CN213116174U - Drill bit of rotary drilling rig - Google Patents
Drill bit of rotary drilling rig Download PDFInfo
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- CN213116174U CN213116174U CN202021793123.2U CN202021793123U CN213116174U CN 213116174 U CN213116174 U CN 213116174U CN 202021793123 U CN202021793123 U CN 202021793123U CN 213116174 U CN213116174 U CN 213116174U
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- drilling rig
- rotary drilling
- square head
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Abstract
The utility model discloses a drill bit of a rotary drilling rig, which comprises a connecting square head, a barrel body, a tooth breaking device, a gear wheel and a connecting pin, wherein the connecting square head is positioned at the top of the barrel body and is connected on the rotary drilling rig through the connecting pin; the cylinder body is a cylinder with openings at two ends, convex inclined ridges and air holes are arranged on the outer surface of the cylinder body, and the convex inclined ridges are arranged on the cylinder body at intervals; the roller cones are arranged on the wall of the bottom of the barrel at intervals. The tooth breaking device is arranged in the cylinder body, and is used for clamping the rock stratum in coring or reaming construction and breaking the rock stratum by generating radial component force, so that the construction efficiency of the hard rock stratum is improved, and the construction process of a pile foundation is accelerated; the convex inclined ridges are arranged to protect the outer wall of the cylinder body, reduce friction resistance and improve construction speed; strengthen the square head of connection, guarantee the structural strength of junction to strengthen the drilling thrust.
Description
Technical Field
The utility model relates to a pile foundation construction technical field, concretely relates to dig rig drill bit soon.
Background
The cast-in-place pile pore-forming mainly relates to four types, namely a sleeve pore-forming cast-in-place pile, a dry operation pore-forming cast-in-place pile, a slurry retaining wall pore-forming cast-in-place pile and an explosion-expansion pore-forming cast-in-place pile. The sleeve pipe pore-forming is suitable for soft soil foundation, not influenced by groundwater level. The dry operation pore-forming is suitable for the clay and sandy soil with better soil quality above the underground water level. The explosion-expanded hole is suitable for cohesive soil, loess and gravel soil above the underground water level, and although the cost is low and the bearing capacity is high, the inspection of the explosion-expanded pile is difficult. Mud dado pore-forming is including circling round rig pore-forming again, dive rig pore-forming, percussion drill pore-forming, three kinds of pore-forming modes all are applicable to soft, hard soil layer, nevertheless dig the rig soon and to the relatively poor rock stratum of geology, have that construction speed is fast, the efficiency of construction, the precision is high, small in noise, the high advantage of degree of mechanization, and single pile bearing capacity is higher under the same construction condition, and low to the power consumption requirement, practice thrift the cost, need not cooperate other mechanical pore-forming in the work progress, be applicable to various stratum constructions.
In the construction of the rotary drilling rig, the problem that the rock stratum is broken in the drill bit and is not easy to take out is easily met, and the problem that the broken rock stratum is taken out is solved by adding structures in a drill barrel of the drill bit at present, and CN 205977151U discloses a drill barrel core taking device for the rotary drilling rig, which is characterized in that a wedge plate penetrating through a bolt hole is fixed on the drill barrel, and a wedge plate body is reinforced by a fixing block, wherein the fixing block plays a role of fixing the wedge block, although the bolt is convenient to mount and dismount, the area of an arc-shaped steel plate contacting with the barrel body is large, so that materials are wasted, and the stress is not uniform due to different thicknesses of the steel plates in the drilling process; CN 203925289U discloses a dig drill bit soon suitable for drilling in slightly weathering stratum, should dig the drill bit soon and be fixed the grabbing in a section of thick bamboo rock with the wedge cutting knife in a section of thick bamboo after, to a section of thick bamboo rock body pressure torsion, twist off the core that gets into a section of thick bamboo with the laccolite is connected to make dig soon and bore and can creep into in the slightly weathering stratum, but the cutting knife structure is comparatively frivolous easy fracture and wearing and tearing, needs frequent maintenance. The utility model provides a dig rig drill bit soon and overcome above-mentioned defect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dig rig drill bit soon utilizes and breaks the tooth ware off with the fingers and thumb and breaks disconnected with the rock stratum off with the fingers and thumb, improves the efficiency of construction at hard rock stratum for the construction process.
The utility model provides a technical scheme that above-mentioned technical problem adopted is:
a drill bit of a rotary drilling rig comprises a connecting square head, a barrel, a tooth breaking device, a gear wheel and a connecting pin, wherein the connecting square head is positioned at the top of the barrel and is connected to the rotary drilling rig through the connecting pin;
the cylinder body is a cylinder with openings at two ends, convex inclined ridges and air holes are arranged on the outer surface of the cylinder body, and the convex inclined ridges are arranged on the cylinder body at intervals; the roller cones are arranged on the wall of the bottom of the barrel at intervals.
Further, connect the square head and include square head, connecting plate, reinforcing plate and reinforcement muscle, connecting plate fixed connection is at the barrel top, square head fixed connection is on the connecting plate, the reinforcing plate is connected between square head and connecting plate, reinforcement muscle fixed connection is at the barrel top, is located the connecting plate bottom surface.
Furthermore, the two sides of the connecting plate and the inner wall of the cylinder body are hollowed out.
Further, the tooth breaking device is fixedly connected in the height position of the cylinder body cavity 3/4.
Furthermore, the convex inclined ridges are arranged in two groups and correspondingly arranged on two sides of the outer surface of the cylinder body, the convex inclined ridges of each group are uniformly arranged at intervals from top to bottom, and the inclined directions of the convex inclined ridges are matched with the drilling direction.
Further, protruding stupefied to one side includes fillet and dogtooth, fillet fixed connection is at the barrel surface, the dogtooth interval is established on the fillet.
Preferably, the reinforcing plates are trapezoidal plates, and four reinforcing plates are arranged and respectively connected between the edges of the square heads and the upper surface of the connecting plate; the reinforcing rib is perpendicular to the connecting plate, the end part of the reinforcing rib is fixedly connected to the inner wall of the cylinder, and the upper surface of the reinforcing rib is fixedly connected with the bottom surface of the connecting plate.
The connecting pin comprises a pin shaft, a spring and a buckle, the pin shaft is arranged in a connecting pin hole on the connecting square head, the buckle is arranged at the outer end of the pin shaft, and the spring is sleeved on the pin shaft, is positioned between the side wall of the connecting square head and the buckle and is in a compression state.
Preferably, the number of the air holes is two, and the air holes are symmetrically arranged on two sides of the barrel body.
Preferably, the tooth severing device is a fixed block with teeth distributed on the surface, and the fixed block is made of hard alloy.
The utility model discloses beneficial effect as follows:
the tooth breaking device is arranged in the cylinder body, and is used for clamping the rock stratum in coring or reaming construction and breaking the rock stratum by generating radial component force, so that the construction efficiency of the hard rock stratum is improved, and the construction process of a pile foundation is accelerated; the convex inclined ridges are arranged to protect the outer wall of the cylinder body, reduce friction resistance and improve construction speed; the connecting square head is reinforced, the structural strength of the connecting part is ensured, and the drilling thrust is reinforced; the connection stability of connecting square head department is strengthened to the improvement connecting pin, guarantees the stability of drilling in-process state.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the internal cross-section of the present invention;
fig. 4 is a top view of the present invention;
FIG. 5 is a schematic view of the connection state of the connecting pin according to the present invention;
fig. 6 is a schematic view of the connecting pin structure of the present invention.
Reference numerals: 1-connecting square head, 11-square head, 12-connecting plate, 13-reinforcing plate, 14-reinforcing rib, 2-cylinder body, 21-convex inclined ridge, 22-air hole, 3-tooth breaking device, 4-cone, 5-connecting pin, 51-pin shaft, 52-spring and 53-buckle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
As shown in fig. 1 and 2, a drill bit of a rotary drilling rig comprises a connecting square head 1, a barrel 2, a tooth breaking device 3, a cone 4 and a connecting pin 5, wherein the connecting square head 1 is positioned at the top of the barrel 2 and is connected to the rotary drilling rig through the connecting pin 5, the tooth breaking device 3 is arranged in a cavity of the barrel 2, and the cone 4 is arranged at the bottom of the barrel 2;
the cylinder body 2 is a cylinder with openings at two ends, convex inclined ridges 21 and air holes 22 are arranged on the outer surface of the cylinder body, and the convex inclined ridges 21 are arranged on the cylinder body 2 at intervals; the cones 4 are arranged on the wall of the bottom of the barrel body 2 at intervals.
When the rotary drilling construction is adopted, coring and reaming are generally adopted, and the diameter of the cylinder body is provided with three specifications of 1.2m, 1.4m and 1.8m according to the construction condition, so that the rotary drilling construction method is used for different purposes.
As shown in fig. 4, further, the connecting square head 1 includes a square head 11, a connecting plate 12, a reinforcing plate 13 and a reinforcing rib 14, the connecting plate 12 is fixedly connected to the top of the barrel 2, the square head 11 is fixedly connected to the connecting plate 12, the reinforcing plate 13 is connected between the square head 11 and the connecting plate 12, and the reinforcing rib 14 is fixedly connected to the top of the barrel 2 and located on the bottom surface of the connecting plate 12.
And a reinforcing plate 13 and a reinforcing rib 14 are arranged to reinforce the connection of the square head 11 and reinforce the thrust in the drilling process.
As shown in fig. 2 and 4, further, the two sides of the connecting plate 12 are hollowed out from the inner wall of the cylinder 2. Through set up the fretwork at 2 tops of barrel, can be audio-visual the condition in the barrel of watching, make the upper strata rock mass of creeping into simultaneously contact with the external world, play the purpose of pressure release.
As shown in fig. 3, further, the tooth-severing device 3 is fixedly connected at the height of 3/4 in the cavity of the barrel 2. The height of 3/4 is set to ensure the core length meeting the requirement and avoid the frequent jamming during reaming.
As shown in fig. 1, further, the two groups of convex inclined ridges 21 are correspondingly arranged on two sides of the outer surface of the cylinder 2, each group of convex inclined ridges 21 are uniformly arranged at intervals from top to bottom, and the inclined direction of the convex inclined ridges is matched with the drilling direction.
Further, protruding stupefied 21 includes fillet and dogtooth, fillet fixed connection is in 2 surfaces of barrel, the dogtooth interval is established on the fillet.
Preferably, the convex inclined ridges 21 are arranged at an interval of 20cm from top to bottom. The convex inclined ridges 21 are arranged to be in close contact with the rock stratum wall, so that the cylinder body 1 is protected, and the friction resistance is reduced by the contact of the convex inclined ridges 21 and the rock stratum wall in the drilling process.
Preferably, the reinforcing plate 13 is a trapezoidal plate, and four reinforcing plates are arranged and respectively connected between the edge of the square head 11 and the upper surface of the connecting plate 12; the reinforcing rib 14 is perpendicular to the connecting plate 12, the end part of the reinforcing rib is fixedly connected to the inner wall of the cylinder 2, and the upper surface of the reinforcing rib is fixedly connected with the bottom surface of the connecting plate 12.
Set up reinforcing plate 13 for the joint strength of guaranteeing square head 11 and connecting plate 12, set up reinforcing rib 14 for the joint strength of guaranteeing connecting plate 12 and barrel 1, effective reinforced structure intensity avoids appearing the construction accident in the construction.
As shown in fig. 5 and 6, the connecting pin 5 includes a pin shaft 51, a spring 52 and a buckle 53, the pin shaft 51 is disposed in a connecting pin hole on the connecting square head 1, the buckle 53 is disposed at an outer end of the pin shaft 51, the spring 52 is sleeved on the pin shaft 51, is located between a side wall of the connecting square head 1 and the buckle 53, and is in a compressed state.
Preferably, the outer end of the pin shaft 51 is provided with fastening holes at intervals. The buckle 53 is placed in the buckle holes at different positions according to the connecting square heads 1 with different sizes, and is matched with the springs 52 with different lengths for use, so that the stable connection of the connecting square heads 1 is ensured.
The connecting pin 5 is used for connecting a drill rod of a drilling machine and a drill bit, and has the characteristics of stable connection and convenient disassembly. The spring 52 is additionally arranged on the connecting pin 5 and used for clamping the connecting square head 1, so that the movement generated in construction is avoided, the connection is stable, the application range is wide, and the disassembly is convenient.
Preferably, two air holes 22 are arranged and symmetrically arranged on two sides of the barrel body 2. Set up the bleeder vent on the barrel wall in order to prevent to bore a barrel and pressure too big at the drilling in-process, can effectively release the interior too big pressure of section of thick bamboo and be unlikely to produce the destruction deformation to the barrel, through setting up the air vent moreover, can audio-visually watch the condition in the barrel, the drainage effect that permeates water of pressure release is showing simultaneously.
Preferably, the tooth severing device 3 is a fixed block with teeth distributed on the surface, and is made of hard alloy. The whole surface of the tooth breaking device is fully distributed with convex teeth made of rugged hard alloy materials, so that the hardness and the strength are high, rock strata are effectively crushed, and the wear resistance is good; the rock stratum in the drill cylinder body is taken out through the tooth breaking device, so that the drilling efficiency is improved, the drilling efficiency is doubled compared with that without the tooth breaking device, and the problem of difficult coring is effectively solved.
The principle of the utility model is as follows: when the rock stratum is filled with the drill bit barrel in the drilling process, the rock stratum can abrade the upper part of the drill bit barrel when the drill rod continues to drill, and when the drill rod drills to a certain degree, the rock stratum is easily clamped on the upper part of the barrel, so that the rock stratum is easily broken to be clamped in the barrel or the coring length is insufficient, and finally the drill bit and the rock stratum are clamped to be incapable of continuing construction; when the rock stratum is stuck, the rock stratum in the drill barrel body is broken off and taken out by pressurizing the barrel body and then reversing the drill bit through the tooth breaking device and the rock stratum friction extrusion.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (10)
1. A drill bit of a rotary drilling rig is characterized by comprising a connecting square head (1), a barrel body (2), a tooth breaking device (3), a gear wheel (4) and a connecting pin (5), wherein the connecting square head (1) is positioned at the top of the barrel body (2) and is connected to the rotary drilling rig through the connecting pin (5), the tooth breaking device (3) is arranged in a cavity of the barrel body (2), and the gear wheel (4) is arranged at the bottom of the barrel body (2);
the barrel body (2) is a cylinder with openings at two ends, convex inclined ridges (21) and air holes (22) are arranged on the outer surface of the barrel body, and the convex inclined ridges (21) are arranged on the barrel body (2) at intervals; the roller cones (4) are arranged on the wall of the bottom of the barrel body (2) at intervals.
2. The drill bit of the rotary drilling rig according to claim 1, wherein: connect square head (1) including square head (11), connecting plate (12), reinforcing plate (13) and reinforcement muscle (14), connecting plate (12) fixed connection is at barrel (2) top, square head (11) fixed connection is on connecting plate (12), reinforcing plate (13) are connected between square head (11) and connecting plate (12), reinforcement muscle (14) fixed connection is at barrel (2) top, is located connecting plate (12) bottom surface.
3. The drill bit of the rotary drilling rig according to claim 2, wherein: the two sides of the connecting plate (12) and the inner wall of the barrel body (2) are hollowed out.
4. The drill bit of the rotary drilling rig according to claim 1, wherein: the tooth breaking device (3) is fixedly connected at the height of 3/4 in the cavity of the cylinder body (2).
5. The drill bit of the rotary drilling rig according to claim 1, wherein: the convex inclined ridges (21) are arranged in two groups and are correspondingly arranged on two sides of the outer surface of the cylinder body (2), each group of convex inclined ridges (21) are uniformly arranged at intervals from top to bottom, and the inclined direction of the convex inclined ridges is matched with the drilling direction.
6. The drill bit of the rotary drilling rig according to claim 5, wherein: protruding stupefied (21) including stupefied and dogtooth, stupefied fixed connection is in barrel (2) surface, the dogtooth interval is established on the stupefied.
7. The drill bit of the rotary drilling rig according to claim 2, wherein: the reinforcing plates (13) are trapezoidal plates, and are provided with four reinforcing plates which are respectively connected between the edge of the square head (11) and the upper surface of the connecting plate (12); the reinforcing ribs (14) are perpendicular to the connecting plate (12), the end parts of the reinforcing ribs are fixedly connected to the inner wall of the cylinder body (2), and the upper surface of the reinforcing ribs is fixedly connected with the bottom surface of the connecting plate (12).
8. The drill bit of the rotary drilling rig according to claim 1, wherein: the connecting pin (5) comprises a pin shaft (51), a spring (52) and a buckle (53), the pin shaft (51) is arranged in a connecting pin hole on the connecting square head (1), the buckle (53) is arranged at the outer end of the pin shaft (51), the spring (52) is sleeved on the pin shaft (51), is positioned between the side wall of the connecting square head (1) and the buckle (53), and is in a compression state.
9. The drill bit of the rotary drilling rig according to claim 1, wherein: the number of the air holes (22) is two, and the two air holes are symmetrically arranged on two sides of the barrel body (2).
10. The drill bit of the rotary drilling rig according to claim 1, wherein: the tooth breaking device (3) is a fixed block with teeth distributed on the surface and is made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793123.2U CN213116174U (en) | 2020-08-25 | 2020-08-25 | Drill bit of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793123.2U CN213116174U (en) | 2020-08-25 | 2020-08-25 | Drill bit of rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213116174U true CN213116174U (en) | 2021-05-04 |
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ID=75656039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021793123.2U Active CN213116174U (en) | 2020-08-25 | 2020-08-25 | Drill bit of rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213116174U (en) |
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2020
- 2020-08-25 CN CN202021793123.2U patent/CN213116174U/en active Active
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