CN210659913U - Mud circulation type cluster down-the-hole hammer drilling tool - Google Patents
Mud circulation type cluster down-the-hole hammer drilling tool Download PDFInfo
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- CN210659913U CN210659913U CN201921651118.5U CN201921651118U CN210659913U CN 210659913 U CN210659913 U CN 210659913U CN 201921651118 U CN201921651118 U CN 201921651118U CN 210659913 U CN210659913 U CN 210659913U
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Abstract
The utility model discloses a mud circulating type cluster down-the-hole hammer drilling tool, which comprises a bracket and a down-the-hole hammer assembly, wherein the top of the bracket is provided with a fixed pulley, the bottom of the bracket is provided with a winch, a traction rope of the winch bypasses the fixed pulley at the top of the bracket and then is suspended and fixed with the down-the-hole hammer assembly, the down-the-hole hammer assembly is in a cluster type and comprises an installation cylinder, the inner wall of the installation cylinder is fixed with a plurality of down-the-hole hammer monomers, the center of the installation cylinder is hollowed into a slag discharge channel, and the down-the-hole hammer assembly also comprises water supply hoses which are in one-; the outlet of each water supply hose is positioned on the bottom surface of the hammer head of the corresponding down-the-hole hammer monomer, and the exhaust port of each down-the-hole hammer monomer is also positioned on the bottom surface of the hammer head of the down-the-hole hammer monomer; the down-the-hole hammer assembly also comprises a slag discharging hose with the bottom extending into the slag discharging channel, and the slag discharging hose is communicated with the liquid suction pump. The drilling tool can enhance the rock entering efficiency and enlarge the pore-forming aperture so as to meet the pore-forming requirement of the ultra-large engineering pile foundation, improve the slag discharging efficiency and avoid dust generation.
Description
Technical Field
The utility model relates to a pile foundation pore-forming goes into rock construction technical field among the civil engineering, specifically says so a circulating hole hammer drilling tool tied in a bundle of mud.
Background
At present, in order to enhance the bearing capacity of a pile foundation, when a bearing layer at the bottom of the pile foundation is required to be deep below a weathered bedrock or a fresh rock surface in bridges, roads, railways, high buildings and the like in large engineering projects, a down-the-hole hammer drilling tool is often adopted for drilling into the rock.
The down-the-hole hammer drilling tool in the prior art comprises a support and a down-the-hole hammer drill bit, wherein a fixed pulley is arranged at the top of the support, a winch is arranged at the bottom of the support, a traction rope of the winch bypasses the fixed pulley at the top of the support and then is suspended and fixed with the down-the-hole hammer drill bit, and the down-the-hole hammer drill bit is generally a drill bit of a single down-the-hole hammer. The down-the-hole hammer is a mature prior art, and utilizes an air compressor to convey compressed air to a down-the-hole hammer component through an air conveying pipe, so that the down-the-hole hammer component continuously transmits impact energy and impact frequency to a hammer head, intermittently impacts a rock mass and breaks the rock by pulse; meanwhile, the hammer head sinks by the self weight of the hammer head.
The down-the-hole hammer drilling tool in the prior art has the following defects: the outer diameter of a single down-the-hole hammer drill bit is generally 300-400 mm, the outer diameter of a single down-the-hole hammer with certain enlarged sizes can be even increased to 2000mm, but the pile foundation aperture of certain ultra-large engineering buildings such as large bridges or super high-rise buildings with the size of more than one hundred meters often reaches 2000-5000 mm, the rock entering efficiency and the hole forming size of the single down-the-hole hammer drill bit in the prior art are insufficient, and the pile foundation construction requirements of the ultra-large engineering are obviously difficult to meet. In addition, in the prior art, the down-the-hole hammer drilling tool adopts a gas lift type slag discharge process, namely, an exhaust port is arranged in the down-the-hole hammer, compressed air is sent into the down-the-hole hammer through a gas delivery pipe and drives the hammer head, and then is discharged to the bottom of the hole through the exhaust port, and the generated reaction force lifts the residue and crushed soil at the bottom of the hole out of an orifice, however, the gas lift cycle can generate a large amount of dust, pollute air and damage the health of operators, the slag discharge efficiency of the gas lift cycle is unsatisfactory, the speed is slow, the slag discharge amount is small, and the subsequent further hole cleaning treatment is needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can strengthen into rock efficiency, enlarge pore-forming aperture to satisfy super large-scale engineering pile foundation pore-forming demand, and can improve row's sediment efficiency, avoid producing the circulating hole hammer drilling tool tied in a bundle of mud of dust.
The technical scheme of the utility model is that, a mud circulating type cluster down-the-hole hammer drilling tool is provided, which comprises a support and a down-the-hole hammer assembly, wherein the top of the support is provided with a fixed pulley, the bottom of the support is provided with a winch, a traction rope of the winch bypasses the fixed pulley at the top of the support and then is suspended and fixed with the down-the-hole hammer assembly, the down-the-hole hammer assembly is in a cluster type and comprises an installation cylinder, a circle of a plurality of down-the-hole hammer monomers are fixed on the inner wall of the installation cylinder, the center of the installation cylinder is hollowed into a slag discharge channel, and the down-the-hole hammer assembly also comprises; the outlet of each water supply hose is positioned on the bottom surface of the hammer head of the corresponding down-the-hole hammer monomer, and the exhaust port of each down-the-hole hammer monomer is also positioned on the bottom surface of the hammer head of the down-the-hole hammer monomer; the down-the-hole hammer assembly also comprises a slag discharging hose with the bottom extending into the slag discharging channel, and the slag discharging hose is communicated with the liquid suction pump.
Compared with the prior art, the mud circulating type cluster down-the-hole hammer drilling tool adopting the structure has the following advantages.
Compared with a single down-the-hole hammer, the cluster down-the-hole hammer integrates the simultaneous action of a plurality of down-the-hole hammers, the hole forming and rock entering efficiency and the construction speed are obviously improved, and the pore diameter of the formed hole is also multiplied, so that the size requirement of the formed hole of the ultra-large pile foundation can be met; moreover, the ring of the plurality of down-the-hole hammer monomers are annularly arranged, most area of the bottom of the installation cylinder is basically covered, although the center of the installation cylinder has a small amount of dead angles, the drilling tool can still be ensured to be fully crushed integrally due to the hard and brittle property of a rock stratum, and the formed slag particles are small; moreover, what is more important is that a slag discharge channel is just formed in the hollow area in the center of the mounting cylinder, a water supply hose is specially arranged for each down-the-hole hammer monomer, and an outlet of the hose is arranged near the bottom surface of the hammer head and an exhaust port, so that water and high-pressure gas are sprayed out from the bottom of the hammer head to form slurry and laitance with crushed slag at the bottom of a hole, and rise along the slag discharge channel under the reaction force of the bottom of the hole, and meanwhile, a liquid suction pump also provides suction for the laitance and the slurry through the slag discharge hose; in other words, above-mentioned structure has realized complete mud circulation, compares prior art's gas lift formula, and this application arranges sediment efficient, no dust, pollution are few, green.
Preferably, six down-the-hole hammer monomers are uniformly distributed along the circumferential direction of the installation cylinder; the hammer head of each down-the-hole hammer monomer is a petal type hammer head with wide outside and narrow inside, the cross section of the hammer head is composed of an outer arc edge, an inner arc edge, a left inclined straight edge and a right inclined straight edge, and a gap exists between the straight edge on one side of each petal type hammer head and the straight edge of the adjacent petal type hammer head; six hammers enclose a hexagonal inlet of the slag discharge passage; the six down-the-hole hammer monomers of above-mentioned outer loop, the atress is even stable, and the special shape of six petal tup eccentric settings has further reduced the fretwork space of central authorities for the area distribution of sediment passageway and tup reaches optimum proportion, is guaranteeing to arrange under the unobstructed prerequisite of sediment, has improved broken rock efficiency as far as.
Preferably, the upper part of the mounting cylinder is provided with a detachable filter screen; the middle part of the mounting cylinder is provided with a fixing ring, and the fixing ring is provided with a one-way valve which can only be pushed upwards; therefore, the filter screen can block large-particle gravels, avoids the gravels from continuously circulating along with the slurry, reduces the energy consumption of slurry circulation, and can only upwards jack the one-way valve, so that the gravels are prevented from falling to the bottom of the hole, and the sediment at the bottom of the hole is effectively reduced; in other words, formed the cavity of depositing large granule rubble temporarily between filter screen and the valve, effectively avoided the rubble to get into circulation or fall back the hole bottom, and because the filter screen is removable, use a period of time after, can dismantle the filter screen, tak the rubble away, it is convenient to maintain.
The detachable filter screen is preferably in a connecting structure, a limit ring is radially and inwardly protruded at the upper part of the inner wall of the mounting cylinder, a round frame is arranged at the edge of the filter screen, and the round frame is in threaded connection with the limit ring; therefore, the filter screen is convenient to disassemble and assemble and reliable in performance.
The one-way valve is preferably: a reinforcing block is fixed below each valve, the reinforcing block is provided with a hinge shaft, the bottom surface of the fixing ring is provided with a shaft seat matched with the hinge shaft, and the side surface of the shaft seat is also fixed with a top block for supporting the reinforcing block to enable the lower swing limit of the valve to be horizontal; therefore, when slurry mixed with broken stones rises, the valve can be easily jacked open around the hinge shaft, and once the broken stones enter the temporary cavity above the valve, the broken stones are supported by the valve and the jacking block, so that the falling back is avoided.
Drawings
Fig. 1 is a schematic view of the front view structure of the mud circulating cluster down-the-hole hammer drill of the present invention.
Figure 2 is the structure schematic diagram of the down-the-hole hammer assembly of the mud circulating type cluster down-the-hole hammer drilling tool of the utility model.
Fig. 3 is a schematic view of the structure of fig. 2 after being deflected by a certain angle.
Fig. 4 is the schematic structural diagram of the down-the-hole hammer assembly of the mud circulating type cluster down-the-hole hammer drilling tool with the installation barrel removed.
Fig. 5 is a schematic view of the structure of fig. 4 after being deflected by a certain angle.
Fig. 6 is an enlarged schematic view of a portion a of fig. 4.
The down-the-hole hammer comprises a bracket 1, a bracket 2, a down-the-hole hammer component 3, a fixed pulley 4, a winch 5, a traction rope 6, a mounting cylinder 7, a down-the-hole hammer monomer 8, a slag discharge channel 9, a water supply hose 10, a hammer head 11, an exhaust port 12, a slag discharge hose 13, a liquid suction pump 14, a filter screen 15, a fixing ring 16, a valve 17, a limiting ring 18, a round frame 19, a reinforcing block 20, a hinge shaft 21, a shaft seat 22, a top block 23 and a gas pipe.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1-6, the mud circulating type cluster down-the-hole hammer drilling tool of the present invention comprises a support 1 and a down-the-hole hammer assembly 2, wherein a fixed pulley 3 is arranged on the top of the support 1, a winch 4 is arranged on the bottom of the support 1, and a traction rope 5 of the winch 4 is suspended and fixed with the down-the-hole hammer assembly 2 after bypassing the fixed pulley 3 on the top of the support 1. The above contents belong to the prior art and are not described in detail.
Down-hole hammer subassembly 2 is the cluster formula, and it is including an installation section of thick bamboo 6, and in this application, the face of going up a contraceptive ring of an installation section of thick bamboo 6 has set up a plurality of rings, and the end of haulage rope 5 divide into stranded and every share all with a rings hook. A circle of a plurality of down-the-hole hammer monomers 7 are fixed on the inner wall of the mounting cylinder 6, and the center of the mounting cylinder 6 is hollowed into a slag discharge channel 8. The down-the-hole hammer single body 7 is driven by an air compressor to transmit compressed air into the down-the-hole hammer single body 7 through the air transmission pipe 23 so as to realize the up-down vibration into rock, and the internal structure and the specific operation mechanism of the down-the-hole hammer single body 7 also belong to the prior art, so the description is not expanded. The innovation of the present application is how to bundle multiple down-the-hole hammer units 7 together for greater performance and add new components to achieve new functions.
In the embodiment, six down-the-hole hammer units 7 of the down-the-hole hammer assembly 2 are uniformly distributed along the circumferential direction of the mounting cylinder 6; the hammer head 10 of each down-the-hole hammer single body 7 is a petal type hammer head 10 with a wide outer part and a narrow inner part, the cross section of the hammer head 10 is composed of an outer arc edge, an inner arc edge and two inclined straight edges at the left and the right, and a gap is formed between the straight edge at one side of each petal type hammer head 10 and the straight edge of the adjacent petal type hammer head 10; six hammers 10 enclose a hexagonal inlet of the slag discharge passage 8.
The down-the-hole hammer assembly 2 further comprises water supply hoses 9 corresponding to the down-the-hole hammer monomers 7 one by one; the outlet of each water supply hose 9 is positioned at the bottom surface of the hammer head 10 of the corresponding down-the-hole hammer single body 7, and the exhaust port 11 of each down-the-hole hammer single body 7 is also positioned at the bottom surface of the hammer head 10 of the down-the-hole hammer single body 7. The gas pipe 23 of each down-the-hole hammer unit 7 naturally communicates with the gas outlet 11. The down-the-hole hammer assembly 2 further comprises a slag discharge hose 12 with the bottom extending into the slag discharge channel 8, and the slag discharge hose 12 is communicated with a liquid suction pump 13.
Of course, it is known from the general knowledge that the water supply hoses 9 are driven by water pumps, and each water supply hose 9 may be specially provided with one water pump, or each water supply hose 9 may be communicated with the water main through a branch water pipe, and then the water pump is provided on the water main. Furthermore, the water main inlet may even be in direct communication with the mud pit, supplying mud directly and not supplying water. Of course, it is also possible that the supply hose 9 supplies water to the borehole to form mud at the bottom of the borehole.
The upper part of the mounting cylinder 6 is provided with a detachable filter screen 14; specifically, the upper part of the inner wall of the mounting cylinder 6 is inwards protruded with a limit ring 17 in the radial direction, the edge of the filter screen 14 is provided with a round frame 18, and the round frame 18 is in threaded connection with the limit ring 17.
A fixing ring 15 is arranged in the middle of the mounting cylinder 6, and a one-way valve 16 which can only be pushed upwards is arranged on the fixing ring 15; specifically, a reinforcing block 19 is fixed below each valve 16, the reinforcing block 19 is provided with a hinge shaft 20, the bottom surface of the fixing ring 15 is provided with a shaft seat 21 matched with the hinge shaft 20, and the side surface of the shaft seat 21 is also fixed with a top block 22 for supporting the reinforcing block 19 to enable the valve 16 to swing to a horizontal lower limit.
Claims (5)
1. The utility model provides a circulating downhole hammer drilling tool tied in a bundle of mud, it includes support (1) and downhole hammer subassembly (2), and support (1) top is equipped with fixed pulley (3), and support (1) bottom is equipped with hoist engine (4), and fixed, its characterized in that is suspended in midair with downhole hammer subassembly (2) behind fixed pulley (3) of support (1) top is walked around in haulage rope (5) of hoist engine (4): the down-the-hole hammer assembly (2) is of a cluster type and comprises an installation cylinder (6), a circle of a plurality of down-the-hole hammer monomers (7) are fixed on the inner wall of the installation cylinder (6), the center of the installation cylinder (6) is hollowed into a slag discharge channel (8), and the down-the-hole hammer assembly (2) further comprises water supply hoses (9) which correspond to the down-the-hole hammer monomers (7) one by one; the outlet of each water supply hose (9) is positioned on the bottom surface of the hammer head (10) of the corresponding down-the-hole hammer monomer (7), and the exhaust port (11) of each down-the-hole hammer monomer (7) is also positioned on the bottom surface of the hammer head (10) of the down-the-hole hammer monomer (7); the down-the-hole hammer component (2) also comprises a slag discharging hose (12) with the bottom extending into the slag discharging channel (8), and the slag discharging hose (12) is communicated with a liquid suction pump (13).
2. The mud circulating coherent down-the-hole hammer drill of claim 1, wherein: six down-the-hole hammer monomers (7) are uniformly distributed along the circumferential direction of the installation cylinder (6); the hammer head (10) of each down-the-hole hammer monomer (7) is a petal type hammer head (10) with the outer width and the inner width, the cross section of the hammer head (10) is composed of an outer arc edge, an inner arc edge and two inclined straight edges at the left and right, and a gap exists between the straight edge at one side of each petal type hammer head (10) and the straight edge of the adjacent petal type hammer head (10); six hammers (10) enclose a hexagonal inlet of the slag discharge passage (8).
3. The mud circulating coherent down-the-hole hammer drill according to claim 1 or 2, characterized in that: the upper part of the mounting cylinder (6) is provided with a detachable filter screen (14); the middle part of the mounting cylinder (6) is provided with a fixing ring (15), and the fixing ring (15) is provided with a one-way valve (16) which can only be pushed upwards.
4. The mud circulating coherent down-the-hole hammer drill of claim 3, wherein: a limit ring (17) is radially and inwardly protruded at the upper part of the inner wall of the mounting cylinder (6), a round frame (18) is arranged at the edge of the filter screen (14), and the round frame (18) is in threaded connection with the limit ring (17).
5. The mud circulating coherent down-the-hole hammer drill of claim 3, wherein: a reinforcing block (19) is fixed below each valve (16), the reinforcing block (19) is provided with a hinge shaft (20), the bottom surface of the fixing ring (15) is provided with a shaft seat (21) matched with the hinge shaft (20), and the side surface of the shaft seat (21) is also fixed with a jacking block (22) used for supporting the reinforcing block (19) to enable the lower swing limit of the valve (16) to be horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921651118.5U CN210659913U (en) | 2019-09-29 | 2019-09-29 | Mud circulation type cluster down-the-hole hammer drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921651118.5U CN210659913U (en) | 2019-09-29 | 2019-09-29 | Mud circulation type cluster down-the-hole hammer drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN210659913U true CN210659913U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921651118.5U Expired - Fee Related CN210659913U (en) | 2019-09-29 | 2019-09-29 | Mud circulation type cluster down-the-hole hammer drilling tool |
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| CN (1) | CN210659913U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196460A (en) * | 2020-09-08 | 2021-01-08 | 李新形 | Underground continuous wall down-the-hole hammer grooving machine and using method thereof |
| RU2815398C1 (en) * | 2020-09-08 | 2024-03-14 | Синьсин ЛИ | Trencher with downhole pneumatic hammers for wall in soil and method of its application |
-
2019
- 2019-09-29 CN CN201921651118.5U patent/CN210659913U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196460A (en) * | 2020-09-08 | 2021-01-08 | 李新形 | Underground continuous wall down-the-hole hammer grooving machine and using method thereof |
| WO2022052796A1 (en) * | 2020-09-08 | 2022-03-17 | 李新形 | Diaphragm wall down-the-hole hammer trenching machine and use method thereof |
| CN112196460B (en) * | 2020-09-08 | 2023-10-27 | 李新形 | Underground diaphragm wall down-the-hole hammer grooving machine and use method thereof |
| RU2815398C1 (en) * | 2020-09-08 | 2024-03-14 | Синьсин ЛИ | Trencher with downhole pneumatic hammers for wall in soil and method of its application |
| US11982157B2 (en) | 2020-09-08 | 2024-05-14 | Xinxing LI | Diaphragm wall down-the-hole hammer trenching machine and use method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200602 |
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| CF01 | Termination of patent right due to non-payment of annual fee |