CN116677312A - Annular cutting type pneumatic impact drilling tool - Google Patents
Annular cutting type pneumatic impact drilling tool Download PDFInfo
- Publication number
- CN116677312A CN116677312A CN202310862509.6A CN202310862509A CN116677312A CN 116677312 A CN116677312 A CN 116677312A CN 202310862509 A CN202310862509 A CN 202310862509A CN 116677312 A CN116677312 A CN 116677312A
- Authority
- CN
- China
- Prior art keywords
- hammer
- tup
- piston
- cylinder
- hammer head
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 239000000956 alloy Substances 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 18
- 238000009527 percussion Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 description 49
- 238000000034 method Methods 0.000 description 23
- 230000008569 process Effects 0.000 description 20
- 230000006835 compression Effects 0.000 description 18
- 238000007906 compression Methods 0.000 description 18
- 230000001105 regulatory effect Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 8
- 239000004575 stone Substances 0.000 description 7
- 241000251131 Sphyrna Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of drilling construction, and discloses a circular cutting type pneumatic impact drilling tool, which comprises an upper cylinder, wherein one end of the upper cylinder is connected with a rotary drilling rod, one end of the upper cylinder, which is far away from the rotary drilling rod, is connected with a middle cylinder, one end of the middle cylinder, which is far away from the upper cylinder, is connected with a lower cylinder, and a high-pressure air pipe connector is arranged on the upper cylinder; through improving traditional impacter and the integrative installation scheme of tup, install impacter and tup respectively and fix on well barrel and lower barrel to realize the installation respectively of impacter and tup, become the mode that must dismantle the impacter with original change the tup and only dismantle the cross pin of barrel and just can change the tup, reduced the work load of dismantling the change tup, through the structural shape that changes the tup hammer handle, increase the structural strength of hammer handle and tup body, reduce the risk of breaking the hammer.
Description
Technical Field
The invention belongs to the technical field of drilling construction, and particularly relates to a circular cutting type pneumatic impact drilling tool.
Background
With the high-speed development of economy in China in recent years, the number of large-scale, super-high-rise and large-span heavy construction projects is gradually increased, and particularly, in recent years, a bay bridge, a super-high-rise building and the like are continuously constructed, the form of a large-pile-diameter deep pile foundation is continuously innovated, and the large-pile-diameter deep pile foundation construction technology has been greatly developed.
The publication CN1836088A discloses a percussion drilling tool with adjustable flow control, the fluid channeling device of the percussion drilling tool comprising a housing having an interior space, a drive chamber and a valve chamber configured in the interior space; a piston disposed within the housing and having an upper end portion and a longitudinal through-hole disposed within the drive chamber; and a valve for controlling the flow into the drive chamber. The device comprises a first component which is partially arranged in the driving cavity, so that when the end part of the piston is positioned in the driving cavity, the first component extends into the piston hole, but the hammer head is worn and damaged in the impact use process, so that the condition of high difficulty in replacement of the hammer head occurs, and the subsequent use process is influenced.
The large-caliber down-the-hole hammer drilling construction process is mainly applied to pile foundation construction, and solves the industrial problems of low construction efficiency of hard rock stratum and high abrasion of drilling tools. The large-caliber down-the-hole hammer drill is mainly a circular cutting down-the-hole hammer, and has the advantages of low power consumption, low vibration, low weight, low failure rate, high efficiency and the like.
The large-caliber circular cutting down-the-hole hammer consists of a plurality of sub-impactors and sub-hammerheads, wherein the sub-hammerheads are main loss components in the actual working process. The replacement of the sub-hammer occupies a large amount of time in the construction process, reduces the construction efficiency, increases the construction cost, greatly influences the crushing efficiency of the hammer when the hammer maintains constant force to crush rocks with different hardness, and simultaneously increases the wear degree of the hammer to influence the subsequent use.
Disclosure of Invention
The invention aims at solving the problems, and provides the circular cutting type pneumatic impact drilling tool which has the advantages that the hammer head can be replaced only by disassembling the transverse pin of the cylinder body instead of the mode that the hammer head needs to be disassembled in the prior art, and the workload of disassembling and replacing the hammer head is reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions: the annular cutting type pneumatic impact drilling tool comprises an upper cylinder, wherein one end of the upper cylinder is connected with a rotary drilling rod, one end of the upper cylinder, which is far away from the rotary drilling rod, is connected with a middle cylinder, one end of the middle cylinder, which is far away from the upper cylinder, is connected with a lower cylinder, and a high-pressure air pipe connector is arranged on the upper cylinder;
the middle cylinder body is internally connected with a plurality of impactors, one end of each impactor is communicated with a high-pressure air pipe, a piston is arranged in the impactors in a sliding manner, and the lower end face of each impactor is level with the lower end of the middle cylinder body;
the lower cylinder body is internally provided with a plurality of hammers in a sliding manner, the number of the hammers is the same as that of the impactors, and the movement of the piston can be in conflict with the hammers and drive the hammers to move;
the piston comprises an impact part and a sliding part, the sliding part is abutted against the hammer head, and a return spring is arranged at one end of the impact part, which is close to the sliding part;
the lower cylinder body is internally provided with a rotating assembly capable of driving the hammer head to rotate.
Preferably, the hammer comprises a hammer body, a hammer handle is connected and arranged at one end of the hammer body, a striking surface is arranged at one end of the hammer handle away from the hammer body, alloy teeth are inlaid at one end of the hammer body away from the hammer handle, and the piston can collide with the striking surface.
Preferably, the hammer head body comprises a plane part, the alloy teeth are connected with the plane part, and two reverse slag discharging grooves are connected with the plane part.
Preferably, the upper end face of the hammer head is flush with the upper end face of the lower cylinder, and the shape of the hammer handle is consistent with the shape of the guide groove of the lower cylinder.
Preferably, the middle parts of the piston and the hammer head are provided with ventilation pipelines in a penetrating way.
Preferably, an adjusting component for adjusting the diameter of the ventilation pipeline of the piston is arranged in the piston.
Preferably, the alloy teeth comprise a cylindrical section and a spherical section, the cylindrical end is embedded in the hammer head body, and the spherical section is positioned on the surface of the hammer head body.
Preferably, a pin hole is formed in the hammer head, and a transverse pin is inserted into the pin hole.
Compared with the prior art, the invention has the following beneficial effects:
1. through improving traditional impacter and the integrative installation scheme of tup, install impacter and tup respectively and fix on well barrel and lower barrel to realize the installation respectively of impacter and tup, become the mode that must dismantle the impacter with original change the tup and only dismantle the cross pin of barrel and just can change the tup, reduced the work load of dismantling the change tup, through the structural shape that changes the tup hammer handle, increase the structural strength of hammer handle and tup body, reduce the risk of breaking the hammer.
2. The reset spring and the adjusting component are arranged to adjust the knocking force of the hammer head on different rocks, the knocking efficiency of the hammer head can be identified through mutual cooperation between the reset spring and the adjusting component, the hammer head is ensured to be always in a relatively efficient working state, meanwhile, the detection of the hardness of the rocks is realized according to the compression degree change state of the reset spring of the hammer head in the knocking process, so that the working states of the adjusting component and the hammer head are regulated, and the knocking times between the hammer head and the rocks are reduced.
3. Through the vent pipe and the adjusting part who set up, can carry out regulation control to vent pipe's ventilation efficiency to when guaranteeing that high-pressure gas is acting on the piston, can ensure the security of high-pressure gas in the impacter, simultaneously according to adjusting part control vent pipe's diameter size, thereby clear up the rubble or the piece that the tup was strikeed produced, also can reduce the condition of rubble joint on the tup, when improving the crushing efficiency of tup, also can improve the life of tup.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the flow of gas during operation of an embodiment of the present invention;
FIG. 3 is a schematic view of a cylinder structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a lower cylinder structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of an impactor according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a square hammer head according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an end face structure of a square hammer head according to an embodiment of the present invention;
FIG. 8 is a schematic view of a round hammer head according to an embodiment of the present invention;
fig. 9 is a cross-sectional view of the cartridge and the lower cartridge in an embodiment of the present invention.
Description of the drawings: 1. an upper cylinder; 2. a middle cylinder; 3. a lower cylinder; 21. a fixing cap; 22. an impactor; 221. a piston; 31. a pin hole; 32. a hammer head; 321. a striking face; 322. a hammer handle; 323. a hammer body; 324. alloy teeth; 3231. a first arc; 3232. a second arc; 3233. a straight line edge; 3234. a planar portion; 3235. an inclined portion; 3236. a slag discharge groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-9, a circular cutting type pneumatic impact drilling tool comprises an upper cylinder 1, one end of the upper cylinder 1 is connected with a rotary drilling rod, the upper cylinder 1 is utilized to realize bearing of the impact drilling tool, one end of the upper cylinder 1, which is far away from the rotary drilling rod, is connected with a middle cylinder 2, the middle cylinder 2 is utilized to limit an impactor 22, the impactor 22 can be normally used in work, one end of the middle cylinder 2, which is far away from the upper cylinder 1, is connected with a lower cylinder 3, so that the lower cylinder 3 is used for tunneling soil layers, a high-pressure air pipe interface is arranged on the upper cylinder 1, the output of air flow is controlled through the high-pressure air pipe interface, and meanwhile, in order to ensure impact crushing effects on rock layers with different hardness in the face of different rock layers, in the scheme, the air pressure in the high-pressure air pipe interface is set to be adjustable, and meanwhile, the upper cylinder 1, the middle cylinder 2 and the lower cylinder 3 are connected through flange bolts, so that stability in the use process is ensured.
The inner cylinder body 2 is internally connected with a plurality of impactors 22, the impactors 22 are connected with the inner cylinder body 2 by utilizing the fixing caps 21, one end of each impacter 22 is communicated with a high-pressure air pipe, a piston 221 is arranged in the impactors 22 in a sliding mode, the piston 221 can reciprocate up and down in the impactors 22, and accordingly the piston 221 can reciprocate on the hammer heads 32 under the action of high-pressure air, the hammer heads 32 are broken, the lower end face of each impacter 22 is flush with the lower end of the corresponding inner cylinder body 2, and the fact that the piston 221 moves out of the impactors 22 and cannot reset when the hammer heads 32 are knocked in the impactors 22 is guaranteed.
The lower cylinder 3 is internally provided with a plurality of hammers 32 in a sliding manner, the number of the hammers 32 is the same as that of the impactors 22, the moving energy of the piston 221 is in conflict with that of the hammers 32 and drives the hammers 32 to move, and the hammers 32 extend out of the lower cylinder 3 under the action of the piston 221 and can be hidden in the lower cylinder 3 again under the action of gravity of the lower cylinder 3, the middle cylinder 2 and the upper cylinder 1 after the hammers 32 are knocked.
Meanwhile, the following description is needed: in the scheme, the hammer heads 32 and the impactors 22 are separately arranged, the mode that the impactors 22 are required to be detached when the hammer heads are replaced originally is changed into the mode that only the transverse pins of the cylinder body 3 are detached, and the workload of detaching and replacing the hammer heads is reduced.
The piston 221 includes a striking part and a sliding part, wherein the striking part can move in the impactor 22 under the action of high pressure gas, so as to cause the striking part to collide with the sliding part, so that the sliding part collides with the hammer head 32, one end of the striking part close to the sliding part is provided with a return spring, wherein the hard condition of the hammer head 32 striking the rock at the moment can be identified to judge according to the compression degree change of the return spring, thereby realizing the adjustment of the striking pressure and the crushing form of the hammer head 32, ensuring the stable crushing efficiency of the hammer head 32, namely, under the normal working state of the striking part, the sliding part and the hammer head 32, the high pressure gas drives the striking part to collide with the sliding part, and meanwhile, after the striking part collides with the sliding part, the return spring is compressed to one third of the original length, can drive the sliding part under the effect of impact portion and remove for the sliding part drives tup 32 synchronous motion, make tup 32 strike rock, simultaneously when the hardness of rock is higher, the buffering of the unable realization power of striking of tup 32 this moment, promptly through the conduction of force, make the instantaneous compression volume increase of reset spring, thereby the in-process of the quick compression of reset spring, make quick separation between impact portion and the sliding part, when the hardness of rock is lower, the striking of tup 32 can break rock this moment, the striking power of tup 32 is partly released on rock this moment, another part is conducted to impact portion department, the instantaneous compression volume of reset spring is slower this moment, and the separation rate between impact portion and the sliding part is also slower, thereby realize discerning the hardness of tup 32 rock strata.
In order to avoid the tup 32 to carry out the breakage back to rock, the rubble is to the next time strike of tup 32 and is influenced, and then be equipped with the rotating assembly that can drive tup 32 rotation in barrel 3 down, wherein the rotating assembly at tup 32 does not produce the restriction to the ascending removal of tup 32 vertical direction, the tup 32 can carry out the removal of vertical direction on rotating assembly promptly, preferably, rotating assembly is the sleeve in this scheme and constitutes, and tup 32 sliding connection is on the sleeve, can drive tup 32 and rotate in step when the sleeve takes place to drive tup 32 rotation, when realizing the rubble to knocking the clearance, also can be through rotatory further crushing effect of strengthening tup 32.
It should be noted that, when the hammer head 32 is extended under the action of the piston 221, the hammer head 32 can be driven to rotate by the rotating assembly, so that the rotation of the hammer head 32 is ensured to clean broken stones.
Preferably, in order to facilitate the hammer 32 better strike the breakage to rock, and then include the hammer body 323 to the hammer 32, wherein hammer body 323 and rock terminal surface contact, the one end connection of hammer body 323 is equipped with hammer handle 322, hammer handle 322 is used for the position limitation to hammer body 323, and make piston 221 can not directly act on hammer body 323, improve the life of hammer body 323, hammer handle 322 keeps away from the one end of hammer body 323 and is equipped with the face 321, piston 221 can contact and drive hammer handle 322 and hammer body 323 and remove, the one end that hammer body 323 kept away from hammer handle 322 is inlayed and is equipped with alloy tooth 324, utilize alloy tooth 324 to break to utilize the setting of alloy tooth 324, reduce the wearing and tearing degree of hammer body 323 when striking rock, improve the life of hammer 32, wherein piston 221 can conflict with face 321.
Preferably, the hammer body 323 includes a planar portion 3234, the contact area between the hammer body 323 and rock is ensured to be in a larger range all the time by utilizing the planar portion 3234, the alloy teeth 324 are connected with the planar portion 3234, two reverse slag discharging grooves 3236 are connected with the planar portion 3234, and the slag discharging grooves 3236 are utilized to clean scraps, so that normal work of the hammer 32 is avoided due to broken stone in the subsequent process.
Note that the shape of the hammer head 32 includes, but is not limited to, a square hammer head and a round hammer head, wherein the shape of the hammer handle 322 always coincides with the shape of the hammer head body 323.
As shown in fig. 6 and 7, when the hammer head 32 is square, the end face of the hammer head body 323 has a quadrangular structure, and is formed by a first arc 3231, a second arc 3232, and two straight edges 3233. The first arc 3231, the second arc 3232 are perpendicular to the diameter direction of the drill bit and are concentric circles, and two straight sides 3233 are parallel and equidistant to the diameter direction of the drill bit. The hammer body 323 end surface includes a flat portion 3234 and an inclined portion 3235. Each edge of the planar portion 3234 is connected to an inclined portion 3235, and one end of each inclined portion 3235 is connected to the edge of the planar portion 3234, and the other end is inclined away from the side provided with the alloy teeth 324. The inclined portions 3235 are arranged with the alloy teeth 324 being inlaid equidistant from the quadrangle.
As shown in fig. 8, when the hammer head 32 is in the shape of a circular hammer head, the lower end surface of the hammer head body 323 also includes a flat surface portion 3234 and an inclined portion 3235, and a plurality of alloy teeth 324 are fitted on the end surface.
Namely, according to the actual use requirement, the structural strength of the hammer handle 322 and the hammer head body 323 can be increased by changing the structural shape of the hammer head hammer handle, and the risk of breaking the hammer is reduced.
Preferably, the upper end face of the hammer 32 is flush with the upper end face of the lower cylinder 3, the shape of the hammer handle 322 is consistent with the shape of the guide groove of the lower cylinder 3, the moving distance of the hammer 32 is ensured to be enough to meet the impact force of the hammer 32 on rock, meanwhile, the shape of the hammer handle 322 is consistent with the shape of the guide groove of the lower cylinder 3, the hammer handle 322 is convenient to move in the moving process, the moving direction is unique, and the knocking force of the hammer 32 cannot be influenced by shaking in the lower cylinder 3.
Preferably, the middle position of the piston 221 and the hammer 32 is penetrated and provided with a vent pipe, the ventilation of high-pressure gas is ensured through the arrangement of the vent pipe, the impact on the safety of the impactor 22 when the release of the high-pressure gas cannot be carried out in the moving process of the piston 221 is avoided, an adjusting component for adjusting the diameter of the vent pipe of the piston 221 is arranged in the piston 221, the diameter of the vent pipe on the impact part in the piston 221 is adjusted through the arrangement of the adjusting component, so that the pressure value variation born by the high-pressure gas on the impact part is controlled, the impact force of the impact part on the sliding part is adjusted, the knocking force of the hammer 32 is controlled, the adjustment of the adjusting component is controlled by a reset spring, preferably, the structure of the adjusting component is preferably an air bag, and the diameter control of the vent pipe is realized through the expansion and the shrinkage of the air bag.
Meanwhile, through the vent pipeline arranged in the middle of the piston 221 and the hammer 32, high-pressure gas can pass through the hammer 32 to reach the knocking position, so that broken stones at the knocking position of the hammer 32 can be cleaned by utilizing the high-pressure gas, the hammer 32 is ensured to be always contacted with rocks to be knocked in the knocking process, the diameter of the vent pipeline of the impact part is regulated through the regulating component, and the regulation of the size of the airflow of the high-pressure gas through the hammer 32 is realized.
And utilize mutually supporting between air pipe and the reset spring, can realize detecting the behavior of tup 32, ensure the normal work of tup 32, when the alloy tooth 324 of tup 32 takes place wearing and tearing or damage, the atress condition when causing contact between a plurality of alloy teeth 324 and the rock changes, the resilience force that produces after beating also can be corresponding appear unusual to the state that leads to the reset spring when compressing and changing easily appears unusual condition.
It should be noted that, in the process of adjusting the adjusting component, when the adjusting component promotes the pressure value received by the impact portion to be maximum, the vent pipe still has an aperture through which the gas passes, that is, the adjusting component can only adjust the diameter of the vent pipe, but cannot completely seal the vent pipe, so as to ensure the safety of the impactor 22 in use.
Preferably, the alloy teeth 324 include a cylindrical section and a spherical section, the cylindrical end is embedded in the hammer head body 323, and the spherical section is located on the surface of the hammer head body 323, so that connection stability between the alloy teeth 324 and the hammer head body 323 is ensured.
Preferably, the hammer head 32 is provided with a pin hole 31, and a transverse pin is inserted into the pin hole 31 for realizing the connection between the hammer head 32 and the lower cylinder 3.
The working states of the adjusting component and the reset spring are connected with an external control center, so that the working states of the reset spring can be identified, and the adjusting component is controlled.
At the beginning, the impact part and the sliding part of the piston 221 are in a separated state, the return spring is in a normal state, the hammer 32 and the lower cylinder 3 do not slide relatively, and meanwhile, the adjusting component on the impact part is in a normal state, namely, the ventilation amount of the gas in the ventilation pipeline is maximum at the moment.
During operation, when the lower barrel 3 encounters rock in the process of drilling in the soil layer, the high-pressure gas is utilized to ventilate the impactor 22 at this time, the impact part on the gas control piston 221 is utilized to move, so that the impact part is contacted with the sliding part, and the hammer head 32 is driven to move, and finally the knocking of the rock is realized, meanwhile, in the knocking process, if the compression degree of the reset spring changes slowly, the rock hardness at this time is lower, the impact force of the impact part at this time can realize the breaking of the rock, and when the compression degree of the reset spring changes quickly, the rock hardness at this time is higher, and the rock is not obviously broken.
When the normal working state of the adjusting component is maintained and is not obviously changed, the compression degree of the reset spring is changed slowly, the impact force representing the impact part driving the hammer 32 under the pressure condition can meet the requirement of crushing the rock, meanwhile, the movement of the hammer 32 is only in the vertical direction in the crushing process, the crushed rock is still in the falling point position of the hammer 32, the hammer 32 is not utilized for crushing, further, when the pressure degree change of the reset spring is slow, the rotating component is controlled to rotate, thereby driving the hammer 32 to rotate, the hammer 32 rotates on the broken stone, further, the slag discharging groove 3236 is driven to clean the broken stone, the subsequent knocking of the hammer 32 is facilitated, in the process of rotating the hammer 32, the broken rock which is still mutually contradicted can be broken, the unbroken rock is leaked, the hammer 32 can be directly contacted with the unbroken rock, the condition that the broken stone offsets the knocking force of the hammer 32 is reduced, in addition, when the pressure degree change of the reset spring is slow, the adjusting component is also in the normal working state, namely, the ventilation quantity of the pipeline is maximum, the ventilation quantity of the hammer 32 can be controlled, the ventilation efficiency of the hammer 32 can be further improved, and the ventilation efficiency of the hammer 32 can be further improved by the ventilation pipeline can be ensured by the ventilation pipeline under the hammer 32.
When the regulating component maintains the normal working state and does not change obviously, the compression degree of the reset spring changes faster, which means that the impact force of the hammer 32 driven by the impact part under the pressure condition can not meet the requirement of breaking the rock, so when the compression degree of the reset spring changes faster, the diameter of the ventilation pipeline of the impact part is controlled to be reduced by the regulating component, so that more gas can be ensured to strengthen the pressure of the impact part, the change of the knocking force between the hammer 32 and the rock is finally realized, the breaking effect of the hammer 32 on the rock is improved, meanwhile, the aperture of the ventilation pipeline is reduced by the regulating component, the quantity of the gas passing through the ventilation pipeline is reduced, the gas can only clean the powder and fine broken stone at the knocking position of the hammer 32, the next knocking of the hammer 32 is ensured to be directly contacted with the rock, the impact pressure of the impact part is regulated, the impact part is driven to act on the sliding part and the hammer head 32 through high-pressure gas, and the compression depth of the reset spring is larger than that of the regulating assembly in a normal working state after the reset spring contacts with the sliding part, but the compression degree of the reset spring changes rapidly under the impact force, which means that the impact force at the moment still cannot meet the requirement of crushing the rock, the working process is repeated again, and when the compression degree of the reset spring changes slowly, the impact force at the moment can effectively crush the rock, so that the regulating assembly is controlled to reset to the normal working state through the change degree of the reset spring, and the impact force of the piston 221 driving the hammer head 32 is restored to the initial state.
Meanwhile, the self-checking of the knocking efficiency of the hammer 32 can be realized by utilizing the mutual matching between the reset spring and the adjusting component, in the scheme, the condition that the adjusting component can crush the rock in the normal working state is taken as an example, when the piston 221 and the hammer 32 are driven by high-pressure gas to move, after the hammer 32 collides with the rock, the compression degree of the reset spring changes stably, namely, the working state of the hammer 32 at the moment is stable, the crushing work of the rock can be met, when the hammer 32 collides with the rock, the compression degree of the reset spring changes abnormally, the condition that the compression degree changes faster or the compression degree of the reset spring changes not into a linear state is generated, the adjusting component is controlled to adjust the ventilation pipeline at the moment, the contact force between the hammer 32 and the rock is improved, the abnormal condition which is not caused by the higher hardness of the rock is ensured, the abnormal state of the reset spring is not released after the adjusting component is regulated, namely, the working state of the hammer 32 is abnormal at the moment, the crushing effect of the rock is reduced, and the working state of the hammer is detected according to the using state of the reset spring.
The reset spring and the adjusting component are arranged to adjust the knocking force of the hammer head 32 on different rocks, the knocking efficiency of the hammer head 32 can be identified through mutual cooperation between the reset spring and the adjusting component, the hammer head 32 is ensured to be always in a more efficient working state, meanwhile, the detection of the hardness of the rocks is realized according to the compression degree change state of the reset spring of the hammer head 32 in the knocking process, so that the working states of the adjusting component and the hammer head 32 are regulated, and the knocking times between the hammer head 32 and the rocks are reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a pneumatic percussion drilling tool of circular cutting formula, includes the barrel, the one end of going up the barrel is connected its characterized in that with dig the drilling rod soon: one end of the upper cylinder, which is far away from the rotary drilling rod, is connected with a middle cylinder, one end of the middle cylinder, which is far away from the upper cylinder, is connected with a lower cylinder, and a high-pressure air pipe interface is arranged on the upper cylinder;
the middle cylinder body is internally connected with a plurality of impactors, one end of each impactor is communicated with a high-pressure air pipe, a piston is arranged in the impactors in a sliding manner, and the lower end face of each impactor is level with the lower end of the middle cylinder body;
the lower cylinder body is internally provided with a plurality of hammers in a sliding manner, the number of the hammers is the same as that of the impactors, and the movement of the piston can be in conflict with the hammers and drive the hammers to move;
the piston comprises an impact part and a sliding part, the sliding part is abutted against the hammer head, and a return spring is arranged at one end of the impact part, which is close to the sliding part;
the lower cylinder body is internally provided with a rotating assembly capable of driving the hammer head to rotate.
2. The circular cutting pneumatic percussion drill according to claim 1, wherein: the hammer comprises a hammer body, one end of the hammer body is connected with a hammer handle, one end of the hammer handle, which is far away from the hammer body, is provided with a striking surface, one end of the hammer body, which is far away from the hammer handle, is inlaid with alloy teeth, and the piston can collide with the striking surface.
3. The circular cutting pneumatic percussion drill according to claim 2, wherein: the hammer head body comprises a plane part, the alloy teeth are connected with the plane part, and two reverse slag discharging grooves are connected with the plane part.
4. The circular cutting pneumatic percussion drill according to claim 2, wherein: the upper end face of the hammer head is flush with the upper end face of the lower cylinder body, and the shape of the hammer handle is consistent with the shape of the guide groove of the lower cylinder body.
5. The circular cutting pneumatic percussion drill according to claim 1, wherein: and the middle parts of the piston and the hammer head are provided with ventilation pipelines in a penetrating way.
6. The circular cutting pneumatic percussion drill according to claim 5, wherein: an adjusting component for adjusting the diameter of the piston ventilation pipeline is arranged in the piston.
7. A circular cutting pneumatic percussion drill according to claim 3, wherein: the alloy teeth comprise a cylindrical section and a spherical section, the cylindrical end is embedded into the hammer head body, and the spherical section is positioned on the surface of the hammer head body.
8. The circular cutting pneumatic percussion drill according to claim 1, wherein: the hammer is characterized in that a pin hole is formed in the hammer, and a transverse pin is inserted in the pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310862509.6A CN116677312B (en) | 2023-07-14 | 2023-07-14 | Annular cutting type pneumatic impact drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310862509.6A CN116677312B (en) | 2023-07-14 | 2023-07-14 | Annular cutting type pneumatic impact drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116677312A true CN116677312A (en) | 2023-09-01 |
| CN116677312B CN116677312B (en) | 2024-01-30 |
Family
ID=87783960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310862509.6A Active CN116677312B (en) | 2023-07-14 | 2023-07-14 | Annular cutting type pneumatic impact drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116677312B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011026955A (en) * | 2010-11-09 | 2011-02-10 | Kazunari Furuki | Earth excavating hammer and rotary excavator with the same |
| US20130306379A1 (en) * | 2011-02-11 | 2013-11-21 | Top Mark Mechanical Equipment Limited | Annulus Ring Hole Drill |
| KR20150105857A (en) * | 2014-03-10 | 2015-09-18 | 주식회사 우리기초 | Multi-core barrel hammer system |
| CN206071448U (en) * | 2016-09-09 | 2017-04-05 | 北京中车重工机械有限公司 | Cluster type down-hole hammer and its down-hole hammer monomer locked mechanism |
| CN207879247U (en) * | 2018-02-08 | 2018-09-18 | 佘翀 | It combines reducing and sprays Pump breath countercirculate boundling down-hole hammer |
| CN111119726A (en) * | 2020-01-19 | 2020-05-08 | 潍坊吉爱姆机械贸易有限公司 | Annular cluster formula down-the-hole hammer |
| CN113356753A (en) * | 2021-07-13 | 2021-09-07 | 新泰玖翊工程机械有限公司 | Combined variable-caliber cluster type down-the-hole hammer |
| CN215859971U (en) * | 2021-09-30 | 2022-02-18 | 亚核智造(江苏)科技有限公司 | Annular cutting core-taking down-the-hole hammer drill |
| CN218407293U (en) * | 2022-06-29 | 2023-01-31 | 长沙百通新材料科技有限公司 | Cluster formula down-the-hole hammer |
| CN115788281A (en) * | 2022-11-11 | 2023-03-14 | 长沙黑金刚实业有限公司 | Bind impacter and down-the-hole drill |
| CN219112875U (en) * | 2022-04-28 | 2023-06-02 | 广东原点智能技术有限公司 | Impact hammer |
-
2023
- 2023-07-14 CN CN202310862509.6A patent/CN116677312B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011026955A (en) * | 2010-11-09 | 2011-02-10 | Kazunari Furuki | Earth excavating hammer and rotary excavator with the same |
| US20130306379A1 (en) * | 2011-02-11 | 2013-11-21 | Top Mark Mechanical Equipment Limited | Annulus Ring Hole Drill |
| KR20150105857A (en) * | 2014-03-10 | 2015-09-18 | 주식회사 우리기초 | Multi-core barrel hammer system |
| CN206071448U (en) * | 2016-09-09 | 2017-04-05 | 北京中车重工机械有限公司 | Cluster type down-hole hammer and its down-hole hammer monomer locked mechanism |
| CN207879247U (en) * | 2018-02-08 | 2018-09-18 | 佘翀 | It combines reducing and sprays Pump breath countercirculate boundling down-hole hammer |
| CN111119726A (en) * | 2020-01-19 | 2020-05-08 | 潍坊吉爱姆机械贸易有限公司 | Annular cluster formula down-the-hole hammer |
| CN113356753A (en) * | 2021-07-13 | 2021-09-07 | 新泰玖翊工程机械有限公司 | Combined variable-caliber cluster type down-the-hole hammer |
| CN215859971U (en) * | 2021-09-30 | 2022-02-18 | 亚核智造(江苏)科技有限公司 | Annular cutting core-taking down-the-hole hammer drill |
| CN219112875U (en) * | 2022-04-28 | 2023-06-02 | 广东原点智能技术有限公司 | Impact hammer |
| CN218407293U (en) * | 2022-06-29 | 2023-01-31 | 长沙百通新材料科技有限公司 | Cluster formula down-the-hole hammer |
| CN115788281A (en) * | 2022-11-11 | 2023-03-14 | 长沙黑金刚实业有限公司 | Bind impacter and down-the-hole drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116677312B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105239922A (en) | Local reciprocating type hydraulic-impact well drilling speed increasing tool | |
| CN105569563A (en) | Rotary drilling rig bit capable of impact drilling | |
| US4940097A (en) | Fluid powered rotary percussion drill with formation disintegration inserts | |
| KR20120094714A (en) | Bit of hammer for drilling the ground | |
| CN116677312B (en) | Annular cutting type pneumatic impact drilling tool | |
| CN201087695Y (en) | High wind pressure downhole air hammer | |
| CN205259935U (en) | Drill bit is dug soon to impacted style | |
| CN106522844B (en) | Cross drill hammer structure, the Spiral digging machine drill bit containing the structure and its application | |
| CN106761422A (en) | A kind of staged Percusion spiral drill head | |
| CN202559338U (en) | Screwing pile using air | |
| CN108756731A (en) | A kind of PDC drill bit with axial impact ability | |
| CN203685022U (en) | Liquid-operated impactor | |
| CN102425370B (en) | Hole bottom oil pressure motor lithoclast combined power drilling tool construction method and device | |
| CN208364049U (en) | A kind of PDC drill bit with axial impact ability | |
| CN212296233U (en) | Impact cutting double-acting drill bit | |
| CN220247990U (en) | Annular cutting type pneumatic impact drilling tool | |
| CN112696149A (en) | Down-the-hole coring hammer head and annular down-the-hole hammer | |
| CN213330879U (en) | Low wind pressure down-the-hole impacter | |
| CN201292761Y (en) | High wind pressure downhole air hammer | |
| CN213775230U (en) | Low wind pressure down-the-hole hammer | |
| CN202718627U (en) | Rock drill facilitating discharge of rock debris | |
| CN210152546U (en) | High wind pressure down-the-hole impacter | |
| CN214659921U (en) | Down-the-hole coring hammer head and annular down-the-hole hammer | |
| CN210948484U (en) | Down-the-hole drill for water conservancy construction | |
| CN220059436U (en) | Turbine type double-spring clamp rope coring down-the-hole hammer for directional drilling of hard rock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |