CN215632785U - Pile forming drill bit for rotary digging square pile - Google Patents
Pile forming drill bit for rotary digging square pile Download PDFInfo
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- CN215632785U CN215632785U CN202121398073.2U CN202121398073U CN215632785U CN 215632785 U CN215632785 U CN 215632785U CN 202121398073 U CN202121398073 U CN 202121398073U CN 215632785 U CN215632785 U CN 215632785U
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Abstract
The utility model discloses a pile forming drill bit for rotary excavating square piles, which comprises a square head assembly, a guide body assembly, a drill bit main body and a wear-resistant blade; the square head assembly is welded in the middle of the upper end face of the drill bit main body, and the lower ends of the four side faces of the drill bit main body are fixedly connected with wear-resistant blades; the four side surfaces of the drill bit main body are respectively provided with a guide body assembly; the top ends of the guide body assemblies are respectively and movably hinged to the top ends of the side surfaces of the drill bit main body; the guide body assembly is of a curved-surface plate-shaped structure and is made of an elastic material; one end of the concave part of the guide body assembly faces the drill bit main body; the inner side wall of the guide body assembly is fixedly connected with the outer side surface of the drill bit main body through an elastic piece. According to the guide body assembly designed by the special shape structure, when the square drill bit of the rotary drilling rig is lifted upwards, the guide body assembly which is elastic and curved can fully protect the brick main body and prevent the brick main body from being clamped into the wall of the square pile hole.
Description
Technical Field
The utility model relates to the technical field of square pile forming drill bits of rotary drilling rigs, in particular to a pile forming drill bit for rotary drilling square piles.
Background
The rotary drilling rig is piling equipment for hole forming operation, and mainly utilizes a power head to drive a drill rod, and the driving force and the pressurizing force of the power head are transmitted to a drill bit through the drill rod to cut and drill a stratum. At present, drill bits of rotary drilling rigs in the market are all round, and are mainly used for construction of cylindrical pile holes, and when users of the rotary drilling rigs meet the engineering of square pile holes, the drill bits of the existing rotary drilling rigs are difficult to meet the use requirements.
Therefore, the patent with the application number of CN201320106803.6 in the prior art discloses a square drill bit of a rotary drilling rig, which effectively solves the problem that a user of the rotary drilling rig can directly adopt the rotary drilling rig to complete the wall repairing and forming work of a square pile hole of a shallow hole in a soil layer. Meanwhile, in the technical scheme, in order to prevent the square drill bit of the rotary drilling rig from being clamped into the hole wall of the square pile hole when being lifted upwards, the drill bit main body is effectively protected from being abraded, the service life of the square drill bit of the rotary drilling rig is prolonged, and the guide body assemblies are welded at the upper ends of the four side faces of the drill bit main body.
However, the guide body assemblies in the above technical means are connected in a welding and fixing manner, and are completely in rigid connection, so that when the square drill bit of the rotary drilling rig is lifted upwards, the guide body assemblies cannot be adjusted according to the hole wall of the square pile hole, and therefore, the guide body assemblies still can be clamped into the hole wall of the square pile hole; meanwhile, the protection force of the guide body assembly on the drill bit main body is insufficient in the technical means, and the drill bit main body still has the phenomenon of abrasion.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a pile forming drill bit for rotary drilling of a square pile, which can effectively avoid the phenomenon that the square drill bit of a rotary drilling rig is clamped into the wall of a square pile hole when being lifted upwards and fully protect a drill bit main body from being abraded.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a pile forming drill bit for rotary excavating square piles comprises a square head assembly, a guide body assembly, a drill bit main body and a wear-resistant blade; the square head assembly is welded in the middle of the upper end face of the drill bit main body, and the lower ends of the four side faces of the drill bit main body are fixedly connected with wear-resistant blades; the four side surfaces of the drill bit main body are respectively provided with a guide body assembly; the top ends of the guide body assemblies are respectively and movably hinged to the top ends of the side surfaces of the drill bit main body; the guide body assembly is of a curved-surface plate-shaped structure and is made of an elastic material; one end of the concave part of the guide body assembly faces the drill bit main body; the inner side wall of the guide body assembly is fixedly connected with the outer side surface of the drill bit main body through an elastic piece.
Further, the elastic member is a compression spring.
Further, the lower end surface of the guide body assembly extends downwards to the top end of the wear-resistant blade.
Further, the wear-resistant blade is connected with the lower end of the drill bit main body through a screw.
The utility model has the beneficial effects that:
(1) on one hand, the guide body assembly is connected with the top end of the side surface of the drill bit main body in a movable hinged mode, and the traditional rigid connection mode is changed; on the other hand, the guide body assembly adopts the design of a curved-surface plate-shaped structure and is made of an elastic material, so that the guide body assembly has certain elasticity; through the dual design, when the square drill bit of the rotary drilling rig is lifted upwards, the guide body assembly which has elasticity and is in a curved surface shape can fully protect the brick main body, and the brick main body is prevented from being clamped into the wall of the square pile hole.
(2) According to the utility model, the lower end surface of the guide body assembly extends downwards to the top end of the wear-resistant blade, and through the design, the guide body assembly can protect the drill bit main body more comprehensively.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1-square head assembly, 2-guide body assembly, 3-drill bit main body, 4-wear-resistant blade, 5-elastic piece and 6-screw.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, a rotary excavating square pile forming drill bit comprises a square head assembly 1, a guide body assembly 2, a drill bit main body 3 and a wear-resistant blade 4; the square head assembly 1 is welded at the midpoint of the upper end face of the drill bit main body 3, and the lower ends of the four side faces of the drill bit main body 3 are fixedly connected with wear-resistant blades 4; the four side surfaces of the drill bit main body 3 are respectively provided with a guide body assembly 2; the top ends of the guide body assemblies 2 are respectively and movably hinged to the top ends of the side surfaces of the drill bit main body 3; the guide body assembly 2 is of a curved plate-shaped structure and is made of an elastic material; one end of the concave part of the guide body assembly 2 faces the drill bit main body 3; the inner side wall of the guide body assembly 2 is fixedly connected with the outer side surface of the drill bit main body 3 through an elastic piece 5.
Further, the elastic member 2 is a compression spring.
Further, the lower end surface of the guide body assembly 2 extends downward to the top end of the wear-resistant blade 4.
Further, the wear-resistant insert 4 is connected to the lower end of the bit body 3 by a screw 6.
The working principle of the utility model is as follows:
when the rotary drilling rig is in operation, the self weight of the drill rod and the pressurizing force of the power head are transmitted to the wear-resistant blade 4 of the square drill bit of the rotary drilling rig, and the wear-resistant blade 4 cuts into a stratum with a middle part cut into a round hole, so that wall repairing and forming of the square pile hole are completed.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.
Claims (4)
1. A pile forming drill bit for rotary excavating square piles comprises a square head assembly (1), a guide body assembly (2), a drill bit main body (3) and wear-resistant blades (4); the square head assembly (1) is welded in the middle of the upper end face of the drill bit main body (3), and the lower ends of the four side faces of the drill bit main body (3) are fixedly connected with wear-resistant blades (4); the method is characterized in that: the four side surfaces of the drill bit main body (3) are respectively provided with a guide body assembly (2); the top ends of the guide body assemblies (2) are respectively and movably hinged to the top ends of the side surfaces of the drill bit main body (3); the guide body assembly (2) is of a curved-surface plate-shaped structure and is made of elastic materials; one end of the concave part of the guide body assembly (2) faces the drill bit main body (3); the inner side wall of the guide body assembly (2) is fixedly connected with the outer side surface of the drill bit main body (3) through an elastic piece (5).
2. The rotary square pile forming drill bit according to claim 1, characterized in that: the elastic piece (2) is a compression spring.
3. The rotary square pile forming drill bit according to claim 1, characterized in that: the lower end surface of the guide body assembly (2) extends downwards to the top end of the wear-resistant blade (4).
4. The rotary excavating square pile forming drill bit according to claim 3, characterized in that: the wear-resistant blade (4) is connected with the lower end of the drill bit main body (3) through a screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398073.2U CN215632785U (en) | 2021-06-24 | 2021-06-24 | Pile forming drill bit for rotary digging square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398073.2U CN215632785U (en) | 2021-06-24 | 2021-06-24 | Pile forming drill bit for rotary digging square pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215632785U true CN215632785U (en) | 2022-01-25 |
Family
ID=79944812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121398073.2U Active CN215632785U (en) | 2021-06-24 | 2021-06-24 | Pile forming drill bit for rotary digging square pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215632785U (en) |
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2021
- 2021-06-24 CN CN202121398073.2U patent/CN215632785U/en active Active
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