CN113482539B - Roller bit with pressure detection function - Google Patents
Roller bit with pressure detection function Download PDFInfo
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- CN113482539B CN113482539B CN202110921667.5A CN202110921667A CN113482539B CN 113482539 B CN113482539 B CN 113482539B CN 202110921667 A CN202110921667 A CN 202110921667A CN 113482539 B CN113482539 B CN 113482539B
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- roller
- pressure
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- 238000001514 detection method Methods 0.000 title claims abstract description 103
- 238000001125 extrusion Methods 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 17
- 210000004907 gland Anatomy 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000009530 blood pressure measurement Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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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
- E21B10/08—Roller bits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Fluid Pressure (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a roller bit with pressure detection, which comprises a roller, a roller main body, a bit leg and a pressure detection assembly, wherein: the cone is rotatably arranged on the palm; the pressure detection assembly comprises a detection head and a pressure sensor, the detection head is slidably mounted on the tooth palm, the displacement of the detection head sliding relative to the tooth palm along the cone is vertical to the axis of the cone rotating relative to the tooth palm, the pressure sensor is mounted on the cone and connected with the detection head, and the pressure sensor is used for detecting the extrusion pressure applied to the detection head; the bit leg is fixed on the cone main body; the cone, the pressure detection assembly and the bit leg are respectively provided with a plurality of cone, pressure detection assembly and bit leg, which are corresponding to each other. According to the roller bit with the pressure detection, the position of the detection head is changed according to the rotation of each roller relative to the roller body in the drilling process, so that the extrusion force of a medium on the detection head is changed, and whether the roller is blocked relative to the bit leg or not is judged by detecting the pressure of the detection head.
Description
Technical Field
The invention relates to the technical field of drilling bits, in particular to a roller bit with a pressure detection function.
Background
Roller cone drill bits are one of the most widely used types of drilling bits. When the roller bit works, the cutting teeth alternately contact with the bottom of the well, the rock breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and the roller bit is easy to be eaten into the stratum; the total length of the working edge is large, and thus the wear is relatively reduced. Roller cone drill bits are capable of accommodating a wide variety of formations from soft to hard. Conventional roller cone bits typically include three cones mounted on a bit body by legs, each cone being rotatably connected to its associated leg. In the drilling process, an external driving mechanism drives the drill bit body to rotate, so that the roller cones rotate relative to the bit leg due to friction of the roller cones and a medium, if at least one roller cone is stuck and cannot rotate relative to the corresponding bit leg, the loss of other roller cones is increased, the drilling efficiency is low, the situation is not easy to discover, especially, when one roller cone is stuck and the other two roller cones can continuously work, the situation is not easy to discover, the drilling efficiency is reduced on the one hand, and the loss of other roller cones is increased on the other hand.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a roller bit with pressure detection.
The invention provides a roller bit with pressure detection, which comprises a roller, a roller body, a palm and a pressure detection assembly, wherein:
the cone is rotatably arranged on the palm;
the pressure detection assembly comprises a detection head and a pressure sensor, the detection head is slidably mounted on the palm of the cone, the displacement of the detection head sliding relative to the palm of the cone along the cone is vertical to the axis of the cone rotating relative to the palm of the cone, the pressure sensor is mounted on the cone and connected with the detection head, and the pressure sensor is used for detecting the extrusion pressure of the detection head;
the bit leg is fixed on the cone main body;
the cone, the pressure detection assembly and the bit leg are respectively provided with a plurality of cone, pressure detection assembly and bit leg, which are corresponding to each other.
Preferably, under the condition of no stress, the extending part of the detection head relative to the roller cone is lower than the height of the drilling teeth on the roller cone, so that the drilling teeth on the roller cone contact with a medium firstly in the drilling process, the abrasion to the detection head is reduced, and the detection precision is further ensured.
Preferably, the top of the detection head is spherical, so that the abrasion to the detection head is reduced.
Preferably, it has the mounting hole to open on the gear wheel, detects first slidable mounting in the mounting hole, and pressure sensor fixes in the mounting hole, and pressure sensor and detecting are equipped with between the head and detect the elastic component, and the slip direction that detects the head that detects the elastic component can be followed and elastic deformation takes place, and the extrusion force that the head received is detected in the installation of the pressure sensor of being convenient for and detection head.
Preferably, the outer side wall of the detection head is provided with an elastic sliding part, the outer wall of the mounting hole is provided with a sliding groove, and the elastic sliding part extends to the sliding groove to limit the detection head and can slide in the sliding groove, so that the detection sliding head can be conveniently mounted and limited.
Preferably, the pressure sensor is fixed in the mounting hole through a gland, the gland is fixed on the roller, the pressure sensor is fixed and dismounted through dismounting and fixing the gland, and the pressure sensor is convenient to mount.
In order to reduce the impact on the pressure sensor and facilitate the installation and the disassembly of the pressure sensor, preferably, the gland comprises a pressing plate, a fixed elastic piece, a fixed sliding rod, an extrusion block, a pressing column and a cover plate, wherein:
the clamp plate slidable mounting has the slip fixed orifices in the mounting hole, the lateral wall of clamp plate is opened, fixed slide bar slidable mounting is in the slip fixed orifices, the one end that pressure sensor was kept away from to the clamp plate is opened there is the sliding tray, sliding tray and slip fixed orifices intercommunication, extrusion piece slidable mounting is in the sliding tray, and the gliding displacement of extrusion piece is perpendicular with the gliding displacement of clamp plate, fixed elastic component is fixed between extrusion piece and clamp plate, and fixed elastic component can follow the extrusion plate slip direction and take place elastic deformation, the inner wall of mounting hole is opened there is the joint hole, fixed slide bar matches with the joint hole.
One end of the pressing column is clamped on the extrusion block, and the other end of the pressing column is fixed on the cover plate;
the cover plate is fixed in the mounting hole and seals the mounting hole.
The pressure sensor connecting wire is convenient to connect, the phenomenon that the pressure sensor connecting wire is wound in a disordered mode in the rotating process of the cone is avoided, preferably, a wire hole is formed in the cone and communicated with the mounting hole, a bit leg connecting hole is formed in the bit leg and communicated with the wire hole, and a through hole is formed in the pressing plate to facilitate the connection of the pressure sensor.
Preferably, the bit leg wiring hole comprises a first wiring hole and a second wiring hole, the axis of the first wiring hole coincides with the axis of the cone relative to the rotation of the bit leg, one end of the first wiring hole is communicated with the wire guide hole, and the second wiring hole is communicated with the other end of the first wiring hole.
Preferably, the cone body is provided with a main wiring through hole along the axial direction of the cone body, and the main wiring through hole is communicated with the cone leg wiring hole.
According to the roller bit with the pressure detection, the position of the detection head is changed according to the rotation of each roller relative to the roller body in the drilling process, so that the extrusion force of a medium on the detection head is changed, and whether the roller is blocked relative to a bit leg is judged by detecting the pressure of the detection head; further, by detecting the pressure change period, workers can indirectly know the rotating speed of the cone relative to the bit leg, so that the lubricating condition of each cone can be known, and corresponding measures can be taken on the cone with slow rotating speed in time.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of the area A of the present invention;
FIG. 4 is an enlarged view of a portion of the area B of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
A roller cone bit with pressure detection as shown in fig. 1-4, comprising a roller cone 1, a roller cone body 2, a bit leg 3, and a pressure detection assembly, wherein:
the cone 1 is rotatably installed on the cone leg 3, the cone leg 3 is provided with a connecting column protruding outwards, the cone 1 is rotatably sleeved on the connecting column, and the rotary connection between the cone 1 and the cone leg 3 belongs to the prior art, so that the details are not repeated in the embodiment;
the pressure detection assembly comprises a detection head 4 and a pressure sensor 5, the detection head 4 is slidably mounted on the bit leg 3, the sliding displacement of the detection head 4 along the cone 1 relative to the bit leg 3 is vertical to the axis of the cone 1 relative to the rotation of the bit leg 3, the pressure sensor 5 is mounted on the cone 1 and connected with the detection head 4, and the pressure sensor 5 is used for detecting the extrusion pressure of the detection head 4;
the bit leg 3 is fixed on the cone body 2 by welding or bolts and other existing fixing modes;
the cone 1, the pressure detection assemblies and the cone legs 3 are respectively provided with a plurality of three cone 1, pressure detection assemblies and cone legs 3 which are in one-to-one correspondence, namely, one group of pressure detection assemblies is arranged on one cone 1, one cone 1 is arranged on one cone leg 3, and the three groups of cone legs 3 are uniformly distributed on the cone main body 2;
in order to reduce the wear of the detection head 4, in this embodiment, it is preferable that the top of the detection head 4 is a spherical surface, and under the condition of no stress, the part of the detection head 4 extending relative to the roller cone 1 is lower than the height of the drill bit on the roller cone 1;
specifically, a mounting hole 10 is formed in the cone 1, an axis of the mounting hole 10 is perpendicular to an axis of rotation of the cone 1, specifically, the mounting hole 10 is along a radial direction of the cone 1, the detection head 4 is slidably mounted in the mounting hole 10 along an axis direction of the mounting hole 10, the pressure sensor 5 is fixed in the mounting hole 10, a detection elastic member 6 is arranged between the pressure sensor 5 and the detection head 4, the detection elastic member 6 can elastically deform along a sliding direction of the detection head 4, the detection elastic member 6 can be an elastic member such as a spring, in the embodiment, the detection elastic member 6 is preferably a spring, has good high temperature resistance, and can work under a relatively severe condition, specifically, one end of the spring is fixed at one end of the pressure sensor 5, and the other end of the spring abuts against a tail end of the detection head 4, when a top end of the detection head 4 is pressed, the spring is pressed to further press the pressure sensor 5, and preferably, in order to increase detection accuracy, when the head 4 is not pressed by an external force, the spring is in a compressed state, and further, the spring abuts against the detection head 4;
the outer side wall of the detection head 4 is provided with an elastic sliding part 7, the outer wall of the mounting hole 10 is provided with a sliding chute 100, the length direction of the sliding chute 100 is along the axial direction of the mounting hole 10, the elastic sliding part 7 extends to the sliding chute 100 to limit the detection head 4 and can slide in the sliding chute 100, concretely, the elastic sliding part 7 comprises an outer cylinder 70, an inner cylinder 71 and a spring 72, the outer side wall of the detection head 4 is provided with a sliding hole 40 along the radial direction of the detection head, the outer cylinder 70 is fixed in the sliding hole 40, the inner cylinder 71 is sleeved in the outer cylinder 70, the spring 72 is fixed between the outer cylinder 70 and the inner cylinder 71, the inner cylinder 71 is extruded to enable the inner cylinder 71 to extend and retract into the outer cylinder 70, then the detection head 4 slides into the mounting hole 10, when the inner cylinder 71 is opposite to the sliding chute 100, the inner cylinder 71 is ejected out of the outer cylinder 70 and is abutted against the sliding chute 100 to further realize the positioning of the inner cylinder, when the detection head 4 is extruded from the outside, the detection head 4 moves towards the direction close to the pressure sensor 5, the inner cylinder 71 moves in the sliding chute 100, and the detection head 4 is limited in order to limit the mounting hole 10, and the limited ring is the bottom end of the sliding chute 100;
the pressing plate 80 is slidably mounted in the mounting hole 10, the pressing plate 80 is located at one end, away from the detection head 4, of the pressure sensor 5, a sliding fixing hole 800 is formed in the side wall of the pressing plate 80, the fixing sliding rod 82 is slidably mounted in the sliding fixing hole 800, a sliding groove 801 is formed in one end, away from the pressure sensor 5, of the pressing plate 80, the sliding groove 801 is communicated with the sliding fixing hole 800, the extrusion block 83 is slidably mounted in the sliding groove 801, sliding displacement of the extrusion block 83 is perpendicular to sliding displacement of the pressing plate 80, the fixing elastic piece 81 is fixed between the extrusion block 83 and the pressing plate 80 and can elastically deform along the sliding direction of the extrusion plate 80, a clamping hole 101 is formed in the inner wall of the mounting hole 10, and the fixing sliding rod 82 is matched with the clamping hole 101; preferably, the surface of the extrusion block 83 opposite to the fixed slide rod 82 is an inclined surface, the surface of the fixed slide rod 82 opposite to the extrusion block 83 is also an inclined surface, the inclined surface of the fixed slide block and the inclined surface of the extrusion block 83 abut against in the same plane, the extrusion plate 80 is made to move towards the direction close to the pressure sensor 5 by extruding the extrusion plate 80, the inclined surface of the fixed slide block abuts against the inclined surface of the extrusion block 83, so that the fixed slide rod 82 moves towards the direction close to the clamping hole 101, the extrusion block 83 is continuously extruded to make one end of the fixed slide rod 82 slide into the clamping hole 101, when the extrusion block 83 is located at the position farthest away from the pressure sensor 5, the fixed slide rod 82 is located in the sliding fixed hole 800, and in order to facilitate the resetting of the fixed slide rod 82, preferably, a reset spring is fixed in the clamping hole 101 and not shown in the drawing, and when not being extruded by the extrusion block 83, the reset spring assists the fixed slide rod 82 to slide into the sliding fixed hole 800 under the action of the reset spring;
one end of the pressure column 84 is clamped on the extrusion block 83, the other end of the pressure column 84 is fixed on the cover plate 85 in a welding mode, the pressure column 84 is separated from the extrusion block 83 when the cover plate 85 is taken down, and the pressure plate 80 is axially and radially fixed when the cover plate 85 is installed;
the cover plate 85 is fixed in the mounting hole 10 in a welding or screw fixing mode and seals the mounting hole 10;
the cone 1 is provided with a wire guide hole 102, the wire guide hole 102 is communicated with the mounting hole 10, the bit leg 3 is provided with a bit leg wiring hole 30, the bit leg wiring hole 30 is communicated with the wire guide hole 102, the pressing plate 80 is also provided with a through hole, and the through hole is communicated with the wire guide hole 102; the bit leg wiring hole 30 comprises a first wiring hole 300 and a second wiring hole 301, the axis of the first wiring hole 300 is overlapped with the axis of the cone 1 rotating relative to the bit leg 3, one end of the first wiring hole 300 is communicated with the wire guide hole 102, and the second wiring hole 301 is communicated with the other end of the first wiring hole 300; a main wiring through hole 20 is formed in the cone body 2 along the axial direction of the cone body, the main wiring through hole 20 is communicated with the cone leg wiring hole 30, so that wiring of the pressure sensor 5 is facilitated, and disorder or abrasion of a lead connected with the pressure sensor 5 when the cone body 2 rotates or the cone 1 rotates relative to the cone leg 3 is avoided;
in order to improve the detection accuracy, preferably, two pressure sensors 5 and two detection heads 4 are arranged on one cone 1, and the two detection heads 4 are distributed on the cone 1 at 180 °.
In the working process of the embodiment: the cone body 2 drives the cone leg 3 and the cone 1 to rotate, the cone 1 is contacted with a medium and rotates relative to the cone leg 3, the axis of the cone 1 rotating relative to the cone leg 3 is intersected with the axis of the cone body 2 rotating, so that the position of the detection head 4 is changed, the extrusion force of the medium on the detection head 4 is changed, and whether the cone 1 is blocked relative to the cone leg 3 is judged by detecting the pressure of the detection head 4; further, by detecting the pressure change period, workers can indirectly know the rotating speed of the cone 1 relative to the cone leg 3, further know the lubricating condition of each cone 1 and timely take corresponding measures on the cone 1 with low rotating speed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The utility model provides a take pressure detection's roller bit, its characterized in that includes cone (1), cone main body (2), bit leg (3), pressure measurement subassembly, wherein:
the cone (1) is rotatably arranged on the bit leg (3);
the pressure detection assembly comprises a detection head (4) and a pressure sensor (5), the detection head (4) is slidably mounted on the bit leg (3), the sliding displacement of the detection head (4) relative to the bit leg (3) along the cone (1) is vertical to the rotating axis of the cone (1) relative to the bit leg (3), the pressure sensor (5) is mounted on the cone (1) and connected with the detection head (4), and the pressure sensor (5) is used for detecting the extrusion pressure applied to the detection head (4);
the bit leg (3) is fixed on the cone body (2);
the cone (1), the pressure detection assembly and the tooth leg (3) are respectively provided with a plurality of cones, and the cone (1), the pressure detection assembly and the tooth leg (3) are in one-to-one correspondence;
the top of the detection head (4) is a spherical surface;
the pressure sensor (5) is fixed in the mounting hole (10) through a gland (8), and the gland (8) is fixed on the roller cone (1);
gland (8) are including clamp plate (80), fixed elastic component (81), fixed slide bar (82), extrusion block (83), compression leg (84) and apron (85), wherein:
the pressing plate (80) is slidably mounted in the mounting hole (10), a sliding fixing hole (800) is formed in the side wall of the pressing plate (80), a fixing sliding rod (82) is slidably mounted in the sliding fixing hole (800), a sliding groove (801) is formed in one end, far away from the pressure sensor (5), of the pressing plate (80), the sliding groove (801) is communicated with the sliding fixing hole (800), the extrusion block (83) is slidably mounted in the sliding groove (801), sliding displacement of the extrusion block (83) is perpendicular to sliding displacement of the pressing plate (80), the fixing elastic piece (81) is fixed between the extrusion block (83) and the pressing plate (80), the fixing elastic piece (81) can elastically deform along the sliding direction of the extrusion plate (80), a clamping hole (101) is formed in the inner wall of the mounting hole (10), and the fixing sliding rod (82) is matched with the clamping hole (101);
one end of the compression column (84) is clamped on the extrusion block (83), and the other end of the compression column (84) is fixed on the cover plate (85);
the cover plate (85) is fixed in the mounting hole (10) and seals the mounting hole (10).
2. Roller cone drill bit with pressure testing according to claim 1, characterized in that the part of the testing head (4) protruding relative to the roller cone (1) in the unstressed condition is below the height of the teeth on the roller cone (1).
3. The roller bit with the pressure detection function according to claim 1, wherein a mounting hole (10) is formed in the roller bit (1), the detection head (4) is slidably mounted in the mounting hole (10), the pressure sensor (5) is fixed in the mounting hole (10), the detection elastic part (6) is arranged between the pressure sensor (5) and the detection head (4), and the detection elastic part (6) can elastically deform along the sliding direction of the detection head (4).
4. The roller bit with the pressure detection function according to claim 1, wherein an elastic sliding part (7) is arranged on the outer side wall of the detection head (4), a sliding groove (100) is formed in the outer wall of the mounting hole (10), and the elastic sliding part (7) extends to the sliding groove (100) to limit the detection head (4) and can slide in the sliding groove (100).
5. The roller bit with the pressure detection function according to claim 1, wherein a wire guide hole (102) is formed in the roller cone (1), the wire guide hole (102) is communicated with the mounting hole (10), a leg wire connecting hole (30) is formed in the leg (3), and the leg wire connecting hole (30) is communicated with the wire guide hole (102).
6. The roller bit with pressure detection according to claim 5, wherein the bit leg wire connection hole (30) comprises a first wire connection hole (300) and a second wire connection hole (301), an axis of the first wire connection hole (300) coincides with an axis of rotation of the roller bit (1) relative to the bit leg (3), one end of the first wire connection hole (300) is communicated with the wire guide hole (102), and the second wire connection hole (301) is communicated with the other end of the first wire connection hole (300).
7. The roller cone bit with pressure detection function according to claim 5, wherein the roller cone body (2) is provided with a main wiring through hole (20) along the axial direction of the roller cone body, and the main wiring through hole (20) is communicated with the bit leg wiring hole (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110921667.5A CN113482539B (en) | 2021-08-11 | 2021-08-11 | Roller bit with pressure detection function |
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| CN202110921667.5A CN113482539B (en) | 2021-08-11 | 2021-08-11 | Roller bit with pressure detection function |
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| CN113482539B true CN113482539B (en) | 2022-10-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1095767B (en) * | 1959-06-27 | 1960-12-29 | Salzgitter Maschinen Ag | Roller bit for deep drilling purposes |
| CN207479310U (en) * | 2017-10-24 | 2018-06-12 | 惠州市百思德精密部件有限公司 | A kind of inclined plane punching die |
| CN108756755A (en) * | 2018-07-13 | 2018-11-06 | 扬州市普锐泰新材料有限公司 | A kind of self-induction type gear wheel Powerful drill |
| CN211448656U (en) * | 2019-12-20 | 2020-09-08 | 西安石油大学 | Logging-while-drilling system |
| CN211370299U (en) * | 2020-01-02 | 2020-08-28 | 冯文意 | High efficiency oil development drill bit |
| CN212508074U (en) * | 2020-06-30 | 2021-02-09 | 中国石油天然气集团有限公司 | Underground rotary guide drill bit device |
| CN213680584U (en) * | 2020-10-26 | 2021-07-13 | 博贤实业(广东)有限公司 | Feeding device is used in soap production |
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2021
- 2021-08-11 CN CN202110921667.5A patent/CN113482539B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111096147A (en) * | 2020-01-15 | 2020-05-05 | 雷海燕 | Cutter head adjusting device of sugarcane harvester |
| CN111255387A (en) * | 2020-03-04 | 2020-06-09 | 山东省地质科学研究院 | Self-locking anti-falling elevator |
| CN113103736A (en) * | 2021-03-09 | 2021-07-13 | 陈东红 | Pressure adjusting device of flexible printing machine |
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| CN113482539A (en) | 2021-10-08 |
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