A foundation pit supporting structure of a rotary jetting pile with an inserted steel

Abstract

The utility model discloses a kind of foundation pit support structures of rotary jetting pile inner insertion section steel, including support frame and the lifting structure of being set to the inside of support frame;The lifting section of the lifting structure is connected with lifting seat, and is set to inner insertion section steel on lifting seat through swing structure, to facilitate inner insertion section steel to be taken out from foundation pit;The bottom of the support frame is uniformly provided with pin, and pin is inserted and set on ground, to realize the fixation of support frame in turn.The utility model can drive inner insertion section steel to swing left and right before pulling pile through swing structure, which effectively loosens the adhesion of section steel and surrounding soil, greatly reduces pulling resistance and difficulty, avoids equipment damage or section steel deformation fracture caused by strong pulling, ensures section steel safe, complete.

Description

Technical Field

[0001] This utility model relates to a foundation pit support structure, specifically a foundation pit support structure with steel inserts inside jet grouting piles. Background Technology

[0002] In traditional jet grouting pile internal steel-inserted foundation pit support construction, the steel is tightly bonded to the solidified jet grouting pile cement soil after insertion, resulting in extremely high frictional resistance.

[0003] Existing technologies (such as simply using cranes or lifting equipment) often require applying extremely high pulling force ("forced pulling") when removing steel sections, which can easily lead to deformation, breakage, or even jamming of the steel sections, making it difficult to remove them completely.

[0004] This directly leads to a high proportion of disposable steel sections, a large loss rate, and a low turnover rate, significantly increasing the cost of engineering materials and wasting resources. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a foundation pit support structure with steel inserts inside jet grouting piles, so as to solve the problems existing in the background art.

[0006] The foundation pit support structure of the jet grouting pile with inserted steel is achieved through the following technical solution, including a support frame and a lifting structure set inside the support frame. The lifting section of the lifting structure is connected to the lifting seat, and the lifting seat is provided with an inner steel section through a swing structure so that the inner steel section can be taken out from the pit. Pins are provided around the bottom of the support frame, and the pins are inserted into the ground to fix the support frame.

[0007] As a preferred technical solution, the support frame includes an upper baffle and a lower baffle; The upper baffle and the lower baffle are connected by a support column, and the lifting structure is set on the support column; the lifting structure includes a longitudinal linear moving guide rail set on the support column, and the movable section of the longitudinal linear moving guide rail is connected to the lifting seat, thereby realizing the insertion and removal of the inner steel section; the pin is set on the lower baffle, thereby realizing the fixation of the support frame.

[0008] As a preferred technical solution, the swing structure includes a bidirectional rotary motor and a threaded rod; The inner insert steel is placed inside the lifting seat, and a threaded hole corresponding to the threaded rod is provided at the center of the upper part of the inner insert steel. The threaded rod is mounted in the center of the lifting seat via a bearing, and the threaded rod is threadedly connected to the threaded hole of the inner insert steel.

[0009] As a preferred technical solution, the bidirectional rotary motor is mounted on one side of the lifting seat via a mounting base, and the output shaft of the bidirectional rotary motor passes through the lifting seat and is connected to the threaded rod. The rotation of the bidirectional rotary motor drives the threaded rod to rotate in both directions, thereby realizing the left and right swing of the inserted steel section.

[0010] As a preferred technical solution, guide rods are also provided on both sides of the lifting seat, and guide holes corresponding to the guide rods are provided on the inner steel profile. The inner steel profile is guided by the guide rods and guide holes.

[0011] As a preferred technical solution, a control panel is also included, which is connected to control the longitudinal linear guide rail and the bidirectional rotary motor for operation, and is powered by an external power source. The beneficial effects of this utility model are: This invention uses a lifting structure to drive the lifting seat to move up and down, enabling the entire insertion of the internal steel profile into the foundation pit and its complete extraction and recovery. This significantly improves the utilization rate of the steel profile and reduces material costs and resource waste.

[0012] This invention uses a swing structure to drive the inserted steel section to swing left and right before pile extraction. This effectively loosens the bond between the steel section and the surrounding soil, significantly reducing the resistance and difficulty of pile extraction, avoiding equipment damage or steel section deformation and breakage caused by forced extraction, and ensuring the safe and complete removal of the steel section. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the working structure of this utility model; Figure 3 This is a schematic diagram of the support frame structure of this utility model; Figure 4 This is a schematic diagram of the swing structure of this utility model.

[0015] Explanation of reference numerals in the attached figures 1. Support frame; 2. Lifting seat; 3. Upper baffle; 4. Lower baffle; 5. Support column; 6. Longitudinal linear guide rail; 7. Inner steel section; 8. Bidirectional rotary motor; 9. Threaded rod; 10. Threaded hole; 11. Guide rod; 12. Guide hole; 13. Pin; 14. Bearing; 15. Mounting base. Detailed Implementation

[0016] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0017] like Figures 1-2 As shown, the present invention provides a foundation pit support structure for jet grouting piles with internal steel profiles, including a support frame 1 and a lifting structure disposed inside the support frame 1. The lifting section of the lifting structure is connected to the lifting seat 2, and the inner steel 7 is mounted on the lifting seat 2 by a swing structure so that the inner steel 7 can be taken out from the pit. Pins 13 are provided around the bottom of the support frame 1, and the pins 13 are inserted into the ground to fix the support frame 1.

[0018] The support frame 1 includes an upper baffle 3 and a lower baffle 4; The upper baffle 3 and the lower baffle 4 are connected by a support column, and the lifting structure is set on the support column; the lifting structure includes a longitudinal linear moving guide rail set on the support column, and the movable section of the longitudinal linear moving guide rail is connected to the lifting seat 2, thereby realizing the insertion and removal of the inner steel 7; the pin 13 is set on the lower baffle 4, thereby realizing the fixation of the support frame 1.

[0019] The swing structure includes a bidirectional rotary motor 8 and a threaded rod 9. The inner insert steel 7 is placed inside the lifting seat 2, and a threaded hole 10 corresponding to the threaded rod 9 is provided in the center of the upper part of the inner insert steel 7. The threaded rod 9 is positioned in the center of the lifting seat 2 via a bearing 14, and the threaded rod 9 is threadedly connected to the threaded hole 10 of the inner insert steel 7.

[0020] The bidirectional rotary motor 8 is mounted on one side of the lifting seat 2 via the mounting base 15, and the output shaft of the bidirectional rotary motor 8 passes through the lifting seat 2 and is connected to the threaded rod 9. The rotation of the bidirectional rotary motor 8 drives the threaded rod 9 to rotate in both directions, thereby realizing the left and right swing of the inner insert steel 7.

[0021] In order to provide auxiliary guidance, in this embodiment, guide rods 11 are provided on both sides of the lifting seat 2, and guide holes 12 corresponding to the guide rods 11 are provided on the inner steel 7. The inner steel 7 is guided by the guide rods 11 and the guide holes 12.

[0022] For ease of control, this embodiment also includes a control panel, which is connected to control the longitudinal linear guide rail 6 and the bidirectional rotary motor 8 to operate, and is powered by an external power source.

[0023] This invention utilizes a lifting structure to drive the lifting seat up and down, enabling the complete insertion and extraction of the internally inserted steel section into the foundation pit. This significantly improves the utilization rate of the steel section and reduces material costs and resource waste. The swinging structure allows the internally inserted steel section to swing left and right before pile extraction, effectively loosening the bond between the steel section and the surrounding soil. This greatly reduces the resistance and difficulty of pile extraction, avoiding equipment damage or steel deformation and breakage caused by forceful extraction, and ensuring the safe and complete removal of the steel section. The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A foundation pit support structure with steel sections inserted into jet grouting piles, characterized in that, Includes a support frame (1) and a lifting structure disposed inside the support frame (1); The lifting section of the lifting structure is connected to the lifting seat (2), and the lifting seat (2) is provided with an inner steel section (7) by a swing structure so that the inner steel section (7) can be taken out from the pit. The support frame (1) is provided with pins (13) around its bottom, and the pins (13) are inserted into the ground to fix the support frame (1).

2. The foundation pit support structure with internally inserted steel sections in the jet grouting pile according to claim 1, characterized in that: The support frame (1) includes an upper baffle (3) and a lower baffle (4); The upper baffle (3) and the lower baffle (4) are connected by a support column, and the lifting structure is set on the support column; the lifting structure includes a longitudinal linear moving guide rail set on the support column, and the movable section of the longitudinal linear moving guide rail is connected to the lifting seat (2), thereby realizing the insertion and removal of the inner steel section (7); the pin (13) is set on the lower baffle (4), thereby realizing the fixation of the support frame (1).

3. The foundation pit support structure with internally inserted steel sections in the jet grouting pile according to claim 1, characterized in that: The swing structure includes a bidirectional rotary motor (8) and a threaded rod (9); The inner insert steel (7) is placed inside the lifting seat (2), and a threaded hole (10) corresponding to the threaded rod (9) is provided at the center of the upper part of the inner insert steel (7); The threaded rod (9) is located in the center of the lifting seat (2) via a bearing (14), and the threaded rod (9) is threadedly connected to the threaded hole (10) of the inner insert steel (7).

4. The foundation pit support structure with internally inserted steel sections in the jet grouting pile according to claim 3, characterized in that: The bidirectional rotary motor (8) is mounted on one side of the lifting seat (2) via the mounting base (15), and the output shaft of the bidirectional rotary motor (8) passes through the lifting seat (2) and is connected to the threaded rod (9). The bidirectional rotary motor (8) rotates to drive the threaded rod (9) to rotate in both directions, thereby realizing the left and right swing of the inner steel section (7).

5. The foundation pit support structure with internally inserted steel sections in the jet grouting pile according to claim 4, characterized in that: Guide rods (11) are provided on both sides of the lifting seat (2), and guide holes (12) corresponding to the guide rods (11) are provided on the inner steel profile (7). The inner steel profile (7) is guided by the guide rods (11) and the guide holes (12).

6. The foundation pit support structure with internally inserted steel sections in the jet grouting pile according to claim 4, characterized in that: It also includes a control panel, which is connected to control the longitudinal linear guide rail (6) and the bidirectional rotary motor (8) to operate, and is powered by an external power source.

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