CN114575750A - Reaming bit and reaming assembly - Google Patents
Reaming bit and reaming assembly Download PDFInfo
- Publication number
- CN114575750A CN114575750A CN202210242258.7A CN202210242258A CN114575750A CN 114575750 A CN114575750 A CN 114575750A CN 202210242258 A CN202210242258 A CN 202210242258A CN 114575750 A CN114575750 A CN 114575750A
- Authority
- CN
- China
- Prior art keywords
- rear end
- shaft rod
- rod
- drill
- bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007547 defect Effects 0.000 claims description 34
- 238000005553 drilling Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000002950 deficient Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241001172971 Verbesina alternifolia Species 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B12/00—Accessories for drilling tools
-
- 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
- E21B12/00—Accessories for drilling tools
- E21B12/04—Drill bit protectors
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a reaming bit and a reaming assembly. The reaming bit comprises a shaft rod; a front end; the front end and the rear end are sleeved on the shaft lever, can synchronously rotate with the shaft lever and can move up and down relative to the shaft lever; one end of the crushing device is rotationally connected with the front end head, and the other end of the crushing device is rotationally connected with the rear end head; the crushing device comprises a crushing device, a front end head, a rear end head, a telescopic piece and a crushing device, wherein one end of the crushing device is connected with the front end head, and the other end of the crushing device is connected with the rear end head; the shaft rod is provided with a locking joint which can be abutted against the front end and/or the rear end, and the length of the shaft rod is not less than the maximum distance between the front end and the rear end. According to the invention, the front end and the rear end are sleeved on the shaft rod, so that the reaming bit can freely move up and down relative to the shaft rod, and further automatic diameter changing is realized; the two ends of the shaft rod are provided with the locking sections, so that the front end and the rear end are limited on the shaft rod, and the stability of the reaming bit is improved.
Description
Technical Field
The invention relates to a hole expanding drill bit and a hole expanding assembly, and belongs to the field of basic building engineering.
Background
In recent years, with the rapid development of economy in China, the construction field is also developed vigorously, after foundation pile construction is completed, a construction unit entrusts a third-party detection mechanism to perform detection according to the building foundation pile detection technical specification (JGJ106-2014), and in foundation pile quality detection, the pile body is defective due to factors such as concrete segregation, incompact and mud inclusion, and the condition that the pile body is judged to be unqualified piles (III and IV) is rare frequently.
At present, there is no clear technical standard specification for how to deal with the defects of the pile body of the foundation pile, and a drilling machine is generally used for drilling 2 to 3 holes from the pile top to the pile bottom, and then a high-pressure jet grouting method is used for clearing the defects and reinforcing the foundation pile. Specifically, after a grouting pipe with a nozzle is drilled into a preset position of a foundation pile by a drilling machine, slurry or water and (air) are sprayed out of the nozzle through high-pressure equipment to form a high-pressure jet flow of 20-40 MPa, a water jet cutter is formed to punch, disturb and destroy a defect part, a drill rod is gradually lifted at a certain speed, the slurry and a crushed object are forcibly stirred and mixed, and a cylindrical solidification body is formed in the foundation pile after the slurry is solidified, so that the aim of reinforcing the foundation pile is fulfilled.
However, in practical application, the water jet cutter goes deep into the hole, and the stress point of the water jet cutter is too short, so that the directionality of the water jet cutter in the operation process is difficult to control, the defective part cannot be thoroughly removed according to the size of the defect of the pile body of the foundation pile, the quality and safety of the construction engineering cannot be ensured, and the method has very high defect treatment cost.
At present, a hole expanding drill bit for reducing and cleaning a defective part of a foundation pile by using a mechanical structure is also available in the market, however, most of the existing hole expanding drill bits are driven by a hydraulic or pneumatic device, so that the diameter of the drill bit can be reduced, and when the drill bit cuts the foundation pile without the defect, the drill bit is greatly abraded, so that the service life of the drill bit is shortened; meanwhile, the existing drill bit cannot automatically reduce the diameter according to the shape and the size of the defect, and whether the defect part is cleaned up needs to be checked for many times when the drill bit is used, so that the working efficiency is low. In addition, current reamer bit is when the clearance defect, because the effect of centrifugal force for reamer bit can appear rocking by a wide margin in the use, can't realize reamer bit's steady work.
Accordingly, there is a need for an improved reamer head and reamer assembly that addresses the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a reaming bit and a reaming assembly, and aims to solve one of the technical problems that an existing foundation pile defect cleaning device is high in cost, cannot automatically reduce diameter, is short in service life, low in working efficiency and large in shaking amplitude.
In order to achieve the above object, the present invention provides a reamer bit for treating a foundation pile defect, the reamer bit comprising: a shaft lever;
the front end head is sleeved on the shaft rod and can synchronously rotate with the shaft rod, and the front end head can move up and down relative to the shaft rod;
the rear end is sleeved on the shaft rod and can synchronously rotate with the shaft rod, and the rear end can move up and down relative to the shaft rod;
one end of the crushing device is rotationally connected with the front end head, and the other end of the crushing device is rotationally connected with the rear end head;
the telescopic piece is connected with the front end head at one end and the rear end head at the other end so as to reduce the distance between the front end head and the rear end head in a natural state, and the telescopic piece and the crushing device are arranged at intervals;
the shaft rod is provided with a locking joint which can be abutted against the front end and/or the rear end so as to limit the moving position of the front end and/or the rear end, and the length of the shaft rod is not less than the maximum distance between the front end and the rear end.
As a further improvement of the present invention, the locking segments include a front locking segment and a rear locking segment respectively disposed at two ends of the shaft rod, the front end can abut against the front locking segment, and the rear end can abut against the rear locking segment.
As a further improvement of the invention, the shaft lever comprises a limiting surface, the front end head comprises a front sliding hole and a limiting edge arranged in the front sliding hole, the rear end head comprises a rear sliding hole and a clamping edge arranged in the rear sliding hole, the shaft lever penetrates through the front sliding hole and the rear sliding hole, and the limiting edge and the clamping edge are respectively matched with the limiting surface, so that the shaft lever, the front end head and the rear end head can synchronously rotate.
As a further improvement of the present invention, a first fixing member is disposed on the front end, a second fixing member is disposed on the rear end, the first fixing member and the second fixing member are disposed opposite to each other, and two ends of the telescopic member are respectively connected to the first fixing member and the second fixing member.
As a further improvement of the invention, the front end head is provided with a movable hole, the rear end head is provided with a rotary hole, the crushing device comprises a connecting shaft, the connecting shaft is arranged at two ends of the crushing device, and the connecting shaft respectively penetrates through the movable hole and the rotary hole, so that the crushing device is respectively rotatably connected with the front end head and the rear end head.
As a further improvement of the invention, the crushing device comprises at least two wing rods, and the adjacent two wing rods are rotatably connected through the connecting shaft.
As a further improvement of the invention, the wing rod comprises a plurality of crushing teeth which are arranged on at least one surface of the wing rod.
In order to achieve the above object, the present invention provides a reaming assembly, which includes a power device and the reaming bit connected to the power device, where the power device includes a drilling machine and a drill rod connected to the drilling machine, and the drill rod is connected to the reaming bit to drive the reaming bit to rotate.
As a further improvement of the present invention, the reaming assembly includes a balancing device, the balancing device includes a rear drill cylinder and a front drill cylinder, one end of the rear drill cylinder is connected to the drill rod, the other end of the rear drill cylinder is connected to the rear end, an accommodating cavity is formed between the rear end and the rear drill cylinder, at least a part of the shaft rod is accommodated in the accommodating cavity, and the front drill cylinder is connected to one end of the shaft rod away from the rear drill cylinder.
As a further improvement of the present invention, the reaming assembly includes a water hole, the water hole sequentially penetrates through the drill rod, the rear drilling barrel, the shaft rod and the front drilling barrel along the central axis direction of the reaming assembly, and water is injected into the reaming assembly through the water hole to reduce the temperature of the reaming assembly.
The invention has the beneficial effects that: according to the reaming assembly, the front end and the rear end are sleeved on the shaft rod, and the front end and the rear end can move up and down relative to the shaft rod, so that the reaming bit can freely move when a defect is cleared, and the automatic diameter changing of the reaming bit is further realized; the two ends of the shaft rod are provided with the locking sections, the distance between the two locking sections is greater than the maximum distance between the front end and the rear end, so that the front end and the rear end are limited on the shaft rod, the front end and the rear end are prevented from being separated from the shaft rod, and the stability of the reaming bit is improved.
Drawings
Fig. 1 is a schematic perspective view of a reaming assembly according to a preferred embodiment of the invention.
Fig. 2 is an exploded view of the reaming assembly of fig. 1.
Fig. 3 is a perspective view of the reamer head of fig. 2.
Fig. 4 is a perspective view of the rear tip of fig. 3.
Fig. 5 is a schematic view of the connection of the rear tip and the wing of fig. 3.
Fig. 6 is a schematic view of the connection of the front tip and the wing stem of fig. 3.
Fig. 7 is a schematic view of the connection of the front head, rear head and crushing device of fig. 3.
Fig. 8 is a cross-sectional view of the rear tip and rear drill barrel of fig. 1.
Figure 9 is a perspective view of the drill rod of figure 2.
FIG. 10 is a cross-sectional view of the front locking segment of FIG. 2.
Fig. 11 is a cross-sectional view of the rear drill barrel of fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, a reaming assembly 100 for treating pile shaft defects is disclosed. The reaming assembly 100 comprises a power device 300, a reaming bit 200 and a balancing device 400, specifically, when the pile body has a defect, a hole (not shown) penetrating through the defect is formed on the pile body through the power device 300, the reaming bit 200 extends into the hole formed on the pile body and is placed at the defect, the power device 300 is connected with the reaming bit 200 to provide a driving force for the reaming bit 200 to drive the reaming bit 200 to rotate in the hole so as to remove the defect on the pile body; the balance device 400 is accommodated in the hole and is in contact with the hole wall, the balance device 400 is connected with the hole expanding drill bit 200, the hole expanding drill bit 200 is prevented from shaking during rotation, the stability of the hole expanding drill bit 200 is improved, and the pile body defect part can be stably cleaned by the hole expanding drill bit 200.
The power device 300 comprises a drilling machine 7 and a drill rod 6, specifically, the drilling machine 7 is connected with the drill rod 6, so that the drilling machine 7 can transmit power to the drill rod 6 and drive the drill rod 6 to rotate, in the invention, one end of the drill rod 6 is connected with the drilling machine 7, the other end of the drill rod 6 can be connected with a drill cylinder, and a hole is formed on a pile body under the drive of the drill rod 6; the other end of the drill rod 6 can also be connected with a reaming bit 200, and the defective part of the pile body is cleaned under the driving of the drill rod 6.
Referring to fig. 2, the reamer bit 200 includes a front end 1, a rear end 2, a shaft rod 3, a crushing device 4 and a telescopic member 5, specifically, the front end 1 and the rear end 2 are both sleeved on the shaft rod 3 and can rotate synchronously with the shaft rod 3, and the front end 1 and the rear end 2 can move up and down relative to the shaft rod 3. One end of the extensible member 5 is connected with the front head 1 and the other end is connected with the rear head 2 to generate a pulling force between the front head 1 and the rear head 2 to reduce the distance between the front head 1 and the rear head 2. Crushing device 4 is used for broken pile foundation defect position, and one end is connected with preceding end 1, the other end is connected with back end 2, and under natural state, extensible member 5 contracts to reduce the distance between preceding end 1 and the back end 2, preceding end 1 extrudees each other with back end 2, makes crushing device 4 atress outwards expand, and crushing device 4 rotates with preceding end 1 and back end 2 synchronous, with the scope of expanding breakage.
Referring to fig. 3 to 7, the front end 1 includes a front body 11 and a first fixing member 13 fixedly connected to the front body 11, the rear end 2 includes a rear body 21 and a second fixing member 23 fixedly connected to the rear body 21, specifically, the first fixing member 13 and the second fixing member 23 are disposed opposite to each other, that is, the first fixing member 13 is disposed on one side of the front body 11 close to the rear end 2, the second fixing member 23 is disposed on one side of the rear body 21 close to the front end 1, the first fixing member 13 is provided with a first fixing hole 131, and the second fixing member 23 is provided with a second fixing hole 231.
The two ends of the extensible member 5 are respectively connected with the first fixing member 13 and the second fixing member 23, and specifically, the two ends of the extensible member 5 are respectively provided with a connecting hook (not shown), and the connecting hooks respectively penetrate through the first fixing hole 131 and the second fixing hole 231, so as to movably connect the extensible member 5 with the front end head 1 and the rear end head 2. Of course, in other embodiments, the first fixing hole 131 and the second fixing hole 231 may be directly formed on the front body 11 and the rear body 21, so as to realize the movable connection between the extensible member 5 and the front head 1 and the rear head 2; two ends of the telescopic piece 5 can be respectively welded with the front end head 1 and the rear end head 2, so that the telescopic piece 5 is fixedly connected with the front end head 1 and the rear end head 2; connecting hooks can be arranged on the front body 11 and the rear body 21, and pull rings matched with the connecting hooks are arranged at two ends of the telescopic piece 5, so that two ends of the telescopic piece 5 are respectively connected with the front end head 1 and the rear end head 2.
Preferably, the extension piece 5 is an extension spring, the connecting hooks are arranged at two ends of the extension spring 5, and the front end head 1 and the rear end head 2 are pulled by the extension spring 5 in a natural state to reduce the distance between the front end head 1 and the rear end head 2.
Still be provided with preceding pier seat 12 on the preceding body 11, seted up movable hole 121 on the preceding pier seat 12, be provided with back pier seat 22 on the back body 21, seted up on the back pier seat 22 and changeed hole 221, it is concrete, one side that preceding body 11 is close to back end 2 is located to preceding pier seat 12, and back pier seat 22 is located one side that back body 21 is close to preceding end 1, and preceding pier seat 12 sets up with back pier seat 22 relatively promptly. The crushing device 4 comprises a connecting shaft (not shown), a wing rod 41 and a connecting hole 411 which is formed in the wing rod 41 and matched with the connecting shaft, wherein the connecting hole 411 is formed in two ends of the wing rod 41, the connecting hole 411 corresponds to the movable hole 121 and the rotating hole 221 respectively, the connecting shaft can penetrate through the connecting hole 411 and is contained in the movable hole 121 or the rotating hole 221, two ends of the wing rod 41 are rotatably connected with the front end head 1 and the rear end head 2 respectively, preferably, the connecting shaft is a rivet, the assembling is convenient, and the service life is long.
In this embodiment, the wing rods 41 are two, which are the first wing rod 412 and the second wing rod 413 respectively, one end of the first wing rod 412 is rotatably connected to the rear end 2 through a connecting shaft, the other end of the first wing rod 412 is rotatably connected to the second wing rod 413 through a connecting shaft, one end of the second wing rod 413 far away from the first wing rod 412 is rotatably connected to the front end 1 through a connecting shaft, so that when the distance between the front end 1 and the rear end 2 is reduced by the telescopic member 5, the front end 1 and the rear end 2 can extrude the first wing rod 412 and the second wing rod 413, so that the joint of the first wing rod 412 and the second wing rod 413 extends outwards, so as to expand the reaming range of the reaming bit 200, of course, in other embodiments, the number of the wing rods 41 can be set to three, four or other numbers, and no limitation is made here.
Preferably, the both ends of first wing pole 412 all are seted up jaggedly, the one end of second wing pole 413 is seted up jaggedly, the other end is with breach assorted lug, connecting hole 411 is seted up respectively on the lateral wall and the lug of breach both sides, it is concrete, the breach and the back pier base 22 of first wing pole 412 one end cooperate, the breach and the lug of second wing pole 413 of the other end cooperate, the breach and the preceding pier base 12 of second wing pole 413 cooperate, with first wing pole 412, second wing pole 413, front end 1 and rear end 2 swing joint.
Preferably, first mounting 13, preceding mound seat 12, second mounting 23 and back mound seat 22 all are equipped with threely, and body 11 and back body 21 go up the interval respectively in the front and set up, namely, first mounting 13 and preceding mound seat 12 cross arrangement, second mounting 23 and back mound seat 22 cross arrangement, breaker 4 and extensible member 5 all are equipped with corresponding three, make preceding end 1 and back end 2 atress on all directions even, the stability in use of reamer bit 200 has been improved, and simultaneously, the life of reamer bit 200 has been improved. Of course, in other embodiments, there is no limit to the number of first fixing members 13, front pier seats 12, second fixing members 23, rear pier seats 22, crushing device 4 and telescoping members 5.
The crushing device 4 further comprises a crushing tooth 43, the crushing tooth 43 is provided with a plurality of at least one surface arranged on the wing rod 41, specifically, the crushing tooth 43 is arranged on the rotating direction of the hole expanding drill bit 200, namely, the crushing tooth 43 is arranged on the side surface of the wing rod 41, when the hole expanding drill bit 200 rotates, the crushing tooth 43 can directly contact with a pile foundation defect part to clean the defect part, of course, the crushing tooth 43 can also be arranged on the outer side of the wing rod 41, and the defect part can also be cleaned. Preferably, the crushing teeth 43 are spaced apart from each other on the side of the wing rod 41, and both ends of the crushing teeth 43 extend outward and/or inward from the side of the wing rod 41, so as to increase the cleaning efficiency of the crushing device 4, and improve the connection strength between the crushing teeth 43 and the wing rod 41, thereby prolonging the service life of the reamer bit 200.
Referring to fig. 8 to 11 in combination with fig. 2, the shaft 3 includes a main rod 31 and a locking segment 32 connected to the main rod 31, wherein the main rod 31 is designed in a cylindrical shape, and a limiting surface 311 is disposed on a sidewall of the main rod 31, so that a cross section of the main rod 31 cannot be defined in a circular shape. The front end head 1 comprises a front sliding hole 14 formed in the middle of the front body 11, the shape and the size of the front sliding hole 14 are similar to those of the main rod 31, the main rod 31 can penetrate through the front sliding hole 14, the front end head 1 can be sleeved on the main rod 31, and the front end head can slide up and down relative to the main rod 31. The front slide hole 14 is provided with a limiting edge 141, and when the front end head 1 is sleeved on the main rod 31, the limiting edge 141 is matched with the limiting surface 311, so that the front end head 1 cannot rotate relative to the main rod 31, and the synchronous rotation of the front end head 1 and the main rod 31 is realized.
In this embodiment, the locking sections 32 are disposed at two ends of the main rod 31 to prevent the front end 1 and/or the rear end 2 from separating from the main rod 31, and the length of the main rod 31 is not less than the maximum distance between the front end 1 and the rear end 2, of course, in other embodiments, a protrusion may be disposed on the main rod 31 to prevent the front end 1 and the rear end 2 from separating from the main rod 31, or the locking sections 32 may respectively limit the moving range of the front end 1 and/or the rear end 2, as long as at least one of the front end 1 and the rear end 2 can freely slide on the main rod 31.
In a preferred embodiment of the present invention, the reaming assembly 100 further includes a balancing device 400 to improve the stability of the reaming bit 200 during rotation, and specifically, the balancing device 400 includes a front drill cylinder 9 and a rear drill cylinder 8, the front drill cylinder 9 is disposed at the front end of the reaming bit 200, and the rear drill cylinder 8 is disposed at the rear end of the reaming bit 200, so that the reaming bit 200, the front drill cylinder 9 and the rear drill cylinder 8 can rotate synchronously. Preceding drill barrel 9 is the same with the size of back drill barrel 8, and the pore wall of seting up on at least partial lateral wall homoenergetic of preceding drill barrel 9 and back drill barrel 8 contacts with the pile foundation, and when reamer bit 200 rotated, preceding drill barrel 9 and back drill barrel 8 restricted reamer bit 200's both ends downtheholely for reamer bit 200 rotated around same straight line, had avoided reamer bit 200 to rock at the rotation in-process, had improved reamer bit 200's stability and life.
Of course, in other embodiments, reamer assembly 100 may be provided without front drill barrel 9 and/or rear drill barrel 8, and defect clearance may be achieved by directly driving reamer head 200 via power assembly 300.
One end of the rear drill cylinder 8 is connected with the drill rod 6 of the power device 300, the other end of the rear drill cylinder 8 is connected with the rear end head 2, specifically, one end of the drill rod 6, which is close to the rear drill cylinder 8, extends outwards to form a V-shaped external thread, one end of the rear drill cylinder 8, which is close to the drill rod 6, is inwards recessed to form a V-shaped internal thread, and threaded connection of the drill rod 6 and the rear drill cylinder 8 is realized. Body 11 one side is outwards extended in order to form back external screw thread 211 before back body 21 is kept away from, bores after 8 and is equipped with back internal thread 81 on being close to the inside wall of the one end of back body 21, and back external screw thread 211 and back internal thread 81 mutually support for it passes through threaded connection to bore after 8 with back body 21.
A receiving cavity 82 is formed between the rear drill barrel 8 and the rear end 2, at least a part of the shaft 3 can be received in the receiving cavity 82, wherein the rear lock joint 322 is received in the receiving cavity 82 and can move in the receiving cavity 82. Preferably, the height of the receiving cavity 82 is adapted to the height of the shaft 3, so that the rear locking section 322 does not abut against the rear drill cylinder 8 when the front locking section 321 rises to the highest point.
Of course, in other embodiments, the rear locking section 322 may also be directly connected to the drill rod 6, specifically, one end of the rear locking section 322, which is far away from the main rod 31, is recessed inwards to form a V-shaped internal thread, one end of the drill rod 6, which is far away from the drilling machine 7, is protruded outwards to form a V-shaped external thread, and the rear locking section 322 is directly connected to the drill rod 6 through a thread, so as to drive the reamer bit 200 to rotate through the drill rod 6.
Preceding drill barrel 9 is connected with the one end that bores a section of thick bamboo 8 after being kept away from with axostylus axostyle 3, and is specific, and preceding drill barrel 9 passes through threaded connection with preceding lock festival 321, and the one end that preceding lock festival 321 is close to preceding drill barrel 9 outwards extends, forms the external screw thread of a "V" font, and the one end that preceding drill barrel 9 is close to preceding lock festival 321 inwards caves in, forms the internal screw thread of a "V" font, has realized preceding lock festival 321 and preceding drill barrel 9's threaded connection. Further, the end of the front drill cylinder 9, which is far away from the front locking joint 321, is provided with drill teeth, so that holes can be opened while defects are cleared, and the working efficiency of the reaming assembly 100 is improved.
In a preferred embodiment of the present invention, the reaming assembly 100 further includes a water hole 10, the water hole 10 sequentially penetrates through the drill rod 6, the rear drill cylinder 8, the shaft rod 3 and the front drill cylinder 9 along a central axis direction of the reaming assembly 100, water is injected into the reaming assembly 100 through the water hole 10 to reduce a temperature of the reaming assembly 100, specifically, water flows into a hole formed in a pile foundation through the water hole 10 to reduce a temperature of the reaming bit 200 when the defective portion is cleaned, meanwhile, the hole is filled with water, a material of the defective portion can be washed, light impurities float on water and flow out of the pile foundation, heavy pile foundation materials are left in the hole, the pile foundation is grouted and recast after the cleaning is completed, and a cost for treating the pile foundation defect is reduced.
During the assembly, the two ends of the crushing device 4 are connected with the front end 1 and the rear end 2 respectively, then the two ends of the telescopic piece 5 are connected with the front end 1 and the rear end 2 respectively, then the front end 1 and the rear end 2 are sleeved on the main rod 31, and then the front locking section 321 and the rear locking section 322 are installed at the two ends of the main rod 31 respectively, so that the front end 1 and the rear end 2 are limited between the front locking section 321 and the rear locking section 322, and the assembly of the reaming bit 200 is completed. And connecting the rear drilling barrel 8 with the drill rod 6, then connecting the rear end head 2 of the reaming bit 200 with the rear drilling barrel 8, and connecting the front drilling barrel 9 with the front end head 1 to complete the assembly of the reaming assembly 100.
When the reamer is used, firstly, a detection device is used for detecting a defect part of a pile foundation, then the drill 7 is used for connecting a drill barrel, at least one hole penetrating through the defect part is formed in the pile foundation, then the telescopic piece 5 of the reamer bit 200 is stretched through external force, for example, manual stretching or mechanical stretching is carried out, so that the first wing rod 412 and the second wing rod 413 are located on the same straight line, the first wing rod 412 and the second wing rod 413 are abutted against each other, the tension direction of the telescopic piece 5 is parallel to the first wing rod 412 and the second wing rod 413, after the external force is eliminated, the first wing rod 412 and the second wing rod 413 can be kept in the state of the same straight line, then the rear end 2 is connected with the rear drill barrel 8, the front end 1 is connected with the front drill barrel 9, and the reamer bit 200 is stretched into the hole and placed in the defect part.
Then, the drilling machine 7 is started to drive the drill rod 6 and the reaming bit 200 to rotate, and the reaming bit 200 can rotate to generate centrifugal force so as to break the balance state between the first wing rod 412 and the second wing rod 413, so that the first wing rod 412 and the second wing rod 413 form a certain angle and expand outwards under the action of the centrifugal force; under the combined action of the pulling force of extensible member 5 and the centrifugal force of the rotatory production of reamer bit 200, distance between front end 1 and the back end 2 reduces, angle between first wing pole 412 and the second wing pole 413 diminishes, the automatic reducing of reamer bit 200 has been realized, make breaker 4 can contact and clear up the defect position with the defect position, because the impact toughness of the normal position of pile foundation is greater than the impact toughness of defect position, when breaker 4 contacts the normal position, the impact force that breaker 4 produced is less than the impact toughness of pile foundation normal position, make breaker 4 can't clear up the normal position of pile foundation, then breaker 4 prolongs 3 downstream or the rebound of axostylus axostyle, avoid breaker 4 wearing and tearing on the one hand, in order to reduce the clearance cost, on the other hand has improved reamer bit 200's work efficiency. That is, the impact force generated by the reamer bit 200 is greater than the impact toughness of the defective portion of the pile foundation and less than the impact toughness of the normal portion of the pile foundation, the impact force is the maximum force that the reamer bit 200 can generate during the rotation process, and the impact toughness is the ability of the material to resist damage under the action of the impact force.
Finally, after the defective portion is cleaned, the drilling machine 7 stops rotating, and is pulled upwards to take out the reamer bit 200 from the hole, and in the pulling process, the outer side of the crushing device 4 is in sliding abutting contact with the wall of the defective portion, so that the angle between the first wing rod 412 and the second wing rod 413 is increased, the distance between the front end head 1 and the rear end head 2 is increased, and the telescopic piece 5 is further stretched, so that the crushing device 4 can penetrate through the hole in the pile foundation and be taken out.
In summary, the reaming assembly 100 of the present invention is configured to allow the front end 1 and the rear end 2 to be sleeved on the shaft rod 3, and the front end 1 and the rear end 2 can move up and down relative to the shaft rod 3, so that the reaming bit 200 can move freely when cleaning defects; the limit surface 311 is arranged on the shaft lever 3, so that the synchronous rotation of the rear end head 2, the shaft lever 3 and the front end head 1 is realized; the front locking section 321 and the rear locking section 322 are arranged at the two ends of the shaft rod 3, and the distance between the front locking section 321 and the rear locking section 322 is greater than the maximum distance between the front end 1 and the rear end 2, so that the front end 1 and the rear end 2 are limited on the shaft rod 3, the front end 1 and the rear end 2 are prevented from being separated from the shaft rod 3, the stability of the reaming bit 200 is improved, further, the rear locking section 322 can be directly connected with the drill rod 6, the reaming bit 200 can be suitable for different conditions, and the practicability of the reaming bit 200 is improved; the front drill barrel 9 and the rear drill barrel 8 are respectively connected to the two ends of the reaming drill bit 200, so that the reaming drill bit 200 is prevented from shaking left and right when in use, and the stability of the reaming drill bit 200 is improved when in use; by arranging the extension spring between the front end head 1 and the rear end head 2 and changing the reaming diameter of the reaming bit 200 through tension, the reaming bit 200 can automatically reduce the diameter according to the defect part.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A reamer bit for use in treating a pile defect, the reamer bit comprising: a shaft lever;
the front end head is sleeved on the shaft rod and can synchronously rotate with the shaft rod, and the front end head can move up and down relative to the shaft rod;
the rear end is sleeved on the shaft rod and can synchronously rotate with the shaft rod, and the rear end can move up and down relative to the shaft rod;
one end of the crushing device is rotationally connected with the front end head, and the other end of the crushing device is rotationally connected with the rear end head;
the telescopic piece is connected with the front end head at one end and the rear end head at the other end so as to reduce the distance between the front end head and the rear end head in a natural state, and the telescopic piece and the crushing device are arranged at intervals;
the shaft rod is provided with a locking joint which can be abutted against the front end and/or the rear end so as to limit the moving position of the front end and/or the rear end, and the length of the shaft rod is not less than the maximum distance between the front end and the rear end.
2. The reamer bit of claim 1, wherein: the lock section comprises a front lock section and a rear lock section which are respectively arranged at two ends of the shaft rod, the front end can be abutted against the front lock section, and the rear end can be abutted against the rear lock section.
3. The reamer bit of claim 1, wherein: the shaft rod comprises a limiting surface, the front end comprises a front sliding hole and a limiting edge arranged in the front sliding hole, the rear end comprises a rear sliding hole and a clamping edge arranged in the rear sliding hole, the shaft rod penetrates through the front sliding hole and the rear sliding hole, and the limiting edge and the clamping edge are respectively matched with the limiting surface, so that the shaft rod, the front end and the rear end can synchronously rotate.
4. The reamer bit of claim 1, wherein: the front end is provided with a first fixing piece, the rear end is provided with a second fixing piece, the first fixing piece and the second fixing piece are arranged oppositely, and two ends of the telescopic piece are connected with the first fixing piece and the second fixing piece respectively.
5. The reamer bit of claim 1, wherein: the crushing device comprises a connecting shaft, wherein the connecting shaft is arranged at two ends of the crushing device, and the connecting shaft respectively penetrates through the movable hole and the rotary hole, so that the crushing device is respectively connected with the front end and the rear end in a rotating manner.
6. The reamer bit of claim 5, wherein: the crushing device comprises at least two wing rods, and the adjacent two wing rods are rotatably connected through the connecting shaft.
7. The reamer bit of claim 6, wherein: the wing pole includes broken tooth, broken tooth is equipped with a plurality ofly and locates the at least one side of wing pole.
8. A reaming assembly, comprising: the reamer bit of any one of claims 1-7 comprising a power device and a drill bit coupled to the power device, the power device comprising a drill rig and a drill stem coupled to the drill rig, the drill stem coupled to the reamer bit to drive the reamer bit in rotation.
9. The reaming assembly of claim 8, wherein: the reaming assembly comprises a balancing device, the balancing device comprises a rear drilling barrel and a front drilling barrel, one end of the rear drilling barrel is connected with the drill rod, the other end of the rear drilling barrel is connected with the rear end, an accommodating cavity is formed between the rear end and the rear drilling barrel, at least part of the shaft rod is accommodated in the accommodating cavity, and the front drilling barrel is connected with one end, far away from the rear drilling barrel, of the shaft rod.
10. The reaming assembly of claim 9, wherein: the reaming assembly comprises a water hole, the water hole sequentially penetrates through the drill rod, the rear drilling barrel, the shaft rod and the front drilling barrel along the direction of the central axis of the reaming assembly, and water is injected into the reaming assembly through the water hole so as to reduce the temperature of the reaming assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242258.7A CN114575750A (en) | 2022-03-11 | 2022-03-11 | Reaming bit and reaming assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242258.7A CN114575750A (en) | 2022-03-11 | 2022-03-11 | Reaming bit and reaming assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114575750A true CN114575750A (en) | 2022-06-03 |
Family
ID=81775417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210242258.7A Pending CN114575750A (en) | 2022-03-11 | 2022-03-11 | Reaming bit and reaming assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114575750A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202796Y (en) * | 1993-08-01 | 1995-07-05 | 李长仁 | Flexible reaming drill bit |
| CN2622375Y (en) * | 2003-04-30 | 2004-06-30 | 陆观宏 | Borehole enlarging bit for anchor rod, anchor cable and pile in civil engineering |
| CN101315021A (en) * | 2007-05-29 | 2008-12-03 | 煤炭科学研究总院 | Automatic reducing borehole-enlarging drilling tool |
| KR100998622B1 (en) * | 2010-07-14 | 2010-12-06 | 이인귀 | Expaned type bit anchor |
| CN203626614U (en) * | 2013-10-29 | 2014-06-04 | 河南理工大学 | Drill variable in thrust and diameter |
| CN204782765U (en) * | 2015-06-01 | 2015-11-18 | 广东文理职业学院 | Reaming device |
| CN108547576A (en) * | 2018-04-16 | 2018-09-18 | 郑州勤睿恒电子科技有限公司 | Become water pressure pulse and controls drilling tool |
| CN209780758U (en) * | 2019-03-26 | 2019-12-13 | 焦作市神龙水文地质工程有限公司 | Hard rock reaming and repairing device for ground directional horizontal drilling |
| CN111946259A (en) * | 2020-08-14 | 2020-11-17 | 江苏省岩土工程勘察设计研究院 | Method for forming hole of cast-in-situ bored pile |
| CN111980586A (en) * | 2020-07-27 | 2020-11-24 | 江苏省中成建设工程总公司 | Hydraulic hole expanding circulating drilling machine and hole expanding pile construction method thereof |
-
2022
- 2022-03-11 CN CN202210242258.7A patent/CN114575750A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202796Y (en) * | 1993-08-01 | 1995-07-05 | 李长仁 | Flexible reaming drill bit |
| CN2622375Y (en) * | 2003-04-30 | 2004-06-30 | 陆观宏 | Borehole enlarging bit for anchor rod, anchor cable and pile in civil engineering |
| CN101315021A (en) * | 2007-05-29 | 2008-12-03 | 煤炭科学研究总院 | Automatic reducing borehole-enlarging drilling tool |
| KR100998622B1 (en) * | 2010-07-14 | 2010-12-06 | 이인귀 | Expaned type bit anchor |
| CN203626614U (en) * | 2013-10-29 | 2014-06-04 | 河南理工大学 | Drill variable in thrust and diameter |
| CN204782765U (en) * | 2015-06-01 | 2015-11-18 | 广东文理职业学院 | Reaming device |
| CN108547576A (en) * | 2018-04-16 | 2018-09-18 | 郑州勤睿恒电子科技有限公司 | Become water pressure pulse and controls drilling tool |
| CN209780758U (en) * | 2019-03-26 | 2019-12-13 | 焦作市神龙水文地质工程有限公司 | Hard rock reaming and repairing device for ground directional horizontal drilling |
| CN111980586A (en) * | 2020-07-27 | 2020-11-24 | 江苏省中成建设工程总公司 | Hydraulic hole expanding circulating drilling machine and hole expanding pile construction method thereof |
| CN111946259A (en) * | 2020-08-14 | 2020-11-17 | 江苏省岩土工程勘察设计研究院 | Method for forming hole of cast-in-situ bored pile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9062504B2 (en) | Rock drill bit, a drilling assembly and a method for percussive rock drilling | |
| CN106812470B (en) | A kind of borehole-enlarging drilling tool | |
| CN111851490B (en) | CFG pile cutting machine | |
| CN101105116A (en) | Reamer bit structure | |
| CN114657989A (en) | Annular hydraulic pile breaking machine and double-head swingable drill rod thereof | |
| CN214463873U (en) | High-speed drilling machine suitable for weathered rock stratum | |
| CN114575750A (en) | Reaming bit and reaming assembly | |
| CN111794685A (en) | Impact PDC drill bit | |
| CN208330246U (en) | Split type well wall repairing device | |
| CN113605911B (en) | Cutter head assembly, tunneling equipment and tunneling construction method | |
| CN214886883U (en) | Manual hole digging mechanical auxiliary device | |
| CN107060649B (en) | A kind of reaming drilling machine | |
| CN211777170U (en) | Pneumatic impact spiral drill bit | |
| CN209369731U (en) | For abolishing the drill bit of waste and old tubular pole | |
| CN210660033U (en) | Drill rod washover tool | |
| CN108005583A (en) | Bored for the self-control core drill of pore-forming on the basis of hydroelectric project and the broken core of self-control | |
| CN210509092U (en) | A core machine is got in drilling for road surface quality testing | |
| CN108798528B (en) | Drill bit for breaking waste pipe piles and method for breaking waste pipe piles and filling new piles | |
| CN206503561U (en) | A kind of drill bit for geotechnical boring | |
| CN201326378Y (en) | Expanding drill for foundation construction of high-tension line iron tower | |
| CN206707633U (en) | A kind of borehole-enlarging drilling tool | |
| CN111550188A (en) | Reaming device for reinforcing soft soil foundation | |
| CN220013744U (en) | Soil loosening device for open caisson | |
| CN117927170B (en) | Geological exploration drilling equipment and method for constructional engineering | |
| CN109372561B (en) | Anchor cable drill rod |
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 |