Rotary excavating cast-in-situ bored pile structure

Abstract

The utility model relates to the technical field of cast-in-place piles, in particular to a rotary drilling cast-in-place pile structure. According to the technical scheme, the rotary drilling device comprises a rotary drilling barrel, rotary drilling teeth for rotary drilling are formed in the bottom of the rotary drilling barrel, and a rotating rod is fixedly installed in the center of the top of the rotary drilling barrel; the reinforcing assembly comprises a bearing piece, a sliding block, a guide rod and a reinforcing piece, the bearing piece slides on a rod body of the rotating rod, the bottom of the sliding block is in sliding connection with the rotary excavating barrel, the guide rod is fixedly installed on the side portion of the sliding block, and the reinforcing piece is fixedly installed on the end portion of the guide rod; and the reinforcing piece is in contact with soil in a hole drilled by the rotary excavating teeth in a rotary excavating manner. Soil in a hole falls on the bearing plate, the bearing plate and the extrusion block move downwards, so that the sliding block moves to enable the reinforcing piece to be unfolded, when the rotary excavating barrel rotates, pulls up and retracts, the reinforcing piece exerts pressure on the soil in the hole and reinforces the soil in the hole, and it is avoided that the soil falls on the bottom of the hole, and forming of a cast-in-place pile is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place piles, in particular to a rotary bored cast-in-place pile structure. Background Art

[0002] A bored pile is a type of pile foundation that uses a rotary drill to create a hole and then pour concrete into it. Before constructing a bored pile, a detailed geological survey should be conducted to understand the geology and provide a basis for construction. Based on the geological survey report, the appropriate drill bit and drilling parameters should be selected to ensure the quality of the hole.

[0003] The rotary drilling rig utilizes a fully hydraulic drive, automatically adjusting drilling parameters during the drilling process to ensure verticality and hole diameter accuracy. The drill bit can be changed to suit different geological conditions, making it highly adaptable and capable of drilling holes in a variety of complex geological conditions.

[0004] However, if the geology of the construction site is relatively loose, such as sandy soil, silt, etc., the rotation and cutting action of the drill bit during the rotary drilling process may loosen the surrounding soil, making it easy for soil to fall and affect the formation of the cast-in-place piles. Utility Model Content

[0005] The utility model aims to solve the problem of loose soil and falling mud during the rotary drilling process in the background technology, and proposes a rotary drilling cast-in-place pile structure.

[0006] The technical solution of the utility model is: a rotary drilling cast-in-place pile structure, comprising a rotary drilling cylinder, a rotary drilling tooth for rotary drilling is provided at the bottom of the rotary drilling cylinder, and a rotating rod is fixedly installed at the center of the top of the rotary drilling cylinder;

[0007] The reinforcement assembly includes a supporting member, a slider, a guide rod and a reinforcement member. The supporting member slides on the rod body of the rotating rod. The bottom of the slider is slidably connected to the rotary drilling barrel. The guide rod is fixedly installed on the side of the slider, and the reinforcement member is fixedly installed on the end of the guide rod.

[0008] The reinforcement member contacts the soil in the hole drilled by the rotary drilling teeth.

[0009] Optionally, a receiving groove is provided on the outer arc surface of the rotary drilling barrel. Initially, the reinforcement is received in the receiving groove, and the reinforcement is rotatably connected to the receiving groove.

[0010] Optionally, the supporting member includes a supporting plate and an extrusion block, and a sliding hole is opened at the center of the supporting plate and the extrusion block. The supporting plate and the extrusion block are slidingly connected to the rotating rod through the sliding hole, and the bottom of the supporting plate is fixedly connected to the extrusion block.

[0011] Optionally, the top of the support plate is concave, the extrusion block adopts a truncated cone structure, and a return spring is elastically connected between the bottom of the extrusion block and the rotary drilling cylinder.

[0012] Optionally, the slider adopts a triangular block structure, and an embedded block is slidably connected to the inclined surface of the slider, and the end of the embedded block is fixedly connected to the extrusion block.

[0013] Optionally, the reinforcement includes a rotating shaft, a first elastic sheet and a second elastic sheet, both ends of the rotating shaft are rotatably connected to the rotary drilling barrel, and the first elastic sheet and the second elastic sheet are fixedly installed on the shaft body of the rotating shaft, and the first elastic sheet and the second elastic sheet both adopt an arc structure.

[0014] Optionally, the end of the guide rod contacts the first elastic sheet, an angle is formed between the first elastic sheet and the second elastic sheet, and the outer arc surface of the second elastic sheet contacts the soil in the hole drilled by the rotary drilling teeth.

[0015] Optionally, a torque spring is elastically connected between the end of the rotating shaft and the rotary drilling barrel, and the second elastic sheet is received in the receiving groove.

[0016] Compared with the prior art, this application has at least one of the following beneficial technical effects:

[0017] The utility model is that the soil in the hole falls onto the supporting plate, and the supporting plate and the extrusion block move downward, so that the slider moves to expand the reinforcement piece. When the rotary drilling drum rotates and pulls up for recovery, the reinforcement piece applies pressure to the soil in the hole, reinforcing the soil in the hole, preventing the soil from falling to the bottom of the hole and affecting the formation of the cast-in-place pile.

[0018] The first elastic sheet is further squeezed by the guide rod to extend the second elastic sheet. The second elastic sheet is elastic. After the soil is compacted, the second elastic sheet will move toward the direction of the first elastic sheet. The angle between the first elastic sheet and the second elastic sheet is used for buffering to prevent the second elastic sheet from squeezing the soil in the hole too much and scraping the soil off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is given;

[0020] Figure 2 A half-section schematic diagram of the rotary drilling barrel structure of an embodiment of the present invention is given;

[0021] Figure 3 for Figure 2 A magnified schematic diagram of the reinforcement structure of part A;

[0022] Figure 4 A schematic structural diagram of an embedded block according to an embodiment of the present invention is given.

[0023] Figure numerals: 1. rotary drilling cylinder; 2. rotary drilling teeth; 3. rotating rod; 4. reinforcement assembly; 41. supporting plate; 42. extrusion block; 43. slider; 44. guide rod; 45. reinforcement; 451. rotating shaft; 452. first elastic sheet; 453. second elastic sheet; 454. torque spring; 46. receiving groove; 47. embedded block; 48. return spring. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] This embodiment proposes a rotary bored pile structure, such as Figure 1As shown, it includes a rotary digging barrel 1, a rotary digging tooth 2 for digging a hole is provided at the bottom of the rotary digging barrel 1, and a rotating rod 3 is fixedly installed at the top center of the rotary digging barrel 1. The rotary rod 3 drives the rotary digging barrel 1 to rotate, so that the rotary digging tooth 2 digs a hole.

[0031] like Figure 2 and Figure 3 As shown, a reinforcement assembly 4 is provided on the top of the rotary drilling barrel 1. The reinforcement assembly 4 includes a supporting member, a slider 43, a guide rod 44, and a reinforcement member 45. The supporting member includes a supporting plate 41 and an extrusion block 42. Sliding holes are provided at the centers of the supporting plate 41 and the extrusion block 42. The supporting plate 41 and the extrusion block 42 are slidably connected to the rotating rod 3 through the sliding holes. The bottom of the supporting plate 41 is fixedly connected to the extrusion block 42. The soil that falls into the hole is received by the supporting plate 41 and the fallen soil is recovered to prevent the soil from falling to the bottom of the hole and affecting the formation of the cast-in-place pile.

[0032] The top of the support plate 41 is concave, and the extrusion block 42 adopts a truncated cone structure. A return spring 48 is elastically connected between the bottom of the extrusion block 42 and the rotary drilling barrel 1. The return spring 48 supports the support plate 41 and the extrusion block 42. As the amount of soil received by the support plate 41 increases, the support plate 41 moves downward and compresses the return spring 48.

[0033] The bottom of the slider 43 is slidably connected to the rotary drilling tube 1, and a guide rod 44 is fixedly installed on the side of the slider 43. The end of the guide rod 44 is fixedly installed with a reinforcement 45, which contacts the soil in the hole drilled by the rotary drilling tooth 2.

[0034] like Figure 4 As shown, the slider 43 adopts a triangular block structure. The inclined surface of the slider 43 is slidably connected to an embedded block 47. The end of the embedded block 47 is fixedly connected to the extrusion block 42. When the extrusion block 42 moves downward and the embedded block 47 squeezes the slider 43, the guide rod 44 pushes the reinforcement 45, causing the reinforcement 45 to expand outward. The reinforcement 45 applies pressure to the soil in the hole to reinforce the soil and prevent it from falling again.

[0035] In this embodiment, the soil in the hole falls onto the supporting plate 41, and the supporting plate 41 and the extrusion block 42 move downward, so that the slider 43 moves to expand the reinforcement 45. When the rotary drilling drum 1 rotates and pulls up for recovery, the reinforcement 45 applies pressure to the soil in the hole, reinforcing the soil in the hole to prevent the soil from falling to the bottom of the hole and affecting the formation of the cast-in-place pile.

[0036] Example 2

[0037] Based on Example 1, this embodiment proposes a rotary bored pile structure, such as Figure 3 and Figure 4As shown, the reinforcement 45 includes a rotating shaft 451, a first elastic piece 452 and a second elastic piece 453. Both ends of the rotating shaft 451 are rotatably connected to the rotary drilling barrel 1. The first elastic piece 452 and the second elastic piece 453 are fixedly installed on the rod body of the rotating shaft 451. The first elastic piece 452 and the second elastic piece 453 both adopt an arc structure.

[0038] The end of the guide rod 44 contacts the first elastic piece 452. There is an angle between the first elastic piece 452 and the second elastic piece 453. The outer arc surface of the second elastic piece 453 contacts the soil in the hole drilled by the rotary drilling tooth 2. The guide rod 44 squeezes the first elastic piece 452 to rotate the rotating shaft 451, and the second elastic piece 453 on the rotating shaft 451 deflects outward. The second elastic piece 453 is elastic. After the soil is compacted, the second elastic piece 453 moves toward the first elastic piece 452, using the angle between the first elastic piece 452 and the second elastic piece 453 to provide a buffer.

[0039] A torque spring 454 is elastically connected between the end of the rotating shaft 451 and the rotary barrel 1, and the second elastic piece 453 is received in the receiving groove 46. When the rotary barrel 1 is drilling, the second elastic piece 453 is received in the receiving groove 46 to prevent the rotary barrel 1 from being affected in drilling.

[0040] In this embodiment, the first elastic sheet 452 is squeezed by the guide rod 44 to extend the second elastic sheet 453. The second elastic sheet 453 is elastic. After the soil is compacted, the second elastic sheet 453 will move toward the direction of the first elastic sheet 452. The angle between the first elastic sheet 452 and the second elastic sheet 453 is used for buffering to prevent the second elastic sheet 453 from squeezing the soil in the hole too much and scraping the soil off.

[0041] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A rotary bored pile structure, characterized in that: include: A rotary drilling cylinder (1), wherein a rotary drilling tooth (2) for rotary drilling a hole is provided at the bottom of the rotary drilling cylinder (1), and a rotating rod (3) is fixedly mounted at the center of the top of the rotary drilling cylinder (1); The reinforcement assembly (4) comprises a supporting member, a slider (43), a guide rod (44) and a reinforcement member (45), wherein the supporting member slides on the shaft of the rotating rod (3), the bottom of the slider (43) is slidably connected to the rotary excavation barrel (1), the guide rod (44) is fixedly mounted on the side of the slider (43), and the reinforcement member (45) is fixedly mounted on the end of the guide rod (44); The reinforcing member (45) contacts the soil in the hole drilled by the rotary digging teeth (2).

2. The rotary bored pile structure according to claim 1, characterized in that: A receiving groove (46) is provided on the outer arc surface of the rotary drilling cylinder (1). Initially, the reinforcing member (45) is received in the receiving groove (46), and the reinforcing member (45) is rotatably connected to the receiving groove (46).

3. The rotary bored pile structure according to claim 1, characterized in that: The supporting member comprises a supporting plate (41) and an extrusion block (42). A sliding hole is provided at the center of the supporting plate (41) and the extrusion block (42). The supporting plate (41) and the extrusion block (42) are slidably connected to the rotating rod (3) through the sliding hole. The bottom of the supporting plate (41) is fixedly connected to the extrusion block (42).

4. The rotary bored pile structure according to claim 3, characterized in that: The top of the support plate (41) is concave, the extrusion block (42) adopts a truncated cone structure, and a return spring (48) is elastically connected between the bottom of the extrusion block (42) and the rotary drilling cylinder (1).

5. The rotary bored pile structure according to claim 3, characterized in that: The slider (43) adopts a triangular block structure, and an embedded block (47) is slidably connected at the inclined surface of the slider (43), and the end of the embedded block (47) is fixedly connected to the extrusion block (42).

6. The rotary bored pile structure according to claim 2, characterized in that: The reinforcing member (45) comprises a rotating shaft (451), a first elastic piece (452) and a second elastic piece (453); both ends of the rotating shaft (451) are rotatably connected to the rotary excavation barrel (1); the first elastic piece (452) and the second elastic piece (453) are fixedly mounted on the shaft of the rotating shaft (451); and the first elastic piece (452) and the second elastic piece (453) both have an arc-shaped structure.

7. The rotary bored pile structure according to claim 6, characterized in that: The end of the guide rod (44) contacts the first elastic piece (452), an angle exists between the first elastic piece (452) and the second elastic piece (453), and the outer arc surface of the second elastic piece (453) contacts the soil in the hole drilled by the rotary drilling tooth (2).

8. The rotary bored pile structure according to claim 7, characterized in that: A torque spring (454) is elastically connected between the end of the rotating shaft (451) and the rotary drilling barrel (1), and the second elastic piece (453) is received in the receiving groove (46).

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