CN220267597U - Pile foundation drill bit - Google Patents

Abstract

The utility model belongs to the technical field of foundation engineering, and particularly relates to a pile foundation drill bit, which comprises a connecting base, wherein the connecting base comprises a top plate, the bottom of the top plate is symmetrically provided with a first pin seat, an adjusting arm is rotationally connected to the first pin seat, grinding heads are fixedly connected to the outer side of the adjusting arm and distributed at equal intervals along the length direction of the adjusting arm, the bottom of the top plate is connected with a cylinder, the telescopic ends of the cylinder are fixedly connected with positioning heads, and the two ends of each positioning head are rotationally connected with a connecting arm. The adjustable arm is arranged on the upper surface of the pile foundation, and the width of the adjustable arm is adjustable according to the requirement, so that the adjustable arm can flexibly meet the pile foundation excavation requirements of different diameters, and the excavation efficiency is greatly improved; the width of the adjusting arm is changed by designing the air cylinder and the linkage arm, so that the excavating process is finer, and the excavating precision is improved; the saw teeth at the bottom of the digging plate and the grinding head at the outer side of the adjusting arm enable the digging of the side wall and the bottom of the pile foundation to be deeper and more comprehensive.

Description

Pile foundation drill bit

Technical Field

The utility model belongs to the technical field of foundation engineering, and particularly relates to a pile foundation drill bit.

Background

In foundation engineering construction, particularly deep foundation pit engineering, the construction of pile foundations is one of the key steps. Generally, in order to ensure stability and safety of a building, engineering constructors need to excavate deep underground by using a drill bit to form pile foundations. However, the diameter and depth of pile foundations may vary due to the actual requirements of the project. Accordingly, pile foundation bits capable of width adjustment according to actual needs become critical.

In the prior art, excavation is typically performed with a fixed width drill bit, which limits engineering flexibility and efficiency to some extent. In addition, existing bit designs also have certain limitations with respect to the excavation capabilities of the pile foundation bottom and sidewalls. For example, existing drill bits may not be able to efficiently excavate the bottom and side walls as the depth of excavation increases or the diameter of the pile foundation becomes larger.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model aims to provide a pile foundation drill bit which can be used for adjusting the width according to actual needs and has good excavating capacity on the bottom and the side wall of a pile foundation.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a pile foundation drill bit, includes connecting base, connecting base includes the roof, the bottom symmetry of roof is provided with first pinboard, rotate on the first pinboard and be connected with the adjusting arm, the outside fixedly connected with bistrique of adjusting arm, equidistant distribution of bistrique along the length direction of adjusting arm, the bottom of roof is connected with the cylinder, the telescopic link fixedly connected with location head of cylinder, the both ends of location head are all rotated and are connected with the link arm, the other end rotation of link arm is connected in the side of adjusting the arm.

Further, the bottom of roof fixedly connected with excavates the board, the bottom edge department of excavate the board has seted up the sawtooth.

Further, the top side of the adjusting arm is penetrated and provided with a first pin joint hole, both ends of the positioning head are provided with third pin joint seats, the side of the linkage arm is symmetrically penetrated and provided with a second pin joint hole, and the inner side of the adjusting arm is fixedly connected with a second pin joint seat.

Further, the bottom of roof fixedly connected with cylinder connecting piece, the stiff end of cylinder is connected in the cylinder connecting piece.

Further, the top of roof fixedly connected with screw thread post.

Compared with the prior art, the utility model has the beneficial effects that: the adjustable arm is arranged on the upper surface of the pile foundation, and the width of the adjustable arm is adjustable according to the requirement, so that the adjustable arm can flexibly meet the pile foundation excavation requirements of different diameters, and the excavation efficiency is greatly improved. Through design cylinder and linking arm, realize adjusting the width variation of arm for the excavation process is finer, has improved the excavation precision. The saw teeth at the bottom of the digging plate and the grinding head at the outer side of the adjusting arm enable the digging of the side wall and the bottom of the pile foundation to be deeper and more comprehensive. Through the specially designed pin joint part and the cylinder connecting piece, stability of each component in the excavating process is guaranteed, and durability of equipment is improved. The screw thread post makes pile foundation drill bit can be conveniently connected to the drilling rod, has saved installation time, has improved work efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a connecting base according to the present utility model;

FIG. 3 is a schematic view of the structure of the adjusting arm of the present utility model;

fig. 4 is a schematic structural view of the cylinder of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a connecting base; 11. a top plate; 12. a threaded column; 13. a first pin socket; 14. a cylinder connecting piece; 15. an excavating plate; 151. saw teeth; 2. an adjusting arm; 21. a first pin hole; 22. grinding head; 23. a second pin socket; 3. a cylinder; 31. a positioning head; 311. a third pin socket; 4. a linkage arm; 41. and a second pin hole.

Detailed Description

The present utility model will be specifically described with reference to examples below in order to make the objects and advantages of the present utility model more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the utility model and does not limit the scope of the utility model strictly as claimed.

Referring to fig. 1-4, a pile foundation drill bit includes a connection base 1, the connection base 1 having a top plate 11. In practical applications, the top plate 11 is used as a main component of the connection base 1, and is mainly used for connecting and supporting other components.

The bottom of roof 11 symmetry is provided with first pin joint seat 13, rotates on the first pin joint seat 13 and is connected with adjusting arm 2. By this arrangement, a fixed connection of the adjusting arm 2 to the top plate 11 can be achieved, while also allowing a corresponding rotation of the adjusting arm 2 when required.

In addition, the outside fixedly connected with bistrique 22 of adjustment arm 2, bistrique 22 is equidistant along the length direction of adjustment arm 2, and this design helps carrying out effective excavation to the lateral wall of pile foundation in the excavation process.

In order to realize the regulation of adjusting arm 2 width, the bottom of roof 11 is connected with cylinder 3, and the flexible end fixedly connected with locating head 31 of cylinder 3, the both ends of locating head 31 all rotate and are connected with link arm 4, and the other end of link arm 4 rotates and connects in the side of adjusting arm 2. The width of the adjusting arm 2 can be adjusted by stretching and retracting the air cylinder 3, so that pile foundations with different diameters are excavated.

Referring to fig. 2, in order to enhance the excavation ability of the pile foundation bottom, the bottom of the top plate 11 is fixedly connected with an excavation plate 15, and the bottom edge of the excavation plate 15 is provided with saw teeth 151, so that the saw teeth 151 can excavate the pile foundation bottom more deeply.

In order to further perfect the connection structure, the top side of the adjusting arm 2 is provided with a first pin hole 21 in a penetrating manner, both ends of the positioning head 31 are provided with third pin sockets 311, the side of the linkage arm 4 is provided with a second pin hole 41 in a symmetrically penetrating manner, and the inner side of the adjusting arm 2 is fixedly connected with a second pin socket 23. These pin-engaging members can ensure stability of the components during excavation.

Referring to fig. 2 to 4, in order to ensure stable connection of the cylinder 3, a cylinder connecting member 14 is fixedly connected to the bottom of the top plate 11, and the fixed end of the cylinder 3 is connected to the cylinder connecting member 14.

Referring to fig. 2, in order to connect the entire pile foundation bit to the drill pipe, a threaded post 12 is fixedly attached to the top of the top plate 11. In actual use, the excavation work can be started by simply connecting the threaded post 12 to the drill pipe.

The working principle of the utility model is as follows: in using such a pile driver bit, it is first necessary to attach the threaded post 12 to the drill pipe to install the pile driver bit in the proper working position. During the excavation, the width between the two adjusting arms 2 can be adjusted according to the size of the pile foundation. This width adjustment is achieved by controlling the expansion and contraction of the cylinder 3. The telescopic end of the air cylinder 3 is fixedly connected with a positioning head 31, and when the telescopic end of the air cylinder 3 is pushed downwards, the positioning head 31 is driven to move downwards. When the positioning head 31 moves downwards, the linkage arm 4 connected with the positioning head moves downwards. Since the other end of the linkage arm 4 is rotatably connected to the side of the adjustment arm 2, when the linkage arm 4 moves downward, the bottom of the adjustment arm 2 is guided to be opened outward, thereby realizing the adjustment of the width between the adjustment arms 2. During the excavation process, the bottom of the pile foundation is excavated by the excavation plate 15 provided at the bottom of the top plate 11 and the saw teeth 151 provided at the bottom of the excavation plate 15. Further, the grinding head 22 provided on the outer side of the adjustment arm 2 digs the sidewall of the pile foundation. Thus, through the pile foundation drill bit, the deep excavation of pile foundations with different diameters can be realized, and the excavation efficiency and the excavation effect are ideal.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (5)

1. Pile foundation drill bit, including connecting base (1), its characterized in that: the connecting base (1) comprises a top plate (11), first pin connection seats (13) are symmetrically arranged at the bottom of the top plate (11), adjusting arms (2) are rotationally connected to the first pin connection seats (13), grinding heads (22) are fixedly connected to the outer sides of the adjusting arms (2), the grinding heads (22) are distributed at equal intervals along the length direction of the adjusting arms (2), air cylinders (3) are connected to the bottom of the top plate (11), positioning heads (31) are fixedly connected to the telescopic ends of the air cylinders (3), linkage arms (4) are rotationally connected to the two ends of the positioning heads (31), and the other ends of the linkage arms (4) are rotationally connected to the side faces of the adjusting arms (2).

2. The pile foundation drill bit of claim 1, wherein: the bottom of roof (11) fixedly connected with excavates board (15), the bottom edge department of excavate board (15) has seted up sawtooth (151).

3. The pile foundation drill bit of claim 1, wherein: the top side of adjusting arm (2) runs through and has seted up first pin joint hole (21), the both ends of locating head (31) all are provided with third pin joint seat (311), second pin joint hole (41) have been run through to the side symmetry of linking arm (4), the inboard fixedly connected with second pin joint seat (23) of adjusting arm (2).

4. The pile foundation drill bit of claim 1, wherein: the bottom of the top plate (11) is fixedly connected with an air cylinder connecting piece (14), and the fixed end of the air cylinder (3) is connected in the air cylinder connecting piece (14).

5. The pile foundation drill bit of claim 1, wherein: the top of the top plate (11) is fixedly connected with a threaded column (12).