Telescopic anti-sloughing hole device for rotary digging of pile planting guide hole

Abstract

The utility model discloses a telescopic anti-sloughing hole device for a rotary digging pile planting guide hole, which comprises an outer pipe, the outer pipe is vertically arranged at the upper part in a pile hole, the lower end of the outer pipe is sequentially provided with at least one inner pipe, the inner pipe is arranged in the outer pipe in a sliding manner, and the outer pipe is connected with the inner pipe. A plurality of buckle assemblies are arranged at the upper end of the inner pipe in the circumferential direction; the outer pipe and the inner pipe are the same in structure and comprise hollow pipe barrels, sliding grooves corresponding to the buckle assemblies are formed in the side walls of the pipe barrels, and the buckle assemblies can move up and down in the sliding grooves; and the protective net is arranged on the upper side of the outer pipe. According to the utility model, the problem of poor hole collapse quality after hole guide operation is carried out in construction gaps before pile planting of the existing pile machine, especially in areas with complicated geological conditions such as poor soil texture of backfill soil and easy hole collapse can be solved.

Description

Technical Field

[0001] The utility model relates to the field of hole-collapse prevention devices, in particular to a telescopic hole-collapse prevention device used for rotary drilling and pile drilling. Background Art

[0002] With the increasing popularity and application of prestressed concrete pipe piles (PHC), most pile foundations in construction now use pipe pile construction. However, during pipe pile construction, uneven bedrock and hard interlayers can often lead to pile breakage. Therefore, a drilling method is often used to address this issue. However, due to extremely poor soil quality (such as soft soil or backfill containing some gravel, boulders, and boulders), coupled with technical gaps in the construction process (after the pile driver completes the drilling, the construction team often cannot promptly carry out subsequent construction processes such as feeding and driving the pipe pile), these two factors often lead to quality issues such as pile hole collapse. Traditional methods for preventing pile hole collapse use precast or cast concrete retaining walls, but this approach requires a large amount of concrete, has a high waste rate, and is both uneconomical and environmentally unfriendly. Therefore, it is necessary to develop a retractable, simple-structured, easy-to-operate, and highly adaptable anti-hole collapse device. Utility Model Content

[0003] The utility model provides a retractable anti-hole collapse device for rotary drilling and pile driving, which can solve the problem of hole collapse quality after the existing construction gap before the pile driver drives the pile, especially in areas with complex geological conditions such as poor backfill soil quality and prone to hole collapse.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a retractable anti-collapse hole device for rotary drilling and pile drilling, comprising an outer tube, the outer tube being vertically arranged at the upper part of the pile hole, the lower end of the outer tube being sequentially provided with at least one inner tube, the inner tube being slidably installed in the outer tube, and the upper end of the inner tube being provided with multiple groups of snap assemblies along the circumferential direction; the outer tube and the inner tube have the same structure, both comprising a hollow tube, the side wall of the tube being provided with a slide groove corresponding to the snap assembly, and the snap assembly can move up and down in the slide groove; a protective net being arranged on the upper side of the outer tube, reducing the risk of hole wall collapse by providing stable hole wall support, thereby ensuring the safety of construction workers.

[0005] Preferably, a protective wall is fixedly provided on the outer periphery of the outer tube, and the protective wall is erected on the ground in a circular shape. The support of the protective wall ensures the stability and reliability of the entire tool during the construction process.

[0006] Preferably, a plurality of hooks for fixing the protective net are provided along the circumferential direction on the upper inner side wall of the outer tube, so that the protective net is easy to assemble and disassemble.

[0007] Preferably, the snap assembly includes a fixing sleeve horizontally arranged in the tube, a plug is slidingly arranged on the side of the fixing sleeve, a spring is arranged in the fixing sleeve, both ends of the spring abut against the plug and the fixing sleeve, and adjacent tubes can be quickly disassembled and assembled through the snap assembly.

[0008] Preferably, the tube is provided with a through hole matching the plug, which is convenient for processing.

[0009] Preferably, the slide groove is in the shape of an elongated strip, and the plug passes through the through hole and slides up and down in the slide groove, resulting in a simple structure.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] With a simple structure and easy operation, it provides stable hole wall support, reduces the risk of hole wall collapse, and ensures the safety of construction workers. It also improves construction efficiency, thereby shortening the entire rotary pile driving construction period. The retractable design allows it to adapt to pile holes of varying diameters and a variety of complex geological conditions, increasing construction flexibility. The stable hole wall support helps improve the construction quality of the pile foundation and reduces pile foundation quality issues caused by hole wall collapse. It can solve the existing construction gap before the pile driver is driving, especially in areas with complex geological conditions such as poor backfill quality and prone to hole collapse, and the problem of hole quality collapse after the pilot hole operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the utility model when the protective net is not installed;

[0014] Figure 3 It is a top view of the utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the outer tube of the utility model;

[0016] Figure 5 This is a cross-sectional structural diagram of the buckle assembly of the present utility model;

[0017] Figure 6 It is a three-dimensional structural diagram of the tube of the present utility model.

[0018] Reference numerals:

[0019] 1. Outer tube, 2. Inner tube, 3. Wall guard, 4. Protective net, 5. Hook, 6. Buckle assembly, 11. Tube, 12. Slide, 13. Through hole, 61. Fixing sleeve, 62. Plug, 63. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] like Figures 1-6 As shown, the present invention aims to solve the problem of the existing construction gap before pile driving, especially the problem of the quality of the collapsed hole after the hole-guiding operation in areas with complex geological conditions such as poor backfill soil and easy hole collapse, and provides the following technical solutions: a retractable anti-collapse hole device for rotary excavation and pile-guiding, comprising an outer tube 1, the outer tube 1 being vertically arranged at the upper part of the pile hole, the lower end of the outer tube 1 being sequentially provided with at least one inner tube 2, the inner tube 2 being slidably installed in the outer tube 1, and the upper end of the inner tube 2 being provided with multiple groups of clip assemblies 6 along the circumferential direction; the outer tube 1 and the inner tube 2 having the same structure, both comprising a hollow tube 11, the side wall of the tube 11 being provided with a slide groove 12 corresponding to the clip assembly 6, the clip assembly 6 being movable up and down in the slide groove; a protective net 4 being arranged on the upper side of the outer tube 1, reducing the risk of hole wall collapse by providing stable hole wall support, thereby ensuring the safety of construction workers.

[0022] In this embodiment, if Figure 2 As shown, a protective wall 3 is fixedly provided on the outer periphery of the outer tube 1. The protective wall 3 is erected on the ground in a circular shape. The support of the protective wall 3 ensures the stability and reliability of the entire tool during the construction process.

[0023] In this embodiment, if Figure 2 As shown, a plurality of hooks 5 for fixing the protective net 4 are provided along the circumferential direction on the upper inner side wall of the outer tube 1, and the protective net 4 is easy to assemble and disassemble.

[0024] In this embodiment, if Figure 5 As shown, the snap assembly 6 includes a fixing sleeve 61 horizontally arranged in the tube 11, a plug 62 is slidingly provided on the side of the fixing sleeve 61, a spring 63 is provided in the fixing sleeve 61, and both ends of the spring 63 abut the plug 62 and the fixing sleeve 61. Adjacent tubes 11 can be quickly disassembled and assembled through the snap assembly 6.

[0025] In this embodiment, if Figure 6 As shown, the tube 11 is provided with a through hole 13 matching the plug 62, which is convenient for processing.

[0026] In this embodiment, if Figure 6 As shown, the slide groove 12 is in the shape of an elongated strip, and the plug 62 passes through the through hole 13 and slides up and down in the slide groove 12 , with a simple structure.

[0027] In this embodiment, if Figures 1-6As shown, multiple metal tubes 11 with different diameters are made, the diameter of the secondary tube 11 is smaller than that of the upper tube 11, and four slide grooves 12 are processed on the side wall of each tube 11; the protective wall 3 is welded on the upper side of the outer tube 1, and multiple hooks 5 are welded on the inner wall of the outer tube 1, and a snap assembly 6 is set on the upper part of the inner tube 2; when in use, several sections of inner tube 2 are selected according to the actual length required at the construction site, the plug 62 is installed, the inner tube 2 is inserted into the tube 11, the plug 62 enters the slide groove 12, the protective wall 3 is overlapped on the ground, and the tube 11 is unfolded downward in sequence under the action of its own weight, and finally the protective net 4 is installed on the hook 5; when piling, the device is taken back, the outer tube 1 and the inner tube 2 are disassembled, and can be reused.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A retractable anti-collapse device for rotary drilling pile drilling, characterized in that: include: An outer tube (1), the outer tube (1) being vertically arranged at the upper portion of the pile hole, the lower end of the outer tube (1) being sequentially provided with at least one inner tube (2), the inner tube (2) being slidably installed in the outer tube (1), and the upper end of the inner tube (2) being provided with a plurality of groups of snap-fit ​​assemblies (6) along the circumferential direction; The outer tube (1) and the inner tube (2) have the same structure, both comprising a hollow tube (11), a sliding groove (12) corresponding to the buckle assembly (6) being provided on the side wall of the tube (11), and the buckle assembly (6) can move up and down in the sliding groove; A protective net (4) is arranged on the upper side of the outer tube (1).

2. The retractable anti-hole collapse device for rotary drilling pile drilling according to claim 1 is characterized in that: A protective wall (3) is fixedly provided on the outer periphery of the outer tube (1), and the protective wall (3) is erected on the ground in a circular ring shape.

3. The retractable anti-hole collapse device for rotary drilling pile drilling according to claim 1 is characterized in that: A plurality of hooks (5) for fixing the protective net (4) are provided on the upper inner side wall of the outer tube (1) along the circumferential direction.

4. The retractable anti-hole collapse device for rotary drilling pile drilling according to claim 1 is characterized in that: The buckle assembly (6) comprises a fixing sleeve (61) horizontally arranged in the tube (11), a plug (62) is slidably arranged on the side of the fixing sleeve (61), a spring (63) is arranged in the fixing sleeve (61), and two ends of the spring (63) abut against the plug (62) and the fixing sleeve (61).

5. The retractable anti-hole collapse device for rotary drilling pile drilling according to claim 4 is characterized in that: The tube (11) is provided with a through hole (13) that matches the plug (62).

6. The retractable anti-hole collapse device for rotary drilling pile drilling according to claim 5, characterized in that: The slide groove (12) is in the shape of an elongated strip, and the plug (62) passes through the through hole (13) and slides up and down in the slide groove (12).

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