CN109854178B - Roller bit for rotary drilling rig - Google Patents
Roller bit for rotary drilling rig Download PDFInfo
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- CN109854178B CN109854178B CN201910236472.XA CN201910236472A CN109854178B CN 109854178 B CN109854178 B CN 109854178B CN 201910236472 A CN201910236472 A CN 201910236472A CN 109854178 B CN109854178 B CN 109854178B
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- roller
- gyro wheel
- drilling rig
- bit
- rotary drilling
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Abstract
The invention discloses a roller bit for a rotary drilling rig, which relates to the technical field of engineering machinery and comprises the following components: the roller cutter body, the roller shaft, the roller and the roller teeth; the gyro wheel cutter body is used for with rotary bucket fixed connection, the shaft hole has been seted up on the gyro wheel cutter body, the roller shaft matches with the shaft hole and merges fixed connection in the shaft hole, the gyro wheel rotates with the roller shaft to be connected, the top surface of gyro wheel is the plane, all fixed being provided with the gyro wheel tooth on the top surface of gyro wheel and the side circumference, be used for shredding the rock, overcome current roller bit and adopted the toper structure, its outer diameter linear velocity is low and leads to digging the defect that efficiency is low soon, can improve roller bit side circumference on the linear velocity of gyro wheel tooth, and then improve roller bit's efficiency of digging soon, and the top surface of gyro wheel is the gear drill of toper structure for the plane compares, its structure.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a roller bit for a rotary drilling rig.
Background
The rotary drilling rig is a construction machine suitable for hole forming operation in building foundation engineering, and is widely applied to foundation construction of various foundations such as cast-in-place piles, continuous walls, foundation reinforcement and the like. The working principle of the rotary drilling rig is as follows: the rotary drilling rig makes soil scraps enter the drilling bucket by utilizing the rotation and gravity of the drill rod and the drill bit, after the drilling bucket is filled with the soil scraps, the drill bit is lifted to be unearthed, and holes are formed repeatedly through rotary drilling, soil cutting, lifting and unearthing of the drilling bucket. The excavating cutter of the existing rotary drilling rig is a roller bit (see figure 1), the existing roller bit is a cone with a small upper part and a large lower part, the outer diameter linear speed of the existing roller bit is low, the excavating efficiency is low, the structure is complex, the manufacturing method is complex, and the cost is high due to the fact that special tools and equipment are needed for machining.
Disclosure of Invention
The invention aims to provide a roller bit for a rotary drilling rig, which aims to solve the problems in the prior art, can improve the tunneling efficiency of the roller bit in rock strata with changed lithology, and is simple in structure and easy to manufacture.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a roller bit for a rotary drilling rig, which comprises a roller cutter body, a roller shaft, a roller and roller teeth, wherein the roller cutter body is provided with a cutter head; the roller cutter body is used for being fixedly connected with the rotating bucket, a shaft hole is formed in the roller cutter body, the roller shaft is matched with the shaft hole and is fixedly connected in the shaft hole, the roller is rotatably connected with the roller shaft, the top surface of the roller is a plane, and the roller teeth are fixedly arranged on the top surface and the side circumferential surface of the roller and used for cutting up rocks.
Preferably, the roller bit for the rotary drilling rig further comprises a roller, the roller is axially and fixedly arranged on the side wall of the roller shaft, and the roller shaft is rotatably connected with the roller through the roller.
Preferably, the roller bit for the rotary drilling rig further comprises steel balls, a plug pin and a plug, an annular groove and an axial channel are formed in the roller shaft, the axial channel is communicated with the annular groove, the steel balls are placed in the annular groove through the axial channel, two steel balls are placed in the axial channel after the annular groove is filled with the steel balls, the plug pin is detachably connected in the axial channel, one end of the plug pin abuts against the steel balls in the axial channel, the plug pin is detachably connected in the axial channel in the circumferential direction, the plug pin is used for abutting against the other end of the plug pin, the roller shaft is in rolling connection with the roller through the steel balls in the annular groove so as to reduce friction between the roller shaft and the roller,
preferably, the roller bit for the rotary drilling rig further comprises a sealing ring, the sealing ring is fixedly sleeved on the roller shaft and is located between the roller and the roller cutter body, so that the sealing performance of circumferential connection between the roller shaft and the roller is improved.
Preferably, the number of the rollers is plural.
Preferably, the number of the steel balls in the annular groove is 20.
Preferably, the roller teeth are alloy teeth.
Preferably, the number of the alloy teeth is multiple.
Preferably, the diameters of the alloy teeth on the top surface of the roller are smaller than the diameters of the alloy teeth on the circumferential surface of the roller side.
Preferably, the diameters of the alloy teeth on the top surface of the roller are different in size.
Compared with the prior art, the invention has the following technical effects:
the roller bit for the rotary drilling rig provided by the invention has the advantages that the roller teeth are fixedly arranged on the top surface and the side circumferential surface of the roller, and the top surface of the roller is arranged to be a cone-shaped roller bit with a plane smaller than the existing upper part and larger than the existing lower part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a side view of a roller bit configuration for a prior art rotary drill;
FIG. 2 is a front sectional view of a roller bit structure for a rotary drilling rig according to the present invention;
FIG. 3 is a top view of the roller bit structure for the rotary drilling rig provided by the invention.
Wherein: 1-roller cutter body, 2-plug, 3-roller shaft, 4-roller, 5-sealing ring, 6-roller, 7-plug pin, 8-steel ball, 9-roller side circumferential surface, 10-roller tooth and 11-roller top surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a roller bit for a rotary drilling rig, which aims to solve the problems in the prior art, can improve the tunneling efficiency of the roller bit in rock strata with lithological changes, and is simple in structure and easy to manufacture.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in FIGS. 2 to 3: the embodiment provides a roller bit for a rotary drilling rig, which comprises a roller cutter body 1, a roller shaft 3, a roller 4 and roller teeth 10; the roller cutter body 1 is used for being fixedly connected with a rotating bucket, a shaft hole is formed in the roller cutter body 1, a roller shaft 3 is matched with the shaft hole and fixedly connected into the shaft hole, a roller 4 is rotatably connected with the roller shaft 3, and the top surface of the roller 4 is a plane, so that the linear speed of roller teeth 10 on the circumferential surface of the side of the roller 4 can be improved compared with that of the existing conical roller, and the rotary digging efficiency of the roller 4 can be improved; and the top surface 11 of the roller is a plane, the structure is simple, compared with the roller with a conical structure, the roller is easy to manufacture and process, and the top surface and the side circumferential surface of the roller 4 are both fixedly provided with roller teeth 10 for cutting up rocks.
The roller bit for the rotary drilling rig further comprises a roller 6, the roller 6 is axially fixedly arranged on the side wall of the roller shaft 3, and the roller shaft 3 is rotatably connected with the roller 4 through the roller 6, so that friction between the roller 4 and the roller shaft 3 is reduced, and the bearing capacity of the roller shaft 3 can be improved.
The roller bit for the rotary drilling rig further comprises steel balls 8, a plug pin 7 and a plug 2, an annular groove and an axial channel are formed in the roller shaft 3, the axial channel is communicated with the annular groove, the steel balls 8 are placed in the annular groove through the axial channel, after the annular groove is filled with the steel balls 8, the two steel balls 8 are placed in the axial channel, the plug pin 7 is detachably connected in the axial channel, one end of the plug pin 7 abuts against the steel balls 8 in the axial channel, the plug pin 2 is detachably connected in the axial channel in the circumferential direction, the plug pin 2 is used for abutting against the other end of the plug pin 7, the roller shaft 3 is in rolling connection with the roller 4 through the steel balls 8 in the annular groove, friction between the roller 4 and the roller shaft 3 is favorably further reduced, and the bearing capacity of the roller shaft 3 can
The roller bit for the rotary drilling rig further comprises a sealing ring 5, the sealing ring 5 is fixedly sleeved on the roller shaft 3, and the sealing ring 5 is located between the roller 6 and the roller cutter body 1, so that the circumferential connection tightness between the roller shaft 3 and the roller 4 is improved, and the phenomenon that impurities enter a gap between the roller 4 and the roller shaft 3 in the rotary drilling process to increase friction between the roller shaft 3 and the roller 4 is avoided.
The number of the rollers 6 is plural.
The number of the steel balls 8 in the annular groove is 20.
The roller teeth 10 are alloy teeth.
The number of the alloy teeth is multiple, so that the rotary excavating efficiency is improved.
The diameter of the alloy tooth on the gyro wheel top surface 11 all is less than the diameter of the alloy tooth on the global 9 of gyro wheel side, utilizes the great alloy tooth of diameter to dig soon on the global 9 of gyro wheel side, utilizes the less alloy tooth of diameter to cut up the stone on the gyro wheel top surface 11 simultaneously, is favorable to accelerating the work efficiency of whole device.
The diameters of the alloy teeth on the roller top surface 11 are of different sizes and are used for chopping stones of different sizes.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a rotary drilling rig is with gyro wheel drill bit which characterized in that: comprises a roller cutter body, a roller shaft, a roller and roller teeth; the roller cutter body is used for being fixedly connected with the rotating bucket, a shaft hole is formed in the roller cutter body, the roller shaft is matched with the shaft hole and is fixedly connected into the shaft hole, the roller is rotatably connected with the roller shaft, the top surface of the roller is a plane, and the top surface and the side circumferential surface of the roller are both fixedly provided with roller teeth for cutting rocks; the diameters of the roller teeth on the top surface of the roller are smaller than the diameters of the roller teeth on the circumferential surface of the roller side.
2. The roller bit for the rotary drilling rig according to claim 1, characterized in that: the roller shaft is axially and fixedly arranged on the side wall of the roller shaft, and the roller shaft is rotationally connected with the roller through the roller.
3. The roller bit for the rotary drilling rig according to claim 1, characterized in that: still include steel ball, stopper round pin and end cap, ring channel and axial channel have been seted up on the gyro wheel axle, axial channel with communicate between the ring channel, the steel ball passes through axial channel place in the ring channel, fill in the ring channel behind the steel ball, again to place two steel balls in the axial channel, the stopper round pin can dismantle connect in the axial channel, just the one end of stopper round pin withstands in the axial channel the steel ball, end cap circumference can dismantle connect in the axial channel, just the end cap is used for withstanding the other end of stopper round pin, the gyro wheel axle passes through in the ring channel the steel ball with gyro wheel roll connection, in order to reduce the gyro wheel axle with friction between the gyro wheel.
4. The roller bit for the rotary drilling rig according to claim 1, characterized in that: the roller shaft is fixedly sleeved with the sealing ring, and the sealing ring is positioned between the roller and the roller cutter body so as to improve the sealing performance of circumferential connection between the roller shaft and the roller.
5. The roller bit for the rotary drilling rig according to claim 2, characterized in that: the number of the rollers is multiple.
6. The roller bit for the rotary drilling rig according to claim 3, wherein: the number of the steel balls in the annular groove is 20.
7. The roller bit for the rotary drilling rig according to claim 1, characterized in that: the roller teeth are alloy teeth.
8. The roller bit for the rotary drilling rig according to claim 7, wherein: the number of the alloy teeth is multiple.
9. The roller bit for the rotary drilling rig according to claim 7, wherein: the diameters of the alloy teeth on the top surface of the roller are different in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236472.XA CN109854178B (en) | 2019-03-27 | 2019-03-27 | Roller bit for rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236472.XA CN109854178B (en) | 2019-03-27 | 2019-03-27 | Roller bit for rotary drilling rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854178A CN109854178A (en) | 2019-06-07 |
| CN109854178B true CN109854178B (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236472.XA Active CN109854178B (en) | 2019-03-27 | 2019-03-27 | Roller bit for rotary drilling rig |
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| CN (1) | CN109854178B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322081A (en) * | 2020-03-30 | 2020-06-23 | 苏州思丹孚钻具有限公司 | Novel TBM shield hobbing cutter device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2514108Y (en) * | 2001-10-31 | 2002-10-02 | 江汉石油钻头股份有限公司 | Rolling bearing rock roller bit |
| CN1375614A (en) * | 2002-04-23 | 2002-10-23 | 江汉石油钻头股份有限公司 | Composite conic single gear drill bit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4516640A (en) * | 1983-12-08 | 1985-05-14 | Santrade Ltd. | Rotary drill bit |
| CN2356138Y (en) * | 1998-11-26 | 1999-12-29 | 江汉石油钻头股份有限公司 | Tri-cone rotary drill bit for hole enlarging |
| US20080245577A1 (en) * | 2007-04-05 | 2008-10-09 | Baker Hughes Incorporated | System, method, and apparatus for contoured thrust surfaces between thrust washer and head for roller cone drill bit |
| WO2015191028A1 (en) * | 2014-06-09 | 2015-12-17 | Halliburton Energy Services, Inc. | Hybrid bit with roller cones and discs |
-
2019
- 2019-03-27 CN CN201910236472.XA patent/CN109854178B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2514108Y (en) * | 2001-10-31 | 2002-10-02 | 江汉石油钻头股份有限公司 | Rolling bearing rock roller bit |
| CN1375614A (en) * | 2002-04-23 | 2002-10-23 | 江汉石油钻头股份有限公司 | Composite conic single gear drill bit |
Non-Patent Citations (1)
| Title |
|---|
| 三牙轮的结构与类型;未知;《百度文库》;20111013;第1-4页 * |
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| Publication number | Publication date |
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| CN109854178A (en) | 2019-06-07 |
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Denomination of invention: A roller bit for rotary drilling rig Effective date of registration: 20220628 Granted publication date: 20201222 Pledgee: China Everbright Bank Ji'nan branch Pledgor: SHANDONG EST ENGINEERING TOOLS COO., Ltd. Registration number: Y2022980009314 |