Bridge pile foundation punching equipment

Abstract

The utility model discloses bridge pile foundation punching equipment which comprises an outer cylinder, the top of the outer cylinder is rotatably connected with a top cover, the top of the top cover is provided with a connecting block, the top of the connecting block is detachably connected with a drill rod of a rotary drilling rig, the bottom of the top cover is fixedly connected with a connecting column, and the connecting column is fixedly connected with the outer cylinder. The bottom end of the connecting column is fixedly connected with a drilling disc, and the top of the outer side of the drilling disc is slidably connected with the bottom of the outer cylinder. The outer barrel and the drilling disc are positioned through the two elastic mechanisms, so that the relative positions of the drilling disc and the positioning disc are always kept coincident, during discharging, the outer barrel is completely taken out of the ground by the rotary drilling rig firstly, then a drill rod is contracted, the top end of the pushing mechanism is in contact with the outer side of the drill rod of the rotary drilling rig, and discharging is completed. And the soil in the outer cylinder is pushed out by extruding the pushing mechanism, so that the device has the advantages of high soil unloading efficiency, more thorough soil unloading and avoidance of adhesion.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation drilling, and specifically, to a bridge pile foundation drilling device. Background Art

[0002] A bridge pile is a columnar foundation structure that penetrates into soil layers or rock formations. Its main function is to transfer the load transmitted from the upper structure of the bridge to deeper, harder, and less compressible soil layers or rock formations to ensure the stability and safety of the bridge structure.

[0003] A deep foundation composed of piles and a pile cap (abbreviated as cap) connecting the pile tops or a single-pile foundation connecting columns and pile foundations is abbreviated as a pile foundation. If the entire pile body is buried in the soil and the bottom surface of the cap contacts the soil mass, it is called a low-cap pile foundation; if the upper part of the pile emerges above the ground and the bottom surface of the cap is above the ground, it is called a high-cap pile foundation. Before burying the pile foundation, holes need to be drilled on the ground to accommodate the pile foundation. In the prior art, when drilling, a rotary drilling rig is generally used for operation. The drill tool enters the soil layer, and the drill tool rotates. During the rotation of the drill tool, the soil is transported into the drill tool. When the drill tool is filled with soil, the rotary drilling rig lifts the drill tool to the ground and then unloads the soil.

[0004] However, after the current drill tool penetrates into the ground, the drilled soil will enter the internal space of the drill tool. After it is filled inside, the rotary excavator takes out the drill tool to discharge the soil inside and then continues the operation. Currently, the bottom of the drill tool is set as a fan shape, so that the soil inside can only be discharged through the two fan-shaped through holes on both sides, resulting in low soil discharge efficiency. At the same time, adhesion will occur on the inner wall, affecting the soil unloading efficiency. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a bridge pile foundation drilling device, which has the advantages of high soil unloading efficiency, more thorough soil unloading, and avoiding adhesion.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions;

[0007] A bridge pile foundation drilling device includes an outer cylinder. The top of the outer cylinder is rotatably connected to a top cover. A connecting block is installed on the top of the top cover. The top of the connecting block is detachably connected to the drill pipe of a rotary drilling rig. The bottom of the top cover is fixedly connected to a connecting column. The bottom end of the connecting column is fixedly connected to a drill floor. The top of the outer side of the drill floor is slidably connected to the bottom of the outer cylinder. Two elastic mechanisms are installed between the top of the drill floor and the outer cylinder. A positioning disk matching with the drill floor is fixedly connected inside the outer cylinder. Two stoppers fitting with the drill floor are fixedly connected to the positioning disk. A material pushing mechanism is movably installed on the top cover.

[0008] As a further description of the above technical solution: The material pushing mechanism includes two guide rods and a material pushing plate. The bottom ends of the two guide rods penetrate through the bottom of the top cover and are slidably connected thereto. The bottom ends of the two guide rods are fixedly connected to the material pushing plate, and the inner side of the material pushing plate is sleeved on the outer side of the connecting column.

[0009] As a further description of the above technical solution: The elastic force mechanism includes a sliding block and a spring. The top of the sliding block is slidably connected to the bottom of the outer cylinder, and the opposite ends of the two sliding blocks are respectively fixedly connected to the inside of the outer cylinder through two springs.

[0010] As a further description of the above technical solution: The outer side of the material pushing plate does not contact the inner wall of the outer cylinder, and the gap between the outer side of the material pushing plate and the outer cylinder is five millimeters.

[0011] As a further description of the above technical solution: The upward view section of the drilling base plate is two sector plates symmetrically distributed around the connecting column as the axis.

[0012] As a further description of the above technical solution: The upward view section of the positioning plate is two sector plates symmetrical about the connecting column, and the two stoppers are respectively located at the obliquely symmetrical sides of the two sector plates.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] In this solution, by retracting the drill rod, the top end of the material pushing mechanism contacts the outer side of the drill rod of the rotary drilling rig, so as to squeeze the material pushing mechanism to push out the soil inside the outer cylinder, thereby realizing the advantages that the device has high soil unloading efficiency, the soil unloading is more thorough, and adhesion is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view sectional structure schematic diagram of the present utility model;

[0016] Figure 2 is an upward view sectional structure schematic diagram of the present utility model;

[0017] Figure 3 is a partial three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 4 is a partial upward view sectional structure schematic diagram of the present utility model.

[0019] Description of the reference numerals in the drawings:

[0020] 1. Outer cylinder; 2. Top cover; 3. Connecting block; 4. Drill rod; 5. Connecting column; 6. Drilling base plate; 7. Elastic force mechanism; 71. Sliding block; 72. Spring; 8. Positioning plate; 9. Stopper; 10. Material pushing mechanism; 101. Guide rod; 102. Material pushing plate. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] Please refer to Figures 1-4 , a bridge pile foundation drilling device, including an outer cylinder 1, the top of the outer cylinder 1 is rotatably connected with a top cover 2, the top of the top cover 2 is provided with a connecting block 3, the top of the connecting block 3 is detachably connected with the drill rod 4 of a rotary drilling rig, the bottom of the top cover 2 is fixedly connected with a connecting column 5, the bottom end of the connecting column 5 is fixedly connected with a drill base plate 6, the top of the outer side of the drill base plate 6 is slidably connected with the bottom of the outer cylinder 1, and two elastic mechanisms 7 are installed between the top of the drill base plate 6 and the outer cylinder 1. A positioning plate 8 cooperating with the drill base plate 6 is fixedly connected inside the outer cylinder 1, and two stoppers 9 fitting the drill base plate 6 are fixedly connected to the positioning plate 8. A material pushing mechanism 10 is movably installed on the top cover 2.

[0023] In the present utility model, with the outer cylinder 1 as the main body of the device, the drill is connected and installed with the drill rod 4 of the rotary drilling rig by using the connecting block 3 on the top cover 2. The rotary drilling rig drives the drill rod 4 to rotate and extend, so as to operate the bottom connecting column 5 and the drill base plate 6 to perform ground drilling operations. During the operation, the drill base plate 6 rotates and contacts the stopper 9. At this time, the drill base plate 6 and the positioning plate 8 are vertically coincident, forming a fan-shaped inlet on both sides so that the drilled soil enters the inside of the positioning plate 8. The two elastic mechanisms 7 position between the outer cylinder 1 and the drill base plate 6, so that the relative positions of the drill base plate 6 and the positioning plate 8 always remain coincident. When discharging the soil, the rotary drilling rig first completely pulls the outer cylinder 1 out of the ground, and then retracts the drill rod 4 so that the top end of the material pushing mechanism 10 contacts the outside of the drill rod 4 of the rotary drilling rig, so as to squeeze the material pushing mechanism 10 to push out the soil inside the outer cylinder 1. Thus, the device has the advantages of high soil unloading efficiency, more thorough soil unloading, and avoiding adhesion, solving the problem in the prior art that the drilled soil will enter the internal space of the drill. After the inside is filled, the rotary excavator pulls out the drill to discharge the soil inside and then continues to operate. At present, the bottom of the drill is set as a fan shape, so that the soil inside can only be discharged through the two fan-shaped through holes on both sides, with low soil discharge efficiency and adhesion on the inner wall, affecting the soil unloading efficiency.

[0024] Please refer to Figure 1 And Figure 3 , wherein: the material pushing mechanism 10 includes two guide rods 101 and a material pushing plate 102. The bottom ends of the two guide rods 101 both penetrate to the bottom of the top cover 2 and are slidably connected thereto. The bottom ends of the two guide rods 101 are both fixedly connected to the material pushing plate 102, and the inner side of the material pushing plate 102 is sleeved on the outside of the connecting column 5.

[0025] In the present utility model, as the tops of the two guide rods 101 contact the outside of the drill pipe 4 during contraction, the guide rods 101 are squeezed, causing the material pushing disc 102 to move relative to the inside of the outer cylinder 1, so as to push the internal soil out and improve the soil discharging efficiency.

[0026] Please refer to Figure 4 , wherein: the elastic mechanism 7 includes a sliding block 71 and a spring 72. The top of the sliding block 71 is slidably connected to the bottom of the outer cylinder 1, and the opposite ends of the two sliding blocks 71 are respectively fixedly connected to the inside of the outer cylinder 1 through two springs 72.

[0027] In the present utility model, through the cooperation of the sliding block 71 and the spring 72, the outer cylinder 1 and the drill base plate 6 are positioned to keep the fan-shaped inlets on both sides, facilitating drilling and discharging, and at the same time making the drill bit structure more compact.

[0028] Please refer to Figure 1 , wherein: the outside of the material pushing disc 102 does not contact the inner wall of the outer cylinder 1, and the gap between the outside of the material pushing disc 102 and the outer cylinder 1 is five millimeters.

[0029] In the present utility model, since the outside of the material pushing disc 102 does not contact the inner wall of the outer cylinder 1 and the gap is five millimeters, it can not only ensure thorough material pushing and reduce adhesion, but also prevent contact between the two during rotation, reducing wear.

[0030] Please refer to Figure 2 and Figure 4 , wherein: the upward view section of the drill base plate 6 is two fan-shaped discs symmetrically distributed about the connecting column 5.

[0031] In the present utility model, since the upward view section of the drill base plate 6 is two fan-shaped discs symmetrically distributed about the connecting column 5, when rotating, the soil drilled by the two fan-shaped bits enters the inside of the outer cylinder 1 through the fan-shaped inlets on both sides, and the structure is more efficient.

[0032] Please refer to Figure 2 and Figure 4 , wherein: the upward view section of the positioning disc 8 is two fan-shaped discs symmetrical about the connecting column 5, and the two stoppers 9 are respectively located at the obliquely symmetric sides of the two fan-shaped discs.

[0033] In the present utility model, since the two stoppers 9 are respectively located at the obliquely symmetric sides of the two fan-shaped discs, when the drill base plate 6 rotates, the two stoppers 9 block it in the rotation direction of the drill base plate 6, making the structure more reasonable.

[0034] The above are only the preferred specific embodiments of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improved concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A bridge pile foundation drilling device, comprising an outer cylinder (1), characterized in that: The top of the outer cylinder (1) is rotatably connected to a top cover (2). A connecting block (3) is installed on the top of the top cover (2). The top of the connecting block (3) is detachably connected to the drill rod (4) of a rotary drilling rig. The bottom of the top cover (2) is fixedly connected to a connecting column (5). The bottom end of the connecting column (5) is fixedly connected to a drill base plate (6). The top of the outer side of the drill base plate (6) is slidably connected to the bottom of the outer cylinder (1). Two elastic mechanisms (7) are installed between the top of the drill base plate (6) and the outer cylinder (1). A positioning plate (8) that cooperates with the drill base plate (6) is fixedly connected to the inside of the outer cylinder (1). Two stoppers (9) that fit the drill base plate (6) are fixedly connected to the positioning plate (8). A feeding mechanism (10) is movably installed on the top cover (2).

2. The bridge pile foundation drilling device according to claim 1, characterized in that: The feeding mechanism (10) includes two guide rods (101) and a feeding plate (102). The bottom ends of the two guide rods (101) both penetrate to the bottom of the top cover (2) and are slidably connected to it. The bottom ends of the two guide rods (101) are both fixedly connected to the feeding plate (102). The inner side of the feeding plate (102) is sleeved on the outside of the connecting column (5).

3. The bridge pile foundation drilling device according to claim 1, wherein: The elastic mechanism (7) includes a sliding block (71) and a spring (72). The top of the sliding block (71) is slidably connected to the bottom of the outer cylinder (1). The opposite ends of the two sliding blocks (71) are respectively fixedly connected to the inside of the outer cylinder (1) through two springs (72).

4. The bridge pile foundation drilling device according to claim 2, characterized in that: The outer side of the feeding plate (102) does not contact the inner wall of the outer cylinder (1). The gap between the outer side of the feeding plate (102) and the outer cylinder (1) is five millimeters.

5. A bridge pile foundation drilling device according to claim 1, characterized in that: The upward view cross-section of the drill base plate (6) is two sector plates symmetrically distributed with the connecting column (5) as the axis.

6. The bridge pile foundation drilling device according to claim 1, characterized in that: The upward view cross-section of the positioning plate (8) is two sector plates symmetrical about the connecting column (5). The two stoppers (9) are respectively located at the obliquely symmetrical sides of the two sector plates.

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