CN216110553U - Arc-shaped roller gear installed in geological drill bit - Google Patents
Arc-shaped roller gear installed in geological drill bit Download PDFInfo
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- CN216110553U CN216110553U CN202120574908.9U CN202120574908U CN216110553U CN 216110553 U CN216110553 U CN 216110553U CN 202120574908 U CN202120574908 U CN 202120574908U CN 216110553 U CN216110553 U CN 216110553U
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- roller gear
- circular arc
- arc
- drill bit
- drilling
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- 238000005553 drilling Methods 0.000 claims abstract description 43
- 239000011435 rock Substances 0.000 claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides an install convex roller gear in geology drill bit, discloses a geology rotation type rig for the full section drill bit of core is not got to one kind among each engineering field, characterized by: the roller gear is in a convex or concave arc surface and is in contact with a rock stratum, and the roller gear is in a stressed state during the operation of the roller gear to form a rolling wedging extrusion impact type arc-shaped side rock breaking mode, so that the vertical drilling pressure is reduced, in addition, the arc length of the arc-shaped gear is far greater than the length of the linear wheel, the number of hard alloy teeth of a rock breaking body is increased, the crushing amount of rock is increased, the drilling speed is accelerated, the service life of the roller gear is prolonged, the drilling pressure is reduced, the arc-shaped roller gear rotates around the center of a drilling hole and is closer to the rotation track of a circle drawing type, so that the working state of the roller gear tends to be in a more reasonable state, and the problem of drilling a large-caliber and a full-section of a hard rock stratum by a geological rotary drilling machine is solved.
Description
Technical Field
The circular arc-shaped roller gear installed in the geological drill bit is mainly used for rotating a geological drilling machine to perform coring-free full-section drilling operation in various engineering fields, and creates conditions for expanding the functions of the geological rotating drilling machine, solving the problem that the geological rotating drilling machine is difficult to perform coring-free full-section drilling, accelerating the engineering progress and meeting the engineering requirements.
Background
The prior rotary non-coring bit (patent No. 200520050172.6) has the problems that the rock breaking body surface of a roller gear in the circular area of a drilling unit is in a straight line shape, when the roller gear rotates around the center of a drilling hole, the roller gear has high speed of an outer circle and low speed of the outer circle, and the diameters of two ends of the straight roller gear have small difference, so the rotary requirement that the outer speed and the inner speed cannot be reached is met, the rotary roller gear is not matched with each other when rotating, so the rock breaking function cannot be well achieved, hard alloy particles are linearly arranged, hard alloy particles with large and small heads are arranged reasonably, the hard alloy particles are crushed basically perpendicular to the circular loading plane of the drilling hole when working, so the drilling resistance is large, the arrangement quantity of the hard alloy particles is limited, the hard alloy particles is less than the circular arc roller gear of the utility model, and the central part has low rotary linear velocity, the larger hole has low rotary velocity, the linear velocity of the central part of the hole is slower, so that the hard alloy teeth at the central part cannot impact the rock breaking force can be formed, the drill bit has the advantages that an opposite blocking drilling effect is achieved, namely, the drill bit cannot be drilled, so that the non-coring full-section drill holes of large-caliber and hard rock layers cannot be drilled, only soft rock layers with small apertures can be drilled, and the drill bit cannot be drilled even with small apertures when the hard rock layers are met. In view of these drawbacks, the present application improves as follows.
Disclosure of Invention
The circular arc-shaped roller gear installed in the geological drill bit is technically characterized in that: the arc surface of the circular arc-shaped roller gear is of two shapes, namely an outer convex arc surface and an inner concave arc surface, the arc surface is used as a contact surface for crushing rocks during drilling, hard alloy particles are embedded in the arc surface and are used for crushing the rocks, a circular hole is drilled in the center of the circular arc-shaped roller gear, the circular hole is sleeved on a fixed shaft, the other end of the circular arc-shaped roller gear is welded in a drill hole of a geological drill bit steel body, the circular arc-shaped roller gear is arranged in a geological drill bit and automatically rotates around the center of the drill hole under the driving of rotary drilling pressure to drive the hard alloy particles on the arc surface to roll and wedge into an extrusion impact type rock crushing mode, the stress state during working belongs to side surface pressure (rolling type wedging extrusion impact force), the mode is different from vertical drilling pressure, the vertical drilling pressure resistance is large, the drilling resistance is reduced due to the compression of the arc-shaped side surface, the rock crushing strength of the hard alloy particles of the roller gear is increased, and in addition, the length of the circular arc line is larger than the length of the straight line, and hard alloy particles participating in rock stratum crushing are more than the straight line wheel, so that under the same drilling pressure condition and drilling condition, the impact force of the hard alloy particles is increased, the quantity of the hard alloy particles of the crushed rock is also increased, the rock crushing force is integrally increased, the hard rock stratum is crushed under strong rolling impact force, the problem that the hard rock stratum is difficult to drill in a non-coring full-section surface is solved, because the circular arc-shaped roller gear is a circumferential line which is gradually and uniformly reduced from outside to inside (the circle center part of a drill hole), the roller gear rotates around the center of the drill hole to be basically meshed, the hard alloy particles are arranged from most to least and tend to a more reasonable working state, the problem that the straight line roller gear rotates around the center of the drill hole and is not matched with the drill in a large caliber and hard rock stratum, the number of the arc-shaped hobbing gears arranged in the geological drill bit can be 2-3, 2 rounds of installation can be 1 round of one shaft, and can also be 2 rounds of one shaft, each round of one shaft is arranged when 3 rounds of installation are carried out, and the hobbing gears with the same arc-shaped surface are selected for the arc-shaped hobbing gears arranged in the same geological drill bit. The circular arc-shaped hobbing has the beneficial effects that: the stress state in drilling is changed, so that the vertical stress is changed into the stress broken rock body with the arc-shaped side surface rolled and wedged, and the arc-shaped roller gear is a circumferential line which is gradually and uniformly reduced from outside to inside, so that the roller gear rotates around the center of a drilling hole and is basically meshed, the arrangement of hard alloy particles tends to a reasonable working state from more to less, a new method is found for the non-coring full-section drilling of large-caliber and hard rock layers, another simple, easy, rapid, efficient and long-service-life non-coring full-section drill bit is found for a geological rotary drilling machine, and the functions of the rotary geological drilling machine are newly expanded.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 and 2 are schematic diagrams of the structural principle of the convex-concave arc-shaped hobbing gear, fig. 3 is a structural diagram of one-shaft installation of the 2-wheel, and fig. 4 is a schematic diagram of single-shaft single-wheel installation of the 3-wheel. Fig. 1, the structure diagram of the convex arc surface rolling gear, in the figure: (1) the rock crushing device comprises a circular arc-shaped hobbing gear steel body, (2) hard alloy particles distributed on an outer convex arc-shaped surface, (3) an inner hole for mounting a hobbing gear shaft, and (5) an outer convex arc-shaped surface, wherein the machined circular arc-shaped hobbing gear is sleeved on the hobbing gear shaft, and under the driving of rotary drilling pressure, the circular arc-shaped hobbing gear rolls around the center of a drilling hole and forms rolling wedging extrusion impact force to crush rocks. Fig. 2 is a structural diagram of a roller gear with an inner concave arc surface, wherein (4) is a shaft matched with an inner hole of the roller gear, and (6) is an inner concave arc surface, and the other surfaces are the same as outer convex arc surfaces. In fig. 3, (7) is a drill steel body, (8) is a processed convex circular arc-shaped roller gear, and (9) is a roller gear shaft. When the drilling operation is carried out, the arc-shaped gear hobbing is driven to rotate around the center of the drilling hole under the action of the rotating and pressing force of the drill bit, and the rolling wedging extrusion impact force is formed to carry out rock breaking drilling. Fig. 4 is a schematic view of single-wheel single-shaft installation of 3 circular arc-shaped roller gears installed in a geological drill bit, and the purpose of installing 3 wheels is to increase one third of broken rock mass on the basis of two wheels, so that the broken rock mass can play a better drilling role, deal with rock strata which are difficult to drill, accelerate the drilling speed and prolong the service life of the roller gears. In the figure, (10) is a machined concave circular arc-shaped roller gear, (7) is a drill steel body, and (9) is a roller gear shaft, and one end of the shaft is welded on the drill steel body.
Detailed Description
And (3) drilling a roller gear shaft hole on the geological drill bit steel body according to the graph of 3, placing the processed circular arc roller gear in the drill bit steel body, then penetrating the roller gear shaft into the steel body and the roller gear shaft hole, and welding two ends of the roller gear shaft on the geological drill bit steel body, namely, the non-coring full-section drill bit provided with the circular arc roller gear is changed. The drill bit has the beneficial effects that: the rotary drilling machine solves the problem that the rotary drilling machine cannot drill a large-caliber and hard rock layer without coring a full-section hole, has high drilling speed, can drill both soft rock layers and hard rock layers without coring a full-section drill bit, has long service life of the arc-shaped roller gear, reduces frequent drilling lifting operation, reduces the labor intensity of an operator, reduces the drilling pressure, reduces the maintenance of the drilling machine, meets the requirement of engineering construction, accelerates the progress of engineering and the like.
Claims (1)
1. The utility model provides an install convex roller gear in geology drill bit which characterized by: the shape of the circular arc-shaped rolling gear is two types, namely an outer convex circular arc surface and an inner concave circular arc surface, when the circular arc-shaped rolling gear is installed in a geological drill bit, the rolling gear in one shape is selected for assembly, hard alloy particles are embedded into the outer convex circular arc surface or the inner concave circular arc surface, the hard alloy particles installed on the circular arc surface are driven by rotary drilling pressure to be wedged into an extrusion impact type circular arc side surface to break rock under stress, a circular arc-shaped rolling gear shaft is installed in an inner hole of the circular arc-shaped rolling gear, the other end of the circular arc-shaped rolling gear shaft penetrates into a drill hole of a geological drill bit steel body and is welded, and the number of the circular arc-shaped rolling gears installed in the geological drill bit is 2 single shafts, 2 double shafts or 3 three shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120574908.9U CN216110553U (en) | 2021-03-14 | 2021-03-14 | Arc-shaped roller gear installed in geological drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120574908.9U CN216110553U (en) | 2021-03-14 | 2021-03-14 | Arc-shaped roller gear installed in geological drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216110553U true CN216110553U (en) | 2022-03-22 |
Family
ID=80686598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120574908.9U Expired - Fee Related CN216110553U (en) | 2021-03-14 | 2021-03-14 | Arc-shaped roller gear installed in geological drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216110553U (en) |
-
2021
- 2021-03-14 CN CN202120574908.9U patent/CN216110553U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220322 |