CN215565741U - Rotary drilling and reaming drill bit capable of realizing multi-stage reaming and reaming equipment - Google Patents
Rotary drilling and reaming drill bit capable of realizing multi-stage reaming and reaming equipment Download PDFInfo
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- CN215565741U CN215565741U CN202122068410.8U CN202122068410U CN215565741U CN 215565741 U CN215565741 U CN 215565741U CN 202122068410 U CN202122068410 U CN 202122068410U CN 215565741 U CN215565741 U CN 215565741U
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Abstract
The application discloses but multistage reaming digs bores reaming drill bit and reaming equipment soon includes: the inner cylinder, the first retaining ring and the second retaining ring; the first check ring and the second check ring are sleeved on the outer side of the inner cylinder, the first check ring is positioned below the second check ring, and the diameter of the first check ring is smaller than that of the second check ring; the lower end of the inner cylinder, the lower end of the first retaining ring and the lower end of the second retaining ring are all provided with a plurality of cutting teeth along the circumferential direction. This application has realized guaranteeing that the drill bit footage is unanimous, avoids the footage difference to lead to drill bit slope and drilling rod fracture, guarantees the pile foundation straightness that hangs down to improve the technological effect who creeps into efficiency, solved when reaming, the axis of barrel drill produces the skew with the axis of aperture easily, consequently produces the slope easily at the footage in-process drill bit, it is great to lead to whole pile foundation straightness deviation of hanging down, and easily lead to the cracked problem of drilling rod because of the atress inequality behind the secondary reaming deviation.
Description
Technical Field
The application relates to the technical field of pile foundation reaming construction, in particular to a rotary drilling and reaming bit capable of realizing multi-stage reaming and reaming equipment.
Background
The large-diameter cast-in-situ bored pile has large bearing capacity, can meet the requirement of a single pile and a single column, and is increasingly widely popularized and applied, the cast-in-situ bored pile construction process under the conventional geological condition is greatly developed, but the high-strength rock stratum large-diameter pile foundation is difficult to form a hole at one time, and a grading reaming technology is mostly adopted. The hierarchical reaming technique among the correlation technique is bored for the section of thick bamboo that adopts different diameters and is carried out reaming many times to the aperture, because when reaming, the axis of section of thick bamboo brill produces the skew with the axis of aperture easily, consequently advances the easy slope that produces of chi in-process drill bit, leads to whole pile foundation straightness deviation of hanging down great to easily lead to the drilling rod fracture because of the atress is uneven after the secondary reaming off normal.
When reaming among the correlation technique, the axis of barrel drill produces the skew with the axis of aperture easily, consequently produces the slope easily at footage in-process drill bit, leads to whole pile foundation straightness deviation of hanging down great to easily lead to the cracked problem of drilling rod because of the atress is uneven after the secondary reaming off normal, effective solution has not been proposed yet at present.
SUMMERY OF THE UTILITY MODEL
The main aim at of this application provides a but multistage reaming digs reamer bit and reaming equipment soon to when reaming in solving the correlation technique, the axis of a barrel drill produces the skew with the axis of aperture easily, consequently produces the slope easily at footage in-process drill bit, leads to whole pile foundation straightness deviation of hanging down great, and easily leads to the cracked problem of drilling rod because of the atress is uneven after the secondary reaming off normal.
In order to realize the above-mentioned purpose, this application provides a but multi-stage reaming dig soon and bore reaming drill bit, but this multi-stage reaming dig soon and bore reaming drill bit includes: the inner cylinder, the first retaining ring and the second retaining ring; wherein the content of the first and second substances,
the first check ring and the second check ring are sleeved on the outer side of the inner cylinder, the first check ring is positioned below the second check ring, and the diameter of the first check ring is smaller than that of the second check ring;
the lower end of the inner cylinder, the lower end of the first retaining ring and the lower end of the second retaining ring are all provided with a plurality of cutting teeth along the circumferential direction.
The first connecting pieces are arranged between the first check ring and the inner cylinder and are arranged along the circumferential direction of the inner cylinder;
the first end of the first connecting piece is fixedly connected with the outer surface of the inner cylinder, and the second end of the first connecting piece is fixedly connected with the inner side of the first check ring.
The second connecting pieces are arranged between the second retainer ring and the inner cylinder and are arranged along the circumferential direction of the inner cylinder;
the first end of the second connecting piece is fixedly connected with the outer surface of the inner barrel, and the second end of the second connecting piece is fixedly connected with the inner side of the second retaining ring.
Further, the distance between the first retainer ring and the inner cylinder is half of the distance between the second retainer ring and the inner cylinder.
Furthermore, the first connecting piece and the second connecting piece are both made of steel plates with the thickness of 3 cm.
Furthermore, the first check ring and the second check ring are both made of steel plates with the thickness of 3 cm.
Furthermore, the cutting teeth on the first retainer ring, the cutting teeth on the second retainer ring and the cutting teeth on the inner cylinder are arranged in a staggered mode.
Further, the upper end of inner tube is provided with the installed part, the mounting groove has been seted up on the installed part.
Furthermore, the mounting piece is arranged in a square shape, and the mounting groove is arranged at the upper end of the mounting piece in a square shape;
four stiffening ribs are arranged at the upper end of the inner barrel, and the side faces of the stiffening ribs are fixedly connected with the four corners of the mounting groove.
According to another aspect of the application, a reaming device is provided, and the reaming device comprises the rotary drilling reaming bit capable of multi-stage reaming.
In the embodiment of the application, the inner cylinder, the first retainer ring and the second retainer ring are arranged; the first check ring and the second check ring are sleeved on the outer side of the inner cylinder, the first check ring is positioned below the second check ring, and the diameter of the first check ring is smaller than that of the second check ring; the inner tube lower extreme first retaining ring lower extreme with second retaining ring lower extreme all is provided with a plurality of picks along circumference, reached and adopted the inner tube the same with former aperture diameter to lead, utilize first retaining ring and second retaining ring to carry out the mesh of second grade reaming at a reaming in-process, thereby realized guaranteeing that the drill bit footage is unanimous, avoid the footage difference to lead to drill bit slope and drilling rod fracture, guarantee the pile foundation straightness that hangs down, and improve the technical effect of drilling efficiency, and then solved in the correlation technique when reaming, the axis of cylinder drill produces the skew with the axis of aperture easily, consequently, the drill bit produces the slope easily at footage in-process, lead to whole pile foundation straightness deviation great, and easily lead to the cracked problem of drilling rod because of the atress is uneven after the secondary reaming off normal.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
the cutting device comprises an inner cylinder 1, a cutting tooth 2, a second retainer ring 3, a stiffening rib 4, a mounting part 5, a mounting groove 6, a second connecting part 7, a first connecting part 8 and a first retainer ring 9.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, an embodiment of the present application provides a multi-stage reaming rotary drilling reamer bit, which includes: the inner cylinder 1, the first retainer ring 9 and the second retainer ring 3; wherein the content of the first and second substances,
the first retainer ring 9 and the second retainer ring 3 are sleeved on the outer side of the inner cylinder 1, the first retainer ring 9 is positioned below the second retainer ring 3, and the diameter of the first retainer ring 9 is smaller than that of the second retainer ring 3;
the lower end of the inner cylinder 1, the lower end of the first retainer ring 9 and the lower end of the second retainer ring 3 are all provided with a plurality of cutting teeth 2 along the circumferential direction.
In the construction of the large-diameter overlong pile foundation, when a large-diameter drill bit is difficult to continue drilling, if a small-diameter drill bit is directly replaced for drilling, the central axes of large and small-diameter hole sites are difficult to coincide, so that deviation is caused. In this embodiment, the inner cylinder 1 is cylindrical, and the diameter of the inner cylinder 1 is consistent with the diameter of the small hole when the hole is not expanded. After the small-diameter roller bit drills to the bottom of the pile, the drilling slag is fished out, the rotary drilling and reaming bit is replaced and slowly lowered to the reaming surface, the position of the drill rod is adjusted to ensure that the lower end of the inner cylinder 1 smoothly enters the drilled area, and then the cutting tooth 2 which is lowered to the lower end of the first retainer ring 9 is continuously lowered to be in contact with the soil body. Because the diameter of inner tube 1 is the same with the regional diameter of pore-forming, consequently at the in-process of drilling, the axis of inner tube 1 and the axis coincidence of pore-forming, and the axis coincidence of the axis of first retaining ring 9 and second retaining ring 3 and inner tube 1, consequently at the guide effect that reams in-process inner tube 1 can play and bore first retaining ring 9 and second retaining ring 3, guaranteed that the pressure of each direction is unanimous when reaming, has very big improvement to the straightness control of hanging down of pile foundation. Adopt this reamer bit can ensure that the drill bit footage is unanimous, avoid the footage difference to lead to the drill bit slope, drill bit and pore wall scratch lead to the sticking of a drill when preventing to carry the drill bit, in actual work progress, the effect is outstanding.
Because first retaining ring 9 is located second retaining ring 3 below, and the diameter of first retaining ring 9 is less than the diameter of second retaining ring 3, consequently carry out one-level reaming by pick 2 on first retaining ring 9 and the first retaining ring 9 earlier at the reaming in-process, then carry out the second grade reaming by pick 2 on the bigger second retaining ring 3 of diameter and the second retaining ring 3 again, thereby realize accomplishing multistage reaming's technological effect in reaming construction once, improve the efficiency of construction. When the first retaining ring 9 and the second retaining ring 3 are expanded, the retaining rings cut the soil body, the soil body inwards collapses and is crushed by the inner barrel 1.
This embodiment adopts the inner tube 1 the same with former aperture diameter to lead, utilize first retaining ring 9 and second retaining ring 3 to carry out the second grade reaming at a reaming in-process, it carries out multistage reaming in a construction to have realized, and it is unanimous to ensure the drill bit footage, avoid the footage difference to lead to drill bit slope and drilling rod fracture, guarantee the pile foundation straightness that hangs down, improve the technological effect of drilling efficiency, when reaming in the correlation technique, the axis of a section of thick bamboo brill produces the skew with the axis of aperture easily, consequently, the drill bit produces the slope easily at the footage in-process, it is great to lead to whole pile foundation straightness deviation of hanging down, and easily lead to the cracked problem of drilling rod because of the atress is uneven after the secondary reaming off normal.
As shown in fig. 1, the device further comprises a plurality of first connecting pieces 8, wherein the plurality of first connecting pieces 8 are arranged between the first retainer ring 9 and the inner cylinder 1 and are arranged along the circumferential direction of the inner cylinder 1;
the first end of the first connecting piece 8 is fixedly connected with the outer surface of the inner cylinder 1, and the second end of the first connecting piece 8 is fixedly connected with the inner side of the first retainer ring 9.
The second connecting pieces 7 are arranged between the second retaining ring 3 and the inner cylinder 1 and are arranged along the circumferential direction of the inner cylinder 1;
the first end of the second connecting piece 7 is fixedly connected with the outer surface of the inner cylinder 1, and the second end of the second connecting piece 7 is fixedly connected with the inner side of the second retainer 3.
Specifically, it should be noted that, connect through first connecting piece 8 between first retaining ring 9 and the inner tube 1, for the stability and the joint strength that improve the two and connect, first connecting piece 8 sets up to a plurality ofly and winds the circumference evenly distributed of inner tube 1, and the specific quantity that sets up of first connecting piece 8 can be decided according to the diameter of first retaining ring 9 and inner tube 1. The first end of the first connecting piece 8 and the outer surface of the inner cylinder 1 are fixed by welding, and the second end and the inner ring of the first check ring 9 are also fixed by welding. The second retainer ring 3 and the inner cylinder 1 are arranged in the same way, and the diameter of the second retainer ring 3 is larger than that of the first retainer ring 9, so that the distance between the second retainer ring and the inner cylinder 1 is larger, namely the length of the second connecting piece 7 is larger than that of the first connecting piece 8. The arrangement mode of the second connecting piece 7 is the same as that of the first connecting piece 8, namely the first end of the second connecting piece 7 is welded and fixed with the outer surface of the inner cylinder 1, and the second end is welded and fixed with the inner side of the second retainer 3.
As shown in fig. 1, the distance between the first retainer ring 9 and the inner cylinder 1 is half of the distance between the second retainer ring 3 and the inner cylinder 1, so that the stepped reaming drilling of the first retainer ring 9 and the second retainer ring 3 is facilitated.
As shown in fig. 1, the first connecting member 8 and the second connecting member 7 are each made of a steel plate having a thickness of 3 cm. The first retainer ring 9 and the second retainer ring 3 are both made of steel plates with the thickness of 3 cm.
As shown in fig. 1, the picks 2 on the first retainer ring 9, the picks 2 on the second retainer ring 3, and the picks 2 on the inner cylinder 1 are all arranged in a staggered manner, so that soil is conveniently crushed, and the reamer bit is easier to drill.
As shown in fig. 1, the upper end of the inner cylinder 1 is provided with a mounting piece 5, the mounting piece 5 is provided with a mounting groove 6, the mounting piece 5 is arranged in a square shape, and the mounting groove 6 is arranged at the upper end of the mounting piece 5 in a square shape;
four stiffening ribs 4 are arranged at the upper end of the inner barrel 1, and the side surfaces of the stiffening ribs 4 are fixedly connected with four corners of the mounting groove 6.
Specifically, it should be noted that the upper end of the inner cylinder 1 is fixedly connected with the drill rod through the installation part 5, namely the drill rod is fixed in the installation groove 6 of the installation part 5, and the installation groove 6 is square in order to enable the drill rod to stably drive the inner cylinder 1 to rotate. In order to improve the structural strength of the mounting part 5, a stiffening rib 4 is arranged around the mounting part 5, the stiffening rib 4 is in a right triangle shape, one vertical side is welded and fixed on the side of the mounting part 5, and the other vertical side is welded and fixed on the upper end of the inner barrel 1.
According to another aspect of the application, a reaming device is provided, and the reaming device comprises the rotary drilling reaming bit capable of multi-stage reaming.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a but multistage reaming dig reaming drill bit, its characterized in that includes: the inner cylinder, the first retaining ring and the second retaining ring; wherein the content of the first and second substances,
the first check ring and the second check ring are sleeved on the outer side of the inner cylinder, the first check ring is positioned below the second check ring, and the diameter of the first check ring is smaller than that of the second check ring;
the lower end of the inner cylinder, the lower end of the first retaining ring and the lower end of the second retaining ring are all provided with a plurality of cutting teeth along the circumferential direction.
2. The rotary drilling and reaming bit capable of reaming multiple stages according to claim 1, further comprising a plurality of first connectors, wherein the plurality of first connectors are arranged between the first retainer ring and the inner cylinder and are arranged along the circumferential direction of the inner cylinder;
the first end of the first connecting piece is fixedly connected with the outer surface of the inner cylinder, and the second end of the first connecting piece is fixedly connected with the inner side of the first check ring.
3. The rotary drilling and reaming bit capable of reaming multiple stages according to claim 2, further comprising a plurality of second connectors, wherein the plurality of second connectors are arranged between the second retainer ring and the inner cylinder and are arranged along the circumferential direction of the inner cylinder;
the first end of the second connecting piece is fixedly connected with the outer surface of the inner barrel, and the second end of the second connecting piece is fixedly connected with the inner side of the second retaining ring.
4. The rotary drilling and reaming bit capable of reaming multiple stages according to claim 3, wherein the distance between the first retaining ring and the inner cylinder is half of the distance between the second retaining ring and the inner cylinder.
5. The rotary drilling and reaming bit capable of multi-stage reaming according to claim 3 or 4, wherein the first connecting piece and the second connecting piece are both made of steel plates with the thickness of 3 cm.
6. The rotary drilling and reaming bit capable of multi-stage reaming according to claim 5, wherein the first retaining ring and the second retaining ring are made of steel plates with the thickness of 3 cm.
7. The rotary drilling and reaming bit capable of multi-stage reaming according to claim 6, wherein picks on the first retaining ring, picks on the second retaining ring and picks on the inner cylinder are arranged in a staggered manner.
8. The rotary drilling and reaming bit capable of reaming multiple stages according to claim 7, wherein a mounting piece is arranged at the upper end of the inner cylinder, and a mounting groove is formed in the mounting piece.
9. The rotary drilling and reaming bit capable of multi-stage reaming according to claim 8, wherein the mounting piece is arranged in a square shape, and the mounting groove is arranged at the upper end of the mounting piece in a square shape;
four stiffening ribs are arranged at the upper end of the inner barrel, and the side faces of the stiffening ribs are fixedly connected with the four corners of the mounting groove.
10. A reaming device, characterized by comprising the rotary drilling reaming bit capable of multi-stage reaming according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122068410.8U CN215565741U (en) | 2021-08-30 | 2021-08-30 | Rotary drilling and reaming drill bit capable of realizing multi-stage reaming and reaming equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122068410.8U CN215565741U (en) | 2021-08-30 | 2021-08-30 | Rotary drilling and reaming drill bit capable of realizing multi-stage reaming and reaming equipment |
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| Publication Number | Publication Date |
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| CN215565741U true CN215565741U (en) | 2022-01-18 |
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| CN202122068410.8U Active CN215565741U (en) | 2021-08-30 | 2021-08-30 | Rotary drilling and reaming drill bit capable of realizing multi-stage reaming and reaming equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696332A (en) * | 2023-04-20 | 2023-09-05 | 中交第四航务工程局有限公司 | Composite drill bit accurate positioning device for rotary pile digger on barge |
-
2021
- 2021-08-30 CN CN202122068410.8U patent/CN215565741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696332A (en) * | 2023-04-20 | 2023-09-05 | 中交第四航务工程局有限公司 | Composite drill bit accurate positioning device for rotary pile digger on barge |
| CN116696332B (en) * | 2023-04-20 | 2024-03-01 | 中交第四航务工程局有限公司 | Composite drill bit accurate positioning device for rotary pile digger on barge |
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