Long casing precision burying positioning device

Abstract

The utility model discloses a long protection cylinder precision burying positioning device, including concrete pedestal, the lower section steel casing is inlayed in the concrete pedestal, the upper end of lower section steel casing is welded with the upper section steel casing, the side of lower section steel casing and upper section steel casing all are installed with the casing lifting lug, be equipped with the embedded steel sheet on the concrete pedestal, install steel stand in the embedded steel sheet, install the main girder between steel stand, install the gusset between main girder and steel stand, install the secondary beam above main girder, install the guide clamping seat on the I -beam flange of the middle part of main girder and secondary beam. This long protection cylinder precision burying positioning device, utilize guide clamping seat, when can play the quick guidance protection cylinder central entry guide positioning frame in the protection cylinder lower place, effectively improve the construction efficiency of the manual auxiliary protection cylinder lower place entry guide positioning frame body because of the weight and the volume of protection cylinder are bigger, avoid the safety influence that swings when manual auxiliary protection cylinder lower place.

Description

Technical Field

[0001] This utility model relates to the field of long casing installation technology, specifically a long casing precise installation positioning device. Background Technology

[0002] In the current construction of large equipment foundations for industrial plants and deep foundations for super high-rise buildings, large-diameter and ultra-long permanent steel casings have become a key structure to ensure the safety and quality of foundation construction due to their superior load-bearing capacity, anti-collapse performance and durability. As the scale of infrastructure continues to expand, the parameters of permanent steel casings are showing a trend towards larger size and deeper burial depth.

[0003] Existing permanent steel casing installation technology has gradually revealed technical bottlenecks such as insufficient positioning accuracy, difficulty in verticality control, and low installation efficiency when dealing with complex geological conditions and large-diameter, ultra-long steel casing parameters. Therefore, we propose a long casing precision installation positioning device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a precise positioning device for long casing, in order to solve the problems mentioned in the background art, that the existing permanent steel casing burial technology on the market has gradually shown insufficient positioning accuracy, difficulty in verticality control and low burial efficiency when dealing with complex geological conditions and large-diameter and ultra-long steel casing parameters.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long protective casing precision embedding and positioning device, including a concrete base, a lower section steel protective casing embedded in the concrete base, an upper section steel protective casing welded to the upper end of the lower section steel protective casing, and protective casing lifting lugs installed on the sides of both the lower section steel protective casing and the upper section steel protective casing.

[0006] The concrete base is provided with a pre-embedded steel plate, and steel columns are installed on the pre-embedded steel plate. A main beam is installed between the steel columns, and corner braces are installed between the main beam and the steel columns. A secondary beam is installed above the main beam, and guide brackets are installed on the I-beam flanges in the middle of the main beam and the secondary beam.

[0007] Preferably, the guide seat includes a limiting boss and a guide bevel, the upper part of the guide seat is provided with a guide bevel, and one side of the guide seat is provided with a limiting boss.

[0008] Preferably, the steel columns, main beams, corner braces, and secondary beams constitute a guide positioning frame, all of which are made of Q235B ordinary carbon structural steel, and the guide positioning frame is installed and fixed by welding.

[0009] Preferably, both the main beam and the secondary beam are provided in two layers, with the main beam and secondary beam arranged in both directions in each layer, and a square cavity is formed in the middle after the main beam and the secondary beam are assembled.

[0010] Preferably, the corner braces are distributed at an angle, and their ends are respectively connected to the main beam and the steel column.

[0011] Preferably, the guide bracket is made of 10mm thick steel plate, and its bottom is slotted according to the thickness and width of the I-beam flange to form a slot that matches the cross-sectional shape of the main and secondary beam flanges.

[0012] Preferably, the guide bevels are distributed at an angle, and the guide bevels are inclined at 45°.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The long casing is precisely embedded and positioned. The modular design of the guide positioning frame allows it to be installed quickly. Combined with intelligent hoisting equipment, it greatly shortens the embedding time of the steel casing. Under the same construction conditions, the embedding efficiency of a single steel casing is increased by about 40%, which effectively shortens the overall construction period of the project and meets the progress requirements of modern engineering construction.

[0015] (2) The long casing is precisely embedded and positioned. For complex geological environments such as deep backfill soil and soft soil layers, this construction method enhances the stability of the casing in soft strata by optimizing the structure of the guide positioning frame and the construction process. By utilizing the guiding and supporting role of the guide positioning frame, the risk of displacement during the sinking process of the steel casing is reduced, thus broadening the application scope of steel casing construction.

[0016] (3) The long casing is precisely embedded and positioned. Using the guide seat, it can quickly guide the casing to enter the guide positioning frame in the center when the casing is lowered and installed. This effectively improves the construction efficiency of manually lowering the casing into the guide positioning frame due to its large weight and volume, and avoids the safety impact caused by the swaying when the casing is lowered manually. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the guide card holder structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the main structure of the guide positioning frame of this utility model;

[0021] Figure 5This is a top view of the guide positioning frame of this utility model.

[0022] In the diagram: 1. Concrete base; 2. Lower steel casing; 3. Upper steel casing; 4. Embedded steel plate; 5. Steel column; 6. Main beam; 7. Corner brace; 8. Secondary beam; 9. Guide bracket; 10. Limiting boss; 11. Casing lifting lug; 12. Guide bevel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The present invention provides the following technical solution: a long casing precision embedding and positioning device, including a concrete base 1, a lower section steel casing 2 embedded in the concrete base 1, an upper section steel casing 3 welded to the upper end of the lower section steel casing 2, casing lifting lugs 11 installed on the sides of both the lower section steel casing 2 and the upper section steel casing 3; a pre-embedded steel plate 4 is provided on the concrete base 1, a steel column 5 is installed on the pre-embedded steel plate 4, a main beam 6 is installed between the steel columns 5, a corner brace 7 is installed between the main beam 6 and the steel column 5, a secondary beam 8 is installed above the main beam 6, and a guide bracket 9 is installed on the I-beam flange in the middle of the main beam 6 and the secondary beam 8;

[0025] Furthermore, the steel column 5, main beam 6, corner brace 7 and secondary beam 8 constitute the guide positioning frame, all of which are made of Q235B ordinary carbon structural steel. The guide positioning frame is installed and fixed by welding.

[0026] Furthermore, both the main beam 6 and the secondary beam 8 are provided with two layers, with the main beam 6 and the secondary beam 8 arranged in both directions on each layer. After the main beam 6 and the secondary beam 8 are assembled, a square cavity is formed in the middle, which plays a role in initially limiting the position of the steel casing and controlling the horizontal deviation.

[0027] Furthermore, the corner braces 7 are distributed at an angle, and their ends are respectively connected to the main beam 6 and the steel column 5 to reinforce the guide positioning frame;

[0028] Furthermore, the guide seat 9 includes a limiting boss 10 and a guide bevel 12. The upper part of the guide seat 9 is provided with a guide bevel 12, and the side of the guide seat 9 is provided with a limiting boss 10.

[0029] Furthermore, the guide bracket 9 is made of 10mm thick steel plate, and its bottom is slotted according to the thickness and width of the I-beam flange to form a slot that matches the cross-sectional shape of the main and secondary beam flanges, which facilitates stable installation.

[0030] Furthermore, the guide bevel 12 is distributed at an angle, and the guide bevel 12 is inclined at 45°, which plays a role in guiding the casing to be centered during the lowering process;

[0031] Specifically, the guide positioning frame consists of steel columns 5, main beams 6, secondary beams 8, and corner braces 7, all made of Q235B ordinary carbon structural steel. After the guide positioning frame is manufactured, it needs to be installed on-site after the casing pile is drilled. Before installation, the center line is measured and laid out with the center point of the casing pile as the center line. The center axis of the steel column 5 is marked on the pre-embedded steel plate 4 with ink lines. The guide positioning frame is hoisted into place using a truck crane, and an 8-pound iron hammer is used for manual assistance to accurately position it. After positioning, the surveyor uses a total station and a level to check the horizontal and verticality. If the requirements are not met, it should be corrected in time.

[0032] The guide positioning frame adopts a modular steel structure with two layers, upper and lower, with a spacing of ≥2.0m between the layers (verified by finite element analysis, this spacing ensures that the maximum deflection of the casing over a length of 22.9m is ≤114mm, i.e., 0.5% × 22.9m). Each layer has 6 main beams and 8 secondary beams arranged bidirectionally, with an inner edge spacing of 1920mm, forming a square cavity in the center. The inner side length of the cavity is 1920mm - the casing diameter is 1820mm = 100mm (i.e., unidirectional positioning of the casing along the X and Y axes). The displacement is 50mm. Its rigid frame provides initial positioning and horizontal deviation control for the steel casing. Guide brackets 9 are installed on the I-beam flanges in the middle of the upper and lower main beams 6 and secondary beams 8 of the guide positioning frame. The guide brackets 9 are made of 10mm thick steel plate, with slots cut at the bottom according to the thickness and width of the I-beam flanges to form a jaw that matches the cross-sectional shape of the flanges of the main beams 6 and secondary beams 8, facilitating stable installation. A 45° guide bevel 12 is cut into the upper part of the guide bracket 9. During the lowering of the casing, the guide bracket 9 plays a guiding role in centering it. A 45mm wide limiting boss 10 is provided on the guide bracket 9 in the direction of the frame center (casing direction). After installation, the limiting boss 10 extends into the 50mm gap between the original frame and the casing, reducing the actual unidirectional movement gap of the casing along the X and Y axes to 50mm-45mm=5mm. The guide bracket 9, through the limiting boss 10 and the upper guide bevel 12, jointly achieves the guiding function during the lowering of the steel casing and strictly controls its center horizontal deviation. The upper and lower guide positioning frames, combined with the guide bracket 9, form a guiding + three-dimensional positioning system. With the help of a high-precision total station, the lowering process of the steel casing is monitored in real time. Any deviation is immediately corrected dynamically, thus forming a three-in-one system of "guidance + three-dimensional positioning + dynamic correction"—a key technology for casing installation—ensuring efficient and accurate installation of the steel casing. Content not described in detail in this manual belongs to existing technology known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precise embedding and positioning device for long casings, comprising a concrete base (1), characterized in that: The concrete base (1) is embedded with a lower section steel casing (2), and an upper section steel casing (3) is welded to the upper end of the lower section steel casing (2). Casing lifting lugs (11) are installed on the sides of both the lower section steel casing (2) and the upper section steel casing (3). The concrete base (1) is provided with a pre-embedded steel plate (4), a steel column (5) is installed on the pre-embedded steel plate (4), a main beam (6) is installed between the steel columns (5), a corner brace (7) is installed between the main beam (6) and the steel column (5), a secondary beam (8) is installed above the main beam (6), and a guide seat (9) is installed on the I-beam flange in the middle of the main beam (6) and the secondary beam (8).

2. The long casing precision embedding and positioning device according to claim 1, characterized in that: The guide seat (9) includes a limiting boss (10) and a guide bevel (12). The upper part of the guide seat (9) is provided with a guide bevel (12), and the side of the guide seat (9) is provided with a limiting boss (10).

3. The long casing precision embedding and positioning device according to claim 1, characterized in that: The steel column (5), main beam (6), corner brace (7) and secondary beam (8) constitute the guide positioning frame, all of which are made of Q235B ordinary carbon structural steel. The guide positioning frame is installed and fixed by welding.

4. The long casing precision embedding and positioning device according to claim 1, characterized in that: The main beam (6) and the secondary beam (8) are both provided with two layers. The main beam (6) and the secondary beam (8) are arranged in both directions in each layer. The main beam (6) and the secondary beam (8) form a square cavity in the middle after assembly.

5. The long casing precision embedding and positioning device according to claim 1, characterized in that: The corner braces (7) are distributed in an inclined manner, and their ends are connected to the main beam (6) and the steel column (5) respectively.

6. The long casing precision embedding and positioning device according to claim 1, characterized in that: The guide bracket (9) is made of 10mm thick steel plate, and its bottom is slotted according to the thickness and width of the I-beam flange to form a slot that matches the cross-sectional shape of the main and secondary beam flanges.

7. The long casing precision embedding and positioning device according to claim 2, characterized in that: The guide bevel (12) is distributed in an inclined manner, and the guide bevel (12) is inclined at 45°.

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