CN212614524U - A CFG stake machine drill bit for stereoplasm ground - Google Patents
A CFG stake machine drill bit for stereoplasm ground Download PDFInfo
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- CN212614524U CN212614524U CN202021096541.6U CN202021096541U CN212614524U CN 212614524 U CN212614524 U CN 212614524U CN 202021096541 U CN202021096541 U CN 202021096541U CN 212614524 U CN212614524 U CN 212614524U
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- transition arc
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Abstract
The utility model discloses a CFG stake machine drill bit for stereoplasm ground relates to pile probing technical field, in particular to. Comprises a base pipe, a flange, a rotating blade, a top plate, an inner cutting pick and an outer cutting pick. The top of base pipe is seal structure, and it is provided with the roof to weld on it, and the both sides of roof are fixed and are provided with interior pick, and fixed being provided with outer pick above the tip of rotating vane. The rear side of the rotary blade connected with the outer cutting teeth is also fixedly provided with a reinforcing arc. The top end of the rotating blade is fixedly provided with a transition arc plate, the transition arc plate is in a bent knife shape, one end of the transition arc plate is positioned below the top plate, and the other end of the transition arc plate is fixedly connected with the end part of the rotating blade. The reinforcing arc can strengthen the strength of the rotary blade and prevent the rotary blade from being damaged due to insufficient strength when the outer cutting pick impacts a hard stone or rock stratum. In addition, the top end of the rotating blade is fixedly provided with the transition arc plate, so that the impact force of rock soil on the end part of the rotating blade in the rotating process can be greatly relieved, and the service life of the rotating blade is prolonged.
Description
Technical Field
The utility model relates to a pile drilling technical field, in particular to a CFG stake machine drill bit for stereoplasm ground.
Background
The existing pile driver drill bit mainly comprises a base pipe and rotary blades arranged on the base pipe, and drilling teeth are arranged at the front ends of the rotary blades and on a drill bit door. Generally, the drilling teeth are bucket teeth, and are easy to damage when in use, particularly when drilling hard rock and soil layers, so that the drilling teeth cannot adapt to soil layers well and the drilling efficiency is low. To the above-mentioned problem, the utility model patent of (bulletin) being CN208168799U discloses a pile driver drill bit suitable for contain pebble bed geology, including the parent tube, the parent tube outside is provided with helical blade, and the both sides detachable that the parent tube working end is relative is provided with oblique ascending outer pick, and two outer pick orientations are opposite, and the parent tube working end still articulates there is the drill bit door that is used for shutoff parent tube inner chamber, and the drill bit door outer end face is provided with ascending roof, and the roof upper end is ascending triangle-shaped, roof upper end and outer pick upper end parallel and level, and drill bit door upper end still is provided with interior pick device, and the parent tube coaxial line is provided with the flange.
The drill bit door structure capable of being opened is adopted at the end part of the drill bit, the drill bit door is of a movable structure, the stress is limited, the drilling efficiency cannot be improved, and particularly when the drill bit is rotated into a soft rock stratum containing weathered limestone, the existing drill bit is easy to wear and deform; in addition, although a stronger cutting pick is used, when the cutting pick is fixedly installed on the rotary blade, the rotary blade is easy to deform when the drill encounters great resistance because the rotary blade is thin. In addition, the same angle of the drill teeth used for different formations may be effective differently.
Disclosure of Invention
In order to solve the above problem, the utility model discloses a following technical scheme realizes:
a CFG pile driver drill bit for a hard stratum comprises a base pipe, a flange, a rotating blade, a top plate, an inner cutting tooth and an outer cutting tooth;
the top of the base tube is a sealing structure, the top plate is welded on the base tube, and the inner cutting teeth are fixedly arranged on two sides of the top plate;
the outer cutting pick is fixedly arranged on the upper surface of the end part of the rotating blade;
a reinforcing arc is fixedly arranged on the rear side of the connection between the rotating blade and the outer cutting pick;
the top end of the rotating blade is fixedly provided with a transition arc plate;
the transition arc plate is in a bent knife shape, one end of the transition arc plate is positioned below the top plate, and the other end of the transition arc plate is fixedly connected with the end part of the rotating blade.
The rear side that rotating vane and outer pick are connected is provided with the enhancement arc, can strengthen rotating vane's intensity, prevents to lead to the damage inadequately because of rotating vane intensity when outer pick strikes hard stone or rock stratum. The top end of the rotating blade is fixedly provided with a transition arc plate, and the fact that the end part of the rotating blade directly impacts with a rock stratum and the working and service life of the rotating blade are influenced is mainly considered. After the transition arc plate is added, the impact force can be greatly relieved, and the service life of the transition arc plate is prolonged.
Preferably, the reinforcing arc is of a solid arc structure and is fixedly welded on the upper surface of the rotating blade, and one end of the reinforcing arc, the upper surface of the rotating blade and the tooth root of the outer cutting pick are mutually welded.
The reinforcing arc is of a solid arc structure, and the design can reduce the influence on the sliding and discharging of rock soil caused by the blocking of the rock soil in the rotating process.
Preferably, the number of the inner cutting teeth and the number of the outer cutting teeth are two, and the two cutting teeth are symmetrically arranged on two sides of the base pipe respectively by taking the base pipe as a circle center;
and the inner cutting pick and the outer cutting pick form an included angle of 30 degrees or 45 degrees with the vertical section of the central line direction of the base pipe.
Preferably, when strongly weathered limestone is drilled, the included angle is 30 degrees;
when drilling soft rock, the included angle is 45 degrees.
Through scientific calculation and long-time practical observation, the effect on the strongly weathered limestone is the best when the included angle is 30 degrees, the efficiency is the highest, and the effect on the soft rock is the best when the included angle is 45 degrees, and the efficiency is the highest.
Preferably, the lateral surface of the base pipe is provided with a grouting hole.
The slip casting hole has been seted up to the side of parent tube, just can directly follow the top grout, need not extract the drill bit and change the drill bit that has the drill bit door and grout, saves time and manpower and materials.
Preferably, the drill bit of the CFG pile driver for the hard stratum is fixedly connected with the drill body through the flange.
The utility model discloses a rear side that is connected at rotating vane and outer pick is provided with the enhancement arc, can strengthen rotating vane's intensity, prevents to lead to the damage inadequately because of rotating vane intensity when outer pick strikes hard stone or rock stratum. In addition, the top end of the rotating blade is fixedly provided with the transition arc plate, so that the impact force of rock soil on the end part of the rotating blade in the rotating process can be greatly relieved, and the service life of the rotating blade is prolonged. The utility model discloses simple structure, low cost, stability is good, and convenient operation has extensive popularization prospect.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the embodiment provided by the present invention;
FIG. 2 is a front view of an embodiment provided by the present invention;
fig. 3 is a left side view of an embodiment provided by the present invention;
fig. 4 is a top view of an embodiment provided by the present invention;
fig. 5 is a schematic view of another perspective of an embodiment provided by the present invention;
fig. 6 is a schematic structural diagram of another embodiment provided by the present invention;
figure 7 is a schematic view of the present invention mounted on a drill body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described clearly and completely with reference to fig. 1 to 7 of the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
As shown in FIGS. 1-5, a CFG pile driver drill bit 1 for a hard formation comprises a base pipe 10, a flange 11, a rotating blade 12, a top plate 13, an inner cutting tooth 14 and an outer cutting tooth 15, which are similar to the prior art. The difference lies in that: the utility model provides a CFG stake machine drill bit for stereoplasm ground does not set up the drill bit door at the tip of parent tube 10 to reduce because of rotating the problem that the in-process caused the atress uneven or the atress too big drill bit door of leading to warp, concrete structure is as shown in figure 1~5, and the top of parent tube 10 is seal structure, and the welding is provided with the roof 13 of triangle-shaped structure on it, and the both sides of roof 13 are fixed and are provided with interior pick 14.
The outer peripheral ring of the base pipe 10 is provided with rotating vanes 12, as in the prior art. An outer pick 15 is fixedly provided on the end of the rotary blade 12, and the outer pick 15 is located at the end of the rotary blade 12 adjacent to the top plate 13. The rear side of the rotary blade 12 connected with the outer cutting pick 15 is also fixedly provided with a reinforcing arc 17. The reinforcing arc 17 is a solid arc structure and is fixedly welded on the upper surface of the rotating blade 12, and one end of the reinforcing arc 17, the upper surface of the rotating blade 12 and the tooth root of the outer cutting pick 15 are mutually welded. The reinforcing arc 17 is of a solid arc structure, and the design can reduce the influence on the sliding and discharging of rock soil caused by the blocking of the rock soil in the rotating process. The top end of the rotating blade 12 is fixedly provided with a transition arc plate 16, the transition arc plate 16 is in a bent knife shape, one end of the transition arc plate is positioned below the top plate 13, and the other end of the transition arc plate is fixedly connected with the end part of the rotating blade 12.
Similar to the prior art, the inner cutting pick 14 and the outer cutting pick 15 are respectively provided with two cutting picks which are respectively and symmetrically arranged on two sides of the base pipe 10 by taking the base pipe as a circle center. The inner and outer picks 14, 15 are angled at 30 or 45 degrees from a perpendicular cross-section to the direction of the centerline of the base pipe 10. When strong weathering limestone is drilled, the included angle is set to be 30 degrees. When drilling soft rock, the included angle is set to be 45 degrees. Through scientific calculation and long-time practical observation, the effect on the strongly weathered limestone is the best when the included angle is 30 degrees, the efficiency is the highest, and the effect on the soft rock is the best when the included angle is 45 degrees, and the efficiency is the highest.
When in use, as shown in fig. 7, the drill bit 1 of the CFG pile driver for hard formation is fixedly connected with the drill body through the flange 11. And drilling can be carried out, when the preset drilling depth is reached, the drill bit 1 of the CFG pile machine for the hard stratum is taken out, the drill bit with the drill bit door in the prior art is replaced, and the original hole is drilled again for grouting.
The beneficial effect of design like this is: the rear side of the rotary blade 12 connected with the outer cutting pick 15 is provided with a reinforcing arc 17, so that the strength of the rotary blade 12 can be enhanced, and damage caused by insufficient strength of the rotary blade 12 when the outer cutting pick 15 impacts a hard stone or a rock stratum is prevented. The top end of the rotating blade 12 is fixedly provided with a transition arc plate 16, which mainly considers that the existing rotating blade 12 has no transition arc, so that the end part of the rotating blade 12 directly impacts with a rock stratum, and the work and the service life of the rotating blade are influenced. After the transition arc plate 16 is added, the impact force can be greatly relieved, and the service life of the transition arc plate is prolonged.
In another embodiment, to reduce the process of bit replacement, the base pipe 10 is perforated with grout holes 18 on the sides, as shown in FIG. 6. The slip casting hole 18 has been seted up to the side of parent tube 10, just can directly follow the top grout, need not extract the drill bit and change the drill bit that has the drill bit door and grout, saves time and manpower and materials.
The utility model discloses a rear side that is connected at rotating vane 12 and outer pick 15 is provided with strengthens arc 17, can strengthen rotating vane 12's intensity, prevents to lead to the damage inadequately because of rotating vane 12 intensity when outer pick 15 strikes hard stone or rock stratum. In addition, the top end of the rotating blade 12 is fixedly provided with the transition arc plate 16, so that the impact force of rock soil on the end part of the rotating blade in the rotating process can be greatly relieved, and the service life of the rotating blade is prolonged. The utility model discloses simple structure, low cost, stability is good, and convenient operation has extensive popularization prospect.
Claims (6)
1. The utility model provides a CFG stake machine drill bit (1) for hard formation, includes base tube (10), flange (11), rotating vane (12), roof (13), interior pick (14), outer pick (15), its characterized in that:
the top of the base pipe (10) is a sealing structure, the top plate (13) is welded on the base pipe, and the inner cutting teeth (14) are fixedly arranged on two sides of the top plate (13);
the outer cutting pick (15) is fixedly arranged on the upper surface of the end part of the rotating blade (12);
a reinforcing arc (17) is fixedly arranged on the rear side of the rotary blade (12) connected with the outer cutting pick (15);
the top end of the rotating blade (12) is fixedly provided with a transition arc plate (16);
the transition arc plate (16) is in a bent knife shape, one end of the transition arc plate is positioned below the top plate (13), and the other end of the transition arc plate is fixedly connected with the end part of the rotating blade (12).
2. A CFG pile driver drill bit (1) for hard ground formation according to claim 1, characterized in that:
the reinforcing arc (17) is of a solid arc-shaped structure and is fixedly welded to the upper surface of the rotating blade (12), and one end of the reinforcing arc (17), the upper surface of the rotating blade (12) and the tooth root of the outer cutting pick (15) are welded to each other.
3. A CFG pile driver drill bit (1) for hard ground formation according to claim 1, characterized in that:
the inner cutting pick (14) and the outer cutting pick (15) are respectively provided with two cutting picks, and are respectively symmetrically arranged at two sides of the base pipe (10) as a circle center;
the inner cutting pick (14) and the outer cutting pick (15) form 30-degree or 45-degree included angles with a vertical section of the center line direction of the base pipe (10).
4. A CFG pile driver drill (1) for hard ground formation according to claim 3, characterized in that:
when strongly weathered limestone is drilled, the included angle is 30 degrees;
when drilling soft rock, the included angle is 45 degrees.
5. A CFG pile driver drill (1) for hard ground according to any one of claims 1 to 4, characterized in that:
the side surface of the base pipe (10) is provided with a grouting hole (18).
6. A CFG pile driver drill bit (1) for hard ground formation according to claim 5, characterized in that:
the CFG pile driver drill bit (1) for the hard stratum is fixedly connected with the drill body through the flange (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021096541.6U CN212614524U (en) | 2020-06-15 | 2020-06-15 | A CFG stake machine drill bit for stereoplasm ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021096541.6U CN212614524U (en) | 2020-06-15 | 2020-06-15 | A CFG stake machine drill bit for stereoplasm ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212614524U true CN212614524U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021096541.6U Active CN212614524U (en) | 2020-06-15 | 2020-06-15 | A CFG stake machine drill bit for stereoplasm ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212614524U (en) |
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2020
- 2020-06-15 CN CN202021096541.6U patent/CN212614524U/en active Active
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