CN218376336U - Ultra-long auger drill bit suitable for beach area - Google Patents
Ultra-long auger drill bit suitable for beach area Download PDFInfo
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- CN218376336U CN218376336U CN202222060204.7U CN202222060204U CN218376336U CN 218376336 U CN218376336 U CN 218376336U CN 202222060204 U CN202222060204 U CN 202222060204U CN 218376336 U CN218376336 U CN 218376336U
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Abstract
The utility model discloses a overlength auger drill bit suitable for beach area aims at solving the unable power supply who is adapted to beach area complicated geological environment and overlength auger drill of current auger drill bit. The spiral cutter comprises a hollow pipe and a spiral cutter head arranged on the outer surface of the hollow pipe, wherein one end of the hollow pipe is provided with a flange plate, and the other end of the hollow pipe is hinged with a plugging door; the spiral cutter head is of a double-spiral structure and comprises a long spiral cutter head starting from the middle hollow tube blocking door end and the flange end, and a short spiral cutter head of which the starting end line is collinear with the starting end line of the long spiral cutter head; a limiting plate is vertically arranged on the plugging door, and a limiting groove corresponding to the limiting plate is formed in the hollow pipe; the vertical conical cutting pick is arranged at the bottom of the plugging door and is vertical to the horizontal conical cutting pick and distributed on the same plane. The drilling tool has the advantages of strong reliability, high drilling stability, small abrasion, convenient use and maintenance and the like.
Description
Technical Field
The utility model relates to a long auger drilling equipment technical field, concretely relates to overlength auger drilling machine drill bit suitable for beach area.
Background
The ecological protection and high-quality development of the yellow river basin are increasingly paid attention, and the permeable pile dam adopted in the treatment has obvious effect on controlling and guiding the yellow river water flow potential. The control and guide engineering can effectively play a role in flood control and disaster resistance on one hand, and the greening sightseeing engineering built on the basis of the permeable pile dam can facilitate the people on the coast to approach the yellow river on the other hand.
The permeable pile in the engineering needs a construction technology of pumping the super-fluid concrete by using a long auger drilling machine and then placing a reinforcement cage, the permeable pile is drilled to a preset depth by using a special long auger drilling machine, the super-fluid concrete is continuously pumped into a hole through a drill bit valve until the pile top, and then the permeable pile is inserted into the reinforcement cage to form a pile body.
However, in the construction process of a control and guide project of a certain yellow-crossing project, the geological condition of a yellow river beach area is complex, a silted fine sand layer with the thickness of 3-6m and a calcareous nucleation layer which are unevenly distributed exist under the ground of the beach area, the water level of the ground is high, and scattered flint stones exist locally during emergency rescue of a beach protection project. The geological conditions cause great challenges for the drilling of the drilling machine and provide extremely high requirements for the drilling head of the drilling machine.
Most of the existing drill bits are designed in a conical structure, but the inventor of the application finds that the technical scheme at least has the following technical problems in the process of implementing the actual project: aiming at the complex geological environment of the yellow river beach area, hard structures such as a nodule layer, scattered riprap and the like exist, the hole forming of the ultra-long spiral drilling machine is deeper, the designed elevation is 36m, and the contact area between the ultra-long spiral drilling machine and the soil body is larger due to the adoption of the conical drill bit, so that the requirement on larger torque driving is further caused, the abrasion is increased, and the requirements on the strength of a cutter head and the power of equipment are higher.
The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
In view of at least one of the above technical problems, the present disclosure provides a super-long auger drill bit suitable for beach areas, which aims to solve the problem that the conventional auger drill bit cannot adapt to the complex geological environment of beach areas and the power supply of super-long auger drills.
According to one aspect of the disclosure, an ultralong auger drill bit suitable for a beach area is provided, which comprises a hollow pipe and a spiral cutter head arranged on the outer surface of the hollow pipe, wherein one end of the hollow pipe is provided with a flange plate, and the other end of the hollow pipe is hinged with a plugging door;
the spiral cutter head is of a double-spiral structure and comprises a long spiral cutter head starting from the middle hollow tube blocking door end and the flange end, and a short spiral cutter head of which the starting end line is collinear with the starting end line of the long spiral cutter head;
a limiting plate is vertically arranged on the plugging door, and a limiting groove corresponding to the limiting plate is formed in the hollow pipe;
the vertical conical cutting pick is arranged at the bottom of the plugging door and is vertical to the horizontal conical cutting pick and distributed on the same plane.
In some embodiments of the present disclosure, the flange connection end face is provided with a limiting tongue-and-groove.
In some embodiments of the present disclosure, an annular rib is disposed between the flange and the hollow core tube.
In some embodiments of the present disclosure, the inner side of the plugging door is provided with a ring/circular protrusion, and the inner wall of the hollow core tube is provided with a groove corresponding to the ring/circular protrusion.
In some embodiments of the present disclosure, a projection included angle of the short spiral cutter head start and stop line on the end face of the hollow pipe is less than 180 degrees.
In some embodiments of the disclosure, the limiting plate is disposed at a corresponding position of the edge of the sealing door, and the limiting groove includes two steel plates disposed at corresponding positions of the outer sidewall of the hollow core tube and having a distance matching the thickness of the limiting plate.
In some embodiments of the present disclosure, the limiting plate is vertically disposed along a radial direction of the plugging door, and the limiting groove is opened at a corresponding position of the end portion of the hollow core tube.
In some embodiments of the disclosure, the conical picks are oriented in line with the direction of bit precession.
In some embodiments of the disclosure, a ribbed plate is disposed between the conical cutting pick and the helical cutter head/plugging door.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. because the conical cutting teeth are distributed on the plane, the problems of power driving and transmission of the ultra-long spiral drilling machine with the length exceeding the conventional length are effectively solved, and through reasonable distribution of the cutting teeth of the drill bit, the contact area between the cutting teeth of the drill bit and a soil body is reduced, so that the driving torque required by the drill bit is reduced, and the abrasion is reduced.
2. Aiming at the special geological environment of the beach area, the drill bit adopts vertical and horizontal conical cutting teeth which are distributed in a staggered manner, so that the influence of a binding layer and a loose throw stone in the construction stratum on drilling can be effectively solved, and the construction progress is ensured.
3. Because the drilling depth of the ultra-long spiral drilling machine is deeper than that of a common drilling machine, the drill bit is strictly fixed, the progress is prevented from being loosened, the reliability of connection between the drill bit and a drill rod is ensured through the tongue-and-groove structure of the hollow core pipe flange plate, and the firmness of the flange end is improved through the rib plates distributed annularly.
4. Due to the adoption of the double-spiral cutter head, the drilling construction efficiency can be obviously improved, the problem that drilling is influenced due to the fact that stones or other obstacles are clamped between the long and short spiral cutter heads in the geological environment of a beach area is solved by limiting the length of the short spiral cutter head, and on the other hand, the stress condition of the end part of a drill bit can be effectively balanced through the double-spiral cutter head with collinear starting end lines, and the perpendicularity of a drill stem of the drilling machine is guaranteed.
5. Because the conical cutting teeth are radially distributed along the spiral cutter head end line or the plugging door, and the rib plate is arranged between the conical cutting teeth and the spiral cutter head or the plugging door, the welding between the conical cutting teeth and the cutter head or the plugging door is greatly facilitated, the reliability of welding and fixing is ensured, the risks of tooth breakage and the like are reduced, and the distribution mode is convenient for maintenance and replacement after the cutting teeth are damaged while the drilling efficiency is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a drill bit of an ultra-long auger machine according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a drill plugging gate of an ultra-long auger drilling machine according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of another view of a drill bit of an ultra-long auger machine according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a drill plugging gate of an ultra-long auger drilling machine according to another embodiment of the present application.
Fig. 5 is a schematic structural view of a bit of an ultra-long auger machine according to another embodiment of the present application.
In the above figures, 1 is a hollow pipe, 2 is a flange, 20 is a rib plate, 3 is a long spiral cutter head, 4 is a short spiral cutter head, 5 is a plugging door, 50 is a hinged plate, 51 is a limiting plate, 6 is a conical cutting pick, and 60 is a rib plate.
Detailed Description
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application. References to "first," "second," etc. in this application are used to distinguish between the objects described and not to have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.
The components, structures, mechanisms and other devices in the following examples are all conventional commercially available products unless otherwise specified.
For better understanding of the technical solutions of the present application, the technical solutions will be described in detail below with reference to the drawings and specific embodiments.
The example discloses a drill bit of an overlong spiral drilling machine suitable for beach areas, and the drill bit comprises a hollow pipe and a spiral cutter head, and is shown in figure 1.
When the super-long spiral drilling machine is used for constructing the pressure grouting pile, the super-long spiral drilling machine is used for drilling to a preset depth, super-fluid concrete is continuously pumped into the hole through a drill bit valve, meanwhile, the drill bit is slowly lifted until the grouting reaches the pile top, and then a reinforcement cage is inserted into the pile body.
The hollow pipe is used for conveying concrete slurry into the pile hole. The hollow pipe is of a hollow structure, and on one hand, the hollow pipe is used as a drill rod to improve the rigidity of a drill body, and on the other hand, the hollow pipe is used as a grouting pipe. Because the drill bit needs to be connected to the drill rod for use, a flange plate is arranged at one end of the hollow pipe, and the drill bit is installed and fixed through flange connection. Considering that the use object of the drill bit is an ultra-long spiral drilling machine, which has extremely high reliability requirement, the tight connection of the drill bit needs to be ensured, the phenomena of insufficient drilling force or abrasion caused by loosening, delay to the construction period even hole collapse and the like during the drill lifting treatment are avoided, the mortise is arranged on the flange end head and is clamped with the tenon corresponding to the drill rod, and the connection stability of the mortise and the tenon is ensured. In addition, because the drill bit needs a larger torque when drilling, the connection between the flange end and the hollow pipe must be ensured, and therefore, the rib plates which are distributed annularly are arranged between the flange end and the hollow pipe to enhance the connection and fixation between the flange end and the hollow pipe.
In the drilling process of the drill bit, the middle hollow pipe is not filled with concrete grout, so that the problem that soil enters the middle hollow pipe when drilling needs to be avoided, the bottom end of the middle hollow pipe is sealed, on the other hand, when the drill bit is lifted for grouting, the grout needs to be discharged into a pile hole from the end, therefore, the end needs to be of an openable structure, and a plugging door is hinged to the bottom end of the hollow pipe. Referring to fig. 2, the plugging door is a round cap-shaped structure matched with the hollow pipe, a hinged plate is arranged on the edge of the plugging door, and a round through hole is formed in the position corresponding to the hinged plate; on the other hand, referring to fig. 3, two parallel steel plates with round corresponding round through holes are arranged at the corresponding positions of the hollow pipes, the steel plates and the hinged plates form a hinged part together, and bolts are arranged between the steel plates and the hinged plates in a penetrating mode, so that the opening and closing of the plugging door are realized, and the use requirements are met. In addition, a circular bulge is arranged in the center of the inner side face of the plugging door, a shoulder matched with the bulge is arranged on the inner wall of the port of the hollow core pipe, the circular bulge and the shoulder are matched with each other to seal the hollow core pipe, and therefore the situation that muck enters the pipe to influence a subsequent grouting process is avoided. In other embodiments, the inner side of the plugging door is centrally provided with a bulge with an annular structure, and the bulge is matched with the hollow core pipe to realize the sealing effect.
The spiral cutter head rotates to drive the soil body dug by the drill bit to the bottom of the hole, and the spiral cutter head mainly plays a role in conveying. In order to improve the drilling efficiency and balance the stress of the drill bit head during drilling, the spiral cutter head in the embodiment adopts a double-spiral structure, and comprises a long spiral cutter head starting from the end of the hollow core pipe plugging door and the end of the flange, and a short spiral cutter head with a starting end line collinear with the starting end line of the long spiral cutter head, wherein the projection included angle of the starting end line and the stopping end line of the short spiral cutter head on the end surface of the hollow core pipe is 90 degrees, so that the length of the short spiral cutter head is limited, the phenomenon that the distance between the short spiral cutter head and the long spiral cutter head is too narrow due to overlong short spiral cutter head is avoided, and the situation that scattered riprap stones left in the stratum of a beach area are blocked is prevented. In other embodiments, the projection included angle of the short spiral cutter head start and stop line on the end face of the hollow pipe is other angles smaller than 180 degrees.
In addition, still including locating the horizontal toper pick of helical cutter dish initiating terminal, locate the shutoff door bottom and perpendicular just with the vertical toper pick that the coplanar distributes of horizontal toper pick. The conical cutting pick is made of alloy materials, so that the conical cutting pick can effectively adapt to the complex geological environment of a beach area; the direction of the conical cutting pick is consistent with the screwing direction of the drill bit, and the soil body is extruded to the space between the spiral cutter heads and is gradually discharged out of the hole after being loosened by generating pressure on the soil body by the rotation of the drill bit. The vertical conical cutting teeth and the horizontal conical cutting teeth on the bottom surface of the plugging door are perpendicular to each other and distributed in a plane, so that the stress condition of the drill bit can be effectively balanced, the condition that drilling deflection is caused due to uneven stress and the verticality of the overlong spiral drill rod is further influenced is avoided, the stress and abrasion of the cutting teeth can be uniform, the maintenance risk is reduced, and the damaged cutting teeth can be replaced conveniently. And rib plates are arranged between each conical cutting tooth and the corresponding spiral cutter head or the corresponding plugging door, so that the reliability of the cutting tooth fixation is ensured, the reinforcing and supporting effects are achieved, and the orientation of the cutting tooth is conveniently adjusted under the condition that the cutting tooth is stressed.
Because the bottom of the plugging door is provided with the vertical conical cutting tooth, the plugging door hinged to the middle hollow tube can rotate when the cutting tooth is stressed in the drilling process, and then the hinged part of the plugging door and the middle hollow tube is damaged, so that the inner side surface of the plugging door is vertically provided with the limiting plate, and the positioning of the plugging door is realized. Referring to fig. 2, in this embodiment, the limiting plate is disposed along the radial direction of the sealing door and is in the same direction as the hinge plate, and the pipe wall of the end portion of the hollow pipe is provided with a limiting groove corresponding to the limiting plate, and when the sealing door is closed, the limiting plate is clamped into the limiting groove, so that the hinge portion is prevented from being damaged due to rotation of the sealing door. In other embodiments, referring to fig. 4-5, the limiting plate is disposed at a position corresponding to the edge of the sealing door, and the limiting groove comprises two steel plates disposed at corresponding positions corresponding to the outer sidewall of the hollow core tube and spaced from each other by a distance matching the thickness of the limiting plate. When drilling, the plugging door is automatically closed under the downward pressure of the drill bit, and when pore-forming grouting is performed, the plugging door can be automatically opened under the action of gravity by lifting the drill bit, so that a grouting passage is opened.
Although preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present application and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The ultra-long auger drill bit suitable for the beach area comprises a hollow tube and a spiral cutter head arranged on the outer surface of the hollow tube, and is characterized in that one end of the hollow tube is provided with a flange plate, and the other end of the hollow tube is hinged with a plugging door;
the spiral cutter head is of a double-spiral structure and comprises a long spiral cutter head starting from the middle hollow tube blocking door end and the flange end, and a short spiral cutter head of which the starting end line is collinear with the starting end line of the long spiral cutter head;
a limiting plate is vertically arranged on the plugging door, and the hollow pipe is provided with a limiting groove corresponding to the limiting plate;
the plugging door is characterized by further comprising a transverse conical cutting pick arranged at the starting end of the spiral cutter head and a vertical conical cutting pick arranged at the bottom of the plugging door and perpendicular to and in the same plane with the transverse conical cutting pick.
2. The drill bit of the ultra-long spiral drilling machine suitable for beach areas as claimed in claim 1, wherein the flange connecting end surface is provided with a mortise for limiting.
3. The drill bit of the ultra-long spiral drilling machine suitable for beach areas as claimed in claim 1, wherein ribs are annularly distributed between the flange plate and the hollow core pipe.
4. The ultra-long auger drill bit suitable for beach areas as claimed in claim 1 wherein the inner side of the plugging door is provided with a ring/circular protrusion and the inner wall of the hollow core tube is provided with a groove corresponding to the ring/circular protrusion.
5. The ultra-long auger drill bit suitable for beach of claim 1 wherein the included angle of projection of the short auger head start-stop line on the end face of the hollow core tube is less than 180 degrees.
6. The drill bit of the ultra-long spiral drilling machine suitable for the beach area as claimed in claim 1, wherein the limiting plate is disposed at a position corresponding to the edge of the blocking door, and the limiting groove comprises two steel plates which are oppositely disposed at corresponding positions on the outer side wall of the hollow core tube and have a distance matching the thickness of the limiting plate.
7. The drill bit of the ultra-long spiral drilling machine applicable to beach areas as claimed in claim 1, wherein the limiting plate is vertically arranged along the radial direction of the plugging door, and the limiting groove is opened at the corresponding position of the end part of the hollow core pipe.
8. The super long auger drill bit suitable for beach areas of claim 1 wherein the conical picks are oriented in the same direction as the bit's direction of precession.
9. The super long auger drill bit suitable for beach areas of claim 1 wherein ribs are provided between the conical cutting pick and the helical cutterhead/plugging door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222060204.7U CN218376336U (en) | 2022-08-06 | 2022-08-06 | Ultra-long auger drill bit suitable for beach area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222060204.7U CN218376336U (en) | 2022-08-06 | 2022-08-06 | Ultra-long auger drill bit suitable for beach area |
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| Publication Number | Publication Date |
|---|---|
| CN218376336U true CN218376336U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222060204.7U Active CN218376336U (en) | 2022-08-06 | 2022-08-06 | Ultra-long auger drill bit suitable for beach area |
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| Country | Link |
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| CN (1) | CN218376336U (en) |
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2022
- 2022-08-06 CN CN202222060204.7U patent/CN218376336U/en active Active
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