patent/CN108756730B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434094A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston tail pipe type impacter of valveless single-cylinder type downhole |
| CN102434093A (en) * | 2010-09-29 | 2012-05-02 | 宜昌市五环钻机具有限责任公司 | Piston-guide-sleeve-type valveless single-cylinder-type high-efficiency down-hole hammer |
| CN103174379A (en) * | 2013-03-12 | 2013-06-26 | 宜昌市五环钻机具有限责任公司 | Cyclone high wind pressure down-hole hammer with tail pipe |
| CN203114165U (en) * | 2013-03-12 | 2013-08-07 | 宜昌市五环钻机具有限责任公司 | Cyclone band tail pipe high wind pressure down-hole hammer |
| CN203321313U (en) * | 2013-06-28 | 2013-12-04 | 宜昌市五环钻机具有限责任公司 | Down-hole hammer |
| CN203547522U (en) * | 2013-10-29 | 2014-04-16 | 长沙天和钻具机械有限公司 | Down-hole hammer |
| CN204060508U (en) * | 2014-09-19 | 2014-12-31 | 宜昌市五环钻机具有限责任公司 | A kind of down-the-hole air hammer |
| CN104265159A (en) * | 2014-09-19 | 2015-01-07 | 宜昌市五环钻机具有限责任公司 | Down hole hammer |
| KR20160001019U (en) * | 2014-09-19 | 2016-03-29 | 이창 우후안 락 드릴링 툴스 컴퍼니 리미티드 | New type down-hole hammer |
| CN208934589U (en) * | 2018-07-03 | 2019-06-04 | 苏州新锐合金工具股份有限公司 | A kind of down-the-hole top hammer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219583A (en) * | 2019-06-12 | 2019-09-10 | 湖南科技大学 | A kind of large aperture pineapple hair style hard rock is crushed impactor and breaking method |
| CN110219583B (en) * | 2019-06-12 | 2020-07-24 | 湖南科技大学 | Large-aperture pineapple head type hard rock crushing impactor and crushing method |
| CN111021962A (en) * | 2019-11-12 | 2020-04-17 | 源石机械科技承德有限公司 | Roller cone drill bit and method of construction |
| CN113638687A (en) * | 2021-09-01 | 2021-11-12 | 长沙黑金刚实业有限公司 | Cone impactor |
| CN113638687B (en) * | 2021-09-01 | 2024-04-26 | 长沙黑金刚实业有限公司 | Cone impactor |
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|---|---|
| CN108756730B (en) | 2024-04-12 |
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