CN218407323U - Cylinder drill for rotary drilling rig - Google Patents
Cylinder drill for rotary drilling rig Download PDFInfo
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- CN218407323U CN218407323U CN202222793550.6U CN202222793550U CN218407323U CN 218407323 U CN218407323 U CN 218407323U CN 202222793550 U CN202222793550 U CN 202222793550U CN 218407323 U CN218407323 U CN 218407323U
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Abstract
The utility model discloses a cylindrical drill for a rotary drilling rig, which comprises a cylindrical drill body with a downward opening, wherein a cutting pick is arranged on the bottom ring surface of the cylindrical drill body, and a joint for butting a drill rod is arranged on the top plate of the cylindrical drill body; the area between every two adjacent picks of the bottom ring surface of the cylindrical drill body is provided with an arc-shaped notch for water flow to enter the inner cavity of the cylindrical drill body, and the side wall of the cylindrical drill body is also communicated with a drain hole for water flow to flow out of the inner cavity of the cylindrical drill body. The barrel drill can increase the water passing amount at the bottom of the barrel drill.
Description
Technical Field
The utility model relates to a pile foundation construction machinery technical field, specific dig a section of thick bamboo that rig was used soon and bore that says so.
Background
The rotary drilling rig has the advantages of high work efficiency, low noise, no pollution, wide applicable stratum and the like, and is more and more widely applied to pile foundation construction. In the construction process, the rotary drilling rig transmits torque and pressure to the barrel drill through the drill rod, and the barrel drill is used as a key part of the rotary drilling rig, so that the exertion of the energy efficiency of the drilling rig is directly determined.
The traditional rotary drilling rig comprises a cylindrical drill body with a downward opening, a plurality of cutting teeth are arranged on the bottom ring surface of the cylindrical drill body, and a joint for butting a drill rod is arranged on a top plate of the cylindrical drill body. The working process of the barrel drill is as follows: the drill rod drives the cylindrical drill body to drill downwards, the cutting teeth on the bottom annular surface of the cylindrical drill body and the hard weathered basal rock layer are continuously ground and crushed to form an annular groove, and the annular groove is continuously deepened along with the drilling of the drilling tool, so that a columnar core separated from a rock layer main body is formed in the cylindrical drill body; when the length of the columnar drill core is developed to a certain value, such as about 1 meter, the columnar drill core can be broken by the inclined plane of the inner wall of the barrel drill body, then the drill rod is lifted out of the drill hole, and the broken drill core in the barrel drill is thrown out.
When the barrel drill drills, a cutting tooth continuously grinds and crushes rock strata to generate a large amount of heat; the bottom of the cylindrical drill has less water passing amount and untimely heat dissipation, so that the cutting teeth are overheated and damaged; moreover, the slag discharge is not smooth due to less water passing at the bottom of the cylinder drill, and the drill slag is retained at the bottom of the hole to cause secondary crushing, waste energy consumption and increase the loss of cutting teeth; moreover, when a complex stratum with weathering bedrock sandwiched mud is encountered, the situation that the cutting teeth are stuck by mud can be caused due to the fact that the bottom water passing amount is small and the cross-sectional area of a water passing channel is small, so that the crushing energy efficiency of the cutting teeth is reduced, the heat dissipation situation of the cutting teeth is further worsened, and the abrasion of the cutting teeth is accelerated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a section of thick bamboo that can increase section of thick bamboo and bore the section of thick bamboo that digs rig soon of bottom water yield and use and bore.
The technical solution of the utility model is to provide a cylindrical drill for a rotary drilling rig, which comprises a cylindrical drill body with a downward opening, wherein the bottom ring surface of the cylindrical drill body is provided with cutting teeth, and the top plate of the cylindrical drill body is provided with a joint for butting a drill rod; an arc notch for water flow to enter the inner cavity of the cylindrical drill body is formed in the area between every two adjacent cutting teeth of the bottom ring surface of the cylindrical drill body, and a drain hole for water flow to flow out of the inner cavity of the cylindrical drill body is formed in the side wall of the cylindrical drill body in a penetrating mode.
Compared with the prior art, the cylindrical drill for the rotary drilling rig with the structure has the following advantages.
Firstly, because the bottom end of the cylinder drill body is provided with an arc-shaped notch and the side wall of the cylinder drill body is provided with a drain hole, a complete water circulation is constructed, namely, water flow enters the cylinder drill from the arc-shaped notch at the bottom end of the cylinder drill body and is drained from the drain hole; the water circulation increases the water passing amount at the bottom end of the cylindrical drill, naturally improves the heat dissipation condition of each cutting tooth at the bottom end of the cylindrical drill to the greatest extent, ensures that the heat ground by each cutting tooth is taken away by water flow in time, avoids the aggravation of abrasion of the cutting teeth caused by overheating, and ensures the service life of the cutting teeth; moreover, the increase of water flow naturally also leads to the improvement of slag carrying capacity, so that the drilling slag at the bottom end of the barrel drill can be discharged by the water flow in time, thereby avoiding repeated crushing caused by the bottom sinking of the drilling slag, reducing the ineffective abrasion of cutting teeth and saving energy consumption; and the water flow near the cutting tooth is increased, so that the erosion to mud is more violent, the mud is attached to a large difficulty, and the embarrassment that the cutting tooth is stuck by mud when the cutting tooth is drilled into a mud-sandwiched stratum is avoided.
Preferably, the drain holes of the cylinder drill body correspond to the arc notches one by one; therefore, the inlet and the outlet of each circulating water path are clear, the path is stable, and interference factors are few.
The circulating waterway is preferably that a bulge is formed in the area between every two arc-shaped notches at the bottom end of the side wall of the cylinder drill body, and each cutting tooth of the cylinder drill is fixed on the corresponding bulge; the inner wall of each convex part is provided with a streamline reinforcing rib extending upwards from a cutting pick; every two adjacent flow linear reinforcing ribs form a water passing channel; each water passing channel corresponds to one arc-shaped notch and one drain hole, the arc-shaped notch corresponding to the water passing channel forms an inlet of the water passing channel, and the drain hole corresponding to the water passing channel forms an outlet of the water passing channel; like this, the dual-purpose function of streamlined strengthening rib object has been realized, firstly, the intensity and the rigidity of the weak region of driling body bottom have been strengthened to pertinence promptly protruding bulge down, reduce the probability of this position wearing and tearing, prolong its life, moreover, the guiding gutter of intercommunication arc breach and wash port is found out to two adjacent streamlined strengthening ribs, continuously lead to rivers, ensure rivers and bore body inner chamber flow state more steadily orderly at the section of thick bamboo, avoid the turbulent flow, the guarantee velocity of flow, and then ensured the efficiency of heat dissipation and taking the sediment.
The arc-shaped notches are preferably selected, and the width center line of each arc-shaped notch is inclined along the axial direction of the cutting pick; two side surfaces of each arc-shaped notch incline to the direction of water flow passing through the arc-shaped notch; the inclination of the width center line of the arc-shaped notch can ensure that the channel area of the notch is large enough and the water passing amount is sufficient when the barrel drill drills in a rotating manner; the left side surface and the right side surface of the arc-shaped notch extend along the water flow direction passing through the arc-shaped notch instead of along the radial direction, and the two side surfaces form a streamline shape which is close to or even matched with the water flow direction when the barrel drill rotates, so that the resistance of the water flow passing through the arc-shaped notch is reduced, and the water passing speed is increased.
Drawings
Fig. 1 is a schematic structural view of the cylindrical drill for the rotary drilling rig of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 after being deflected by a certain angle.
Fig. 3 is a schematic view of the front view structure of the cylindrical drill of the rotary drilling rig of the present invention.
The figure shows that 1, a barrel drill body, 2, cutting picks, 3, a drill rod, 4, a connector, 5, an arc notch, 5.1, a side face, 6, a drain hole, 7, a flow linear reinforcing rib, 8, a water passing channel, 9, a reinforcing short rib, 10, an inclined spiral rib, a width central line, b and an axis.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1-3, the utility model discloses a rotary drilling rig uses a barrel drill, it includes that the opening is decurrent a barrel drill body 1, and a barrel drill body 1's bottom ring face is equipped with a plurality of picks 2 of round, and a barrel drill body 1's roof is equipped with the joint 4 that is used for butt joint drilling rod 3.
The area between every two adjacent picks 2 of the bottom ring surface of the cylindrical drill body 1 is provided with an arc-shaped notch 5 for water flow to enter the inner cavity of the cylindrical drill body 1, the area meets two conditions, is positioned on the bottom ring surface of the cylindrical drill body 1 and is positioned between every two adjacent picks 2. A water discharge hole 6 for water flow flowing out from the inner cavity of the cylinder drill body 1 is also penetrated through the side wall of the cylinder drill body 1. The number of the drain holes 6 is the same as that of the arc-shaped notches 5, and the drain holes correspond to the arc-shaped notches one by one.
The area between every two arc breach 5 of barrel drill body 1 lateral wall bottom forms a bulge, and this bulge both lies in barrel drill body 1 lateral wall bottom and lies in between every two arc breach 5 promptly. Each cutting pick 2 of the barrel drill is fixed to a corresponding projection. The inner wall of each convex part is provided with a streamline reinforcing rib 7 which extends upwards from the cutting pick 2; every two adjacent flow linear reinforcing ribs 7 form a water passage 8. Each water passage 8 corresponds to one arc-shaped notch 5 and one water drainage hole 6, the arc-shaped notch 5 corresponding to the water passage 8 forms an inlet of the water passage 8, and the water drainage hole 6 corresponding to the water passage 8 forms an outlet of the water passage 8.
The width centre line a of each arcuate aperture 5 is inclined in the direction of the axis b of the pick 2. Both side surfaces 5.1 of each arc-shaped recess 5 are inclined in the direction of the water flow through the arc-shaped recess 5. In other words, the cutting of the arc-shaped notch 5 in the lower part of the barrel drill body 1 is not performed in a direction perpendicular to the side wall of the barrel drill, but is performed at an angle such that the two side surfaces 5.1 of the arc-shaped notch 5 extend in the direction of the water flow through the arc-shaped notch 5.
A reinforcing short rib 9 is provided in a region obliquely below each water discharge hole 6 on the outer surface of the side wall of the drill body 1, and the reinforcing short rib 9 pushes water discharged from the water discharge hole 6 obliquely upward when the drill is drilled.
The upper portion of the outer surface of the side wall of the cylindrical drill body 1 is provided with inclined spiral ribs 10 which push water in the area to the inclined upper side when the cylindrical drill drills, the three inclined spiral ribs 10 form a group, and the plurality of groups of spiral ribs are distributed on the outer surface of the side wall of the cylindrical drill body 1 at intervals.
Claims (4)
1. A barrel drill for a rotary drilling rig comprises a barrel drill body with a downward opening, wherein a cutting pick is arranged on the bottom ring surface of the barrel drill body, and a joint for butting a drill rod is arranged on the top plate of the barrel drill body; the method is characterized in that: the area between every two adjacent picks of the bottom ring surface of the cylindrical drill body is provided with an arc-shaped notch for water flow to enter the inner cavity of the cylindrical drill body, and the side wall of the cylindrical drill body is also communicated with a drain hole for water flow to flow out of the inner cavity of the cylindrical drill body.
2. The barrel drill for the rotary drilling rig according to claim 1, characterized in that: the drain hole of the cylinder drill body corresponds to the arc-shaped notch one by one.
3. The barrel drill for the rotary drilling rig according to claim 1, characterized in that: a convex part is formed in the area between every two arc-shaped notches at the bottom end of the side wall of the cylindrical drill body, and each cutting tooth of the cylindrical drill is fixed on the corresponding convex part; the inner wall of each convex part is provided with a streamline reinforcing rib extending upwards from a cutting pick; every two adjacent flow linear reinforcing ribs form a water passing channel; each water passing channel corresponds to one arc-shaped notch and one water discharging hole, the arc-shaped notch corresponding to the water passing channel forms an inlet of the water passing channel, and the water discharging hole corresponding to the water passing channel forms an outlet of the water passing channel.
4. The barrel drill for the rotary drilling rig according to claim 1, characterized in that: the width center line of each arc-shaped notch is inclined along the axis direction of the cutting pick; two side surfaces of each arc-shaped notch incline to the direction of water flow passing through the arc-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222793550.6U CN218407323U (en) | 2022-10-22 | 2022-10-22 | Cylinder drill for rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222793550.6U CN218407323U (en) | 2022-10-22 | 2022-10-22 | Cylinder drill for rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218407323U true CN218407323U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222793550.6U Active CN218407323U (en) | 2022-10-22 | 2022-10-22 | Cylinder drill for rotary drilling rig |
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| Country | Link |
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| CN (1) | CN218407323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478786A (en) * | 2022-10-22 | 2022-12-16 | 浙江易通特种基础工程股份有限公司 | Cylinder drill for rotary drilling rig |
-
2022
- 2022-10-22 CN CN202222793550.6U patent/CN218407323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478786A (en) * | 2022-10-22 | 2022-12-16 | 浙江易通特种基础工程股份有限公司 | Cylinder drill for rotary drilling rig |
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