CN219638773U - Auxiliary reaming device for casing pipe discharging and additionally installed with rotary drilling bit - Google Patents
Auxiliary reaming device for casing pipe discharging and additionally installed with rotary drilling bit Download PDFInfo
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- CN219638773U CN219638773U CN202321361561.5U CN202321361561U CN219638773U CN 219638773 U CN219638773 U CN 219638773U CN 202321361561 U CN202321361561 U CN 202321361561U CN 219638773 U CN219638773 U CN 219638773U
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- drilling
- thrust block
- bit
- guide rod
- drill bit
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- 238000005553 drilling Methods 0.000 title claims abstract description 101
- 238000007599 discharging Methods 0.000 title description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 210000004210 tooth component Anatomy 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 24
- 239000011435 rock Substances 0.000 abstract description 19
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
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- 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
- Earth Drilling (AREA)
Abstract
The utility model discloses a reaming device for assisting in casing running of a rotary drilling bit, which mainly realizes the casing running of the rotary drilling pile while drilling by adding the reaming device, in particular to a reaming and drilling assembly which is added on the inner wall of a conventional rotary drilling bit, a thrust block is arranged on a bit bottom plate, when the rotary drilling bit is used for drilling a rock and soil layer in a forward rotating way, the bottom plate is in an open state, the thrust block welded with the bottom plate acts in a positive direction, a swinging guide rod in the reaming and drilling assembly is pushed by the thrust block, a reamer tooth assembly is pushed to open after the swinging guide rod rotates, and a hole wall is reamed after a certain angle of drilling tooth in the reamer tooth assembly is opened, so that the rock and soil layer between a bit cylinder and a reaming contour can be effectively disturbed and broken through the added reamer tooth except normal drilling; the strength of the disturbed and broken rock and soil mass is greatly reduced, and the steel sleeve can be smoothly lowered to a designated position while drilling along a pre-broken annular area in a rotary or pressing mode.
Description
Technical Field
The utility model belongs to the technical field of constructional engineering, and relates to a reaming device for assisting casing running of a rotary drilling bit.
Background
In foundation pit fender piles and pile foundation engineering mainly comprising rotary drilling rig pore forming, a long pile casing or a full pile casing is needed to be used for wall protection when necessary for loose filling layers and limestone soil and rock combined strata with easy hole collapse, and a rotary drilling rig power head driver is adopted to rotate a lower pile casing or a pressurizing oil cylinder to press the lower pile casing or the pressurizing oil cylinder into the soil layers under normal conditions, but for the limestone karst development strata with high hard content and uneven soil and rock distribution, the difficulty of driving a casing to be lowered is high, and the situations of casing deflection or incapability of being lowered and the like are easy to occur.
For the situation that the casing pipe is difficult to lower, the casing pipe is normally required to be pre-drilled by the rotary drilling bit and then pressed into the casing pipe, when the casing pipe is lowered in the mode, the drilling bit with a larger size is normally required to be replaced, soil is firstly cut, and the casing pipe is pressed into the casing pipe after the drilling bit is lifted; one drilling machine is required to carry out reciprocating drill-down construction or two drilling machines are adopted for alternate construction; by adopting the mode, the casing pipe lowering hole forming operation can be effectively performed, but the drilling efficiency is low, and the hole forming time is long.
Therefore, an improved rotary drilling bit is needed to be designed, and the rotary drilling pile reaming-while-drilling casing pipe discharging is realized by being provided with or additionally provided with a reaming device, so that the construction efficiency of rotary drilling pile casing pipe discharging in the stratum is improved.
Disclosure of Invention
The utility model provides a reaming device for assisting in casing running, which mainly comprises a reaming device arranged on a rotary drill bit, wherein a reaming drilling assembly is additionally arranged on the inner wall of the conventional rotary drill bit (taking a double-bottom sand-bailing drill bit as an example), a thrust block is arranged on a drill bit bottom plate, when the rotary drill bit is used for drilling a rock and soil layer in a forward rotating way, the bottom plate is in an open state, the thrust block acts with the bottom plate in a positive direction, the thrust block pushes a swinging guide rod in the reaming drilling assembly, the guide rod is rotated to push a reamer tooth assembly to open, the hole wall is reamed after the drilling tooth in the reamer tooth assembly is opened by a certain angle, and the reamed drilling tooth effectively disturbs and breaks the rock and soil layer between a drill bit cylinder and a reaming contour; the strength of the rock and soil body in the range is greatly reduced, and the steel sleeve can be smoothly lowered to a designated position while drilling along the pre-broken annular area in a rotary or pressing mode.
When the rotary drilling bit reverses and drills, the bottom plate is in a closed state, the reverse thrust block welded with the bottom plate acts, the thrust block pushes the swinging guide rod on the other side of the reaming and drilling assembly, the guide rod rotates to push the reaming tooth assembly which is unfolded by a certain angle to be closed, and then the drill bit carrying a rock-soil body can smoothly drill in the sleeve.
The reaming device for the additional auxiliary casing is mainly positioned in the same body of the rotary drilling bit, the reamer tooth grooves are formed in the cylinder body to realize the opening and closing of the reamer teeth, and the refitted part occupies only a small space in the cylinder body of the drill bit, so that the functionality of the drill bit is expanded on the premise of not affecting the normal use of the drill bit.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the auxiliary casing running reamer for the rotary drilling bit is arranged inside a rotary drilling bit barrel and mainly comprises a bottom unfolding state thrust block 101, a bottom recycling state thrust block 102, a swing guide rod bracket 11, a swing guide rod 12, a top thrust block 13, a fixed bracket 14, a connecting rod 15, a connecting plate 17, a rotating pin gland 18, a rotating pin 19 and a reamer tooth component 20.
The bottom unfolding state thrust block 101 and the bottom recovery state thrust block 102 have the same structure and are symmetrically arranged on the upper bottom plate 8 of the drill bit in a welding mode for pushing the swing guide rod 12; the two swing guide rod brackets 11 are symmetrically arranged on the inner wall of the drill bit barrel 3 of the rotary drilling bit; the two swing guide rods 12 are respectively arranged on the swing guide rod bracket 11 and vertically arranged, the swing guide rods 12 swing around the swing guide rod bracket 11, and the bottom ends of the two swing guide rods 12 are respectively opposite to the outer sides of the top ends of the bottom expanding state thrust block 101 and the bottom recovering state thrust block 102; the top thrust block 13 is arranged at the top end of the swing guide rod 12.
Four fixing brackets 14 are symmetrically arranged on two parallel drill bit reinforcing ribs 16 of the rotary drilling bit; the two connecting rods 15 are arranged on the fixed support 14, the two connecting rods 15 are parallel to each other, one end of one connecting rod 15 is opposite to the top thrust block 13 on one swinging guide rod 12, and one end of the other connecting rod 15 is opposite to the top thrust block 13 on the other swinging guide rod 12.
The two connecting plates 17 are symmetrically arranged on the two drill bit reinforcing ribs 16, one end of each connecting plate is connected with the drill bit reinforcing rib 16, and the other end of each connecting plate is provided with a pin hole; the reamer tooth members 20 are mounted on the web 17 by means of a swivel pin 19 and secured by a swivel pin gland 18, with the trailing ends of the two reamer tooth members 20 being located opposite the two top pads 13, respectively.
When the rotary drilling rig is used for rotary drilling, the bottom of the rotary drilling bit is opened, the upper bottom plate 8 in the double-layer bottom plate of the drill bit drives the bottom expanding state thrust block 101 to push the adjacent pushing swing guide rod 12 to rotate in the positive direction, then the top thrust block 13 is pushed to rotate along the rotating pin 19, after the rotary drilling rig is rotated, the reamer teeth in the reamer teeth assembly 20 are opened for a certain angle, the drill bit barrel 3 is expanded through the reserved reamer tooth grooves 21, the outer reamer teeth assembly 20 is rotated along with the drill bit to cut the rock-soil body between the drill bit barrel 3 and the reaming contour 22, and further the steel sleeve which is placed while drilling can be smoothly placed in the low-strength rock-soil body after disturbance between the drill bit barrel 3 and the reaming contour 22 is guaranteed, and the wall protection effect is achieved. After the rock and soil body cut by the rotary drilling bit is filled with the drilling bucket, the rotary drilling bit is reversely rotated to lift the drilling bit, at the moment, the upper base plate 8 of the rotary drilling bit is rotated to be in a closed state, the thrust block 102 in the reverse bottom recovery state welded with the upper base plate 8 pushes the adjacent pushing swing guide rod 12 to reversely rotate, and then the top thrust block 13 pushes the connecting rod 15 to push the reamer tooth component 20 to reversely rotate along the rotating pin 19, after rotation, the reamer tooth component 20 which opens a certain angle is recovered into the drill bit barrel 3 through the reserved reamer tooth socket 21, and further the drilling bucket carrying the rock and soil body can be smoothly lifted out of drilling to carry out slag discharge.
The utility model has the beneficial effects that:
1. according to the reaming device for the auxiliary casing pipe with the additional installation of the rotary drilling bit, provided by the utility model, the broken surface larger than the area of the drill bit can be formed in the range of the outer casing pipe of the drill bit by arranging the connecting rod mechanism and the reaming tooth component, so that the problem that the casing pipe is difficult to be lowered while drilling in a loose filling layer of a hole easy to collapse and a limestone karst development stratum combined with earth and rock can be effectively solved.
2. The utility model takes the opening and closing of the bottom plate in the drilling bit as the driving force to drive the connecting rod mechanism and the reamer tooth component to open and close, does not need to set additional power, can ensure that the state of the reamer device is consistent with the drilling state, and does not interfere with normal drilling and slag discharge.
3. The additional reaming device provided by the utility model is mainly based on modification of a conventional rotary drilling bit, the whole connecting rod mechanism and the drilling tooth component are of modularized design, and the additional reaming device has the potential of being additionally arranged on different types of drilling bits with different diameters, and the modified drilling bit can be disassembled and then modified back to the conventional drilling bit under the conventional condition.
Drawings
FIG. 1 is a schematic cross-sectional view showing an internal structure of a rotary drill bit of the present utility model in a state of being extended by a reaming device for auxiliary casing running;
FIG. 2 is a schematic top view showing the state of the expanding device for assisting casing running with the additional installation of the rotary drill bit;
FIG. 3 is a schematic bottom view showing an expanded state of a reaming device for assisting casing running, to which a rotary drill bit is added, according to the present utility model;
FIG. 4 is a schematic cross-sectional view showing an internal structure of the rotary drill bit of the present utility model in a recovered state of a reaming device for casing pipe under assistance;
FIG. 5 is a schematic top view showing a recovered state of a reaming device for casing under the assistance of the rotary drill bit according to the present utility model;
FIG. 6 is a schematic bottom view showing a recovered state of a reaming device for auxiliary casing for rotary drilling bit installation according to the present utility model;
in the figure: 1, connecting square heads; 2, a drill bit upper cover plate; 3, a drill bit barrel; 4, unlocking and locking the bottom mechanism; 5, unlocking the structure pressing rod; 6, connecting a bottom plate with a hinge; 7 cutting picks and tooth plates; 8, an upper bottom plate; 9, a lower bottom plate; 101 a bottom deployment state pad; 102 recovering a state thrust block at the bottom; 11 swinging a guide rod bracket; 12 swinging guide rods; 13 top thrust block; 14 fixing a bracket; 15 connecting rods; 16 drill bit reinforcing ribs; 17 connecting plates; 18 turning the pin gland; 19 a rotation pin; 20 reamer tooth members; 21 reamer tooth sockets; 22 reaming profile.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and technical schemes.
The internal structure section schematic diagram, the top view and the bottom view of the expanding state of the reaming device for assisting casing running of the rotary drilling bit are shown in fig. 1, 2 and 3, and the internal structure section schematic diagram, the top view and the bottom view of the recovering state are shown in fig. 4, 5 and 6.
The utility model provides a dig drill bit soon specifically refers to a dig and inlay rock double-bottom and drag for sand and bore the fill soon (dig the drill bit soon for short), and this type dig drill bit soon possesses the loose soil-packing layer that easily collapses the hole and the ability that earth and rock combined stratum construction soon, and the main part of drill bit comprises drill bit upper cover plate 2, drill bit barrel 3, and upper and lower bottom plates 8, 9, has welded on the drill bit upper cover plate 2 and has connected square head 1, connects square head 1 and dig the drive arrangement of rig soon and connects transmission weight of bit and moment of torsion soon, provides power for dig drill bit work soon; the lower part of the drill bit barrel 3 is connected with an upper bottom plate 8 and a lower bottom plate 9, the upper bottom plate 8 and the lower bottom plate 9 can rotate according to different states of drilling and lifting, so that the drill bit is in an open state and a closed state, the lower bottom plate 9 is connected with a cutting pick and a toothed plate 7, cutting and breaking of a rock-soil body are carried out under the driving of a drilling machine, after the rock-soil body is filled with the drill bit barrel 3, lifting is carried out, after lifting, the upper bottom plate 8 and the lower bottom plate 9 are unlocked through a pressure rod 5 of an unlocking structure, the whole bottom plate rotates through a connecting hinge 6, the bottom plate of the rotary drilling bit is opened for discharging earth, after the earth discharging is completed, the upper bottom plate 8 and the lower bottom plate 9 are reset, and the drill bit is lowered into a drilled hole for continuous drilling.
In order to solve the problem of difficult casing running while drilling in the drilling process, the rotary drilling bit is modified, the added components comprise a bottom unfolding state thrust block 101, a bottom recycling state thrust block 102, a swing guide rod bracket 11, a swing guide rod 12, a top thrust block 13, a fixed bracket 14, a connecting rod 15, a connecting plate 17, a reamer tooth component 20 and the like, two sets of components are symmetrically arranged in the drill bit barrel 3 and are connected with the barrel 3 and the drill bit upper cover plate 2 through drill bit reinforcing ribs 16, the whole structure is fixed and reliable, the whole volume of the connecting rod mechanism is small, and the operation of the structures of the unlocking and bottom locking mechanism 4, the unlocking structure compression rod 5 and the bottom plate connecting hinge 6 is not influenced.
When the rotary drilling rig is in rotary drilling, the upper base plate 8 and the lower base plate 9 of the drill bit are in a staggered rotary state, the bottom unfolding state thrust blocks 101 symmetrically arranged on the upper base plate 8 of the rotary drilling bit are used for pushing the swinging guide rods 12, the swinging guide rods 12 are fixed and limited by the fixed supports 14 welded on the drill bit barrel 3, the drilling tooth members 20 are fixed with the drill bit reinforcing ribs 16 through the connecting plates 17 and the rotating pin covers 18, the drilling tooth members 20 can rotate around the rotating pins 19, the swinging guide rods 12 are connected with the top thrust blocks 13 to push the reamer tooth members 20 to rotate towards the outer side of the drill bit barrel 3 along the rotating pins 19, the reamer tooth assemblies 20 are unfolded and unfolded by a certain angle through the reserved reamer tooth grooves 21, accordingly, the drill bit is driven to cut a rock mass between the drill bit barrel 3 and the reaming contour 22 by the rotary drilling rig after the damage strength of the rock mass is reduced, and the steel sleeve can be smoothly pressed into the rock mass between the drill bit barrel 3 and the reaming contour 22 by the rotary drilling rig.
After the rotary drilling bit cuts the bit barrel of the rock-soil body filled bit, the rotary drilling bit is reversely rotated to lift the bit, at the moment, the upper base plate 8 of the bit is rotated to be in a closed state, the reverse direction bottom recovery state thrust block 102 welded with the upper base plate 8 plays a role, the recovery state thrust block 102 pushes the adjacent pushing swing guide rod 12 to reversely rotate, then the pushing top thrust block 13 is linked with the connecting rod 15 to push the reamer tooth component 20 to reversely rotate along the rotating pin 19, after rotation, the reamer tooth component 20 which opens a certain angle is recovered into the bit barrel 3 through the reserved reamer tooth slot 21, and further, the drill bit carrying the rock-soil body can be smoothly lifted out for drilling and deslagging.
The working process of the utility model is as follows:
1. when pile holes of a steel sleeve retaining wall are required to be lowered for loose filling layers of easy-to-collapse holes, limestone soil-rock combinations and the like, a rotary drilling rig provided with a modified drill bit is aligned with the hole sites for drilling construction;
2. the rotary drilling bit of the reaming device for the auxiliary casing pipe is additionally arranged, and the connecting rod mechanism and the reaming tooth component are driven to be unfolded for a certain angle mainly by taking the open state of the bottom plate as a driving force in the drilling process, so that the effect of cutting and damaging soil in the scope of the casing pipe descending profile is realized;
3. after drilling to a certain depth, a power head driver in the rotary drilling rig presses the steel sleeve which is put down while drilling into a rock soil layer, and the strength is reduced because the rock soil body in a sleeve lowering path is damaged in advance, so that the sleeve can be smoothly underground to a designated position;
4. when the rock-soil body cut by the rotary drilling bit is filled with the drilling bucket, the reverse drilling lifting is carried out, the bottom plate is closed, the drill bit bottom plate driving link mechanism and the reamer tooth component are in a closed state, and the drill bit carrying the rock-soil body can be smoothly lifted out from the sleeve to carry out slag discharge.
5. The above steps are repeated until the casing is lowered into a formation where retaining walls are not required.
The utility model discloses a reaming device for assisting casing running by additionally installing a rotary drilling bit, which is used for improving the reaming capability of a conventional rotary drilling bit after refitting the conventional rotary drilling bit, and can improve the casing running efficiency while drilling and the casing running stability and verticality. The reaming device has the functions of unfolding and closing, and the unfolding and closing states of the reaming device can be kept consistent with the drilling state, so that normal drilling and slag discharge are not disturbed. Meanwhile, the whole connecting rod mechanism and the drilling tooth component have the potential of being refitted on different types of drills, and the refitted drill bit can be refitted back to a conventional drill bit after being disassembled under the conventional condition.
Claims (1)
1. The auxiliary casing running reaming device for the rotary drilling bit is characterized by being arranged inside a rotary drilling bit barrel and mainly comprising a bottom unfolding state thrust block (101), a bottom recycling state thrust block (102), a swing guide rod bracket (11), a swing guide rod (12), a top thrust block (13), a fixed bracket (14), a connecting rod (15), a connecting plate (17), a rotating pin gland (18), a rotating pin (19) and a reamer tooth component (20);
the bottom unfolding state thrust block (101) and the bottom recycling state thrust block (102) have the same structure and are symmetrically arranged on the upper bottom plate (8) of the drill bit in a welding mode and used for pushing the swing guide rod (12); the two swing guide rod brackets (11) are symmetrically arranged on the inner wall of the drill bit barrel (3) of the rotary drilling bit; the two swing guide rods (12) are respectively arranged on the swing guide rod bracket (11) and vertically arranged, the swing guide rods (12) swing around the swing guide rod bracket (11), and the bottom ends of the two swing guide rods (12) are respectively opposite to the outer sides of the top ends of the bottom unfolding state thrust block (101) and the bottom recovery state thrust block (102); the top thrust block (13) is arranged at the top end of the swing guide rod (12);
the four fixing brackets (14) are symmetrically arranged on two parallel drill bit reinforcing ribs (16) of the rotary drilling bit; the two connecting rods (15) are arranged on the fixed support (14), the two connecting rods (15) are parallel to each other, one end of one connecting rod (15) is opposite to the top thrust block (13) on one swinging guide rod (12), and one end of the other connecting rod (15) is opposite to the top thrust block (13) on the other swinging guide rod (12);
the two connecting plates (17) are symmetrically arranged on the two drill bit reinforcing ribs (16), one end of each connecting plate is connected with the drill bit reinforcing rib (16), and the other end of each connecting plate is provided with a pin hole; the reamer tooth members (20) are mounted on the connecting plate (17) through rotating pins (19) and are fastened through rotating pin pressing covers (18), and tail ends of the two reamer tooth members (20) are opposite to positions of the two top thrust blocks (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321361561.5U CN219638773U (en) | 2023-05-31 | 2023-05-31 | Auxiliary reaming device for casing pipe discharging and additionally installed with rotary drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321361561.5U CN219638773U (en) | 2023-05-31 | 2023-05-31 | Auxiliary reaming device for casing pipe discharging and additionally installed with rotary drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219638773U true CN219638773U (en) | 2023-09-05 |
Family
ID=87809208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321361561.5U Active CN219638773U (en) | 2023-05-31 | 2023-05-31 | Auxiliary reaming device for casing pipe discharging and additionally installed with rotary drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219638773U (en) |
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2023
- 2023-05-31 CN CN202321361561.5U patent/CN219638773U/en active Active
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